Climate averages 1991–2020
Changsha weather
in August.
A hot, wet month: the 2nd warmest and the 7th driest of the year.
Long-term climate patterns, not a forecast for a particular trip.
August is a hot month in Changsha: daytime highs average 32.4°C and nights cool to about 25.3°C. By daytime temperature it is the 2nd warmest of the 12 months.
Expect about 127 mm of rain on roughly 13 days, which makes August a wet month (the 7th driest of the 12 months). Daylight, from sunrise to sunset, lasts about 13 h 09 min on an average August day.
The nearest other city in this atlas is Xiangtan (39 km away). In August its highs average 32.7°C, about as warm as Changsha, with 132 mm of rain.
Among the 884 cities listed in China, Changsha ranks joint 52nd of 884 for the warmest August highs and joint 159th of 884 for the driest August (rainfall, lowest first). The mean August high of those 884 cities is 29.3°C; Changsha is 3.2°C warmer than that mean.
From August to September, average highs fall by 3.6°C to 28.8°C, and monthly rainfall falls from 127 mm to 85 mm.
The annual picture
August 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
Changsha climate table
| Month | Average highHigh / low | Average low | Rainfall mm/month | Rain days ≥1 mm/day | Daylight hours/dayDaylight h/day |
|---|---|---|---|---|---|
| January | 9.7°C2.7°C | 2.7°C | 74 | 10.8 | 10.611 h |
| February | 12.4°C4.9°C | 4.9°C | 95 | 12.3 | 11.211 h |
| March | 16.5°C8.6°C | 8.6°C | 180 | 17.1 | 12.012 h |
| April | 22.4°C14.1°C | 14.1°C | 236 | 16.7 | 12.813 h |
| May | 26.6°C18.7°C | 18.7°C | 275 | 16.8 | 13.514 h |
| June | 29.3°C22.6°C | 22.6°C | 299 | 17.3 | 13.914 h |
| July | 32.7°C25.8°C | 25.8°C | 181 | 12.8 | 13.714 h |
| August, selected | 32.4°C25.3°C | 25.3°C | 127 | 13.4 | 13.113 h |
| September | 28.8°C21.2°C | 21.2°C | 85 | 9.5 | 12.412 h |
| October | 23.8°C15.8°C | 15.8°C | 64 | 8.0 | 11.512 h |
| November | 17.8°C9.8°C | 9.8°C | 75 | 9.0 | 10.811 h |
| December | 12.1°C4.4°C | 4.4°C | 53 | 7.9 | 10.410 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
August in nearby cities
- Xiangtan in AugustChina · 39 kmHigh 32.7°C · Low 25.6°C · 132 mm rain
- Zhuzhou in AugustChina · 44 kmHigh 32.8°C · Low 25.7°C · 135 mm rain
- Shaoshan in AugustChina · 54 kmHigh 32.0°C · Low 25.0°C · 132 mm rain
- Guankou in AugustChina · 64 kmHigh 32.6°C · Low 25.2°C · 134 mm rain
- Xiangxiang in AugustChina · 67 kmHigh 32.6°C · Low 25.5°C · 133 mm rain
- Heshan in AugustChina · 74 kmHigh 31.5°C · Low 25.0°C · 154 mm rain
- Xishan in AugustChina · 79 kmHigh 32.8°C · Low 25.5°C · 139 mm rain
- Pingxiang in AugustChina · 108 kmHigh 32.1°C · Low 24.7°C · 182 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 Changsha) is explained once on the Changsha year overview and on the Sources, method and limits page.