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

Curious about the September weather in Chiang Rai? Check out this comprehensive weather guide.

In September, Chiang Rai generally has very high temperatures and heavy rainfall. Anticipate daytime temperatures around 32°C, while night temperatures can drop to 24°C. Bear in mind, these are average temperatures, and it can get even warmer on particular days. Make sure to choose clothing that accommodates the warmth.

Chiang Rai in September falls under the rainy season with heavy rainfall, averaging around 290 mm for the month. Rain is expected on roughly 18 days.

The area experiences a moderate amount of sunshine, with approximately 145 hours of sunlight expected. This makes it neither too gloomy nor overly bright.

If you're looking for dry conditions and comfortable temperatures, September may not be the ideal month to visit Chiang Rai. January, February and December typically offer the most agreeable circumstances. On the other hand, April, May, June, July, August and September tend to be characterized by conditions that may not be as optimal.

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

 

Chiang Rai, monthly averages in September

Min TemperatureMin Temperature 24°C  
Max TemperatureMax Temperature 32°C  
Chance of RainChance of Rain 59%  
PrecipitationPrecipitation 290 mm  
Rainy daysRainy days 18 days  
HumidityHumidity 83%  
SunshineSunshine 145 hours  
Percentage SunshinePercentage 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.

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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 Rai 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 Rai.

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.