EXTRACT OF METEOROLOGICAL OBSERVATIONS FOR HONG KONG, AUGUST 1999
EXTRACT OF METEOROLOGICAL OBSERVATIONS FOR HONG KONG,
AUGUST 1999
| Date AUGUST |
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 | 1002.1 | 32.6 | 30.0 | 28.3 | 25.5 | 77 | 70 | Trace |
| 2 | 999.1 | 32.6 | 29.8 | 27.4 | 25.4 | 78 | 68 | 6.2 |
| 3 | 998.4 | 31.4 | 29.7 | 28.3 | 25.8 | 80 | 84 | Trace |
| 4 | 999.6 | 30.3 | 28.3 | 25.7 | 25.8 | 87 | 86 | 39.9 |
| 5 | 999.6 | 32.6 | 28.4 | 25.3 | 24.9 | 82 | 86 | 42.3 |
| 6 | 998.4 | 31.4 | 28.6 | 26.1 | 24.7 | 80 | 88 | Trace |
| 7 | 999.2 | 32.2 | 29.8 | 28.5 | 25.8 | 79 | 85 | - |
| 8 | 1001.2 | 32.6 | 29.6 | 26.7 | 25.2 | 78 | 86 | 3.3 |
| 9 | 1002.4 | 30.4 | 28.8 | 27.0 | 25.8 | 84 | 91 | 19.5 |
| 10 | 1003.4 | 31.0 | 27.8 | 25.0 | 25.3 | 87 | 89 | 32.3 |
| 11 | 1002.9 | 29.6 | 27.2 | 25.2 | 25.3 | 89 | 93 | 41.8 |
| 12 | 1002.2 | 28.7 | 27.8 | 25.9 | 24.9 | 85 | 97 | 25.6 |
| 13 | 1003.1 | 28.4 | 26.9 | 25.4 | 25.0 | 89 | 95 | 20.2 |
| 14 | 1006.4 | 30.2 | 28.3 | 26.1 | 25.2 | 84 | 89 | 15.8 |
| 15 | 1010.3 | 32.0 | 29.2 | 26.5 | 25.7 | 82 | 79 | 5.0 |
| 16 | 1009.6 | 32.0 | 29.4 | 27.9 | 25.1 | 78 | 61 | Trace |
| 17 | 1009.4 | 32.4 | 29.6 | 27.9 | 24.2 | 73 | 60 | - |
| 18 | 1010.0 | 32.3 | 29.6 | 27.4 | 23.9 | 72 | 47 | - |
| 19 | 1009.1 | 32.7 | 29.7 | 27.2 | 25.4 | 78 | 41 | - |
| 20 | 1004.9 | 33.2 | 30.5 | 27.9 | 24.9 | 73 | 14 | - |
| 21 | 1000.4 | 35.1 | 29.8 | 26.2 | 24.8 | 75 | 76 | 6.8 |
| 22 | 991.6 | 28.8 | 26.5 | 23.9 | 22.8 | 81 | 95 | 157.9 |
| 23 | 1006.2 | 26.1 | 25.0 | 23.7 | 23.2 | 90 | 100 | 207.4 |
| 24 | 1010.4 | 27.3 | 25.7 | 23.9 | 23.7 | 89 | 95 | 174.9 |
| 25 | 1010.0 | 27.3 | 25.7 | 23.8 | 24.3 | 92 | 92 | 69.2 |
| 26 | 1010.8 | 30.8 | 27.5 | 25.1 | 24.7 | 85 | 86 | 0.3 |
| 27 | 1011.7 | 30.6 | 28.0 | 26.6 | 25.0 | 84 | 88 | - |
| 28 | 1012.0 | 29.7 | 27.0 | 25.3 | 24.8 | 88 | 91 | 10.6 |
| 29 | 1011.4 | 29.1 | 27.4 | 26.0 | 24.9 | 86 | 85 | 8.4 |
| 30 | 1009.9 | 30.9 | 28.4 | 27.0 | 24.0 | 77 | 85 | Trace |
| 31 | 1010.4 | 31.0 | 28.2 | 26.0 | 24.7 | 82 | 87 | 4.6 |
| Mean/Total | 1005.0 | 30.8 | 28.3 | 26.2 | 24.9 | 82 | 80 | 892.0 |
| Normal | 1005.1 | 31.3 | 28.4 | 26.3 | 24.8 | 81 | 66 | 391.4 |
