Ang Thong National Marine Park
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When to go
Thailand in September
Where the weather works in September, and where to skip.
- Good
Gulf coast (Samui, Pha Ngan, Tao, Songkhla)
Mostly dry, some showers.
- Mixed
The North
Wet, but waterfalls are at their best.
- Mixed
Isan
Wettest month. Low areas near rivers can flood.
- Avoid if you can
Bangkok, Central and the West
Wettest month. Street flooding in Bangkok is common after storms.
- Avoid if you can
The East coast and islands
Monsoon. Wettest month on the coast.
- Avoid if you can
Andaman coast (Phuket, Krabi, Trang, Satun)
Wettest month on the Andaman side.
Places with good weather in September
Common questions
Is September a good time to visit Thailand?
It is a mixed month. Gulf coast (Samui, Pha Ngan, Tao, Songkhla) is your best bet: Mostly dry, some showers.
General climate patterns from the Thai Meteorological Department (tmd.go.th). Weather varies year to year; treat this as a guide, not a forecast.