EXTRACT OF METEOROLOGICAL OBSERVATIONS FOR HONG KONG, APRIL 1997
EXTRACT OF METEOROLOGICAL OBSERVATIONS FOR HONG KONG,
APRIL 1997
| 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 | 1015.2 | 21.0 | 19.9 | 18.8 | 17.2 | 84 | 98 | - |
| 2 | 1012.6 | 24.4 | 22.2 | 20.4 | 20.2 | 88 | 81 | 0.1 |
| 3 | 1012.3 | 25.3 | 23.1 | 21.7 | 21.4 | 90 | 84 | - |
| 4 | 1013.0 | 23.0 | 21.4 | 19.6 | 19.3 | 88 | 87 | 9.4 |
| 5 | 1013.9 | 24.3 | 21.7 | 20.2 | 19.3 | 86 | 72 | 0.9 |
| 6 | 1013.6 | 21.7 | 20.9 | 19.8 | 19.7 | 93 | 96 | 3.6 |
| 7 | 1012.9 | 21.7 | 20.4 | 19.4 | 18.6 | 89 | 94 | 0.5 |
| 8 | 1012.0 | 25.1 | 22.8 | 21.0 | 20.8 | 89 | 90 | Trace |
| 9 | 1012.6 | 24.6 | 23.4 | 22.2 | 22.1 | 93 | 93 | Trace |
| 10 | 1015.8 | 22.4 | 20.8 | 20.0 | 19.7 | 93 | 98 | 50.2 |
| 11 | 1016.6 | 26.1 | 22.2 | 19.9 | 19.0 | 82 | 60 | - |
| 12 | 1014.8 | 25.3 | 22.4 | 20.9 | 18.4 | 78 | 60 | - |
| 13 | 1012.7 | 23.6 | 22.3 | 21.5 | 20.3 | 88 | 89 | 63.4 |
| 14 | 1012.5 | 25.4 | 23.3 | 21.7 | 22.0 | 92 | 89 | 1.5 |
| 15 | 1011.8 | 28.9 | 25.8 | 23.6 | 22.2 | 81 | 59 | Trace |
| 16 | 1014.1 | 24.7 | 22.7 | 21.8 | 19.5 | 82 | 89 | Trace |
| 17 | 1014.4 | 23.8 | 22.3 | 21.1 | 19.0 | 82 | 94 | Trace |
| 18 | 1013.8 | 26.6 | 23.7 | 21.8 | 21.7 | 89 | 91 | 1.0 |
| 19 | 1014.9 | 24.8 | 23.0 | 21.9 | 21.6 | 92 | 90 | Trace |
| 20 | 1014.2 | 24.1 | 22.4 | 21.4 | 20.2 | 87 | 93 | Trace |
| 21 | 1012.5 | 26.5 | 24.3 | 22.6 | 22.2 | 88 | 78 | Trace |
| 22 | 1013.9 | 29.0 | 24.6 | 22.9 | 21.6 | 84 | 80 | 0.9 |
| 23 | 1016.9 | 24.8 | 22.9 | 21.8 | 18.1 | 75 | 75 | - |
| 24 | 1017.6 | 22.6 | 21.6 | 20.9 | 13.6 | 61 | 94 | Trace |
| 25 | 1017.8 | 22.8 | 21.0 | 19.3 | 15.4 | 71 | 89 | Trace |
| 26 | 1017.1 | 24.6 | 22.0 | 20.1 | 13.3 | 59 | 79 | - |
| 27 | 1015.9 | 25.4 | 23.0 | 21.0 | 15.0 | 62 | 88 | Trace |
| 28 | 1013.5 | 29.1 | 25.0 | 21.9 | 19.8 | 74 | 68 | - |
| 29 | 1012.3 | 29.7 | 26.1 | 24.0 | 22.4 | 81 | 70 | Trace |
| 30 | 1012.3 | 28.4 | 25.4 | 24.1 | 22.5 | 84 | 82 | 1.7 |
| Mean/Total | 1014.1 | 25.0 | 22.8 | 21.2 | 19.5 | 83 | 84 | 133.2 |
| 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 | - | 4.55 | 4.2 | 070 | 32.4 |
| 2 | 4.8 | 13.99 | 2.8 | 040 | 16.5 |
| 3 | 2.0 | 12.00 | 2.8 | 070 | 13.1 |
| 4 | - | 3.99 | 0.4 | 090 | 14.0 |
| 5 | 1.9 | 10.05 | 3.0 | 350 | 7.6 |
| 6 | - | 3.21 | 0.2 | 050 | 24.9 |
| 7 | 0.3 | 7.20 | 1.3 | 060 | 28.4 |
| 8 | 0.8 | 8.41 | 1.6 | 020 | 13.0 |
| 9 | 0.1 | 5.72 | 0.4 | 040 | 12.5 |
| 10 | - | 4.88 | 1.2 | 070 | 30.2 |
| 11 | 5.2 | 16.85 | 3.1 | 060 | 18.3 |
| 12 | 8.8 | 22.27 | 4.8 | 070 | 26.5 |
| 13 | 0.2 | 8.51 | 3.1 | 030 | 18.2 |
| 14 | 1.4 | 11.92 | 1.9 | 040 | 12.0 |
| 15 | 10.4 | 22.81 | 5.5 | 220 | 7.8 |
| 16 | 0.4 | 11.52 | 3.0 | 070 | 36.0 |
| 17 | 0.8 | 12.94 | 3.2 | 070 | 32.1 |
| 18 | 1.3 | 9.95 | 1.2 | 030 | 14.7 |
| 19 | - | 5.99 | 1.5 | 080 | 27.5 |
| 20 | 0.5 | 11.38 | 2.1 | 060 | 29.7 |
| 21 | 5.2 | 16.99 | 3.1 | 030 | 13.2 |
| 22 | 3.9 | 13.69 | 3.6 | 070 | 21.0 |
| 23 | 4.9 | 16.45 | 5.0 | 070 | 38.1 |
| 24 | - | 9.83 | 3.4 | 070 | 38.4 |
| 25 | 0.2 | 10.12 | 2.7 | 070 | 30.1 |
| 26 | 3.5 | 16.64 | 4.1 | 060 | 30.7 |
| 27 | 0.5 | 10.08 | 3.0 | 040 | 17.0 |
| 28 | 5.7 | 18.16 | 3.3 | 030 | 11.5 |
| 29 | 6.5 | 13.93 | 3.7 | 210 | 9.7 |
| 30 | 4.3 | 13.61 | 2.5 | 230 | 13.1 |
| Mean/Total | 73.6 | 11.59 | 81.7 | 070 | 21.3 |
| Normal | 108.9 | 13.14 | 106.9 | 080 | 19.7 |
| Station | King's Park | Waglan Island^ | |||
The minimum pressure recorded at the Royal Observatory was 1009.3 hectopascals at 1642 HKT on 15 April.
The maximum air temperature recorded at the Royal Observatory was 29.7 degrees C at 1428 HKT on 29 April.
The minimum air temperature recorded at the Royal Observatory was 18.8 degrees C at 0652 HKT on 1 April.
The maximum gust peak speed recorded at Waglan Island was 65 kilometres per hour from 010 degrees at 0613 HKT on 4 April.
The maximum instantaneous rate of rainfall recorded at King's Park was 119 millimetres per hour at 2231 HKT on 13 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.