The Year's Weather – 2024
Monday, 13th January 2025
Fig. 1 Monthly mean temperature anomalies (against the 1991-2020 normal) in Hong Kong in 2024
Fig. 2 Long-term time series of number of Hot Nights in Hong Kong (1884-2024)
Fig. 3 Long-term time series of number of Very Hot Days in Hong Kong (1884-2024)
Fig. 4 Long-term time series of number of Extremely Hot Days in Hong Kong (1884-2024)
Fig. 5 Long-term time series of number of Cold Days in Hong Kong (1884-2024)
Fig. 6 Long-term time series of annual mean temperature in Hong Kong (1885-2024)
Fig. 7 Monthly rainfall anomalies (against the 1991-2020 normal) in Hong Kong in 2024
Fig. 8 Annual rainfall distribution in Hong Kong in 2024 (in millimetres)
Detailed description of the weather for individual months is available on the Monthly Weather Summary webpage:
https://www.weather.gov.hk/en/wxinfo/pastwx/mws/mws.htm
Some significant weather events in Hong Kong in 2024 are highlighted below:
Record-breaking high temperature events
There were a number of record-breaking high temperature events in 2024:
Exceptionally severe rainstorm over the eastern part of the territory on 4 May
The World Meteorological Organization confirmed that 2024 was the warmest year on record[1]. The global mean sea level continued to rise in 2024. Over the Antarctica and Arctic, sea-ice extent remained well below average during the year and the minimum sea-ice extents were respectively the second and seventh lowest in satellite records. In 2024, various extreme weather events affected many parts of the world, including heatwaves in East Asia, Southeast Europe, the Middle East, Southeast Asia, Central America and many parts of Africa; severe drought in many parts of the Americas and Africa; extreme rainfall that triggered severe flooding in Central Europe, the Sahel of Africa, southern Brazil, Afghanistan and East Africa; blizzards in South Korea; severe damages and heavy casualties inflicted by Super Typhoon Yagi and its remnant in the Philippines, China, Vietnam, Lao PDR, Thailand and Myanmar. A number of major hurricanes also brought severe impacts to the United States and the Caribbean. Rampant wildfires also wreaked havoc in Chile, Canada and the western United States.
The El Niño event of 2023 lasted till April 2024. According to the World Meteorological Organization, this event is one of the five strongest on record. Sea surface temperatures of the central and eastern equatorial Pacific returned to normal in May 2024 and remained normal until the end of the year.
In Hong Kong, with 11 months warmer than usual including the record-breaking monthly mean temperatures in April and October, 2024 was the warmest year on record with the annual mean temperature reaching 24.8 degrees, 1.3 degrees above the 1991-2020 normal[2]. The annual mean minimum temperature of 22.8 degrees and annual mean maximum temperature of 27.3 degrees were respectively the highest and second highest since records began in 1884. In particular, the mean temperature for autumn (September to November) reached 26.5 degrees, the highest on record. The highest temperature recorded at the Hong Kong Observatory in the year was 35.7 degrees on 17 September, one of the eighth highest on record. There were 52 Very Hot Days[3], 50 Hot Nights[4] and two Extremely Hot Days[5] in Hong Kong in 2024, respectively ranking one of the third highest, one of the fourth highest and one of the eighth highest on record.
The lowest temperature recorded at the Observatory in the year was 6.3 degrees on 23 January. The number of Cold Days[6] in the year was 11 days, 4.2 days less than the 1991-2020 normal.
The El Niño event of 2023 lasted till April 2024. According to the World Meteorological Organization, this event is one of the five strongest on record. Sea surface temperatures of the central and eastern equatorial Pacific returned to normal in May 2024 and remained normal until the end of the year.
