Chiang Saen Weather in September

Chiang Saen in September averages 33°C (91°F) during the day and 24°C (75°F) at night. September is part of the rainy season, so frequent rainfall is typical.

Rainfall in Chiang Saen in September

As part of the rainy season, Chiang Saen sees around 18 days of rain in September, with an average of 295 mm (12 in). The rain this month falls heavily when it arrives. Late afternoons in particular can see strong showers, so waterproofs are worth keeping handy.

Temperature in Chiang Saen in September

Daytime highs in Chiang Saen in September reach 33°C (91°F), with nights around 24°C (75°F). Indoor breaks or shaded spots can make the warmer part of the day much more comfortable. With lows around 24°C (75°F), the nights are warm enough that a sheet is usually all you need for bedding.

Sunshine in Chiang Saen in September

The city usually sees around 145 hours of sunlight, indicating a moderately sunny period (despite it being part of rainy season).

September in Chiang Saen has its charm. However, if you're seeking pleasant, dry and sunny weather, our weather planner can help you explore other destinations in the world.

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

Chiang Saen Temperature in September

Min Temperature 24°C (75°F)  

Max Temperature 33°C (91°F)  

Chance of Rain 58%  

Precipitation 295 mm (12 in)  

Rainy days 18 days  

Humidity 83% *  

Sunshine 145 hours *  

Percentage Sunshine *  

* Data from: Chiang Rai, Thailand (49 KM, 30 Miles).

What to Wear in Chiang Saen in September

Warm but pleasant conditions in Chiang Saen in September. Focus on lightweight, maybe with natural fabrics, cotton blend shirts, comfortable shorts, and breathable footwear. A light cover-up for sun protection is smart too. It's going to pour! Pack a good poncho and prepare for very wet conditions. Sunglasses could come in handy during the sunnier parts of your trip.

What To Do in Chiang Saen 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 Chiang Saen's climate page.

More climate data for Chiang Saen

Temperature Rainfall Sunshine Humidity

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