Changwat Chiang Mai Weather in September

During September, Changwat Chiang Mai experiences very high daytime temperatures of 33°C (91°F) and cooler nights around 24°C (75°F). September sits within the rainy season, so expect regular and often heavy rainfall.

Rainfall in Changwat Chiang Mai in September

Changwat Chiang Mai is in the rainy season in September, with rain on around 18 days and an average of 248 mm (9.8 in). Rainfall this month is frequent and tends to be fairly heavy when it does fall. Packing waterproofs is a good idea.

Temperature in Changwat Chiang Mai in September

Temperatures in Changwat Chiang Mai in September top out at 33°C (91°F) and drop to 24°C (75°F) overnight. If you're spending a lot of time outdoors, it helps to plan around the warmer part of the day. With lows around 24°C (75°F), the nights are warm enough that a sheet is usually all you need for bedding.

Sunshine in Changwat Chiang Mai in September

You can expect a moderate amount of sunlight, with approximately 148 hours. Even though this month is part of the wet season, you can still see the sun occasionally.

Wind Speed in Changwat Chiang Mai in September

September has wind speeds averaging 1 m/s (2 knots). You can expect very gentle conditions with light air movement on typical days. Since this is an average, daily weather varies from perfectly still moments to some breezier days.

If you're looking for dry conditions and comfortable temperatures, September may not be the ideal month to visit Changwat Chiang Mai. Our weather planner can help you explore destinations with more pleasant weather conditions.