In Hong Kong, with 11 months warmer than usual including the record-breaking monthly mean temperatures in April and October, 2024 was the warmest year on record with the annual mean temperature reaching 24.8 degrees, 1.3 degrees above the 1991-2020 normal[2]. The annual mean minimum temperature of 22.8 degrees and annual mean maximum temperature of 27.3 degrees were respectively the highest and second highest since records began in 1884. In particular, the mean temperature for autumn (September to November) reached 26.5 degrees, the highest on record. The highest temperature recorded at the Hong Kong Observatory in the year was 35.7 degrees on 17 September, one of the eighth highest on record. There were 52 Very Hot Days[3], 50 Hot Nights[4] and two Extremely Hot Days[5] in Hong Kong in 2024, respectively ranking one of the third highest, one of the fourth highest and one of the eighth highest on record.
The lowest temperature recorded at the Observatory in the year was 6.3 degrees on 23 January. The number of Cold Days[6] in the year was 11 days, 4.2 days less than the 1991-2020 normal.
Fig. 1 Monthly mean temperature anomalies (against the 1991-2020 normal) in Hong Kong in 2024
Fig. 2 Long-term time series of number of Hot Nights in Hong Kong (1884-2024)
Fig. 3 Long-term time series of number of Very Hot Days in Hong Kong (1884-2024)
Fig. 4 Long-term time series of number of Extremely Hot Days in Hong Kong (1884-2024)
Fig. 5 Long-term time series of number of Cold Days in Hong Kong (1884-2024)
Fig. 6 Long-term time series of annual mean temperature in Hong Kong (1885-2024)
The annual total rainfall in 2024 was 2,309.7 millimetres, about 5 percent below the 1991-2020 normal of 2,431.2 millimetres. Four red rainstorm warnings were issued by the Observatory in the year. The number of days with thunderstorms reported in Hong Kong was 54 days in 2024, about 12 days more than the 1991-2020 normal.
Fig. 7 Monthly rainfall anomalies (against the 1991-2020 normal) in Hong Kong in 2024
Fig. 8 Annual rainfall distribution in Hong Kong in 2024 (in millimetres)
A total of 29 tropical cyclones occurred over the western North Pacific and the South China Sea in 2024, near the long-term (1961-2020) average of about 30. There were 13 tropical cyclones reaching typhoon intensity[7] or above during the year, slightly less than the long-term average of about 15, and eight of them reached super typhoon intensity (with maximum 10-minute wind speed of 185 km/h or above near the centre). In Hong Kong, seven tropical cyclones necessitated the issuance of tropical cyclone warning signals, slightly more than the long-term average of about six in a year. The No. 8 Gale or Storm Signals were issued during the passage of Yagi in September and Toraji in November.
Detailed description of the weather for individual months is available on the Monthly Weather Summary webpage:
https://www.weather.gov.hk/en/wxinfo/pastwx/mws/mws.htm
Some significant weather events in Hong Kong in 2024 are highlighted below:
Record-breaking high temperature events
There were a number of record-breaking high temperature events in 2024:
-
The maximum temperature recorded at the Observatory reached 31.5 degrees on 24 March, the highest absolute maximum temperature on record for March.
- Mainly attributing to the warmer than normal sea surface temperature and stronger than usual southerly flow in the lower atmosphere over the northern part of the South China Sea, Hong Kong experienced the warmest April on record. The monthly mean maximum temperature of 28.9 degrees, monthly mean temperature of 26.4 degrees and monthly mean minimum temperature of 24.5 degrees were 3.3 degrees, 3.4 degrees and 3.4 degrees above their corresponding normals and all of them were the highest on record for April.
- It was the warmest first half year on record in Hong Kong. The mean minimum temperature of 21.4 degrees, mean temperature of 23.3 degrees and mean maximum temperature of 25.8 degrees were respectively the highest, one of the highest and the second highest on record for the same period.
- There were 18 hot nights in August 2024, the highest on record for August.
- Mainly attributed to the weaker northeast monsoon over southern China, Hong Kong experienced the warmest October on record. The monthly mean maximum temperature of 30.3 degrees, monthly mean temperature of 27.3 degrees and monthly mean minimum temperature of 25.4 degrees were 2.2 degrees, 1.6 degrees and 1.5 degrees above their corresponding normals and all of them were the highest on record for October. Moreover, there were three very hot days in the month, one of the highest on record for October.
