Thailand in September
September is the cheapest month to be in Thailand and the one where flexibility pays, because ferry cancellations on the Andaman side are routine.
Is September a good time to visit Thailand?
September is one of the better months across Thailand, with crowds averaging 44/100 and typical highs near 33°C.
What closes and what fills up in September
- The wettest month nationally — peak of the southwest monsoon
How September compares across the year
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Frequently asked questions
Is September a good month to visit Thailand?
September is one of the better months across Thailand, with crowds averaging 44/100 and typical highs near 33°C.
How busy is Thailand in September?
Averaged across the destinations we track, Thailand sits near 44/100 in September. The calmest of them is Bangkok.
What is the weather like in Thailand in September?
Expect average highs near 33°C and lows near 25°C, with roughly 21 wet days — though Thailand varies by region.