EXTRACT OF METEOROLOGICAL OBSERVATIONS FOR HONG KONG, DECEMBER 1998
EXTRACT OF METEOROLOGICAL OBSERVATIONS FOR HONG KONG,
DECEMBER 1998
| Date DECEMBER |
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 | 1013.4 | 25.3 | 23.5 | 22.5 | 22.4 | 94 | 88 | 0.5 |
| 2 | 1015.2 | 25.4 | 23.6 | 22.1 | 21.4 | 88 | 63 | Trace |
| 3 | 1020.7 | 22.8 | 19.0 | 16.5 | 15.3 | 80 | 95 | 0.3 |
| 4 | 1020.7 | 19.1 | 17.3 | 15.7 | 13.0 | 76 | 80 | - |
| 5 | 1021.5 | 21.3 | 19.1 | 16.7 | 14.3 | 74 | 66 | - |
| 6 | 1021.8 | 21.3 | 19.3 | 17.4 | 14.4 | 73 | 87 | Trace |
| 7 | 1022.3 | 20.4 | 18.0 | 16.3 | 12.5 | 70 | 58 | Trace |
| 8 | 1023.1 | 19.8 | 17.6 | 15.6 | 9.7 | 60 | 46 | - |
| 9 | 1025.1 | 18.8 | 16.7 | 14.1 | 8.2 | 57 | 53 | - |
| 10 | 1025.0 | 19.6 | 17.3 | 15.2 | 8.0 | 54 | 77 | - |
| 11 | 1024.8 | 19.0 | 16.8 | 14.6 | 5.6 | 48 | 51 | - |
| 12 | 1023.5 | 19.3 | 16.7 | 14.3 | 6.5 | 51 | 65 | - |
| 13 | 1021.4 | 19.0 | 17.8 | 16.4 | 8.9 | 56 | 88 | Trace |
| 14 | 1022.8 | 18.5 | 15.6 | 13.8 | 9.8 | 69 | 95 | 2.4 |
| 15 | 1021.6 | 17.7 | 17.0 | 16.2 | 3.9 | 42 | 96 | Trace |
| 16 | 1020.0 | 21.0 | 18.3 | 16.0 | 6.2 | 45 | 89 | Trace |
| 17 | 1018.4 | 21.7 | 19.2 | 17.2 | 11.0 | 60 | 55 | - |
| 18 | 1015.7 | 23.2 | 20.6 | 19.0 | 14.7 | 70 | 86 | 1.5 |
| 19 | 1013.3 | 20.7 | 19.2 | 18.1 | 18.1 | 93 | 95 | 8.4 |
| 20 | 1011.1 | 21.4 | 20.6 | 19.6 | 16.8 | 79 | 99 | 0.6 |
| 21 | 1011.5 | 24.3 | 21.4 | 20.0 | 17.6 | 80 | 75 | - |
| 22 | 1012.6 | 25.7 | 22.0 | 19.9 | 17.9 | 78 | 26 | - |
| 23 | 1015.3 | 23.9 | 21.5 | 19.3 | 13.9 | 63 | 10 | - |
| 24 | 1019.4 | 22.2 | 20.2 | 19.2 | 16.0 | 77 | 56 | - |
| 25 | 1020.4 | 21.0 | 19.0 | 17.3 | 14.8 | 77 | 31 | Trace |
| 26 | 1020.0 | 20.4 | 18.9 | 17.9 | 14.2 | 75 | 37 | - |
| 27 | 1021.2 | 21.6 | 19.0 | 17.1 | 14.9 | 78 | 12 | - |
| 28 | 1023.2 | 21.5 | 19.2 | 17.6 | 14.5 | 75 | 23 | - |
| 29 | 1022.2 | 21.3 | 19.3 | 17.6 | 14.8 | 76 | 9 | - |
| 30 | 1020.4 | 20.5 | 19.0 | 17.7 | 13.1 | 69 | 32 | - |
| 31 | 1020.5 | 22.6 | 19.9 | 18.2 | 15.2 | 75 | 35 | - |
| Mean/Total | 1019.6 | 21.3 | 19.1 | 17.4 | 13.2 | 70 | 61 | 13.7 |
| Normal | 1020.2 | 20.5 | 17.6 | 15.4 | 11.2 | 68 | 49 | 27.3 |
| Station | Hong Kong Observatory | |||||||
