When to go · September

Thailand in September

Best to skip this month

Heaviest rain

Home / When to go / Thailand / September

Daytime high

32°C

90°F

Overnight low

24°C

75°F

Rainfall

225 mm

wet

Crowd levels

low

quiet

Prices

low

value window

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 24°C (75°F). Skies are typically distinctly rainy, with about 225 mm of rainfall on average. Heaviest rain.

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.

Plan your trip