EXTRACT OF METEOROLOGICAL OBSERVATIONS FOR HONG KONG, SEPTEMBER 2004
EXTRACT OF METEOROLOGICAL OBSERVATIONS FOR HONG KONG,
SEPTEMBER 2004
| Date SEPTEMBER |
Mean Pressure (hPa) |
Air Temperature | Mean Dew Point Temperature (deg. C) |
Mean Relative Humidity (%) |
Mean Amount of Cloud (%) |
Total Rainfall (mm) | ||
|---|---|---|---|---|---|---|---|---|
| Maximum (deg. C) |
Mean (deg. C) |
Minimum (deg. C) | ||||||
| 1 | 1006.8 | 30.2 | 28.5 | 27.2 | 26.0 | 87 | 53 | - |
| 2 | 1008.5 | 31.0 | 29.0 | 27.7 | 25.9 | 83 | 66 | Trace |
| 3 | 1008.8 | 30.0 | 27.8 | 26.2 | 26.1 | 91 | 74 | 18.2 |
| 4 | 1006.7 | 30.9 | 28.6 | 27.1 | 25.0 | 81 | 65 | Trace |
| 5 | 1004.2 | 32.4 | 29.1 | 26.8 | 24.7 | 78 | 52 | - |
| 6 | 1003.1 | 32.6 | 29.3 | 26.4 | 25.3 | 79 | 79 | Trace |
| 7 | 1003.4 | 31.9 | 29.3 | 27.4 | 25.2 | 79 | 64 | - |
| 8 | 1004.7 | 28.7 | 26.7 | 26.0 | 25.6 | 94 | 89 | 34.3 |
| 9 | 1006.0 | 26.0 | 25.0 | 24.1 | 23.2 | 90 | 97 | 29.1 |
| 10 | 1007.8 | 27.2 | 25.2 | 23.9 | 21.5 | 80 | 89 | Trace |
| 11 | 1008.1 | 27.5 | 25.8 | 24.3 | 20.5 | 73 | 87 | - |
| 12 | 1009.8 | 28.5 | 26.5 | 24.4 | 20.4 | 70 | 88 | - |
| 13 | 1010.4 | 30.4 | 27.9 | 25.5 | 20.0 | 63 | 51 | - |
| 14 | 1008.6 | 30.0 | 28.0 | 26.0 | 19.5 | 60 | 42 | - |
| 15 | 1008.2 | 30.4 | 28.2 | 26.1 | 20.3 | 63 | 74 | Trace |
| 16 | 1012.2 | 30.1 | 28.5 | 27.0 | 23.5 | 75 | 50 | - |
| 17 | 1013.9 | 30.3 | 28.2 | 27.1 | 24.9 | 82 | 70 | Trace |
| 18 | 1013.4 | 30.1 | 28.0 | 26.4 | 25.3 | 86 | 82 | 6.8 |
| 19 | 1013.5 | 27.6 | 26.5 | 25.2 | 25.2 | 93 | 71 | 58.8 |
| 20 | 1013.9 | 30.0 | 27.6 | 26.0 | 24.1 | 82 | 44 | Trace |
| 21 | 1013.6 | 30.9 | 27.6 | 24.2 | 23.7 | 80 | 48 | 16.2 |
| 22 | 1012.5 | 29.4 | 26.8 | 24.5 | 22.7 | 79 | 75 | 0.9 |
| 23 | 1011.9 | 30.5 | 27.1 | 24.8 | 20.9 | 70 | 22 | - |
| 24 | 1012.9 | 28.7 | 27.2 | 26.4 | 22.8 | 77 | 83 | Trace |
| 25 | 1013.1 | 28.6 | 26.9 | 25.9 | 22.0 | 75 | 51 | 0.1 |
| 26 | 1012.6 | 30.1 | 27.3 | 25.2 | 19.7 | 65 | 17 | - |
| 27 | 1011.7 | 31.0 | 27.9 | 25.4 | 19.1 | 59 | 13 | - |
| 28 | 1010.7 | 30.5 | 28.0 | 26.0 | 21.6 | 69 | 31 | - |
| 29 | 1012.8 | 31.6 | 28.5 | 27.0 | 23.8 | 76 | 57 | Trace |
| 30 | 1014.6 | 29.1 | 27.7 | 26.0 | 24.2 | 82 | 73 | 2.9 |
| Mean/Total | 1009.9 | 29.9 | 27.6 | 25.9 | 23.1 | 77 | 62 | 167.3 |
| Normal | 1008.8 | 30.3 | 27.6 | 25.5 | 23.3 | 78 | 63 | 299.7 |