- Hong Kong experienced the warmest autumn on record from September to November 2024. The mean temperature of 26.5 degrees and mean minimum temperature of 24.5 degrees were both the highest on record for the same period. Moreover, the mean maximum temperature of 29.2 degrees was one of the highest on record for the same period.
The upper-air disturbances associated with the southern branch of a westerly trough affected southern China on 4 May 2024. Coupled with significant low-level convergence and upper-level divergence, persistent thundery showers affected the vicinity of the Pearl River Estuary on that day, and there were also heavy showers and severe squally thunderstorms in Hong Kong. More than 100 millimetres of rainfall were recorded over many places and rainfall even exceeded 400 millimetres over parts of Tseung Kwan O. There was exceptionally severe rainstorm over some areas in the eastern part of the territory in the morning with an hourly rainfall of 145.5 millimetres recorded at Tseung Kwan O. The heavy rain also necessitated the issuance of the first Red Rainstorm Warning of the year. Besides, violent gusts of about 110 kilometres per hour were once recorded at Cheung Chau Beach on that afternoon. According to preliminary reports, there were 16 reports of flooding including 12 cases in Sai Kung and Tseung Kwan O and 15 reports of landslides in Sai Kung area.
Fig. 9 Rainfall distribution map on 4 May 2024
Fig. 10 Flooding in Tseung Kwan O during the rainstorm on 4 May 2024 (Courtesy of Hang Hau Rural Committee)
Fig. 11 Landslide on Clear Water Bay Road during the rainstorm on 4 May 2024 (Courtesy of Hang Hau Rural Committee)
The passage of Super Typhoon Yagi on 5 – 6 September
After a quiet period of tropical cyclone activities over the South China Sea in August 2024, tropical cyclone Yagi entered the northern part of the South China Sea on 3 September. While moving across the northern part of the South China Sea, Yagi rapidly intensified from a severe tropical storm to a super typhoon in just 24 hours. Yagi attained its peak intensity with an estimated maximum sustained wind of 230 kilometres per hour near its centre on 6 September, making it the second strongest tropical cyclone in the South China Sea since the Observatory’s records began in 1950, second only to Super Typhoon Rammasun in 2014 and on par with Super Typhoon Saola in 2023.
With the approach of Yagi, the weather of Hong Kong deteriorated later on 5 September and the Observatory issued the first No. 8 Gale or Storm Signal in the year. Strong to gale force winds generally affected the territory with occasional storm force winds on high ground later on 5 September and at first on 6 September. The outer rainbands of Yagi brought heavy showers, violent gusts and thunderstorms to Hong Kong on the night of 5 September and the next two days. Violent gusts of around 139 kilometres per hour were once recorded at Central Pier on the night of 5 September, second only to the records made during the passage of Super Typhoon Mangkhut in 2018 and that of Super Typhoon Saola in 2023. More than 100 millimetres of rainfall were recorded over most parts of Hong Kong on 5 – 7 September and rainfall even exceeded 200 millimetres over the northeastern part of the New Territories.
Waterspout occurring over Victoria Harbour for the first time
With the approach of Yagi, the weather of Hong Kong deteriorated later on 5 September and the Observatory issued the first No. 8 Gale or Storm Signal in the year. Strong to gale force winds generally affected the territory with occasional storm force winds on high ground later on 5 September and at first on 6 September. The outer rainbands of Yagi brought heavy showers, violent gusts and thunderstorms to Hong Kong on the night of 5 September and the next two days. Violent gusts of around 139 kilometres per hour were once recorded at Central Pier on the night of 5 September, second only to the records made during the passage of Super Typhoon Mangkhut in 2018 and that of Super Typhoon Saola in 2023. More than 100 millimetres of rainfall were recorded over most parts of Hong Kong on 5 – 7 September and rainfall even exceeded 200 millimetres over the northeastern part of the New Territories.
