Surat Thani weather in September 2025

Expect 90°F daytime maximum temperatures in the shade with on average 6 hours of sunshine per day in Surat Thani in September. Check more long-term weather averages for Surat Thani in September before you book your next holiday to Thailand in 2025/2026.

  • 90°F maximum daytime temperature in September in Surat Thani90
    90°F max day temperature
  • 6 hours of sunshine per day
  • 19 days with some rainfall in September in Surat Thani19
    19 days with some rainfall
  • 73°F minimum night-time temperature in September in Surat Thani73
    73°F min night temperature
  • 12 hours of daylight per day in September in Surat Thani12
    12 hours of daylight per day
  • Very high heat & humidity in September in Surat ThaniVH
    Very High heat & humidity
  • 7.6 inches monthly rainfall in September in Surat Thani7.6
    7.6 inches of monthly rainfall
  • UV (maximum) index 11+ (Extreme) in September in Surat Thani11
    11+ (Extreme) UV index
  • 84°F sea temperature in September in Surat Thani84
    84°F sea temperature

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The September weather guide for Thailand (Surat Thani) shows long term weather averages processed from data supplied by CRU (University of East Anglia), the Met Office & the Netherlands Meteorological Institute. Find out more about our data sources.

Metric (°C)  |  Imperial (°F)

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More about Thailand

How hot is it in Surat Thani in September?

Daytime temperatures usually reach 90°F in Surat Thani in September with very high heat and humidity, falling to 73°F at night.

How sunny is it in Surat Thani in September?

There are normally 6 hours of bright sunshine each day in Surat Thani in September - that's 46% of daylight hours.

How warm is the sea around Surat Thani in September?

The average sea temperature around Surat Thani in September is 84°F.

Does it rain in Surat Thani in September?

There are usually 19 days with some rain in Surat Thani in September and the average monthly rainfall is 7.6 inches.

Surat Thani September sunrise & sunset times

Browse the sunrise and sunset times for Surat Thani in September 2025. Select a month to view Surat Thani sunrise and sunset times for the next 12 months.

JanFebMarAprMayJunJulAugSepOctNovDec

Date Sunrise times Sunset times
Monday, 1st September 2025 06:14 18:31
Monday, 15th September 2025 06:13 18:23
Tuesday, 30th September 2025 06:11 18:14

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