Daily Normals of Meteorological Elements for Hong Kong, May 1971-2000
in the 30 years from 1971 to 2000 for the 5-day period centred on the day specified.
| Date | Mean Pressure (hPa) Figure |
Air Temperature Figure |
Wet Bulb (deg. C) Figure |
Dew Point (deg. C) Figure |
Relative Humidity (%) Figure |
Mean Daily Rainfall (mm) Figure |
Amount of Cloud (%) Figure |
||
|---|---|---|---|---|---|---|---|---|---|
| Mean Maximum (deg. C) |
Mean (deg. C) |
Mean Minimum (deg. C) |
|||||||
| 1 May | 1010.5 | 27.5 | 24.8 | 22.8 | 23.0 | 22.1 | 86 | 11.9 | 80 |
| 2 May | 1010.5 | 27.4 | 24.7 | 22.8 | 23.0 | 22.1 | 86 | 11.8 | 80 |
| 3 May | 1010.5 | 27.3 | 24.6 | 22.7 | 22.8 | 21.9 | 86 | 11.2 | 80 |
| 4 May | 1010.7 | 27.2 | 24.5 | 22.6 | 22.6 | 21.6 | 85 | 12.1 | 79 |
| 5 May | 1010.8 | 27.2 | 24.5 | 22.5 | 22.5 | 21.5 | 84 | 10.1 | 77 |
| 6 May | 1010.9 | 27.4 | 24.6 | 22.7 | 22.6 | 21.5 | 83 | 11.1 | 76 |
| 7 May | 1010.8 | 27.6 | 24.9 | 22.9 | 22.8 | 21.7 | 83 | 10.7 | 75 |
| 8 May | 1010.8 | 27.8 | 25.1 | 23.2 | 23.0 | 21.9 | 83 | 11.3 | 75 |
| 9 May | 1010.7 | 27.8 | 25.2 | 23.4 | 23.2 | 22.1 | 84 | 13.0 | 77 |
| 10 May | 1010.6 | 27.9 | 25.4 | 23.6 | 23.4 | 22.4 | 84 | 11.9 | 78 |
| 11 May | 1010.4 | 28.1 | 25.6 | 23.8 | 23.5 | 22.6 | 84 | 9.6 | 77 |
| 12 May | 1010.2 | 28.3 | 25.7 | 24.0 | 23.7 | 22.7 | 84 | 9.0 | 77 |
| 13 May | 1010.0 | 28.5 | 25.8 | 24.0 | 23.7 | 22.8 | 84 | 9.0 | 76 |
| 14 May | 1009.8 | 28.6 | 26.0 | 24.1 | 23.8 | 22.7 | 83 | 6.3 | 74 |
| 15 May | 1009.7 | 28.6 | 26.0 | 24.1 | 23.7 | 22.7 | 83 | 7.5 | 74 |
| 16 May | 1009.5 | 28.5 | 25.9 | 24.0 | 23.7 | 22.6 | 83 | 7.5 | 75 |
| 17 May | 1009.3 | 28.6 | 25.9 | 24.0 | 23.6 | 22.6 | 82 | 8.9 | 73 |
| 18 May | 1009.1 | 28.6 | 26.0 | 24.1 | 23.7 | 22.6 | 82 | 11.3 | 73 |
| 19 May | 1008.9 | 28.6 | 26.1 | 24.2 | 23.8 | 22.7 | 82 | 12.5 | 73 |
| 20 May | 1008.7 | 28.6 | 26.1 | 24.2 | 23.8 | 22.7 | 83 | 12.2 | 73 |
| 21 May | 1008.6 | 28.5 | 26.1 | 24.3 | 23.8 | 22.8 | 83 | 11.8 | 74 |
| 22 May | 1008.5 | 28.5 | 26.0 | 24.3 | 23.8 | 22.8 | 83 | 11.7 | 76 |
| 23 May | 1008.5 | 28.5 | 26.1 | 24.3 | 23.9 | 22.9 | 83 | 8.4 | 76 |
| 24 May | 1008.4 | 28.6 | 26.1 | 24.4 | 24.0 | 23.0 | 83 | 7.5 | 77 |
| 25 May | 1008.2 | 28.8 | 26.3 | 24.6 | 24.2 | 23.2 | 83 | 7.3 | 77 |
| 26 May | 1008.1 | 29.0 | 26.5 | 24.7 | 24.3 | 23.3 | 83 | 9.4 | 77 |
| 27 May | 1007.8 | 29.1 | 26.6 | 24.8 | 24.5 | 23.5 | 83 | 10.1 | 77 |
| 28 May | 1007.5 | 29.2 | 26.8 | 24.9 | 24.7 | 23.7 | 84 | 11.5 | 78 |