| Date DECEMBER |
Total Bright Sunshine (hours) |
Daily Global Solar Radiation (MJ/m2) |
Total Evaporation (mm) |
Prevailing Wind Direction (degrees) |
Mean Wind Speed (km/h) |
|---|---|---|---|---|---|
| 1 | 3.0 | 8.60 | 1.5 | 060 | 15.1 |
| 2 | 7.6 | 13.22 | 2.6 | 060 | 18.3 |
| 3 | 0.7 | 4.27 | 2.6 | 360 | 37.7 |
| 4 | 1.5 | 7.26 | 1.9 | 010 | 21.1 |
| 5 | 6.3 | 11.76 | 2.3 | 010 | 24.9 |
| 6 | 0.6 | 7.70 | 2.5 | 010 | 24.0 |
| 7 | 8.0 | 14.12 | 3.9 | 360 | 32.8 |
| 8 | 8.5 | 14.40 | 3.7 | 010 | 27.8 |
| 9 | 8.1 | 13.89 | 3.2 | 060 | 30.8 |
| 10 | 5.1 | 12.32 | 3.5 | 010 | 33.5 |
| 11 | 8.1 | 13.74 | 3.9 | 010 | 38.8 |
| 12 | 5.4 | 12.81 | 3.3 | 360 | 33.2 |
| 13 | - | 5.27 | 2.1 | 360 | 29.5 |
| 14 | 0.1 | 1.82 | 1.9 | 360 | 45.5 |
| 15 | - | 2.91 | 2.5 | 360 | 32.8 |
| 16 | 0.6 | 8.44 | 3.2 | 010 | 21.3 |
| 17 | 6.9 | 12.93 | 2.9 | 080 | 24.2 |
| 18 | 0.1 | 6.10 | 1.7 | 070 | 19.2 |
| 19 | 0.1 | 2.52 | 0.3 | 010 | 20.8 |
| 20 | - | 3.61 | 1.4 | 010 | 23.7 |
| 21 | 5.3 | 11.73 | 2.6 | 030 | 17.4 |
| 22 | 8.1 | 13.01 | 3.1 | 010 | 12.4 |
| 23 | 8.6 | 13.48 | 3.5 | 360 | 23.9 |
| 24 | 4.4 | 10.58 | 2.3 | 070 | 24.7 |
| 25 | 8.2 | 13.25 | 2.5 | 080 | 21.8 |
| 26 | 8.1 | 12.96 | 2.6 | 070 | 25.1 |
| 27 | 8.3 | 12.47 | 2.5 | 060 | 24.3 |
| 28 | 8.1 | 12.76 | 2.4 | 070 | 32.5 |
| 29 | 7.9 | 12.22 | 2.5 | 060 | 32.2 |
| 30 | 8.2 | 13.68 | 2.7 | 070 | 39.0 |
| 31 | 7.9 | 12.64 | 2.7 | 070 | 27.4 |
| Mean/Total | 153.8 | 10.21 | 80.3 | 010 | 26.9 |
| Normal | 181.5 | 12.03 | 111.5 | 080 | 25.5 |
| Station | King's Park | Waglan Island^ | |||
The minimum pressure recorded at the Hong Kong Observatory was 1009.8 hectopascals at 1429 HKT on 20 December.
The maximum air temperature recorded at the Hong Kong Observatory was 25.7 degrees C at 1314 HKT on 22 December.
The minimum air temperature recorded at the Hong Kong Observatory was 13.8 degrees C at 1325 HKT on 14 December.
The maximum gust peak speed recorded at Waglan Island was 77 kilometres per hour from 360 degrees at 1258 HKT on 14 December.
The maximum instantaneous rate of rainfall recorded at King's Park was 4 millimetres per hour at 1224 HKT on 14 December.
^ 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.