EXTRACT OF METEOROLOGICAL OBSERVATIONS FOR HONG KONG, APRIL 2004
EXTRACT OF METEOROLOGICAL OBSERVATIONS FOR HONG KONG,
APRIL 2004
| 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 | 1015.6 | 21.7 | 20.2 | 18.9 | 19.0 | 93 | 94 | 21.0 |
| 2 | 1017.1 | 21.1 | 19.9 | 18.8 | 16.1 | 79 | 86 | Trace |
| 3 | 1017.7 | 22.0 | 19.3 | 16.5 | 16.0 | 81 | 85 | 2.2 |
| 4 | 1017.9 | 22.6 | 20.1 | 18.9 | 17.5 | 85 | 63 | Trace |
| 5 | 1016.6 | 20.6 | 19.3 | 17.8 | 15.8 | 81 | 83 | - |
| 6 | 1013.3 | 23.1 | 21.1 | 19.4 | 18.7 | 86 | 86 | - |
| 7 | 1012.2 | 25.0 | 22.8 | 21.3 | 21.1 | 90 | 88 | 0.2 |
| 8 | 1016.1 | 23.1 | 19.0 | 18.0 | 14.5 | 76 | 88 | 2.0 |
| 9 | 1016.5 | 20.7 | 19.2 | 18.1 | 15.3 | 78 | 85 | - |
| 10 | 1014.4 | 23.4 | 21.0 | 19.2 | 17.2 | 79 | 71 | - |
| 11 | 1012.0 | 27.2 | 23.8 | 21.2 | 20.4 | 82 | 73 | - |
| 12 | 1009.9 | 27.0 | 24.6 | 22.5 | 20.8 | 80 | 57 | - |
| 13 | 1008.9 | 28.6 | 25.5 | 23.8 | 22.6 | 84 | 82 | Trace |
| 14 | 1010.7 | 24.8 | 22.4 | 20.2 | 21.2 | 93 | 92 | 54.3 |
| 15 | 1012.1 | 21.8 | 20.9 | 20.0 | 18.7 | 87 | 91 | 0.3 |
| 16 | 1011.8 | 23.2 | 22.1 | 21.1 | 20.1 | 89 | 90 | 2.4 |
| 17 | 1008.6 | 26.8 | 22.7 | 21.4 | 21.5 | 93 | 88 | 55.4 |
| 18 | 1008.3 | 26.8 | 23.7 | 21.4 | 17.8 | 72 | 47 | - |
| 19 | 1011.5 | 29.2 | 25.4 | 22.4 | 19.2 | 69 | 26 | - |
| 20 | 1013.3 | 27.5 | 25.2 | 23.1 | 21.2 | 79 | 27 | - |
| 21 | 1011.6 | 27.4 | 25.6 | 24.1 | 23.2 | 87 | 67 | - |
| 22 | 1008.9 | 30.7 | 27.4 | 25.4 | 23.0 | 77 | 69 | - |
| 23 | 1008.6 | 29.9 | 27.4 | 25.9 | 23.6 | 80 | 64 | - |
| 24 | 1012.8 | 27.1 | 23.9 | 22.3 | 21.2 | 85 | 87 | Trace |
| 25 | 1013.7 | 23.4 | 22.3 | 20.9 | 20.2 | 88 | 93 | Trace |
| 26 | 1011.2 | 26.8 | 24.8 | 22.9 | 22.4 | 87 | 85 | Trace |
| 27 | 1010.9 | 29.5 | 26.4 | 23.3 | 22.3 | 79 | 73 | 8.5 |
| 28 | 1013.8 | 24.8 | 23.0 | 21.8 | 19.9 | 83 | 91 | 0.9 |
| 29 | 1012.1 | 23.6 | 22.9 | 22.1 | 20.9 | 89 | 92 | Trace |
| 30 | 1009.9 | 28.6 | 25.2 | 22.9 | 22.6 | 86 | 63 | - |
| Mean/Total | 1012.6 | 25.3 | 22.9 | 21.2 | 19.8 | 83 | 76 | 147.2 |
| 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 | - | 2.17 | 1.5 | 100 | 16.8* |
| 2 | 1.0 | 7.20 | 2.2 | 090 | 20.0* |
| 3 | 1.5 | 8.74 | 1.6 | 130 | 8.8* |
| 4 | 4.5 | 11.75 | 3.3 | 090 | 17.8* |
| 5 | 3.3 | 14.45 | 3.1 | 090 | 23.9* |
| 6 | 3.2 | 13.76 | 5.9 | 100 | 18.5* |
| 7 | 0.8 | 9.43 | 3.2 | 100 | 14.6* |
| 8 | - | 5.50 | 1.5 | 010 | 26.2* |
| 9 | 0.5 | 8.97 | 2.1 | 070 | 19.8 |
| 10 | 6.0 | 17.33 | 2.7 | 070 | 15.5 |
| 11 | 6.6 | 18.82 | 3.7 | 040 | 6.3 |
| 12 | 6.8 | 16.93 | 4.3 | 230 | 7.6 |
| 13 | 5.7 | 17.17 | 3.7 | 230 | 9.1 |
| 14 | 0.9 | 8.63 | 2.8 | 090 | 30.7 |
| 15 | - | 6.82 | 1.5 | 060 | 23.5 |
| 16 | - | 5.86 | 1.1 | 040 | 12.5 |
| 17 | 1.9 | 8.57 | 4.6 | 040 | 10.8 |
| 18 | 10.4 | 23.91 | 5.7 | 280 | 15.9 |
| 19 | 10.6 | 20.99 | 4.2 | 240 | 7.5 |
| 20 | 10.7 | 21.51 | 4.4 | 120 | 6.1 |
| 21 | 3.7 | 13.10 | 3.3 | 090 | 8.8 |
| 22 | 10.8 | 23.46 | 6.2 | 230 | 13.6 |
| 23 | 6.5 | 16.67 | 3.7 | 240 | 21.3 |
| 24 | 1.3 | 11.53 | 5.2 | 100 | 35.5 |
| 25 | 0.3 | 9.78 | 1.7 | 090 | 31.5 |
| 26 | 5.6 | 15.92 | 2.9 | 080 | 11.5 |
| 27 | 7.9 | 19.59 | 4.6 | 080 | 16.5 |
| 28 | - | 6.67 | 2.7 | 080 | 35.0 |
| 29 | - | 6.80 | 1.7 | 080 | 28.3 |
| 30 | 5.3 | 14.82 | 2.4 | 070 | 12.3 |
| Mean/Total | 115.8 | 12.90 | 97.5 | 090 | 17.5 |
| 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 1005.5 hectopascals at 1532 HKT on 17 April.
The maximum air temperature recorded at the Hong Kong Observatory was 30.7 degrees C at 1454 HKT on 22 April.
The minimum air temperature recorded at the Hong Kong Observatory was 16.5 degrees C at 0649 HKT on 3 April.
The maximum gust peak speed recorded at Waglan Island was 76 kilometres per hour from 310 degrees at 1824 HKT on 17 April.
The maximum instantaneous rate of rainfall recorded at King's Park was 56 millimetres per hour at 1526 HKT on 1 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.
*Wind data recorded at Cheung Chau were used due to interruption of power supply at Waglan Island.