Climate averages 1991–2020
Haikou weather
in April.
A hot, moderately wet month: the 6th warmest and the 6th driest of the year.
Long-term climate patterns, not a forecast for a particular trip.
April is a hot month in Haikou: daytime highs average 28.4°C and nights cool to about 23.4°C. By daytime temperature it is the 6th warmest of the 12 months.
Expect about 71 mm of rain on roughly 12 days, which makes April a moderately wet month (the 6th driest of the 12 months). Daylight, from sunrise to sunset, lasts about 12 h 35 min on an average April day.
The nearest other city in this atlas is Qiongshan (3 km away). In April its highs average 28.0°C, about as warm as Haikou, with 71 mm of rain.
Among the 884 cities listed in China, Haikou ranks joint 14th of 884 for the warmest April highs and joint 499th of 884 for the driest April (rainfall, lowest first). The mean April high of those 884 cities is 20.6°C; Haikou is 7.8°C warmer than that mean.
From April to May, average highs rise by 1.9°C to 30.3°C, and monthly rainfall rises from 71 mm to 123 mm.
The annual picture
April 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, selected | 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 | 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
April in nearby cities
- Qiongshan in AprilChina · 3 kmHigh 28.0°C · Low 23.3°C · 71 mm rain
- Xucheng in AprilChina · 38 kmHigh 29.1°C · Low 22.7°C · 65 mm rain
- Wenchang in AprilChina · 72 kmHigh 29.2°C · Low 23.6°C · 77 mm rain
- Qionghai in AprilChina · 89 kmHigh 28.4°C · Low 23.8°C · 73 mm rain
- Nada in AprilChina · 99 kmHigh 31.1°C · Low 22.1°C · 90 mm rain
- Dacheng in AprilChina · 116 kmHigh 31.4°C · Low 22.0°C · 90 mm rain
- Sandu in AprilChina · 121 kmHigh 28.9°C · Low 23.1°C · 57 mm rain
- Yaxing in AprilChina · 131 kmHigh 30.8°C · Low 21.9°C · 75 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.