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.

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For a detailed overview over the year and the best time to visit Thailand, check out our Changwat Chiang Mai's climate page.

Changwat Chiang Mai Temperature in September

Min Temperature 24°C (75°F)  

Max Temperature 33°C (91°F)  

Chance of Rain 60%  

Precipitation 248 mm (9.8 in)  

Rainy days 18 days  

Humidity 81% *  

Windspeed 1 m/s (2 knots) *  

Sunshine 148 hours *  

Percentage Sunshine *  

* Data from: Chiang Mai, Thailand (2 KM, 1 Miles).

What to Wear in Changwat Chiang Mai in September

Warm weather calls for comfortable, breathable clothing in September. Cotton t-shirts, shorts, light dresses, and sandals are perfect. You might still want a light layer for evenings or air-conditioned places (for example buses). Also bring a poncho, it will rain a lot! Waterproof everything you can. Bring sunglasses since you'll have some sunny periods throughout the month

What To Do in Changwat Chiang Mai in September

We rated the following activities from 1 (least suitable) to 10 (best) to do.

Swimming

7/10

Cycling

7/10

Walking

7/10

Camping

6/10

Outdoor sports

7/10

Select a Month

Check the conditions for any month of the year.

• January
• February
• March
• April

• May
• June
• July
• August

• September
• October
• November
• December

For a detailed overview over the year and the best time to visit Thailand, check out our Changwat Chiang Mai's climate page.

More climate data for Changwat Chiang Mai

Temperature Rainfall Sunshine Humidity Wind Speed

See the full Changwat Chiang Mai climate overview or explore weather in Thailand.