Climate averages 1991–2020
Haimen weather
in July.
A hot, very wet month: the warmest and the 10th driest of the year.
Long-term climate patterns, not a forecast for a particular trip.
July is a hot month in Haimen: daytime highs average 29.8°C and nights cool to about 26.0°C. By daytime temperature it is the warmest month of the year.
Expect about 210 mm of rain on roughly 21 days, which makes July a very wet month (the 10th driest of the 12 months). Daylight, from sunrise to sunset, lasts about 13 h 25 min on an average July day.
The nearest other city in this atlas is Shantou (19 km away). In July its highs average 30.2°C, about as warm as Haimen, with 188 mm of rain.
Among the 884 cities listed in China, Haimen ranks joint 598th of 884 for the warmest July highs and joint 586th of 884 for the driest July (rainfall, lowest first). The mean July high of those 884 cities is 30.0°C; Haimen is 0.2°C cooler than that mean.
From July to August, average highs fall by 0.1°C to 29.7°C, and monthly rainfall rises from 210 mm to 261 mm.
The annual picture
July 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, selected | 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 | 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
July in nearby cities
- Shantou in JulyChina · 19 kmHigh 30.2°C · Low 26.0°C · 188 mm rain
- Chenghua in JulyChina · 34 kmHigh 29.9°C · Low 25.7°C · 206 mm rain
- Huicheng (Guangdong), China in JulyChina · 37 kmHigh 29.9°C · Low 26.1°C · 221 mm rain
- Jieyang in JulyChina · 46 kmHigh 31.4°C · Low 25.2°C · 212 mm rain
- Puning in JulyChina · 47 kmHigh 31.0°C · Low 25.3°C · 226 mm rain
- Chaozhou in JulyChina · 51 kmHigh 30.8°C · Low 24.9°C · 241 mm rain
- Jiazi in JulyChina · 65 kmHigh 30.0°C · Low 26.2°C · 259 mm rain
- Huanggang (Guangdong), China in JulyChina · 67 kmHigh 30.3°C · Low 25.3°C · 249 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.