EXTRACT OF METEOROLOGICAL OBSERVATIONS FOR HONG KONG, APRIL 1998
EXTRACT OF METEOROLOGICAL OBSERVATIONS FOR HONG KONG,
APRIL 1998
| Date APRIL |
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 | 1014.4 | 27.5 | 24.2 | 21.9 | 21.1 | 83 | 76 | - |
| 2 | 1018.3 | 26.4 | 23.0 | 20.7 | 18.7 | 77 | 85 | - |
| 3 | 1019.9 | 22.8 | 20.6 | 19.3 | 16.2 | 76 | 86 | - |
| 4 | 1019.4 | 24.5 | 22.0 | 20.0 | 17.7 | 77 | 82 | Trace |
| 5 | 1018.6 | 27.8 | 24.2 | 21.3 | 21.4 | 84 | 66 | Trace |
| 6 | 1016.8 | 27.2 | 24.6 | 22.9 | 21.0 | 81 | 60 | - |
| 7 | 1013.9 | 27.7 | 24.5 | 22.3 | 21.4 | 83 | 59 | - |
| 8 | 1012.0 | 28.1 | 25.1 | 23.2 | 22.2 | 84 | 79 | - |
| 9 | 1010.6 | 28.4 | 26.2 | 24.1 | 23.0 | 83 | 77 | - |
| 10 | 1012.9 | 29.0 | 26.3 | 24.6 | 23.6 | 85 | 57 | - |
| 11 | 1011.8 | 28.5 | 26.2 | 24.6 | 23.5 | 85 | 76 | Trace |
| 12 | 1008.5 | 26.5 | 23.5 | 21.1 | 22.0 | 91 | 92 | 36.7 |
| 13 | 1008.1 | 27.2 | 24.5 | 23.3 | 22.3 | 88 | 79 | 0.1 |
| 14 | 1011.3 | 26.3 | 23.8 | 22.5 | 21.0 | 85 | 84 | 9.9 |
| 15 | 1013.9 | 25.9 | 23.8 | 22.3 | 18.4 | 73 | 78 | - |
| 16 | 1013.0 | 27.0 | 23.9 | 21.7 | 18.1 | 70 | 42 | - |
| 17 | 1013.2 | 30.8 | 26.0 | 22.1 | 15.2 | 54 | 39 | - |
| 18 | 1014.5 | 29.8 | 26.3 | 24.2 | 17.0 | 57 | 69 | - |
| 19 | 1013.8 | 26.4 | 24.3 | 22.4 | 20.8 | 81 | 89 | 2.0 |
| 20 | 1014.6 | 25.4 | 23.0 | 20.7 | 19.6 | 81 | 90 | 1.0 |
| 21 | 1014.5 | 27.0 | 24.4 | 22.7 | 22.6 | 90 | 92 | 1.6 |
| 22 | 1011.5 | 29.2 | 26.7 | 24.3 | 23.7 | 84 | 82 | Trace |
| 23 | 1009.5 | 29.4 | 27.8 | 26.6 | 24.0 | 80 | 87 | Trace |
| 24 | 1009.6 | 29.0 | 28.0 | 26.8 | 24.6 | 82 | 88 | 3.8 |
| 25 | 1011.2 | 28.1 | 26.7 | 24.9 | 24.7 | 89 | 90 | 32.6 |
| 26 | 1010.5 | 28.8 | 26.2 | 22.6 | 23.9 | 87 | 90 | 76.4 |
| 27 | 1011.4 | 24.1 | 23.2 | 22.1 | 22.5 | 95 | 91 | 66.9 |
| 28 | 1010.9 | 26.9 | 24.9 | 23.1 | 22.0 | 85 | 85 | 0.3 |
| 29 | 1010.8 | 27.9 | 25.3 | 23.8 | 22.7 | 85 | 87 | 0.4 |
| 30 | 1011.0 | 27.4 | 25.4 | 24.6 | 23.6 | 89 | 88 | 5.4 |
| Mean/Total | 1013.0 | 27.4 | 24.8 | 22.9 | 21.3 | 82 | 78 | 237.1 |
| Normal | 1013.1 | 24.9 | 22.2 | 20.2 | 19.0 | 83 | 78 | 161.5 |
| Station | Hong Kong Observatory | |||||||
