Sơn La Weather in September

Thinking of visiting Sơn La in September? Expect very high temperatures reaching 30°C (86°F) during the day, dropping to 22°C (72°F) at night. Heavy showers are common during the rainy season.

Rainfall in Sơn La in September

As part of the rainy season, Sơn La sees around 17 days of rain in September, with an average of 189 mm (7.4 in). Rain during the rainy season is significant rather than just light drizzle. Expect proper showers on most rainy days.

Temperature in Sơn La in September

Expect highs of 30°C (86°F) in Sơn La in September, with nights dropping to around 22°C (72°F). It's usually most comfortable outside during the morning and later in the day. Nights remain mild at 22°C (72°F), making evenings a pleasant time to be outdoors.

Sunshine in Sơn La in September

The city usually sees around 182 hours of sunlight, indicating a moderately sunny period (despite it being part of rainy season).

If you prefer dry days with pleasant temperatures, September may not be the ideal month to visit Sơn La. Our weather planner can help you explore destinations with more pleasant weather conditions.