San Sai Weather in September

San Sai in September sees very high temperatures, with highs around 32°C (90°F) and overnight lows of 24°C (75°F). With the rainy season in full effect, expect around 263 mm (10 in) of rainfall and regular showers throughout the month.

Rainfall in San Sai in September

As part of the rainy season, San Sai sees around 18 days of rain in September, with an average of 263 mm (10 in). Rain during the rainy season is significant rather than just light drizzle. Expect proper showers on most rainy days.

Temperature in San Sai in September

San Sai in September gets highs of 32°C (90°F) during the day and drops to 24°C (75°F) at night. It's usually most comfortable outside during the morning and later in the day. With overnight lows of 24°C (75°F), evenings and nights remain warm. Light clothing and an open window or fan can help you sleep comfortably.

Sunshine in San Sai in September

The area enjoys a balanced 148 hours of sunlight, ensuring it's neither too rainy nor too sunny.

Wind Speed in San Sai 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 San Sai. 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 San Sai's climate page.

San Sai Temperature in September

Min Temperature 24°C (75°F)  

Max Temperature 32°C (90°F)  

Chance of Rain 59%  

Precipitation 263 mm (10 in)  

Rainy days 18 days  

Humidity 81% *  

Windspeed 1 m/s (2 knots) *  

Sunshine 148 hours *  

Percentage Sunshine *  

* Data from: Chiang Mai, Thailand (10 KM, 6 Miles).

What to Wear in San Sai in September

Warm but pleasant conditions in San Sai 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. Bring sunglasses since you'll have some sunny periods throughout the month

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

More climate data for San Sai

Temperature Rainfall Sunshine Humidity Wind Speed

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