EXTRACT OF METEOROLOGICAL OBSERVATIONS FOR HONG KONG, JULY 2004
EXTRACT OF METEOROLOGICAL OBSERVATIONS FOR HONG KONG,
JULY 2004
| Date JULY |
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 | 997.5 | 34.6 | 31.6 | 29.1 | 26.8 | 76 | 48 | Trace |
| 2 | 998.1 | 33.8 | 30.8 | 29.4 | 26.2 | 77 | 80 | 0.1 |
| 3 | 1000.1 | 30.5 | 29.4 | 28.6 | 26.5 | 85 | 91 | 8.6 |
| 4 | 1003.4 | 30.9 | 29.0 | 26.4 | 25.9 | 84 | 83 | 2.0 |
| 5 | 1004.6 | 31.5 | 29.9 | 28.2 | 25.7 | 78 | 84 | 1.0 |
| 6 | 1005.6 | 30.9 | 29.9 | 29.3 | 25.8 | 79 | 87 | 0.4 |
| 7 | 1007.5 | 31.9 | 29.8 | 26.6 | 25.8 | 79 | 81 | 18.3 |
| 8 | 1008.9 | 32.3 | 29.8 | 28.7 | 25.7 | 79 | 86 | - |
| 9 | 1009.3 | 31.7 | 29.5 | 28.5 | 24.5 | 75 | 77 | Trace |
| 10 | 1008.7 | 31.2 | 29.0 | 27.4 | 24.5 | 77 | 84 | 3.1 |
| 11 | 1007.3 | 31.0 | 29.1 | 27.2 | 24.6 | 77 | 79 | 1.2 |
| 12 | 1008.3 | 30.8 | 29.0 | 27.3 | 24.7 | 78 | 83 | 5.3 |
| 13 | 1009.7 | 30.5 | 28.5 | 25.9 | 24.5 | 80 | 71 | 8.1 |
| 14 | 1009.0 | 32.1 | 29.1 | 27.0 | 23.9 | 74 | 33 | - |
| 15 | 1008.8 | 32.8 | 29.1 | 26.8 | 24.0 | 74 | 45 | - |
| 16 | 1006.3 | 28.1 | 25.5 | 23.5 | 23.1 | 87 | 81 | 77.5 |
| 17 | 1008.0 | 26.7 | 25.0 | 22.7 | 23.6 | 92 | 84 | 44.4 |
| 18 | 1006.0 | 31.3 | 27.9 | 24.8 | 24.4 | 82 | 65 | - |
| 19 | 1006.0 | 29.5 | 27.8 | 25.5 | 25.2 | 86 | 79 | 19.1 |
| 20 | 1008.6 | 29.1 | 27.3 | 25.6 | 25.0 | 87 | 86 | 6.9 |
| 21 | 1011.3 | 27.5 | 26.0 | 24.9 | 25.0 | 94 | 90 | 58.9 |
| 22 | 1011.7 | 29.7 | 27.7 | 25.2 | 24.9 | 85 | 80 | 27.6 |
| 23 | 1010.1 | 30.1 | 28.2 | 27.3 | 24.8 | 82 | 83 | - |
| 24 | 1007.0 | 30.9 | 28.4 | 26.8 | 24.6 | 80 | 55 | - |
| 25 | 1005.3 | 30.5 | 28.6 | 27.2 | 24.5 | 79 | 64 | Trace |
| 26 | 1004.6 | 29.6 | 27.9 | 25.7 | 24.3 | 81 | 77 | 1.5 |
| 27 | 1003.2 | 31.0 | 28.7 | 26.6 | 23.8 | 75 | 68 | Trace |
| 28 | 1005.6 | 29.3 | 27.7 | 26.8 | 25.2 | 86 | 88 | 7.9 |
| 29 | 1008.9 | 27.7 | 25.8 | 23.8 | 25.0 | 96 | 91 | 94.3 |
| 30 | 1009.9 | 27.8 | 26.7 | 25.9 | 25.0 | 90 | 91 | 0.5 |
| 31 | 1008.8 | 30.5 | 28.2 | 26.6 | 24.8 | 82 | 54 | Trace |
| Mean/Total | 1006.7 | 30.5 | 28.4 | 26.6 | 24.9 | 82 | 76 | 386.7 |
| Normal | 1005.3 | 31.5 | 28.8 | 26.6 | 24.9 | 80 | 65 | 323.5 |
| Station | Hong Kong Observatory | |||||||
