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Hainan Monthly Climate Averages
Hainan is located in subarctic climate zone that typically has substantial seasonal variance in temperatures short summer and prolonged and sometimes very cold winter.
To help you choose the best time to travel, you can find climate data below on the weather in Hainan .
Month | t°C day |
t°C night |
mm rain |
daylight |
January | +21 | +15.4 | 20 | 11.5h |
February | +22.3 | +16.4 | 35 | 11.9h |
March | +26 | +19.1 | 51 | 12.4h |
April | +29.7 | +22.4 | 100 | 13h |
May | +31.9 | +24.5 | 181 | 13.5h |
June | +32.9 | +25.5 | 227 | 13.7h |
July | +33.1 | +25.5 | 218 | 13.6h |
August | +32.3 | +25.3 | 236 | 13.2h |
September | +30.7 | +24.6 | 244 | 12.6h |
October | +28.4 | +22.9 | 224 | 12h |
November | +25.1 | +19.9 | 81 | 11.6h |
December | +22 | +16.7 | 35 | 11.3h |
High season with the best weather conditions for the beach leisure in Hainan are typically March, April, November.
Temperature in Hainan
The table shows that the hottest months in Hainan are July and June, during which the average daytime temperature reaches +33.1°C and the nighttime temperature falls to +25.5°C.
The coldest months are January and December, when the daily average temperature falls to +21°C, and drops to +15.4°C during the night.
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Sea temperature
The month with the highest average monthly temperature in the South China Sea on the beaches of Hainan is July with 29.6 degrees.
The coldest water can be found in February — 22.9degrees C.
Precipitation
The largest amount of precipitation falls on average in September and August, up to 244mm, and the least in January and December — up to 20mm.