Monthly Normals of Meteorological Elements for Hong Kong, September 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 | 1009.2 | hPa | |
| Mean Diurnal Range | 3.5 | hPa | ||
| AIR TEMPERATURE | Mean Daily Maximum | 30.2 | deg. C | |
| Mean | 27.6 | deg. C | ||
| Mean Daily Minimum | 25.6 | deg. C | ||
| RELATIVE HUMIDITY | Mean | 79 | % | |
| AMOUNT OF CLOUD | 65 | % | ||
| RAINFALL | Total | 287.5 | mm | |
| Duration | 68 | hours | ||
| Number of Days with |
0.1 mm or above |
14.80 | ||
| 25.0 mm or above |
3.47 | |||
| 50.0 mm or above |
1.60 | |||
| NUMBER OF DAYS WITH THUNDERSTORM | 4.30 | |||
| NUMBER OF DAYS WITH FOG (Visibility < 1000 m) |
0 | |||
| SOIL TEMPERATURE AT 0700 HOURS |
0.5 m | 29.6 | deg. C | |
| 1.0 m | 29.3 | deg. C | ||
| BRIGHT SUNSHINE AT KING'S PARK |
Duration | 171.8 | hours | |
| Percentage of Possible | 47 | % | ||
| WIND AT WAGLAN ISLAND |
Prevailing Direction | 090 | degrees | |
| Mean Speed | 22.8 | km/h | ||
| SEA SURFACE TEMPERATURE AT NORTH POINT AT 0700 HOURS * |
27.1 | deg. C | ||
Note : All measurements were made at the Hong Kong Observatory except
where specified.
* 1975 - 2004