Monthly Normals of Meteorological Elements for Hong Kong, April 1971-2000
Climatological Information Services > Climatological Normals and Extremes
> 1971-2000 Normals for Hong Kong (Grouped by month)
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| Meteorological Elements | ||||
|---|---|---|---|---|
| ATMOSPHERIC PRESSURE | Mean | 1012.8 | hPa | |
| Mean Diurnal Range | 3.9 | hPa | ||
| AIR TEMPERATURE | Mean Daily Maximum | 25.1 | deg. C | |
| Mean | 22.5 | deg. C | ||
| Mean Daily Minimum | 20.6 | deg. C | ||
| RELATIVE HUMIDITY | Mean | 83 | % | |
| AMOUNT OF CLOUD | 80 | % | ||
| RAINFALL | Total | 188.5 | mm | |
| Duration | 87 | hours | ||
| Number of Days with |
0.1 mm or above |
11.67 | ||
| 25.0 mm or above |
2.57 | |||
| 50.0 mm or above |
1.23 | |||
| NUMBER OF DAYS WITH THUNDERSTORM | 4.20 | |||
| NUMBER OF DAYS WITH FOG (Visibility < 1000 m) |
1.13 | |||
| SOIL TEMPERATURE AT 0700 HOURS |
0.5 m | 23.4 | deg. C | |
| 1.0 m | 22.8 | deg. C | ||
| BRIGHT SUNSHINE AT KING'S PARK |
Duration | 101.8 | hours | |
| Percentage of Possible | 27 | % | ||
| WIND AT WAGLAN ISLAND |
Prevailing Direction | 070 | degrees | |
| Mean Speed | 21.2 | km/h | ||
| SEA SURFACE TEMPERATURE AT NORTH POINT AT 0700 HOURS * |
20.9 | deg. C | ||
Note : All measurements were made at the Hong Kong Observatory except
where specified.
* 1975 - 2004