Climate averages 1991–2020
Haimen weather
in December.
A mild, fairly dry month: the 10th warmest and the 2nd 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 Haimen: daytime highs average 19.2°C and nights cool to about 14.0°C. By daytime temperature it is the 10th warmest of the 12 months.
Expect about 39 mm of rain on roughly 5 days, which makes December a fairly dry month (the 2nd driest of the 12 months). Daylight, from sunrise to sunset, lasts about 10 h 44 min on an average December day.
The nearest other city in this atlas is Shantou (19 km away). In December its highs average 19.6°C, about as warm as Haimen, with 51 mm of rain.
Among the 884 cities listed in China, Haimen ranks joint 87th of 884 for the warmest December highs and joint 656th of 884 for the driest December (rainfall, lowest first). The mean December high of those 884 cities is 7.5°C; Haimen is 11.6°C warmer than that mean.
From December to January, average highs fall by 1.8°C to 17.4°C, and monthly rainfall falls from 39 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
Haimen climate table
| Month | Average highHigh / low | Average low | Rainfall mm/month | Rain days ≥1 mm/day | Daylight hours/dayDaylight h/day |
|---|---|---|---|---|---|
| January | 17.4°C12.3°C | 12.3°C | 30 | 4.8 | 10.911 h |
| February | 18.1°C13.1°C | 13.1°C | 42 | 6.9 | 11.411 h |
| March | 20.5°C15.5°C | 15.5°C | 62 | 9.6 | 12.012 h |
| April | 23.9°C19.2°C | 19.2°C | 106 | 11.9 | 12.713 h |
| May | 26.8°C22.7°C | 22.7°C | 191 | 17.3 | 13.213 h |
| June | 28.8°C25.3°C | 25.3°C | 246 | 22.0 | 13.514 h |
| July | 29.8°C26.0°C | 26.0°C | 210 | 20.5 | 13.413 h |
| August | 29.7°C25.8°C | 25.8°C | 261 | 22.1 | 12.913 h |
| September | 28.9°C24.9°C | 24.9°C | 166 | 15.2 | 12.312 h |
| October | 26.5°C22.0°C | 22.0°C | 54 | 5.4 | 11.612 h |
| November | 23.3°C18.2°C | 18.2°C | 54 | 5.0 | 11.011 h |
| December, selected | 19.2°C14.0°C | 14.0°C | 39 | 4.7 | 10.711 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
- Shantou in DecemberChina · 19 kmHigh 19.6°C · Low 13.5°C · 51 mm rain
- Chenghua in DecemberChina · 34 kmHigh 19.4°C · Low 13.3°C · 38 mm rain
- Huicheng (Guangdong), China in DecemberChina · 37 kmHigh 19.4°C · Low 14.0°C · 34 mm rain
- Jieyang in DecemberChina · 46 kmHigh 20.7°C · Low 11.4°C · 35 mm rain
- Puning in DecemberChina · 47 kmHigh 20.5°C · Low 11.7°C · 39 mm rain
- Chaozhou in DecemberChina · 51 kmHigh 20.1°C · Low 10.7°C · 39 mm rain
- Jiazi in DecemberChina · 65 kmHigh 19.7°C · Low 14.2°C · 33 mm rain
- Huanggang (Guangdong), China in DecemberChina · 67 kmHigh 20.1°C · Low 12.5°C · 34 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 Haimen) is explained once on the Haimen year overview and on the Sources, method and limits page.