Climate averages 1991–2020
Sơn La weather
in August.
A hot, very wet month: the 5th 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 Sơn La: daytime highs average 28.0°C and nights cool to about 21.8°C. By daytime temperature it is the 5th warmest of the 12 months.
Expect about 283 mm of rain on roughly 25 days, which makes August a very wet month (the 11th driest of the 12 months). Daylight, from sunrise to sunset, lasts about 12 h 52 min on an average August day.
The nearest other city in this atlas is Thị Trấn Thuận Châu (27 km away). In August its highs average 28.5°C, 0.5°C warmer than Sơn La, with 363 mm of rain.
Among the 136 cities listed in Vietnam, Sơn La ranks 127th of 136 for the warmest August highs and joint 78th of 136 for the driest August (rainfall, lowest first). The mean August high of those 136 cities is 30.5°C; Sơn La is 2.5°C cooler than that mean.
From August to September, average highs fall by 0.5°C to 27.4°C, and monthly rainfall falls from 283 mm to 150 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
Sơn La climate table
| Month | Average highHigh / low | Average low | Rainfall mm/month | Rain days ≥1 mm/day | Daylight hours/dayDaylight h/day |
|---|---|---|---|---|---|
| January | 20.9°C12.3°C | 12.3°C | 24 | 4.0 | 11.011 h |
| February | 23.5°C13.8°C | 13.8°C | 20 | 3.7 | 11.411 h |
| March | 27.4°C16.9°C | 16.9°C | 50 | 7.1 | 12.012 h |
| April | 29.0°C19.5°C | 19.5°C | 72 | 12.7 | 12.613 h |
| May | 29.3°C21.3°C | 21.3°C | 147 | 19.3 | 13.113 h |
| June | 28.7°C22.2°C | 22.2°C | 209 | 23.0 | 13.413 h |
| July | 28.1°C22.1°C | 22.1°C | 288 | 24.5 | 13.313 h |
| August, selected | 28.0°C21.8°C | 21.8°C | 283 | 25.2 | 12.913 h |
| September | 27.4°C20.9°C | 20.9°C | 150 | 17.5 | 12.312 h |
| October | 25.9°C18.8°C | 18.8°C | 49 | 8.3 | 11.712 h |
| November | 23.8°C15.7°C | 15.7°C | 26 | 4.5 | 11.111 h |
| December | 21.0°C12.4°C | 12.4°C | 23 | 3.6 | 10.911 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
- Thị Trấn Thuận Châu in AugustVietnam · 27 kmHigh 28.5°C · Low 22.2°C · 363 mm rain
- Dien Bien Phu in AugustVietnam · 93 kmHigh 28.6°C · Low 22.6°C · 368 mm rain
- Yên Bái in AugustVietnam · 112 kmHigh 30.6°C · Low 24.9°C · 415 mm rain
- Lào Cai in AugustVietnam · 129 kmHigh 31.2°C · Low 24.5°C · 268 mm rain
- Phú Thọ in AugustVietnam · 135 kmHigh 31.2°C · Low 25.3°C · 369 mm rain
- Tuyên Quang in AugustVietnam · 145 kmHigh 31.3°C · Low 25.2°C · 412 mm rain
- Việt Trì in AugustVietnam · 154 kmHigh 31.2°C · Low 25.3°C · 311 mm rain
- Ba Vì in AugustVietnam · 154 kmHigh 29.2°C · Low 23.3°C · 330 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 Sơn La) is explained once on the Sơn La year overview and on the Sources, method and limits page.