Climate averages 1991–2020
Heyuan weather
in September.
A hot, wet month: the 3rd warmest and the 7th driest of the year.
Long-term climate patterns, not a forecast for a particular trip.
September is a hot month in Heyuan: daytime highs average 30.2°C and nights cool to about 23.7°C. By daytime temperature it is the 3rd warmest of the 12 months.
Expect about 150 mm of rain on roughly 14 days, which makes September a wet month (the 7th driest of the 12 months). Daylight, from sunrise to sunset, lasts about 12 h 18 min on an average September day.
The nearest other city in this atlas is Huizhou (74 km away). In September its highs average 30.2°C, about as warm as Heyuan, with 177 mm of rain.
Among the 884 cities listed in China, Heyuan ranks joint 21st of 884 for the warmest September highs and joint 752nd of 884 for the driest September (rainfall, lowest first). The mean September high of those 884 cities is 25.7°C; Heyuan is 4.5°C warmer than that mean.
From September to October, average highs fall by 2.3°C to 28.0°C, and monthly rainfall falls from 150 mm to 44 mm.
The annual picture
September 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
Heyuan climate table
| Month | Average highHigh / low | Average low | Rainfall mm/month | Rain days ≥1 mm/day | Daylight hours/dayDaylight h/day |
|---|---|---|---|---|---|
| January | 17.8°C9.0°C | 9.0°C | 48 | 6.2 | 10.811 h |
| February | 19.4°C11.1°C | 11.1°C | 59 | 9.4 | 11.311 h |
| March | 22.5°C14.5°C | 14.5°C | 122 | 13.6 | 12.012 h |
| April | 26.0°C19.0°C | 19.0°C | 168 | 15.4 | 12.713 h |
| May | 28.5°C22.4°C | 22.4°C | 240 | 20.1 | 13.313 h |
| June | 29.8°C24.5°C | 24.5°C | 295 | 23.3 | 13.614 h |
| July | 31.1°C25.3°C | 25.3°C | 211 | 21.7 | 13.413 h |
| August | 31.1°C25.2°C | 25.2°C | 236 | 21.1 | 13.013 h |
| September, selected | 30.2°C23.7°C | 23.7°C | 150 | 14.3 | 12.312 h |
| October | 28.0°C19.9°C | 19.9°C | 44 | 5.5 | 11.612 h |
| November | 24.1°C15.1°C | 15.1°C | 35 | 5.2 | 11.011 h |
| December | 19.1°C9.9°C | 9.9°C | 36 | 4.3 | 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
September in nearby cities
- Huizhou in SeptemberChina · 74 kmHigh 30.2°C · Low 23.5°C · 177 mm rain
- Luoyang, China in SeptemberChina · 76 kmHigh 30.4°C · Low 23.7°C · 167 mm rain
- Pingshan in SeptemberChina · 82 kmHigh 30.0°C · Low 23.7°C · 194 mm rain
- Licheng in SeptemberChina · 100 kmHigh 30.3°C · Low 23.5°C · 165 mm rain
- Anliu in SeptemberChina · 101 kmHigh 29.8°C · Low 23.0°C · 140 mm rain
- Huacheng in SeptemberChina · 102 kmHigh 30.4°C · Low 22.8°C · 128 mm rain
- Danshui, China in SeptemberChina · 106 kmHigh 29.5°C · Low 24.3°C · 191 mm rain
- Hengbei in SeptemberChina · 107 kmHigh 30.2°C · Low 23.0°C · 114 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 Heyuan) is explained once on the Heyuan year overview and on the Sources, method and limits page.