| Date APRIL |
Total Bright Sunshine (hours) |
Daily Global Solar Radiation (MJ/m2) |
Total Evaporation (mm) |
Prevailing Wind Direction (degrees) |
Mean Wind Speed (km/h) |
|---|---|---|---|---|---|
| 1 | 4.8 | 17.83 | 4.1 | 250 | 10.3 |
| 2 | 5.6 | 17.21 | 4.6 | 060 | 26.2 |
| 3 | 5.1 | 17.18 | 4.4 | 070 | 33.8 |
| 4 | 5.8 | 18.86 | 3.8 | 050 | 27.0 |
| 5 | 8.5 | 22.00 | 4.2 | 050 | 20.0 |
| 6 | 6.6 | 16.34 | 3.5 | 030 | 10.1 |
| 7 | 9.9 | 20.54 | 3.8 | 010 | 7.6 |
| 8 | 6.5 | 17.98 | 3.5 | 080 | 10.1 |
| 9 | 0.9 | 7.92 | 3.0 | 120 | 13.8 |
| 10 | 6.1 | 16.15 | 3.1 | 140 | 9.4 |
| 11 | 4.4 | 13.49 | 3.7 | 130 | 15.1 |
| 12 | - | 3.33 | 0.6 | 150 | 21.4 |
| 13 | 2.1 | 9.67 | 2.9 | 030 | 9.4 |
| 14 | 0.8 | 6.18 | 1.9 | 010 | 15.6 |
| 15 | 3.8 | 15.11 | 4.3 | 060 | 23.0 |
| 16 | 8.6 | 18.42 | 4.2 | 050 | 12.3 |
| 17 | 10.6 | 22.09 | 5.5 | 050 | 4.5 |
| 18 | 9.5 | 21.68 | 5.5 | 060 | 16.4 |
| 19 | 0.4 | 8.48 | 2.8 | 060 | 26.9 |
| 20 | 2.7 | 12.12 | 2.3 | 060 | 33.2 |
| 21 | 2.7 | 13.48 | 2.5 | 070 | 23.5 |
| 22 | 5.4 | 11.17 | 3.1 | 200 | 23.2 |
| 23 | 3.8 | 10.56 | 3.3 | 190 | 26.9 |
| 24 | 0.5 | 6.62 | 2.8 | 220 | 23.6 |
| 25 | 0.6 | 7.26 | 0.5 | 040 | 10.2 |
| 26 | 1.7 | 8.39 | 2.8 | 180 | 18.1 |
| 27 | - | 1.13 | 2.1 | 090 | 20.8 |
| 28 | 1.2 | 10.48 | 2.2 | 190 | 16.9 |
| 29 | 4.0 | 15.64 | 3.2 | 050 | 15.4 |
| 30 | 0.8 | 7.43 | 1.2 | 060 | 11.5 |
| Mean/Total | 123.4 | 13.16 | 95.4 | 060 | 17.9 |
| Normal | 108.9 | 13.14 | 106.9 | 080 | 19.7 |
| Station | King's Park | Waglan Island^ | |||
The minimum pressure recorded at the Hong Kong Observatory was 1005.6 hectopascals at 0345 HKT on 13 April.
The maximum air temperature recorded at the Hong Kong Observatory was 30.8 degrees C at 1246 HKT on 17 April.
The minimum air temperature recorded at the Hong Kong Observatory was 19.3 degrees C at 0716 HKT on 3 April.
The maximum gust peak speed recorded at Waglan Island was 65 kilometres per hour from 290 degrees at 0617 HKT on 12 April.
The maximum instantaneous rate of rainfall recorded at the Hong Kong Observatory was 335 millimetres per hour at 2142 HKT on 26 April.
^ 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.