Climate averages 1991–2020
Sơn La weather
in December.
A mild, fairly dry month: the 11th warmest and the 2nd driest of the year. Meets the pleasant-weather rule
Long-term climate patterns, not a forecast for a particular trip.
December is a mild month in Sơn La: daytime highs average 21.0°C and nights cool to about 12.4°C. By daytime temperature it is the 11th warmest of the 12 months.
Expect about 23 mm of rain on roughly 4 days, which makes December a fairly dry month (the 2nd driest of the 12 months). Daylight, from sunrise to sunset, lasts about 10 h 52 min on an average December day.
The nearest other city in this atlas is Thị Trấn Thuận Châu (27 km away). In December its highs average 21.4°C, about as warm as Sơn La, with 38 mm of rain.
Among the 136 cities listed in Vietnam, Sơn La ranks joint 105th of 136 for the warmest December highs and 1st of 136 for the driest December (rainfall, lowest first). The mean December high of those 136 cities is 25.0°C; Sơn La is 4.1°C cooler than that mean.
From December to January, average highs fall by 0.1°C to 20.9°C, and monthly rainfall rises from 23 mm to 24 mm.
The annual picture
December 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 | 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, selected | 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
December in nearby cities
- Thị Trấn Thuận Châu in DecemberVietnam · 27 kmHigh 21.4°C · Low 12.9°C · 38 mm rain
- Dien Bien Phu in DecemberVietnam · 93 kmHigh 22.5°C · Low 12.7°C · 29 mm rain
- Yên Bái in DecemberVietnam · 112 kmHigh 19.7°C · Low 14.7°C · 41 mm rain
- Lào Cai in DecemberVietnam · 129 kmHigh 20.0°C · Low 13.2°C · 92 mm rain
- Phú Thọ in DecemberVietnam · 135 kmHigh 20.5°C · Low 14.7°C · 28 mm rain
- Tuyên Quang in DecemberVietnam · 145 kmHigh 20.7°C · Low 14.3°C · 28 mm rain
- Việt Trì in DecemberVietnam · 154 kmHigh 20.5°C · Low 14.6°C · 29 mm rain
- Ba Vì in DecemberVietnam · 154 kmHigh 18.5°C · Low 12.8°C · 32 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.