Climate averages 1991–2020
Haikou weather
in December.
A mild, fairly dry month: the 11th warmest and the joint 3rd driest of the year. Meets the pleasant-weather rule
Long-term climate patterns, not a forecast for a particular trip.
December is a mild month in Haikou: daytime highs average 21.6°C and nights cool to about 18.7°C. By daytime temperature it is the 11th warmest of the 12 months.
Expect about 35 mm of rain on roughly 6 days, which makes December a fairly dry month (the joint 3rd driest of the 12 months). Daylight, from sunrise to sunset, lasts about 10 h 57 min on an average December day.
The nearest other city in this atlas is Qiongshan (3 km away). In December its highs average 21.4°C, about as warm as Haikou, with 35 mm of rain.
Among the 884 cities listed in China, Haikou ranks 21st of 884 for the warmest December highs and joint 600th of 884 for the driest December (rainfall, lowest first). The mean December high of those 884 cities is 7.5°C; Haikou is 14.0°C warmer than that mean.
From December to January, average highs fall by 0.9°C to 20.7°C, and monthly rainfall falls from 35 mm to 30 mm.
The annual picture
December 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 | 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, selected | 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
December in nearby cities
- Qiongshan in DecemberChina · 3 kmHigh 21.4°C · Low 18.8°C · 35 mm rain
- Xucheng in DecemberChina · 38 kmHigh 21.4°C · Low 17.0°C · 29 mm rain
- Wenchang in DecemberChina · 72 kmHigh 22.8°C · Low 18.9°C · 33 mm rain
- Qionghai in DecemberChina · 89 kmHigh 22.8°C · Low 18.8°C · 36 mm rain
- Nada in DecemberChina · 99 kmHigh 22.8°C · Low 16.0°C · 27 mm rain
- Dacheng in DecemberChina · 116 kmHigh 23.1°C · Low 16.0°C · 27 mm rain
- Sandu in DecemberChina · 121 kmHigh 22.4°C · Low 18.1°C · 41 mm rain
- Yaxing in DecemberChina · 131 kmHigh 22.8°C · Low 15.9°C · 24 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.