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Thailand in September
Phuket and Andaman coast see rough seas; many small islands close resorts entirely.
What to expect in Thailand in September
September brings hot weather to Thailand, with daytime highs around 32°C (90°F) and overnight lows near 25°C (77°F). Skies are typically distinctly rainy, with about 335 mm of rainfall on average. Phuket and Andaman coast see rough seas; many small islands close resorts entirely..
September is a quiet stretch — most attractions are easy to access and you'll often have spaces to yourself. It's one of the best-value windows of the year for both flights and hotels. Peak season runs December–February, for context.
What’s happening in September
- 🎉Sart Thai Festival · SepA Buddhist merit-making occasion when Thais offer krayasart, a sweet made from rice, sesame, peanuts, and sugar, to monks and ancestors. Southern provinces observe the related Sart Duan Sib with elaborate temple offerings.
Live fares for Thailand in September
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