Average annual temperature is 15.9 °C
Absolute maximum temperature: 37.9 °C
Absolute minimum temperature: -9.3 °C
Number of sunny days: 241 days
Number of rainy days: 121 days
Number of snow days: 3 days
Look at detailed online map of Hainan
* Weather data for Hainan China is based on climate observations for 2026 year
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Absolute maximum temperature (°C) | 14.2 | 17.5 | 29.0 | 29.6 | 34.2 | 37.9 | 37.0 | 35.5 | 32.0 | 27.9 | 29.1 | 21.4 |
| Average daytime temperature (°C) | 7.4 | 10.1 | 19.6 | 21.1 | 26.0 | 31.7 | 32.8 | 32.0 | 28.0 | 24.2 | 14.4 | 6.6 |
| Average temperature (°C) | 1.4 | 4.6 | 12.7 | 15.7 | 21.1 | 26.3 | 28.2 | 27.5 | 23.4 | 18.3 | 9.0 | 1.4 |
| Average night temperature (°C) | -3.8 | -0.8 | 6.2 | 10.9 | 16.8 | 21.0 | 24.6 | 23.3 | 19.2 | 13.5 | 4.0 | -3.1 |
| Absolute minimum temperature (°C) | -8.7 | -4.3 | -0.8 | 3.6 | 10.6 | 15.8 | 21.4 | 18.5 | 12.1 | 5.8 | -5.7 | -9.3 |
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Daylight maximum duration (h) | 10.0 | 11.0 | 12.0 | 13.0 | 14.0 | 14.0 | 14.0 | 13.0 | 12.0 | 11.0 | 10.0 | 9.0 |
| Daylight mean duration (h) | 10.1 | 10.9 | 12.0 | 13.1 | 14.0 | 14.5 | 14.2 | 13.4 | 12.4 | 11.3 | 10.3 | 9.9 |
| Daylight minimum duration (h) | 9.0 | 10.0 | 11.0 | 12.0 | 13.0 | 14.0 | 13.0 | 12.0 | 11.0 | 10.0 | 10.0 | 9.0 |
| Sunshine mean duration (h) | 7.4 | 7.1 | 9.0 | 8.0 | 7.2 | 8.4 | 9.4 | 10.0 | 7.7 | 8.0 | 7.0 | 6.4 |
| Precipitation (mm) | 12 | 19 | 10 | 93 | 96 | 69 | 166 | 111 | 81 | 7 | 26 | 25 |
| Sunny days | 27 | 23 | 29 | 17 | 15 | 17 | 9 | 16 | 13 | 25 | 24 | 26 |
| Rainy days | 2 | 5 | 2 | 13 | 16 | 13 | 22 | 15 | 17 | 6 | 6 | 4 |
| Snow days | 2 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 1 |
The largest precipitation sum in Hainan is at