Sơn La Weather & Climate: Best Time to Visit

In Sơn La, seasonal changes bring about a moderate variation in temperatures. Typically, average maximum daytime temperatures range from a very warm 31°C (88°F) in May to a comfortable 22°C (72°F) in the coolest month, January.

Nights vary from 23°C (73°F) in May to around 12°C (54°F) during the colder months.

Check out our detailed temperature page for more information.

Temperature ranges by month

Sơn La experiences significant rainfall throughout the year, averaging 1663 mm (65 in) of precipitation annually. The climate in Sơn La shows significant variation throughout the year. Expect heavy rainfall in July, the wettest month, with an average of 349 mm (14 in) of precipitation over 22 rainy days.

In contrast, the driest month February offers drier and sunnier days, with around 29 mm (1.1 in) of rainfall over 8 rainy days. For more details, please visit our Sơn La Precipitation page.

The mean monthly precipitation over the year, including rain, hail, and snow

The average number of days each month with precipitation

Sơn La offers a pleasant mix of sunny and slightly overcast days. The difference in sunshine hours between May (6.8 hours daily) and February (4.7 hours daily) provides a bit of variety for visitors and residents.

Visit our detailed sunshine hours page for more information.

Monthly hours of sunshine

Daily hours of sunshine

The relative humidity is high throughout the year in Sơn La.

The city experiences its highest humidity in August, reaching 85%. In March, the humidity drops to its lowest level at 72%. What does this mean? Read our detailed page on humidity levels for further details.

Relative humidity over the year