Weather · Chiang Mai, Thailand

Chiang Mai Weather in September

Expect hot, very wet in Chiang Mai through September: highs near 29°C, lows around 23°C, 465mm of rain across the month. It's not the easiest month, weather-wise.

Avg high

29°C

84°F

Avg low

23°C

73°F

Rainfall

465mm

#1 wettest of 12

What to pack

Summer clothes by day; a light layer for evenings. Pack a rain jacket or travel umbrella, showers are frequent this month.

← August All 12 months →October →

Visiting in September? Best things to do in Chiang Mai (September is quieter, so the hidden gems are less crowded)

Timing a trip around the weather? A Local Friend in Chiang Mai builds it around the season for you.