Mae Sai Weather in September

Thinking of visiting Mae Sai in September? Expect very high temperatures reaching 32°C (90°F) during the day, dropping to 23°C (73°F) at night. Heavy showers are common during the rainy season.

Rainfall in Mae Sai in September

As part of the rainy season, Mae Sai sees around 18 days of rain in September, with an average of 298 mm (12 in). With high rainfall totals spread across the month, individual showers can be very heavy. Waterproof gear is strongly recommended.

Temperature in Mae Sai in September

If you're visiting Mae Sai in September, expect highs of 32°C (90°F) and overnight lows around 23°C (73°F). For most visitors, the main thing to prepare for is the heat during the day. Nights are warm at 23°C (73°F). It's worth making sure your accommodation has decent ventilation or air conditioning.

Sunshine in Mae Sai in September

The area enjoys a moderate level of sunlight, with around 145 hours. It's a good balance between sunny and rainy days.

If you prefer dry days with pleasant temperatures, September may not be the ideal month to visit Mae Sai. Our weather planner can help you explore destinations with more pleasant weather conditions.

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• January
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• May
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For a detailed overview over the year and the best time to visit Thailand, check out our Mae Sai's climate page.

Mae Sai Temperature in September

Min Temperature 23°C (73°F)  

Max Temperature 32°C (90°F)  

Chance of Rain 59%  

Precipitation 298 mm (12 in)  

Rainy days 18 days  

Humidity 83% *  

Sunshine 145 hours *  

Percentage Sunshine *  

* Data from: Chiang Rai, Thailand (60 KM, 37 Miles).

What to Wear in Mae Sai in September

Warm temperatures in September make for comfortable sightseeing weather. Pack breathable fabrics like cotton shirts, knee-length shorts or skirts, and comfortable walking shoes. A thin long sleeve for indoor spaces is handy. Heavy rain is guaranteed, please bring a good poncho and waterproof everything! It won't hurt to bring your sunglasses along, as you'll see some sunny periods.

What To Do in Mae Sai 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 Mae Sai's climate page.

More climate data for Mae Sai

Temperature Rainfall Sunshine Humidity

See the full Mae Sai climate overview or explore weather in Thailand.