EXTRACT OF METEOROLOGICAL OBSERVATIONS FOR HONG KONG, SEPTEMBER 1998
EXTRACT OF METEOROLOGICAL OBSERVATIONS FOR HONG KONG,
SEPTEMBER 1998
| 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 | 1009.6 | 27.6 | 26.3 | 25.0 | 25.0 | 93 | 91 | 65.7 |
| 2 | 1011.8 | 28.9 | 27.2 | 26.0 | 25.2 | 90 | 86 | 3.5 |
| 3 | 1011.8 | 30.0 | 27.9 | 26.6 | 25.2 | 85 | 72 | 0.1 |
| 4 | 1009.8 | 29.6 | 28.1 | 27.3 | 25.4 | 85 | 83 | - |
| 5 | 1007.1 | 31.1 | 28.7 | 26.9 | 25.2 | 82 | 85 | 0.5 |
| 6 | 1007.1 | 30.1 | 27.0 | 25.3 | 25.0 | 89 | 88 | 32.8 |
| 7 | 1008.9 | 29.3 | 27.5 | 26.3 | 25.1 | 87 | 83 | 3.2 |
| 8 | 1009.1 | 30.7 | 28.4 | 26.8 | 24.6 | 80 | 74 | Trace |
| 9 | 1006.4 | 29.4 | 27.9 | 27.0 | 24.4 | 81 | 83 | Trace |
| 10 | 1005.2 | 27.7 | 26.3 | 25.1 | 24.6 | 90 | 90 | 41.1 |
| 11 | 1004.2 | 31.0 | 27.6 | 25.9 | 24.6 | 84 | 88 | 7.9 |
| 12 | 1003.9 | 27.5 | 26.4 | 25.8 | 25.0 | 92 | 89 | 29.8 |
| 13 | 1004.6 | 27.6 | 26.6 | 25.6 | 25.1 | 92 | 89 | 21.2 |
| 14 | 1005.4 | 29.9 | 27.6 | 25.6 | 25.2 | 87 | 77 | 24.7 |
| 15 | 1005.0 | 31.1 | 28.9 | 27.3 | 24.8 | 79 | 37 | - |
| 16 | 1007.0 | 30.9 | 28.9 | 27.6 | 24.0 | 75 | 35 | - |
| 17 | 1008.5 | 30.4 | 28.5 | 27.2 | 23.8 | 76 | 61 | Trace |
| 18 | 1008.1 | 29.3 | 27.7 | 26.7 | 22.6 | 74 | 57 | Trace |
| 19 | 1007.4 | 30.5 | 28.0 | 25.9 | 22.4 | 72 | 59 | - |
| 20 | 1006.5 | 32.1 | 28.9 | 26.2 | 19.0 | 56 | 62 | - |
| 21 | 1007.4 | 31.1 | 28.5 | 25.9 | 19.5 | 58 | 29 | - |
| 22 | 1010.6 | 31.1 | 28.3 | 26.6 | 22.5 | 71 | 40 | - |
| 23 | 1012.3 | 30.4 | 28.1 | 26.6 | 23.9 | 78 | 72 | 0.4 |
| 24 | 1012.7 | 30.4 | 28.1 | 26.8 | 23.2 | 75 | 68 | Trace |
| 25 | 1012.5 | 30.0 | 27.8 | 26.4 | 22.4 | 73 | 33 | - |
| 26 | 1011.9 | 30.7 | 27.9 | 26.1 | 21.8 | 70 | 22 | - |
| 27 | 1009.9 | 31.9 | 29.0 | 26.9 | 23.0 | 71 | 59 | - |
| 28 | 1008.1 | 31.8 | 28.4 | 26.0 | 20.4 | 62 | 36 | - |
| 29 | 1007.6 | 29.4 | 26.9 | 24.9 | 18.6 | 61 | 27 | - |
| 30 | 1008.6 | 30.4 | 27.1 | 24.3 | 18.9 | 61 | 51 | - |
| Mean/Total | 1008.3 | 30.1 | 27.8 | 26.2 | 23.3 | 78 | 64 | 230.9 |
| 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 | 0.7 | 1.13 | 3.0 | 020 | 13.1 |
| 2 | 2.8 | 9.83 | 1.7 | 080 | 19.8 |
| 3 | 6.4 | 16.98 | 3.7 | 090 | 18.7 |
| 4 | 2.7 | 12.44 | 2.6 | 090 | 8.0 |
| 5 | 2.0 | 14.12 | 2.8 | 240 | 13.8 |
| 6 | 0.6 | 6.46 | 1.9 | 250 | 11.4 |
| 7 | 0.7 | 8.07 | 1.8 | 010 | 6.8 |
| 8 | 6.7 | 15.71 | 3.9 | 260 | 13.7 |
| 9 | 2.4 | 10.84 | 2.9 | 070 | 9.2 |
| 10 | 0.8 | 6.56 | 3.1 | 060 | 32.1 |
| 11 | 1.2 | 11.24 | 2.9 | 010 | 18.8 |
| 12 | - | 1.45 | 1.8 | 060 | 40.3 |
| 13 | 0.3 | 4.44 | 3.9 | 080 | 38.8 |
| 14 | 6.0 | 13.67 | 3.1 | 080 | 38.9 |
| 15 | 9.5 | 21.20 | 4.9 | 060 | 30.0 |
| 16 | 10.0 | 21.52 | 5.9 | 070 | 40.8 |
| 17 | 9.4 | 19.96 | 5.3 | 070 | 33.5 |
| 18 | 6.7 | 16.94 | 4.4 | 080 | 31.0 |
| 19 | 8.6 | 14.30 | 4.4 | 080 | 13.5 |
| 20 | 8.8 | 19.00 | 6.1 | 350 | 19.0 |
| 21 | 9.6 | 19.47 | 5.7 | 360 | 17.4 |
| 22 | 5.7 | 13.53 | 3.5 | 090 | 18.5 |
| 23 | 4.7 | 14.21 | 4.1 | 080 | 23.0 |
| 24 | 7.5 | 17.93 | 4.8 | 080 | 28.5 |
| 25 | 9.8 | 19.52 | 4.8 | 080 | 31.0 |
| 26 | 8.9 | 18.76 | 4.3 | 070 | 25.1 |
| 27 | 5.6 | 13.54 | 4.8 | 070 | 13.3 |
| 28 | 9.2 | 18.30 | 6.0 | 360 | 34.2 |
| 29 | 7.1 | 17.35 | 5.5 | 360 | 36.7 |
| 30 | 5.5 | 12.52 | 4.0 | 360 | 19.5 |
| Mean/Total | 159.9 | 13.70 | 117.6 | 080 | 23.3 |
| 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 1002.1 hectopascals at 1520 HKT on 11 September.
The maximum air temperature recorded at the Hong Kong Observatory was 32.1 degrees C at 1430 HKT on 20 September.
The minimum air temperature recorded at the Hong Kong Observatory was 24.3 degrees C at 0631 HKT on 30 September.
The maximum gust peak speed recorded at Waglan Island was 75 kilometres per hour from 060 degrees at 2055 HKT on 12 September.
The maximum instantaneous rate of rainfall recorded at King's Park was 150 millimetres per hour at 0127 HKT on 14 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.