| Station | Hong Kong Observatory | |||||||
| Date AUGUST |
Total Bright Sunshine (hours) |
Daily Global Solar Radiation (MJ/m2) |
Total Evaporation (mm) |
Prevailing Wind Direction (degrees) |
Mean Wind Speed (km/h) |
|---|---|---|---|---|---|
| 1 | 11.6 | 25.10 | 6.7 | 120 | 12.2 |
| 2 | 7.0 | 15.13 | 4.4 | 200 | 7.1 |
| 3 | 2.4 | 11.85 | 6.5 | 240 | 7.4 |
| 4 | 2.3 | 10.67 | 2.5 | 060 | 23.8 |
| 5 | 6.0 | 15.18 | 6.7 | 060 | 24.5 |
| 6 | 5.5 | 15.43 | 6.4 | 260 | 22.2 |
| 7 | 1.1 | 13.23 | 4.3 | 230 | 21.5 |
| 8 | 6.8 | 16.88 | 5.6 | 220 | 16.8 |
| 9 | 0.1 | 8.61 | 4.3 | 190 | 24.9 |
| 10 | 3.9 | 12.88 | 3.7 | 210 | 14.0 |
| 11 | 0.5 | 6.06 | 4.8 | 230 | 25.4 |
| 12 | - | 4.43 | 4.5 | 270 | 36.1 |
| 13 | - | 2.25 | 2.4 | 220 | 17.1 |
| 14 | 1.0 | 10.40 | 3.4 | 220 | 21.5 |
| 15 | 11.5 | 21.09 | 4.4 | 150 | 16.8 |
| 16 | 9.4 | 17.43 | 4.6 | 220 | 13.1 |
| 17 | 9.4 | 20.77 | 5.1 | 230 | 18.4 |
| 18 | 11.5 | 23.88 | 5.8 | 250 | 18.0 |
| 19 | 9.1 | 17.70 | 4.2 | 280 | 9.3 |
| 20 | 8.2 | 17.15 | 4.2 | 220 | 12.5 |
| 21 | 6.9 | 16.44 | 5.6 | 360 | 22.6 |
| 22 | - | 1.93 | 4.3 | 350 | 64.1 |
| 23 | - | 3.04 | 3.5 | 200 | 53.0 |
| 24 | - | 4.34 | 3.5 | 180 | 24.2 |
| 25 | - | 2.04 | 2.5 | 210 | 19.2 |
| 26 | 6.3 | 17.78 | 3.8 | 170 | 8.8 |
| 27 | 5.4 | 12.28 | 3.1 | 130 | 6.5 |
| 28 | 1.6 | 8.07 | 3.6 | 160 | 11.3 |
| 29 | 0.5 | 7.27 | 3.6 | 200 | 14.5 |
| 30 | 6.2 | 14.37 | 3.7 | 220 | 15.9 |
| 31 | 4.3 | 15.68 | 3.5 | 250 | 8.2 |
| Mean/Total | 138.5 | 12.56 | 135.2 | 220 | 19.7 |
| Normal | 207.0 | 17.61 | 156.9 | 090 | 18.5 |
| Station | King's Park | Waglan Island^ | |||
The minimum pressure recorded at the Hong Kong Observatory was 981.9 hectopascals at 1535 HKT on 22 August.
The maximum air temperature recorded at the Hong Kong Observatory was 35.1 degrees C at 1450 HKT on 21 August.
The minimum air temperature recorded at the Hong Kong Observatory was 23.7 degrees C at 0754 HKT on 23 August.
The maximum gust peak speed recorded at Waglan Island was 148 kilometres per hour from 360 degrees at 1018 HKT on 22 August.
The maximum instantaneous rate of rainfall recorded at King's Park was 177 millimetres per hour at 0407 HKT on 25 August.
^ 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.