Waterspout occurring over Victoria Harbour for the first time
Affected by an upper-air disturbance, the weather of Hong Kong was unsettled on 28 September 2024. With sunshine in the morning, temperature rise increased atmospheric instability and favoured the development of severe convective weather. While westerly winds prevailed over Victoria Harbour at first, an easterly airstream set in from east to west gradually during the day, resulting in localized horizontal wind shear. Finally, a waterspout briefly appeared over the sea area off Hung Hom before 12:30 p.m., the first occurrence over Victoria Harbour according to reports received by the Observatory since 1959.
November with three tropical cyclone episodes
Fig. 12(a) and (b) Waterspout inside the Victoria Harbour on 28 September 2024
(Courtesy of Kathie Wong (a) and the Government Flying Service (b))
November with three tropical cyclone episodes
November 2024 was characterized by the successive strikes of tropical cyclones Yinxing, Toraji and Man-yi at the end of the typhoon season of Hong Kong, necessitating the issuance of tropical cyclone warning signals for these three episodes, the first time in November since 1946.
Super Typhoon Yinxing first affected Hong Kong on 8 – 10 November and brought strong winds to many places of the territory. After the cancellation of all tropical cyclone warning signals of Yinxing, the Observatory issued No. 1 Standby Signal just 31 hours later with the approach of Typhoon Toraji. As Toraji was expected to come rather close to Hong Kong with its associated gale force winds posing a threat to the territory, the Observatory issued the No. 8 Gale or Storm Signal on the night of 13 November, the latest issuance of No. 8 Gale or Storm Signal in a year since 1946. Strong to gale force northeasterly winds affected most parts of the territory at first on 14 November. The outer rainbands of Toraji also brought squally showers to Hong Kong on that day.
Super Typhoon Man-yi, the third tropical cyclone that affected Hong Kong in November 2024, tracked across the northern part of the South China Sea on 18 – 19 November. Under the combined effects of a spring tide, northeast monsoon and Man-yi, water levels in Hong Kong were particularly high on the night of 18 November. The water levels of Quarry Bay, Tai O and Tai Po Kau reached 3.36, 3.36 and 3.52 metres above the Chart Datum respectively and they were all the highest on record for November. Minor flooding occurred in some low-lying areas including the banks of Shing Mun River, Lei Yue Mun, Tai O and Sha Tau Kok.
Notes :
[1] The World Meteorological Organization confirmed that 2024 was the warmest year on record, with the annual average global temperature 1.55 degrees above pre-industrial levels, marking it the first year to exceed the 1.5 degrees level. Although an individual year surpassing the 1.5 degrees level does not mean that the long-term temperature goals of the Paris Agreement are not achievable, it indicates the urgent need for a significant reduction in global carbon emissions to avoid the further worsening of climate change impacts.
[2] Climatological normals for the reference period of 1961-1990, 1971-2000, 1981-2010 and 1991-2020 are available at: https://www.weather.gov.hk/en/cis/normal.htm. Climatological normals of 1991-2020 are referenced in the text unless otherwise stated.
[3] 'Very Hot Day' refers to the condition with the daily maximum temperature equal to or higher than 33.0 degrees.
[4] 'Hot Night' refers to the condition with the daily minimum temperature equal to or higher than 28.0 degrees.
[5] 'Extremely Hot Day' refers to the condition with the daily maximum temperature equal to or higher than 35.0 degrees.
[6] 'Cold Day' refers to the condition with the daily minimum temperature equal to or lower than 12.0 degrees.
[7] Information on the classification of Tropical Cyclones is available at: https://www.weather.gov.hk/en/informtc/class.htm
Super Typhoon Yinxing first affected Hong Kong on 8 – 10 November and brought strong winds to many places of the territory. After the cancellation of all tropical cyclone warning signals of Yinxing, the Observatory issued No. 1 Standby Signal just 31 hours later with the approach of Typhoon Toraji. As Toraji was expected to come rather close to Hong Kong with its associated gale force winds posing a threat to the territory, the Observatory issued the No. 8 Gale or Storm Signal on the night of 13 November, the latest issuance of No. 8 Gale or Storm Signal in a year since 1946. Strong to gale force northeasterly winds affected most parts of the territory at first on 14 November. The outer rainbands of Toraji also brought squally showers to Hong Kong on that day.
