People's Republic of China
Haikou sees feels-like daytime highs peak around 41.5°C in July and nighttime lows bottom out near 18.6°C in January. September is the wettest month (~234 mm), while January is the driest (~16 mm). For sunshine, February leads with about 67% clear skies.
Based on mild feels-like temperatures and low rain chances, the most comfortable months are January, February, and December — expect around 18.6–22.8°C with roughly 8% chance of rain on a given day in January.
| Month | Low / High °C | Rain % | Rainfall | Clear skies | Wind |
|---|---|---|---|---|---|
| January☀ | 18.6° / 22.8° | 8% | 16 mm | 66% | 18.8 kph |
| February☀ | 20.1° / 25.3° | 8% | 17 mm | 67% | 17.8 kph |
| March | 24.2° / 29.8° | 13% | 28 mm | 62% | 17 kph |
| April | 28.7° / 35.6° | 27% | 63 mm | 48% | 15.3 kph |
| May | 32° / 39.4° | 46% | 130 mm | 21% | 14.2 kph |
| June | 33.8° / 41.4° | 50% | 157 mm | 11% | 14.1 kph |
| July | 33.9° / 41.5° | 51% | 184 mm | 14% | 14.4 kph |
| August | 33.8° / 41.4° | 56% | 222 mm | 16% | 13.6 kph |
| September | 31.8° / 37.9° | 50% | 234 mm | 25% | 15.7 kph |
| October | 29.4° / 34.2° | 35% | 191 mm | 42% | 19.3 kph |
| November | 25.2° / 29.7° | 19% | 69 mm | 57% | 20.9 kph |
| December☀ | 20.8° / 25° | 10% | 29 mm | 65% | 20.4 kph |
Feels-like temperatures from long-term historical data; ☀ marks the most comfortable months (mild temperatures, low rain).
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