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9-day Weather Forecast

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General Situation:

Tropical Cyclone Hato is expected to enter the northern part of the South China Sea in the general direction of the coast of eastern Guangdong tomorrow, bringing unsettled weather to Guangdong on Wednesday. A broad trough of low pressure will bring showers to the northern part of the South China Sea and the south China coast in the latter part of this week.

22 Aug
(TUE)
23 Aug
(WED)
24 Aug
(THU)
25 Aug
(FRI)
26 Aug
(SAT)
27 Aug
(SUN)
28 Aug
(MON)
29 Aug
(TUE)
30 Aug
(WED)
Hot
Mainly fine and very hot apart from some haze at first. Becoming cloudy with a few showers and thunder-storms.
Heavy Rain
Cloudy with squally showers and thunder-storms. Showers will be heavy at times.
Rain
Mainly cloudy with showers.
Light Rain
Mainly cloudy with a few showers.
Rain
Mainly cloudy with showers and a few thunder-storms.
Rain
Mainly cloudy with showers and a few thunder-storms.
Rain
Mainly cloudy with showers and a few thunder-storms.
Light Rain
Mainly cloudy with a few showers.
Light Rain
Mainly cloudy with a few showers.

Forecast: maximum temperature minimum temperature

50% of the days have maximum temperatures falling within this range (based on 30-year climate data)[note 1]
50% of the days have minimum temperatures falling within this range (based on 30-year climate data)[note 1]

Forecast: maximum relative humidity minimum relative humidity

50% of the days have maximum relative humidity falling within this range (based on 30-year climate data)[note 1]
50% of the days have minimum relative humidity falling within this range (based on 30-year climate data)[note 1]
West to northwest force 3.
Northwest force 4 to 5, becoming southwest force 5 to 6.
South to southwest force 4 to 5.
Southeast force 2 to 3.
North to northeast force 4 to 5, occasionally force 6 offshore later.
East to southeast force 4 to 5.
East to southeast force 4, occasionally force 5.
East to southeast force 4.
East to southeast force 4.
22 Aug
(TUE)
23 Aug
(WED)
24 Aug
(THU)
25 Aug
(FRI)
26 Aug
(SAT)
27 Aug
(SUN)
28 Aug
(MON)
29 Aug
(TUE)
30 Aug
(WED)

Updated at: 11:30 HKT 21 Aug 2017


(Next update at: 16:30 HKT 21 Aug 2017)

Automatic Regional Weather Forecast in Hong Kong & Pearl River Delta Region
Climatological information for 22 Aug - 30 Aug

Sea surface temperature
7 a.m. on 21 Aug 2017 at North Point :
26 °C
Soil temperatures
7 a.m. on 21 Aug 2017 at the Hong Kong Observatory:
0.5m depth:30.7°C
1.0m depth:30.2°C

Note:
  1. This middle 50% range (between 25th and 75th percentiles) is calculated based on the maximum/minimum temperature and relative humidity data within a 5-day period centred on that day in the 30 years from 1981 to 2010.
  2. "9-day Weather Forecast" provides general indications of the trends in weather for the coming 9 days. For detailed description of today's weather forecast, please refer to "Local Weather Forecast".
  3. The accuracy of forecast generally decreases with forecast period. The average accuracy of weather forecast for the next one to three days, four to seven days, and eight to nine days are about 90%, 85% and 80% respectively.
  4. The accuracy of forecast also varies for different weather systems in different seasons. Generally speaking, weather in spring and summer such as fog, tropical cyclone and severe convective weather is more changeable, resulting in higher uncertainty of forecast.