San Sai
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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.

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).

San Sai Weather by Month

Pick a month to see the average temperature, rainfall and sunshine in San Sai - and find the best time to visit.

Best Places in Thailand in September

Find out more about the weather in Thailand and which places have the best travel conditions in this month. See all of Thailand in September →

perfect weather
pleasant
tolerable
unpleasant
poor

Perfect weather is subjective. On this map perfect weather has been defined with temperatures between 20°C (68°F) and 29°C (84°F) and not too much precipitation (less than 90 mm (3.5 in) a month).

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

San Sai 3-Day Forecast

More climate data for San Sai

Popular in September

Where to go in September - average daytime high across popular destinations.

Bucket list

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