Average annual temperature is 17.1 °C
Absolute maximum temperature: 32.9 °C
Absolute minimum temperature: 0.5 °C
Number of sunny days: 140 days
Number of rainy days: 225 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) | 22.7 | 24.0 | 24.4 | 29.9 | 32.5 | 32.9 | 29.4 | 25.5 | 26.2 | 26.1 | 24.3 | 21.5 |
| Average daytime temperature (°C) | 15.2 | 18.7 | 21.3 | 26.1 | 27.1 | 25.3 | 25.7 | 23.6 | 23.9 | 21.4 | 19.3 | 17.1 |
| Average temperature (°C) | 9.6 | 13.4 | 15.6 | 20.3 | 21.6 | 20.9 | 21.0 | 19.9 | 19.6 | 17.0 | 14.0 | 11.9 |
| Average night temperature (°C) | 4.0 | 8.7 | 10.3 | 14.5 | 16.5 | 17.2 | 17.3 | 17.2 | 15.9 | 13.2 | 9.2 | 7.3 |
| Absolute minimum temperature (°C) | 0.5 | 5.5 | 5.8 | 10.7 | 13.4 | 15.5 | 16.0 | 15.2 | 14.2 | 10.4 | 4.0 | 2.8 |
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Daylight maximum duration (h) | 11.0 | 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) | 10.8 | 11.3 | 12.0 | 12.7 | 13.3 | 13.6 | 13.5 | 13.0 | 12.3 | 11.6 | 11.0 | 10.6 |
| Daylight minimum duration (h) | 10.0 | 11.0 | 11.0 | 12.0 | 13.0 | 13.0 | 13.0 | 12.0 | 11.0 | 11.0 | 10.0 | 10.0 |
| Sunshine mean duration (h) | 8.2 | 8.9 | 9.9 | 11.5 | 10.7 | 10.3 | 10.0 | 9.9 | 10.4 | 8.0 | 8.8 | 7.7 |
| Precipitation (mm) | 6 | 9 | 18 | 14 | 36 | 216 | 171 | 316 | 74 | 71 | 30 | 9 |
| Sunny days | 21 | 19 | 17 | 19 | 14 | 3 | 3 | 0 | 3 | 1 | 18 | 22 |
| Rainy days | 10 | 9 | 14 | 11 | 17 | 27 | 28 | 31 | 27 | 30 | 12 | 9 |
| Snow days | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
The largest precipitation sum in Haikou is at