Climate averages 1991–2020
Sơn La weather
in October.
A warm, moderately wet month: the 8th warmest and the 5th driest of the year.
Long-term climate patterns, not a forecast for a particular trip.
October is a warm month in Sơn La: daytime highs average 25.9°C and nights cool to about 18.8°C. By daytime temperature it is the 8th warmest of the 12 months.
Expect about 49 mm of rain on roughly 8 days, which makes October a moderately wet month (the 5th driest of the 12 months). Daylight, from sunrise to sunset, lasts about 11 h 40 min on an average October day.
The nearest other city in this atlas is Thị Trấn Thuận Châu (27 km away). In October its highs average 26.4°C, 0.5°C warmer than Sơn La, with 60 mm of rain.
Among the 136 cities listed in Vietnam, Sơn La ranks 132nd of 136 for the warmest October highs and 1st of 136 for the driest October (rainfall, lowest first). The mean October high of those 136 cities is 28.4°C; Sơn La is 2.5°C cooler than that mean.
From October to November, average highs fall by 2.0°C to 23.8°C, and monthly rainfall falls from 49 mm to 26 mm.
The annual picture
October 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, selected | 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
October in nearby cities
- Thị Trấn Thuận Châu in OctoberVietnam · 27 kmHigh 26.4°C · Low 19.4°C · 60 mm rain
- Dien Bien Phu in OctoberVietnam · 93 kmHigh 27.0°C · Low 19.5°C · 72 mm rain
- Yên Bái in OctoberVietnam · 112 kmHigh 27.1°C · Low 22.0°C · 115 mm rain
- Lào Cai in OctoberVietnam · 129 kmHigh 26.9°C · Low 21.2°C · 118 mm rain
- Phú Thọ in OctoberVietnam · 135 kmHigh 27.8°C · Low 22.0°C · 103 mm rain
- Tuyên Quang in OctoberVietnam · 145 kmHigh 28.0°C · Low 21.9°C · 103 mm rain
- Việt Trì in OctoberVietnam · 154 kmHigh 27.9°C · Low 21.9°C · 100 mm rain
- Ba Vì in OctoberVietnam · 154 kmHigh 25.6°C · Low 19.9°C · 133 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.