Climate averages 1991–2020
Sơn La weather
in April.
A hot, moderately wet month: the 2nd warmest and the 7th driest of the year.
Long-term climate patterns, not a forecast for a particular trip.
April is a hot month in Sơn La: daytime highs average 29.0°C and nights cool to about 19.5°C. By daytime temperature it is the 2nd warmest of the 12 months.
Expect about 72 mm of rain on roughly 13 days, which makes April a moderately wet month (the 7th driest of the 12 months). Daylight, from sunrise to sunset, lasts about 12 h 38 min on an average April day.
The nearest other city in this atlas is Thị Trấn Thuận Châu (27 km away). In April its highs average 29.3°C, about as warm as Sơn La, with 112 mm of rain.
Among the 136 cities listed in Vietnam, Sơn La ranks joint 87th of 136 for the warmest April highs and 40th of 136 for the driest April (rainfall, lowest first). The mean April high of those 136 cities is 30.6°C; Sơn La is 1.7°C cooler than that mean.
From April to May, average highs rise by 0.4°C to 29.3°C, and monthly rainfall rises from 72 mm to 147 mm.
The annual picture
April 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, selected | 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 | 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
April in nearby cities
- Thị Trấn Thuận Châu in AprilVietnam · 27 kmHigh 29.3°C · Low 19.7°C · 112 mm rain
- Dien Bien Phu in AprilVietnam · 93 kmHigh 30.1°C · Low 20.5°C · 115 mm rain
- Yên Bái in AprilVietnam · 112 kmHigh 27.9°C · Low 21.3°C · 126 mm rain
- Lào Cai in AprilVietnam · 129 kmHigh 29.3°C · Low 20.6°C · 129 mm rain
- Phú Thọ in AprilVietnam · 135 kmHigh 28.8°C · Low 21.8°C · 86 mm rain
- Tuyên Quang in AprilVietnam · 145 kmHigh 28.8°C · Low 21.8°C · 96 mm rain
- Việt Trì in AprilVietnam · 154 kmHigh 28.6°C · Low 21.7°C · 81 mm rain
- Ba Vì in AprilVietnam · 154 kmHigh 26.9°C · Low 19.8°C · 104 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.