Super Typhoon Man-yi, the third tropical cyclone that affected Hong Kong in November 2024, tracked across the northern part of the South China Sea on 18 – 19 November. Under the combined effects of a spring tide, northeast monsoon and Man-yi, water levels in Hong Kong were particularly high on the night of 18 November. The water levels of Quarry Bay, Tai O and Tai Po Kau reached 3.36, 3.36 and 3.52 metres above the Chart Datum respectively and they were all the highest on record for November. Minor flooding occurred in some low-lying areas including the banks of Shing Mun River, Lei Yue Mun, Tai O and Sha Tau Kok.
Fig. 13 Satellite image at 8 a.m. (Hong Kong Time) on 12 November 2024, showing that four tropical cyclones occurred concurrently over the western North Pacific and the South China Sea, the first time in November since 1961
Fig. 14 Minor flooding over the cycle tracks near Shing Mun River on the night of 18 November 2024 (Courtesy of 岳人 Geo Trekker)
Fig. 15 Minor flooding in Tai O on the night of 18 November 2024 (Courtesy of Islands District Office)
Notes :
[1] The World Meteorological Organization confirmed that 2024 was the warmest year on record, with the annual average global temperature 1.55 degrees above pre-industrial levels, marking it the first year to exceed the 1.5 degrees level. Although an individual year surpassing the 1.5 degrees level does not mean that the long-term temperature goals of the Paris Agreement are not achievable, it indicates the urgent need for a significant reduction in global carbon emissions to avoid the further worsening of climate change impacts.
[2] Climatological normals for the reference period of 1961-1990, 1971-2000, 1981-2010 and 1991-2020 are available at: https://www.weather.gov.hk/en/cis/normal.htm. Climatological normals of 1991-2020 are referenced in the text unless otherwise stated.
[3] 'Very Hot Day' refers to the condition with the daily maximum temperature equal to or higher than 33.0 degrees.
[4] 'Hot Night' refers to the condition with the daily minimum temperature equal to or higher than 28.0 degrees.
[5] 'Extremely Hot Day' refers to the condition with the daily maximum temperature equal to or higher than 35.0 degrees.
[6] 'Cold Day' refers to the condition with the daily minimum temperature equal to or lower than 12.0 degrees.
[7] Information on the classification of Tropical Cyclones is available at: https://www.weather.gov.hk/en/informtc/class.htm
Table 1 Summary of record-breaking high temperature events in 2024
| Record-breaking Events (since records began in 1884) |
Date / Period | New Record |
| 1. Highest Seasonal Absolute Maximum Temperature for Winter (on par with 1953/54 winter) | December 2023 to February 2024 | 28.7℃ |
| 2. Highest Maximum Temperature for March | 24 March 2024 | 31.5℃ |
| 3. Highest Daily Mean Temperature for March | 31 March 2024 | 27.1℃ |
| 4. Highest Daily Minimum Temperature for March | 31 March 2024 | 26.0℃ |
| 5. Highest Daily Mean Temperature for Ching Ming Festival | 4 April 2024 | 27.2℃ |
