Average annual temperature is 23.8 °C
Absolute maximum temperature: 41.1 °C
Absolute minimum temperature: 2.2 °C
Number of sunny days: 203 days
Number of rainy days: 160 days
Number of snow days: 2 days
Look at detailed online map of Haikou
* Weather data for Haikou 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) | 27.5 | 28.6 | 32.8 | 37.4 | 41.1 | 40.2 | 38.0 | 34.4 | 34.5 | 34.0 | 28.3 | 25.5 |
| Average daytime temperature (°C) | 20.6 | 24.6 | 27.5 | 32.5 | 34.4 | 33.2 | 33.5 | 31.7 | 32.1 | 26.9 | 25.4 | 22.4 |
| Average temperature (°C) | 15.1 | 18.8 | 21.3 | 25.7 | 28.3 | 28.6 | 29.4 | 28.2 | 28.1 | 23.5 | 21.1 | 17.8 |
| Average night temperature (°C) | 9.3 | 12.3 | 15.0 | 18.8 | 22.5 | 24.6 | 25.6 | 25.1 | 24.3 | 19.9 | 16.6 | 13.0 |
| Absolute minimum temperature (°C) | 2.2 | 9.5 | 9.7 | 14.6 | 19.0 | 21.4 | 22.0 | 21.1 | 21.0 | 16.1 | 12.4 | 8.1 |
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Daylight maximum duration (h) | 10.0 | 11.0 | 12.0 | 13.0 | 13.0 | 13.0 | 13.0 | 13.0 | 12.0 | 11.0 | 11.0 | 10.0 |
| Daylight mean duration (h) | 10.6 | 11.2 | 12.0 | 12.8 | 13.5 | 13.8 | 13.7 | 13.1 | 12.3 | 11.5 | 10.8 | 10.5 |
| Daylight minimum duration (h) | 10.0 | 10.0 | 11.0 | 12.0 | 13.0 | 13.0 | 13.0 | 12.0 | 11.0 | 11.0 | 10.0 | 10.0 |
| Sunshine mean duration (h) | 8.8 | 9.6 | 10.4 | 11.4 | 10.7 | 9.2 | 9.9 | 9.1 | 10.1 | 7.6 | 9.3 | 8.8 |
| Precipitation (mm) | 0 | 6 | 6 | 6 | 20 | 91 | 168 | 384 | 68 | 94 | 12 | 7 |
| Sunny days | 28 | 21 | 22 | 23 | 21 | 8 | 11 | 0 | 11 | 9 | 24 | 25 |
| Rainy days | 1 | 7 | 9 | 7 | 10 | 22 | 20 | 31 | 19 | 22 | 6 | 6 |
| Snow days | 2 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
The largest precipitation sum in Haikou is at