| Date JULY |
Total Bright Sunshine (hours) |
Daily Global Solar Radiation (MJ/m2) |
Total Evaporation (mm) |
Prevailing Wind Direction (degrees) |
Mean Wind Speed (km/h) |
|---|---|---|---|---|---|
| 1 | 8.7 | 16.04 | 6.0 | 270 | 17.6 |
| 2 | 7.2 | 19.18 | 6.4 | 290 | 34.3 |
| 3 | - | 3.11 | 1.0 | 250 | 39.6 |
| 4 | 3.4 | 9.72 | 3.3 | 240 | 23.6 |
| 5 | 6.7 | 16.75 | 5.1 | 230 | 28.7 |
| 6 | 0.1 | 10.61 | 4.1 | 220 | 37.3 |
| 7 | 6.8 | 15.66 | 6.9 | 230 | 31.3 |
| 8 | 5.0 | 18.06 | 5.4 | 230 | 24.0 |
| 9 | 9.7 | 21.79 | 6.0 | 230 | 19.8 |
| 10 | 7.0 | 14.77 | 5.0 | 200 | 19.6 |
| 11 | 5.6 | 12.30 | 4.5 | 210 | 28.5 |
| 12 | 3.7 | 13.14 | 3.9 | 230 | 27.6 |
| 13 | 5.6 | 15.50 | 3.8 | 240 | 12.4 |
| 14 | 10.7 | 21.75 | 6.0 | 230 | 7.0 |
| 15 | 11.3 | 23.80 | 6.1 | 310 | 10.4 |
| 16 | - | 2.77 | 1.3 | 030 | 45.2 |
| 17 | 1.1 | 8.95 | 0.7 | 160 | 17.2 |
| 18 | 11.5 | 24.54 | 5.9 | 040 | 10.9 |
| 19 | 3.0 | 10.26 | 2.9 | 160 | 23.5 |
| 20 | 2.6 | 12.24 | 5.6 | 140 | 25.6 |
| 21 | 0.2 | 5.92 | 2.3 | 100 | 28.5 |
| 22 | 9.8 | 23.04 | 6.0 | 080 | 29.1 |
| 23 | 6.2 | 18.57 | 4.9 | 070 | 21.8 |
| 24 | 11.7 | 24.39 | 6.1 | 090 | 15.0 |
| 25 | 11.1 | 21.04 | 5.5 | 080 | 26.8 |
| 26 | 7.1 | 16.51 | 4.5 | 080 | 29.3 |
| 27 | 4.2 | 12.88 | 3.1 | 320 | 15.5 |
| 28 | 1.3 | 7.59 | 1.6 | 150 | 13.9 |
| 29 | - | 3.49 | 0.1 | 110 | 18.2 |
| 30 | 0.2 | 7.35 | 2.3 | 090 | 21.8 |
| 31 | 10.7 | 24.40 | 5.8 | 070 | 13.4 |
| Mean/Total | 172.2 | 14.71 | 132.1 | 230 | 23.1 |
| Normal | 231.1 | 19.15 | 171.6 | 230 | 20.0 |
| Station | King's Park | Waglan Island^ | |||
The minimum pressure recorded at the Hong Kong Observatory was 995.0 hectopascals at 1609 HKT on 1 July.
The maximum air temperature recorded at the Hong Kong Observatory was 34.6 degrees C at 1607 HKT on 1 July.
The minimum air temperature recorded at the Hong Kong Observatory was 22.7 degrees C at 0540 HKT on 17 July.
The maximum gust peak speed recorded at Waglan Island was 106 kilometres per hour from 220 degrees at 1617 HKT on 16 July.
The maximum instantaneous rate of rainfall recorded at King's Park was 63 millimetres per hour at 1543 HKT on 16 July.
^ 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.