| Station | Hong Kong Observatory | |||||||
| Date SEPTEMBER |
Total Bright Sunshine (hours) |
Daily Global Solar Radiation (MJ/m2) |
Total Evaporation (mm) |
Prevailing Wind Direction (degrees) |
Mean Wind Speed (km/h) |
|---|---|---|---|---|---|
| 1 | 10.7 | 23.24 | 6.2 | 080 | 14.4 |
| 2 | 10.4 | 22.05 | 5.6 | 060 | 17.0 |
| 3 | 5.9 | 12.24 | 4.2 | 110 | 14.9 |
| 4 | 8.2 | 14.19 | 3.2 | 160 | 6.7 |
| 5 | 6.5 | 14.86 | 4.1 | 360 | 6.7 |
| 6 | 6.1 | 11.98 | 3.6 | 290 | 13.0 |
| 7 | 7.5 | 15.07 | 6.4 | 170 | 10.3 |
| 8 | - | 6.68 | 2.7 | 090 | 14.1 |
| 9 | - | 4.91 | 1.4 | 310 | 11.5 |
| 10 | 0.1 | 7.17 | 3.0 | 010 | 17.1 |
| 11 | 1.4 | 10.77 | 3.4 | 010 | 29.4 |
| 12 | 0.9 | 13.78 | 4.2 | 010 | 17.6 |
| 13 | 8.5 | 19.05 | 5.6 | 010 | 12.7 |
| 14 | 6.7 | 15.61 | 4.9 | 010 | 9.2 |
| 15 | 3.5 | 14.24 | 4.5 | 200 | 7.1 |
| 16 | 7.9 | 16.71 | 4.1 | 150 | 9.0 |
| 17 | 7.7 | 18.71 | 4.4 | 080 | 13.5 |
| 18 | 9.0 | 20.78 | 9.3 | 070 | 22.3 |
| 19 | 1.0 | 4.91 | 1.8 | 100 | 15.0 |
| 20 | 8.5 | 16.31 | 3.8 | 110 | 6.5 |
| 21 | 8.8 | 18.26 | 5.8 | 240 | 12.5 |
| 22 | 3.7 | 10.26 | 4.2 | 010 | 13.3 |
| 23 | 10.1 | 20.12 | 4.2 | 010 | 15.1 |
| 24 | 4.6 | 14.52 | 4.5 | 100 | 27.0 |
| 25 | 9.1 | 18.74 | 4.6 | 090 | 26.2 |
| 26 | 10.4 | 20.28 | 6.1 | 050 | 12.3 |
| 27 | 9.6 | 18.94 | 5.5 | 010 | 10.0 |
| 28 | 7.6 | 15.70 | 3.7 | 010 | 9.9 |
| 29 | 8.7 | 16.20 | 4.7 | 110 | 10.9 |
| 30 | 7.4 | 16.48 | 4.4 | 100 | 27.1 |
| Mean/Total | 190.5 | 15.09 | 134.1 | 090 | 14.4 |
| Normal | 181.7 | 16.49 | 150.3 | 090 | 21.9 |
| Station | King's Park | Waglan Island^ | |||
The minimum pressure recorded at the Hong Kong Observatory was 1000.7 hectopascals at 1458 HKT on 6 September.
The maximum air temperature recorded at the Hong Kong Observatory was 32.6 degrees C at 1515 HKT on 6 September.
The minimum air temperature recorded at the Hong Kong Observatory was 23.9 degrees C at 0517 HKT on 10 September.
The maximum gust peak speed recorded at Waglan Island was 58 kilometres per hour from 090 degrees at 0844 HKT on 8 September.
The maximum instantaneous rate of rainfall recorded at King's Park was 149 millimetres per hour at 0700 HKT on 19 September.
^ In case the data are not available from Waglan Island, observations of Cheung Chau or other nearby weather stations will be incorporated in computing the Prevailing Wind Direction and Mean Wind Speed.