| 6. Highest Daily Minimum Temperature for Ching Ming Festival | 4 April 2024 | 26.5℃ |
| 7. Highest Daily Mean Temperature for April | 27 April 2024 | 28.8℃ |
| 8. Highest Daily Minimum Temperature for April | 27 April 2024 | 27.7℃ |
| 9. Highest Monthly Absolute Minimum Temperature for April | April 2024 | 21.5℃ |
| 10. Highest Monthly Mean Maximum Temperature for April | April 2024 | 28.9℃ |
| 11. Highest Monthly Mean Temperature for April | April 2024 | 26.4℃ |
| 12. Highest Monthly Mean Minimum Temperature for April | April 2024 | 24.5℃ |
| 13. Highest Daily Maximum Temperature for Summer Solstice (on par with 21 June 1980) | 21 June 2024 | 34.0℃ |
| 14. Highest Daily Mean Temperature for Summer Solstice (on par with 21 June 2019) | 21 June 2024 | 30.8℃ |
| 15. Highest Daily Minimum Temperature for June (on par with 21 June 2019, 29 June 2019 and 19 June 2021) | 22 June 2024 | 29.5℃ |
| 16. Highest Number of Consecutive Very Hot Days for June (on par with 19 – 27 June 2016) | 20 – 28 June 2024 | 9 Days |
| 17. Highest Mean Temperature for the First Half of the Year (on par with the first half of 2021) | January to June 2024 | 23.3℃ |
| 18. Highest Mean Minimum Temperature for the First Half of the Year | January to June 2024 | 21.4℃ |
| 19. Highest Daily Mean Temperature for Moderate Heat | 6 July 2024 | 30.8℃ |
| 20. Highest Daily Minimum Temperature for Moderate Heat | 6 July 2024 | 29.2℃ |
| 21. Highest Daily Maximum Temperature for Moderate Heat (on par with 7 July 2016) | 6 July 2024 | 34.0℃ |
| 22. Highest Number of Hot Nights for August | August 2024 | 18 Days |
| 23. Highest Daily Maximum Temperature for Mid-Autumn Festival | 17 September 2024 | 35.7℃ |
| 24. Highest Daily Maximum Temperature for National Day (on par with 1 October 1890) | 1 October 2024 | 34.2℃ |
| 25. Highest Daily Mean Temperature for October | 1 October 2024 | 30.9℃ |
| 26. Latest Very Hot Day in a Year | 19 October 2024 | 19 October |
| 27. Highest Number of Very Hot Days for October (on par with October 2023) | October 2024 | 3 Days |
| 28. Highest Monthly Mean Maximum Temperature for October | October 2024 | 30.3℃ |
| 29. Highest Monthly Mean Temperature for October | October 2024 | 27.3℃ |
| 30. Highest Monthly Mean Minimum Temperature for October | October 2024 | 25.4℃ |
| 31. Highest Seasonal Mean Maximum Temperature for Autumn (on par with September to November 2022) | September to November 2024 | 29.2℃ |
| 32. Highest Seasonal Mean Temperature for Autumn | September to November 2024 | 26.5℃ |
| 33. Highest Seasonal Mean Minimum Temperature for Autumn | September to November 2024 | 24.5℃ |
| 34. Highest Annual Mean Temperature | 2024 | 24.8℃ |
| 35. Highest Annual Mean Minimum Temperature | 2024 | 22.8℃ |
 Month |
Mean Pressure (hPa) |
Air Temperature | Mean Dew Point (deg. C) |
Mean Relative Humidity (%) |
Mean Amount of Cloud (%) |
Total Rainfall (mm) |
||
|---|---|---|---|---|---|---|---|---|
Mean Daily Maximum (deg. C) |
Mean (deg. C) |
Mean Daily Minimum (deg. C) |
||||||
| January | 1021.4 | 20.5 | 17.9 | 15.9 | 12.5 | 72 | 62 | 6.7 |
