EXTRACT OF METEOROLOGICAL OBSERVATIONS FOR HONG KONG, DECEMBER 1999
EXTRACT OF METEOROLOGICAL OBSERVATIONS FOR HONG KONG,
DECEMBER 1999
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 | 1019.7 | 23.6 | 20.5 | 17.8 | 11.8 | 57 | 51 | - |
2 | 1022.4 | 22.3 | 20.0 | 18.4 | 12.5 | 62 | 60 | - |
3 | 1023.7 | 19.9 | 18.2 | 16.2 | 13.1 | 73 | 90 | 8.7 |
4 | 1021.8 | 20.2 | 18.7 | 16.7 | 13.3 | 71 | 96 | 0.7 |
5 | 1020.6 | 21.0 | 18.7 | 17.5 | 12.8 | 68 | 85 | Trace |
6 | 1022.5 | 18.2 | 16.7 | 15.0 | 8.7 | 60 | 83 | Trace |
7 | 1024.0 | 19.0 | 16.8 | 15.0 | 6.0 | 49 | 49 | - |
8 | 1022.6 | 20.6 | 17.9 | 15.0 | 6.8 | 49 | 12 | - |
9 | 1020.2 | 21.7 | 18.7 | 16.0 | 7.9 | 50 | 12 | - |
10 | 1018.6 | 22.3 | 19.2 | 16.7 | 12.3 | 65 | 38 | - |
11 | 1019.6 | 23.2 | 20.1 | 17.8 | 11.2 | 58 | 45 | - |
12 | 1019.4 | 20.7 | 19.8 | 19.2 | 12.8 | 65 | 84 | Trace |
13 | 1018.3 | 22.3 | 20.3 | 19.2 | 15.3 | 74 | 74 | Trace |
14 | 1017.9 | 22.2 | 20.2 | 18.7 | 10.7 | 56 | 84 | - |
15 | 1017.7 | 22.0 | 19.6 | 17.6 | 11.2 | 59 | 83 | - |
16 | 1017.0 | 19.8 | 18.5 | 17.2 | 14.5 | 78 | 94 | 2.8 |
17 | 1017.0 | 17.5 | 16.9 | 15.9 | 14.8 | 88 | 99 | 10.8 |
18 | 1020.3 | 16.6 | 14.5 | 13.5 | 12.1 | 86 | 100 | 5.6 |
19 | 1022.4 | 16.1 | 14.2 | 12.3 | 9.2 | 73 | 89 | 4.3 |
20 | 1025.2 | 15.2 | 12.5 | 10.4 | 1.5 | 47 | 4 | - |
21 | 1028.4 | 13.4 | 10.6 | 8.3 | -4.2 | 36 | 0 | - |
22 | 1030.2 | 10.2 | 8.5 | 6.7 | -8.1 | 30 | 1 | - |
23 | 1028.0 | 12.0 | 9.2 | 5.8 | -7.2 | 31 | 1 | - |
24 | 1024.2 | 16.2 | 12.7 | 8.7 | -5.8 | 27 | 0 | - |
25 | 1022.3 | 16.6 | 13.7 | 10.6 | -0.3 | 40 | 0 | - |
26 | 1022.1 | 18.1 | 15.0 | 12.0 | 5.9 | 57 | 29 | - |
27 | 1022.5 | 17.8 | 16.4 | 15.3 | 10.0 | 66 | 87 | Trace |
28 | 1020.9 | 21.1 | 18.1 | 16.3 | 13.0 | 72 | 43 | - |
29 | 1018.0 | 20.1 | 17.8 | 16.2 | 13.8 | 78 | 64 | - |
30 | 1016.3 | 22.3 | 18.7 | 15.9 | 13.4 | 72 | 8 | - |
31 | 1017.1 | 21.1 | 18.9 | 17.3 | 11.3 | 63 | 1 | - |
Mean/Total | 1021.3 | 19.1 | 16.8 | 14.8 | 8.4 | 60 | 51 | 32.9 |
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 | 8.9 | 14.21 | 3.5 | 010 | 20.9 |
2 | 8.4 | 14.57 | 3.6 | 040 | 32.5 |
3 | - | 4.73 | 1.3 | 040 | 33.8 |
4 | 0.1 | 3.67 | 1.4 | 010 | 31.0 |
5 | 2.2 | 9.73 | 3.5 | 360 | 36.0 |
6 | - | 4.83 | 3.1 | 010 | 36.9 |
7 | 6.0 | 12.38 | 3.3 | 010 | 26.0 |
8 | 9.3 | 14.61 | 3.6 | 010 | 23.0 |
9 | 9.7 | 15.16 | 3.7 | 010 | 24.3 |
10 | 6.7 | 12.64 | 2.8 | 030 | 16.8 |
11 | 6.6 | 13.61 | 3.5 | 020 | 23.8 |
12 | - | 4.13 | 2.6 | 070 | 33.6 |
13 | 1.5 | 9.61 | 2.7 | 070 | 25.3 |
14 | 3.9 | 9.51 | 3.5 | 010 | 25.5 |
15 | 6.1 | 11.74 | 3.9 | 070 | 27.1 |
16 | - | 2.12 | 0.6 | 010 | 28.3 |
17 | - | 2.48 | 0.5 | 010 | 28.1 |
18 | - | 2.35 | 0.1 | 010 | 30.1 |
19 | 0.6 | 8.55 | 3.4 | 010 | 37.5 |
20 | 9.7 | 15.04 | 3.7 | 010 | 39.6 |
21 | 9.8 | 15.63 | 4.3 | 010 | 40.7 |
22 | 9.7 | 15.52 | 3.8 | 010 | 48.3 |
23 | 10.1 | 15.74 | 3.3 | 010 | 27.7 |
24 | 9.9 | 16.30 | 4.3 | 010 | 34.6 |
25 | 9.7 | 15.71 | 2.4 | 010 | 16.6 |
26 | 8.0 | 14.38 | 3.2 | 070 | 25.5 |
27 | 0.1 | 4.86 | 1.2 | 060 | 32.6 |
28 | 7.2 | 12.73 | 2.2 | 040 | 15.9 |
29 | 1.7 | 8.22 | 1.3 | 040 | 13.1 |
30 | 9.6 | 14.66 | 2.7 | 030 | 12.7 |
31 | 9.9 | 15.27 | 3.3 | 040 | 19.1 |
Mean/Total | 165.4 | 10.80 | 86.3 | 010 | 28.0 |
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 1013.8 hectopascals at 1437 HKT on 30 December.
The maximum air temperature recorded at the Hong Kong Observatory was 23.6 degrees C at 1536 HKT on 1 December.
The minimum air temperature recorded at the Hong Kong Observatory was 5.8 degrees C at 0551 HKT on 23 December.
The maximum gust peak speed recorded at Waglan Island was 83 kilometres per hour from 010 degrees at 0415 HKT on 22 December.
The maximum instantaneous rate of rainfall recorded at King's Park was 56 millimetres per hour at 1612 HKT on 3 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.