Climate averages 1991–2020
Haikou weather
in August.
A hot, very wet month: the 3rd warmest and the wettest of the year.
Long-term climate patterns, not a forecast for a particular trip.
August is a hot month in Haikou: daytime highs average 30.5°C and nights cool to about 26.5°C. By daytime temperature it is the 3rd warmest of the 12 months.
Expect about 231 mm of rain on roughly 21 days, which makes August a very wet month (the wettest month of the year). Daylight, from sunrise to sunset, lasts about 12 h 49 min on an average August day.
The nearest other city in this atlas is Qiongshan (3 km away). In August its highs average 30.3°C, about as warm as Haikou, with 231 mm of rain.
Among the 884 cities listed in China, Haikou ranks joint 326th of 884 for the warmest August highs and joint 755th of 884 for the driest August (rainfall, lowest first). The mean August high of those 884 cities is 29.3°C; Haikou is 1.3°C warmer than that mean.
From August to September, average highs fall by 1.2°C to 29.3°C, and monthly rainfall falls from 231 mm to 218 mm.
The annual picture
August in context
Monthly rainfall
Average total · mmAverages from hourly ERA5 reanalysis data. Actual weather varies from year to year. How these numbers are calculated
Every month, side by side
Haikou climate table
| Month | Average highHigh / low | Average low | Rainfall mm/month | Rain days ≥1 mm/day | Daylight hours/dayDaylight h/day |
|---|---|---|---|---|---|
| January | 20.7°C17.2°C | 17.2°C | 30 | 6.1 | 11.111 h |
| February | 22.3°C18.2°C | 18.2°C | 31 | 6.2 | 11.511 h |
| March | 25.5°C20.6°C | 20.6°C | 35 | 7.2 | 12.012 h |
| April | 28.4°C23.4°C | 23.4°C | 71 | 11.7 | 12.613 h |
| May | 30.3°C25.6°C | 25.6°C | 123 | 17.4 | 13.113 h |
| June | 31.3°C26.8°C | 26.8°C | 148 | 17.1 | 13.313 h |
| July | 31.4°C26.9°C | 26.9°C | 170 | 16.9 | 13.213 h |
| August, selected | 30.5°C26.5°C | 26.5°C | 231 | 20.5 | 12.813 h |
| September | 29.3°C25.7°C | 25.7°C | 218 | 18.7 | 12.312 h |
| October | 27.3°C24.2°C | 24.2°C | 161 | 12.8 | 11.712 h |
| November | 25.0°C22.0°C | 22.0°C | 43 | 7.5 | 11.211 h |
| December | 21.6°C18.7°C | 18.7°C | 35 | 5.8 | 10.911 h |
Rainfall is the average of the 30 separate monthly totals. A rain day is a local calendar day with at least 1 mm of precipitation. Daylight is the calculated sunrise-to-sunset length, not measured sunshine.
Compare places
August in nearby cities
- Qiongshan in AugustChina · 3 kmHigh 30.3°C · Low 26.4°C · 231 mm rain
- Xucheng in AugustChina · 38 kmHigh 30.6°C · Low 26.1°C · 253 mm rain
- Wenchang in AugustChina · 72 kmHigh 31.1°C · Low 26.0°C · 259 mm rain
- Qionghai in AugustChina · 89 kmHigh 30.5°C · Low 26.3°C · 234 mm rain
- Nada in AugustChina · 99 kmHigh 30.8°C · Low 24.5°C · 261 mm rain
- Dacheng in AugustChina · 116 kmHigh 30.8°C · Low 24.5°C · 261 mm rain
- Sandu in AugustChina · 121 kmHigh 30.3°C · Low 26.7°C · 276 mm rain
- Yaxing in AugustChina · 131 kmHigh 30.4°C · Low 24.5°C · 250 mm rain
Read the numbers correctly
Climate, not a promise.
These patterns help compare months. They cannot tell you the weather on a specific day of your trip.
Sources, method and limitsHow these numbers are made (what the highs, lows and rain days mean, the sources and the model cell used for Haikou) is explained once on the Haikou year overview and on the Sources, method and limits page.
Qiongshan lies in the same rainfall cell, so its rainfall figures are identical to these; temperatures differ because they come from smaller 0.1° cells.