| 29 May | 1007.3 | 29.4 | 26.9 | 25.1 | 24.8 | 23.9 | 84 | 13.6 | 78 |
| 30 May | 1007.1 | 29.5 | 27.0 | 25.2 | 24.9 | 24.0 | 84 | 13.9 | 79 |
| 31 May | 1007.0 | 29.6 | 27.2 | 25.3 | 25.0 | 24.1 | 84 | 12.8 | 78 |
| Observed at | Hong Kong Observatory | ||||||||
| Date | Bright Sunshine Duration (hours) Figure |
Wind Figure |
Sea Temperature Figure |
||
|---|---|---|---|---|---|
| Prevailing Direction (degrees) |
Mean Speed (km/h) |
AM (deg. C) |
PM (deg. C) |
||
| 1 May | 3.7 | 080 | 20.0 | 23.0 | 23.4 |
| 2 May | 3.6 | 080 | 20.0 | 23.1 | 23.5 |
| 3 May | 3.7 | 080 | 21.0 | 23.2 | 23.6 |
| 4 May | 3.9 | 080 | 21.0 | 23.2 | 23.6 |
| 5 May | 4.1 | 080 | 19.0 | 23.3 | 23.7 |
| 6 May | 4.5 | 080 | 19.0 | 23.4 | 23.9 |
| 7 May | 4.7 | 090 | 18.0 | 23.6 | 24.0 |
| 8 May | 4.6 | 090 | 18.0 | 23.8 | 24.2 |
| 9 May | 4.4 | 090 | 19.0 | 23.9 | 24.3 |
| 10 May | 4.3 | 090 | 19.0 | 24.0 | 24.5 |
| 11 May | 4.5 | 090 | 19.0 | 24.1 | 24.6 |
| 12 May | 4.6 | 090 | 19.0 | 24.3 | 24.7 |
| 13 May | 4.8 | 090 | 19.0 | 24.5 | 24.8 |
| 14 May | 5.0 | 090 | 20.0 | 24.6 | 25.0 |
| 15 May | 5.0 | 090 | 21.0 | 24.7 | 25.0 |
| 16 May | 4.9 | 090 | 22.0 | 24.7 | 25.2 |
| 17 May | 5.0 | 080 | 23.0 | 24.8 | 25.2 |
| 18 May | 5.1 | 080 | 23.0 | 24.8 | 25.3 |
| 19 May | 4.9 | 080 | 23.0 | 24.9 | 25.3 |
| 20 May | 4.8 | 080 | 23.0 | 25.0 | 25.4 |
| 21 May | 4.6 | 080 | 22.0 | 25.1 | 25.4 |
| 22 May | 4.2 | 080 | 22.0 | 25.1 | 25.5 |
| 23 May | 4.1 | 080 | 21.0 | 25.2 | 25.6 |
| 24 May | 4.1 | 080 | 20.0 | 25.3 | 25.7 |
| 25 May | 4.1 | 080 | 20.0 | 25.4 | 25.8 |
| 26 May | 4.3 | 090 | 19.0 | 25.5 | 25.9 |
| 27 May | 4.5 | 090 | 19.0 | 25.6 | 26.0 |
| 28 May | 4.3 | 090 | 19.0 | 25.7 | 26.1 |
| 29 May | 4.6 | 090 | 20.0 | 25.7 | 26.2 |
| 30 May | 4.6 | 090 | 20.0 | 25.7 | 26.3 |
| 31 May | 4.6 | 090 | 21.0 | 25.8 | 26.3 |
| Observed at | King's Park |
Waglan Island | North Point | ||
Figure 1. Daily Normals mean pressure at May (1971-2000)
Figure 2. Daily Normals air temperature at May (1971-2000)
Figure 3. Daily Normals wet-bulb temperature and dew point temperature at May (1971-2000)
Figure 4. Daily Normals relative humdity at May (1971-2000)
Figure 5. Daily Normals mean daily rainfall at May (1971-2000)
Figure 6. Daily Normals mean daily Bright Sunshine Duration at May (1971-2000)
Figure 7. Daily Normals mean wind at May (1971-2000)
Figure 8. Daily Normals mean sea temperature at May (1975-2004)