EXTRACT OF METEOROLOGICAL OBSERVATIONS FOR HONG KONG, JULY 1997
EXTRACT OF METEOROLOGICAL OBSERVATIONS FOR HONG KONG,
JULY 1997
| 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 | 1004.7 | 29.1 | 26.5 | 24.7 | 25.3 | 94 | 96 | 122.6 |
| 2 | 1005.4 | 28.7 | 26.8 | 25.1 | 25.4 | 93 | 100 | 115.5 |
| 3 | 1006.5 | 27.2 | 25.2 | 22.6 | 24.2 | 94 | 99 | 83.3 |
| 4 | 1006.4 | 29.0 | 27.2 | 22.7 | 25.1 | 89 | 97 | 23.4 |
| 5 | 1006.6 | 29.5 | 28.7 | 27.8 | 25.3 | 82 | 90 | Trace |
| 6 | 1005.3 | 29.8 | 27.0 | 24.9 | 24.7 | 87 | 93 | 15.1 |
| 7 | 1004.6 | 30.3 | 28.8 | 26.2 | 25.5 | 83 | 89 | Trace |
| 8 | 1004.3 | 29.5 | 28.6 | 25.3 | 25.4 | 83 | 92 | 13.3 |
| 9 | 1003.9 | 30.0 | 28.9 | 27.3 | 25.3 | 81 | 92 | 3.4 |
| 10 | 1005.4 | 29.8 | 27.6 | 25.5 | 24.9 | 86 | 92 | 52.7 |
| 11 | 1007.5 | 30.1 | 28.5 | 25.6 | 25.2 | 82 | 86 | 10.1 |
| 12 | 1008.4 | 32.4 | 29.4 | 26.9 | 25.5 | 80 | 76 | 1.0 |
| 13 | 1008.8 | 31.2 | 29.3 | 28.0 | 25.9 | 82 | 78 | Trace |
| 14 | 1008.5 | 31.7 | 28.5 | 26.5 | 25.6 | 84 | 83 | 9.4 |
| 15 | 1006.6 | 29.7 | 27.2 | 25.2 | 25.6 | 91 | 86 | 97.3 |
| 16 | 1004.8 | 28.8 | 27.0 | 25.6 | 25.3 | 91 | 83 | 23.6 |
| 17 | 1005.8 | 27.7 | 26.5 | 25.3 | 24.8 | 90 | 93 | 81.9 |
| 18 | 1008.8 | 27.8 | 26.8 | 24.7 | 24.8 | 89 | 90 | 26.4 |
| 19 | 1009.0 | 27.4 | 25.7 | 25.0 | 25.0 | 96 | 95 | 63.2 |
| 20 | 1008.5 | 29.5 | 26.8 | 25.1 | 24.9 | 89 | 88 | 0.3 |
| 21 | 1008.7 | 31.0 | 28.3 | 26.3 | 25.5 | 85 | 70 | Trace |
| 22 | 1009.0 | 31.7 | 28.8 | 27.0 | 24.7 | 79 | 51 | - |
| 23 | 1008.1 | 31.8 | 28.5 | 26.2 | 23.7 | 76 | 60 | - |
| 24 | 1007.5 | 30.9 | 28.5 | 26.5 | 23.9 | 77 | 73 | Trace |
| 25 | 1007.1 | 29.8 | 28.4 | 27.0 | 24.6 | 80 | 79 | Trace |
| 26 | 1007.0 | 31.9 | 29.2 | 27.1 | 25.0 | 79 | 46 | - |
| 27 | 1007.1 | 32.4 | 29.5 | 27.3 | 24.8 | 76 | 26 | - |
| 28 | 1007.5 | 33.0 | 29.8 | 27.9 | 24.3 | 73 | 27 | - |
| 29 | 1006.5 | 31.8 | 29.5 | 28.3 | 25.3 | 78 | 57 | Trace |
| 30 | 1004.7 | 33.2 | 30.2 | 28.1 | 25.4 | 76 | 59 | - |
| 31 | 1002.1 | 31.2 | 29.6 | 27.6 | 25.6 | 80 | 84 | 3.5 |
| Mean/Total | 1006.6 | 30.3 | 28.1 | 26.1 | 25.0 | 84 | 78 | 746.0 |
| 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 | - | 3.54 | 3.0 | 140 | 19.0 |
| 2 | - | 1.40 | 3.5 | 240 | 28.5 |
| 3 | - | 3.82 | 4.1 | 090 | 15.6 |
| 4 | - | 3.20 | 1.0 | 180 | 29.7 |
| 5 | 0.1 | 4.81 | 1.6 | 200 | 27.3 |
| 6 | 0.4 | 4.89 | 2.5 | 190 | 21.1 |
| 7 | 0.8 | 9.61 | 2.7 | 200 | 25.0 |
| 8 | 0.1 | 5.35 | 1.8 | 210 | 33.8 |
| 9 | 0.3 | 6.75 | 3.8 | 200 | 30.8 |
| 10 | 1.0 | 7.00 | 2.4 | 190 | 25.4 |
| 11 | 3.0 | 11.63 | 2.7 | 170 | 16.8 |
| 12 | 8.1 | 21.76 | 5.1 | 180 | 15.4 |
| 13 | 8.4 | 21.25 | 5.1 | 110 | 25.6 |
| 14 | 5.1 | 14.54 | 3.4 | 120 | 30.0 |
| 15 | 4.9 | 17.35 | 2.0 | 110 | 26.6 |
| 16 | 3.3 | 10.00 | 2.3 | 110 | 31.0 |
| 17 | - | 5.81 | 1.3 | 180 | 32.3 |
| 18 | - | 4.51 | 2.5 | 130 | 20.5 |
| 19 | - | 2.00 | 1.5 | 130 | 18.7 |
| 20 | 2.5 | 15.76 | 3.4 | 070 | 20.8 |
| 21 | 10.4 | 23.08 | 5.1 | 080 | 22.2 |
| 22 | 11.2 | 23.30 | 5.3 | 090 | 10.8 |
| 23 | 7.7 | 20.35 | 5.1 | 360 | 7.2 |
| 24 | 3.8 | 14.47 | 4.2 | 220 | 6.1 |
| 25 | 1.6 | 8.32 | 1.5 | 270 | 5.6 |
| 26 | 7.1 | 18.68 | 4.6 | 240 | 13.2 |
| 27 | 10.9 | 22.73 | 5.6 | 230 | 14.1 |
| 28 | 9.9 | 20.37 | 5.1 | 200 | 7.4 |
| 29 | 5.4 | 12.36 | 3.2 | 120 | 9.6 |
| 30 | 11.8 | 25.27 | 5.4 | 090 | 17.5 |
| 31 | 7.3 | 17.82 | 5.2 | 080 | 41.9 |
| Mean/Total | 125.1 | 12.31 | 106.0 | 190 | 21.0 |
| 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 999.8 hectopascals at 1735 HKT on 31 July.
The maximum air temperature recorded at the Hong Kong Observatory was 33.2 degrees C at 1544 HKT on 30 July.
The minimum air temperature recorded at the Hong Kong Observatory was 22.6 degrees C at 2355 HKT on 3 July.
The maximum gust peak speed recorded at Waglan Island was 101 kilometres per hour from 270 degrees at 2346 HKT on 3 July.
The maximum instantaneous rate of rainfall recorded at King's Park was 194 millimetres per hour at 0635 HKT on 1 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.