Average annual temperature is 16.1 °C
Absolute maximum temperature: 32.2 °C
Absolute minimum temperature: -0.9 °C
Number of sunny days: 152 days
Number of rainy days: 213 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) | 23.1 | 22.2 | 24.1 | 27.8 | 32.2 | 31.8 | 29.8 | 26.2 | 26.9 | 24.3 | 22.1 | 18.8 |
| Average daytime temperature (°C) | 16.6 | 19.0 | 20.7 | 23.9 | 25.2 | 25.7 | 25.5 | 24.0 | 24.0 | 21.1 | 18.8 | 15.5 |
| Average temperature (°C) | 10.1 | 12.7 | 14.4 | 17.7 | 19.5 | 20.6 | 20.4 | 19.7 | 19.1 | 16.3 | 12.8 | 9.9 |
| Average night temperature (°C) | 2.8 | 5.2 | 7.1 | 10.2 | 12.9 | 16.3 | 16.7 | 17.0 | 15.1 | 11.8 | 6.5 | 4.4 |
| Absolute minimum temperature (°C) | -0.9 | 2.7 | 4.7 | 4.2 | 9.6 | 14.6 | 13.6 | 16.0 | 12.2 | 7.5 | 4.2 | 1.4 |
| 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) | 10.7 | 11.3 | 12.0 | 12.8 | 13.4 | 13.7 | 13.6 | 13.0 | 12.3 | 11.6 | 10.9 | 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) | 9.9 | 9.9 | 10.7 | 11.2 | 10.7 | 9.8 | 9.2 | 7.8 | 10.0 | 8.3 | 9.0 | 8.3 |
| Precipitation (mm) | 0 | 3 | 9 | 10 | 67 | 220 | 236 | 366 | 236 | 261 | 36 | 61 |
| Sunny days | 28 | 21 | 18 | 17 | 14 | 4 | 4 | 0 | 3 | 8 | 23 | 12 |
| Rainy days | 3 | 7 | 13 | 13 | 17 | 26 | 27 | 31 | 27 | 23 | 7 | 19 |
| Snow days | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
The largest precipitation sum in Haikou is at