| February | 1019.4 | 21.9 | 19.4 | 17.6 | 15.7 | 80 | 75 | 4.1 |
| March | 1016.5 | 23.9 | 21.1 | 19.1 | 16.9 | 78 | 77 | 21.6 |
| April | 1010.2 | 28.9 | 26.4 | 24.5 | 23.1 | 82 | 81 | 257.1 |
| May | 1010.2 | 28.3 | 26.0 | 24.5 | 22.5 | 82 | 83 | 292.6 |
| June | 1007.5 | 31.0 | 28.8 | 26.8 | 25.5 | 83 | 86 | 281.3 |
| July | 1006.0 | 32.4 | 29.9 | 28.0 | 26.2 | 81 | 78 | 458.5 |
| August | 1006.5 | 32.3 | 29.6 | 27.7 | 25.9 | 81 | 74 | 261.5 |
| September | 1006.1 | 32.0 | 29.2 | 26.8 | 25.2 | 80 | 74 | 520.9 |
| October | 1012.2 | 30.3 | 27.3 | 25.4 | 20.0 | 65 | 69 | 11.3 |
| November | 1016.4 | 25.3 | 23.0 | 21.3 | 16.8 | 70 | 71 | 194.1 |
| December | 1020.0 | 20.8 | 18.5 | 16.5 | 10.3 | 60 | 54 | Trace |
| Mean/Total | 1012.7 | 27.3 | 24.8 | 22.8 | 20.1 | 76 | 74 | 2309.7 |
| Normal(1991-2020) | 1012.9 | 26.0 | 23.5 | 21.6 | 19.3 | 78 | 68 | 2431.2 |
| Station | Hong Kong Observatory | |||||||
Trace means rainfall less than 0.05 mm
Table 2b Summary of meteorological observations in Hong Kong, 2024
Month |
Number of hours of Reduced Visibility# (hours) |
Total Bright Sunshine (hours) |
Mean Daily Global Solar Radiation (MJ/m2) |
Total Evaporation (mm) |
Prevailing Wind Direction (degrees) |
Mean Wind Speed (km/h) |
|
|---|---|---|---|---|---|---|---|
| January | 71 | 52 | 169.8 | 12.42 | 74.4 | 060 | 23.3 |
| February | 53 | 5 | 107.4 | 11.19 | 63.8 | 060 | 18.1 |
| March | 66 | 25 | 122.8 | 12.39 | 73.1 | 070 | 21.1 |
| April | 40 | 3 | 87.5 | 10.27 | 66.4 | 160 | 18.1 |
| May | 13 | 10 | 97.6 | 12.48 | 84.4 | 070 | 22.6 |
| June | 12 | 0 | 116.3 | 14.14 | 80.3 | 210 | 21.4 |
| July | 0 | 0 | 178.3 | 17.00 | 113.6 | 090 | 18.5 |
| August | 2 | 0 | 197.3 | 17.51 | 123.6 | 240 | 15.7 |
| September | 15 | 0 | 190.5 | 15.80 | 100.3 | 080 | 17.2 |
| October | 0 | 3 | 209.1 | 15.91 | 139.3 | 080 | 26.6 |
| November | 1 | 0 | 138.0 | 11.36 | 80.7 | 360 | 26.8 |
| December | 13 | 8 | 199.5 | 13.39 | 96.6 | 360 | 23.7 |
| Mean/Total | 286 | 106 | 1814.1 | 13.66 | 1096.5 | 070 | 21.1 |
| Normal(1991-2020) | 825.8 | 1006.4§ | 1829.3 | 13.23 | 1204.1 | 070 | 22.9 |
| Station | Hong Kong Observatory |
Hong Kong International Airport |
King's Park | Waglan Island | |||
# Visibility below 8 km when there is no fog, mist, or precipitation
§ 1997-2023 Mean value
Table 2c Summary of meteorological observations in Hong Kong, 2024
Month |
Number of Extremely Hot Days |
Number of Very Hot Days |
Number of Hot Nights |
Number of Cold Days |
Number of Days with Thunderstorms |
|---|---|---|---|---|---|
| January | - | - | - | 5 | |
| February | - | - | - | 3 | - |
| March | - | - | - | 2 | - |
| April | - | - | - | - | 10 |
| May | - | - | - | - | 7 |
| June | - | 9 | 10 | - | 9 |
| July | - | 14 | 16 | - | 11 |
| August | 1 | 15 | 18 | - | 9 |
| September | 1 | 11 | 6 | - | 8 |
| October | - | 3 | - | - | - |
| November | - | - | - | - | - |
| December | - | - | - | 1 | - |
| Total | 2 | 52 | 50 | 11 | 54 |
| Normal(1991-2020) | 0.8 | 17.5 | 23.6 | 15.2 | 42.3 |
| Station | Hong Kong Observatory | ||||