Climate averages 1991–2020
Sanya weather
in August.
A hot, very wet month: the 4th warmest and the 11th driest of the year.
Long-term climate patterns, not a forecast for a particular trip.
August is a hot month in Sanya: daytime highs average 29.9°C and nights cool to about 26.1°C. By daytime temperature it is the 4th warmest of the 12 months.
Expect about 261 mm of rain on roughly 24 days, which makes August a very wet month (the 11th driest of the 12 months). Daylight, from sunrise to sunset, lasts about 12 h 45 min on an average August day.
The nearest other city in this atlas is Wuzhishan (59 km away). In August its highs average 29.7°C, about as warm as Sanya, with 274 mm of rain.
Among the 884 cities listed in China, Sanya ranks joint 451st of 884 for the warmest August highs and joint 794th of 884 for the driest August (rainfall, lowest first). The mean August high of those 884 cities is 29.3°C; Sanya is 0.6°C warmer than that mean.
From August to September, average highs fall by 0.4°C to 29.5°C, and monthly rainfall falls from 261 mm to 258 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
Sanya climate table
| Month | Average highHigh / low | Average low | Rainfall mm/month | Rain days ≥1 mm/day | Daylight hours/dayDaylight h/day |
|---|---|---|---|---|---|
| January | 24.1°C18.5°C | 18.5°C | 12 | 2.4 | 11.211 h |
| February | 25.1°C19.5°C | 19.5°C | 9.9 | 2.5 | 11.512 h |
| March | 27.2°C21.9°C | 21.9°C | 18 | 3.8 | 12.012 h |
| April | 29.2°C24.4°C | 24.4°C | 53 | 8.6 | 12.513 h |
| May | 30.3°C26.0°C | 26.0°C | 139 | 18.9 | 13.013 h |
| June | 30.4°C26.7°C | 26.7°C | 212 | 22.2 | 13.213 h |
| July | 30.0°C26.4°C | 26.4°C | 280 | 23.0 | 13.113 h |
| August, selected | 29.9°C26.1°C | 26.1°C | 261 | 24.3 | 12.713 h |
| September | 29.5°C25.4°C | 25.4°C | 258 | 22.3 | 12.312 h |
| October | 28.4°C24.0°C | 24.0°C | 182 | 14.0 | 11.712 h |
| November | 26.9°C22.0°C | 22.0°C | 54 | 5.6 | 11.311 h |
| December | 24.6°C19.3°C | 19.3°C | 26 | 3.0 | 11.111 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
- Wuzhishan in AugustChina · 59 kmHigh 29.7°C · Low 24.2°C · 274 mm rain
- Wanning in AugustChina · 110 kmHigh 30.0°C · Low 26.6°C · 167 mm rain
- Basuo in AugustChina · 130 kmHigh 29.9°C · Low 26.4°C · 340 mm rain
- Yaxing in AugustChina · 135 kmHigh 30.4°C · Low 24.5°C · 250 mm rain
- Dacheng in AugustChina · 140 kmHigh 30.8°C · Low 24.5°C · 261 mm rain
- Nada in AugustChina · 141 kmHigh 30.8°C · Low 24.5°C · 261 mm rain
- Qionghai in AugustChina · 149 kmHigh 30.5°C · Low 26.3°C · 234 mm rain
- Sandu in AugustChina · 173 kmHigh 30.3°C · Low 26.7°C · 276 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 Sanya) is explained once on the Sanya year overview and on the Sources, method and limits page.