EXTRACT OF METEOROLOGICAL OBSERVATIONS FOR HONG KONG, DECEMBER 1997
EXTRACT OF METEOROLOGICAL OBSERVATIONS FOR HONG KONG,
DECEMBER 1997
| 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 | 1020.3 | 25.2 | 22.2 | 17.8 | 17.3 | 74 | 63 | Trace |
| 2 | 1024.5 | 17.9 | 16.4 | 15.3 | 9.7 | 65 | 89 | - |
| 3 | 1024.9 | 17.9 | 16.4 | 15.3 | 10.7 | 69 | 90 | Trace |
| 4 | 1023.3 | 21.1 | 18.4 | 15.5 | 13.6 | 74 | 69 | Trace |
| 5 | 1021.1 | 22.0 | 21.0 | 19.8 | 17.5 | 80 | 90 | Trace |
| 6 | 1017.6 | 24.9 | 22.9 | 21.7 | 19.9 | 83 | 89 | Trace |
| 7 | 1015.5 | 24.0 | 21.6 | 17.2 | 17.2 | 77 | 84 | Trace |
| 8 | 1021.6 | 18.4 | 15.9 | 13.2 | 6.7 | 55 | 61 | - |
| 9 | 1024.5 | 17.3 | 14.6 | 12.4 | 5.5 | 55 | 45 | - |
| 10 | 1024.5 | 17.0 | 14.8 | 12.7 | 6.4 | 57 | 59 | - |
| 11 | 1023.9 | 16.8 | 14.9 | 13.4 | 5.9 | 55 | 79 | - |
| 12 | 1023.3 | 16.3 | 15.3 | 14.0 | 8.9 | 66 | 77 | - |
| 13 | 1022.9 | 17.3 | 15.5 | 13.8 | 8.9 | 65 | 66 | - |
| 14 | 1021.7 | 19.9 | 17.9 | 15.7 | 14.4 | 80 | 51 | - |
| 15 | 1021.2 | 21.8 | 19.4 | 17.0 | 15.2 | 77 | 7 | - |
| 16 | 1019.6 | 22.5 | 20.4 | 18.4 | 16.9 | 81 | 20 | - |
| 17 | 1017.4 | 24.8 | 21.8 | 19.0 | 17.2 | 76 | 15 | - |
| 18 | 1016.7 | 22.6 | 21.3 | 20.5 | 17.7 | 80 | 51 | - |
| 19 | 1015.9 | 23.6 | 21.5 | 20.3 | 18.7 | 84 | 51 | - |
| 20 | 1015.8 | 24.6 | 22.2 | 20.3 | 19.2 | 84 | 46 | - |
| 21 | 1016.2 | 22.2 | 21.0 | 20.6 | 19.7 | 92 | 99 | 0.7 |
| 22 | 1018.6 | 20.7 | 18.9 | 16.7 | 16.9 | 88 | 99 | 4.0 |
| 23 | 1020.4 | 18.9 | 16.2 | 14.6 | 11.5 | 74 | 83 | 1.8 |
| 24 | 1020.0 | 17.7 | 16.0 | 13.7 | 11.4 | 74 | 84 | - |
| 25 | 1020.1 | 20.1 | 18.6 | 17.2 | 14.7 | 78 | 66 | - |
| 26 | 1020.9 | 20.8 | 19.4 | 18.4 | 15.5 | 79 | 86 | Trace |
| 27 | 1021.7 | 21.0 | 19.6 | 18.5 | 15.9 | 79 | 77 | - |
| 28 | 1021.2 | 21.2 | 19.7 | 19.0 | 16.4 | 82 | 60 | - |
| 29 | 1018.8 | 22.6 | 20.4 | 18.5 | 16.8 | 80 | 46 | - |
| 30 | 1017.9 | 24.9 | 21.6 | 19.3 | 17.9 | 80 | 19 | - |
| 31 | 1018.3 | 21.4 | 20.3 | 19.7 | 17.4 | 83 | 71 | - |
| Mean/Total | 1020.3 | 20.9 | 18.9 | 17.1 | 14.3 | 75 | 64 | 6.5 |
| 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 | 6.0 | 12.64 | 4.6 | 070 | 29.7 |
| 2 | 0.4 | 6.28 | 2.7 | 010 | 41.8 |
| 3 | - | 5.21 | 1.9 | 020 | 30.8 |
| 4 | 4.0 | 10.16 | 1.9 | 070 | 31.8 |
| 5 | - | 3.19 | 1.7 | 060 | 35.9 |
| 6 | 1.2 | 7.80 | 1.0 | 060 | 25.3 |
| 7 | 2.3 | 7.94 | 4.2 | 010 | 29.0 |
| 8 | 3.1 | 8.79 | 3.3 | 360 | 50.4 |
| 9 | 8.2 | 13.64 | 3.6 | 350 | 29.0 |
| 10 | 5.0 | 11.76 | 2.8 | 360 | 29.6 |
| 11 | 0.7 | 7.72 | 2.2 | 360 | 22.6 |
| 12 | - | 4.06 | 1.6 | 360 | 23.1 |
| 13 | 1.3 | 6.47 | 2.7 | 350 | 14.6 |
| 14 | 0.6 | 9.31 | 1.6 | 060 | 24.5 |
| 15 | 9.3 | 15.94 | 2.3 | 060 | 21.3 |
| 16 | 8.8 | 13.85 | 1.8 | 050 | 17.5 |
| 17 | 8.1 | 11.44 | 3.3 | 330 | 6.3 |
| 18 | 4.3 | 9.03 | 1.2 | 060 | 23.1 |
| 19 | 4.9 | 9.48 | 1.8 | 050 | 18.2 |
| 20 | 4.3 | 10.73 | 1.5 | 050 | 14.4 |
| 21 | - | 1.76 | 3.4 | 070 | 37.8 |
| 22 | - | 1.94 | 1.6 | 350 | 33.8 |
| 23 | 1.5 | 9.23 | 2.4 | 350 | 26.9 |
| 24 | - | 5.29 | 0.9 | 360 | 22.8 |
| 25 | 6.8 | 13.04 | 2.3 | 060 | 37.8 |
| 26 | 0.9 | 5.14 | 1.6 | 040 | 27.5 |
| 27 | 1.8 | 7.53 | 1.9 | 050 | 29.8 |
| 28 | 4.2 | 10.42 | 1.8 | 050 | 30.5 |
| 29 | 2.1 | 8.35 | 1.3 | 030 | 16.8 |
| 30 | 7.7 | 11.44 | 2.3 | 330 | 7.8 |
| 31 | 2.9 | 8.25 | 1.7 | 050 | 33.3 |
| Mean/Total | 100.4 | 8.64 | 68.9 | 050 | 26.6 |
| 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 1013.1 hectopascals at 0414 HKT on 7 December.
The maximum air temperature recorded at the Hong Kong Observatory was 25.2 degrees C at 1320 HKT on 1 December.
The minimum air temperature recorded at the Hong Kong Observatory was 12.4 degrees C at 0854 HKT on 9 December.
The maximum gust peak speed recorded at Waglan Island was 96 kilometres per hour from 350 degrees at 0437 HKT on 8 December.
The maximum instantaneous rate of rainfall recorded at King's Park was 24 millimetres per hour at 0153 HKT on 23 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.