Chiang Mai weather in September (Chiang Mai Province, Thailand)

Looking to travel to Chiang Mai in September? Wondering if it's an optimal time for a visit? This page provides detailed information on the weather conditions for that month.

In September, Chiang Mai generally has very high temperatures and heavy rainfall. Daytime temperatures hover around 33°C, while nights can cool down to about 24°C. Keep in mind, these temperatures are averages, and some days might be even warmer. Dress suitably to manage the heat.

Chiang Mai in September falls under the rainy season with heavy rainfall, averaging around 249 mm for the month. Delving into the climate records from the past 30 years, one can predict that nearly 18 days of the month will see rainfall.

The area enjoys a balanced 148 hours of sunlight. Ensuring it's neither too overcast nor too sunny.

If you're looking for dry conditions and comfortable temperatures, September may not be the ideal month to visit Chiang Mai. January, November and December generally stand out with the best circumstances. While April, May, July, August and September tend to showcase less optimal conditions.

For an in-depth look at the yearly conditions, visit our specialized Chiang Mai climate page with graphs.

 

Chiang Mai, monthly averages in September

Min Temperature 24°C  

Max Temperature 33°C  

Chance of Rain 60%  

Precipitation 249 mm  

Rainy days 18 days  

Humidity 81%  

Windspeed 4 km/h  

Sunshine 148 hours  

Percentage Sunshine  

Where to go in Thailand in September

Find out more about the weather in Thailand in September and which places have the best weather conditions in this month.

Weather conditions Weather

Temperatures

Precipitation

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Legend perfect weather pleasant tolerable unpleasant poor

Perfect weather is subjective. On this map perfect weather has been defined with temperatures between 20°C and 29°C and not too much precipitation (less than 90 mm a month).

So, what should you wear in Chiang Mai in September?

It's going to be warm! Consider airy clothing, t-shirts, and other summer clothes. Shorts for men made of cotton or linen are good options for staying cool. However, there's a good chance of rain, so bring a raincoat just in case.

What To Do

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

Swimming

7/10

Cycling

7/10

Walking

7/10

Camping

6/10

Outdoor sports

7/10

Interested in more climate information?

Weather and Climate provides you with all the information you need about the climate in Chiang Mai.

Our site offers climate and forecast data for every country in the world. Are you going to Thailand? On this website you can find historical weather averages for many cities in Thailand. Not sure yet where to go? We now have a tool which recommends destinations that suit your ideal climate conditions. Find out where to go with our weather planner.