Haikou Climate by Month
Haikou, Hainan, China
Hot days and mild nights all year, with a rainy season from June to October.
Haikou has hot days and mild nights all year, with a rainy season from June to October. Afternoon highs range from 70°F (21°C) in January to 91°F (33°C) in June, and January nights average 60°F (15°C). Of the 65 in (1646 mm) of rain in a typical year, 74% falls from June to October. The air is humid, averaging 79% relative humidity.
- Warmest month
- 91°F(33°C)
- Average high, June
- Coldest nights
- 60°F(15°C)
- Average low, January
- Rain per year
- 65 in(1646 mm)
- Wettest: August
- Humidity
- 79%
- Sunniest: July
Best and worst months in Haikou
Best for weatherFebruary, November and December are the best time for weather in Haikou: highs near 74°F (24°C) and about 1.4 in (36 mm) of rain a month.
Least pleasantJuly and August are the least pleasant; July is the wettest, with 11 in (278 mm) of rain.
Comfort combines how close the afternoon high is to 75°F (24°C) with how much rain falls and how humid it is. See where the weather is best in December.
Temperature and rain through the year
Highs and lows (°F)
Average highAverage low
Rain (in per month)
Haikou weather by month
| Month | High | Low | Rain | Humidity | Sun |
|---|---|---|---|---|---|
| JanJanuary | 70°F(21°C) | 60°F(15°C) | 1.0 in(25 mm) | 76% | 3.5 |
| FebFebruaryBest | 72°F(22°C) | 61°F(16°C) | 1.1 in(28 mm) | 81% | 3.9 |
| MarMarch | 78°F(26°C) | 66°F(19°C) | 1.7 in(43 mm) | 82% | 4.3 |
| AprApril | 84°F(29°C) | 72°F(22°C) | 3.4 in(86 mm) | 82% | 5.0 |
| MayMay | 90°F(32°C) | 76°F(25°C) | 6.3 in(161 mm) | 78% | 5.7 |
| JunJune | 91°F(33°C) | 78°F(26°C) | 8.7 in(222 mm) | 78% | 5.6 |
| JulJuly | 91°F(33°C) | 78°F(26°C) | 11 in(278 mm) | 79% | 5.8 |
| AugAugust | 90°F(32°C) | 78°F(25°C) | 11 in(286 mm) | 81% | 5.5 |
| SepSeptember | 88°F(31°C) | 77°F(25°C) | 9.5 in(242 mm) | 80% | 5.1 |
| OctOctober | 84°F(29°C) | 73°F(23°C) | 7.7 in(195 mm) | 78% | 4.8 |
| NovNovemberBest | 79°F(26°C) | 68°F(20°C) | 1.7 in(44 mm) | 74% | 4.0 |
| DecDecemberBest | 73°F(23°C) | 62°F(17°C) | 1.4 in(36 mm) | 75% | 3.5 |
1991–2020 averages. Sun is solar radiation in kWh/m² per day. Highlighted: the most comfortable months.
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