Chiang Mai in Autumn — Weather & What to Expect
Autumn in Chiang Mai (September, October, November) averages daytime highs of 29.1°C and lows of 21.9°C, with around 692.4mm of rain across the season (55 rainy days in total). It includes some of the best months of the year to visit (September, October, November).
In the northern hemisphere, autumn in Chiang Mai covers September, October, November.
Autumn in Chiang Mai month by month
| Month | High | Low | Rain | Rainy days | Rating |
|---|---|---|---|---|---|
| September | 29.4°C | 23.2°C | 424.5mm | 26 | 8/10 |
| October | 28.9°C | 22.1°C | 203.4mm | 19 | 8/10 |
| November | 29.0°C | 20.3°C | 64.5mm | 10 | 10/10 |
What to pack for Chiang Mai in autumn
- Light layers
- Sunscreen
- T-shirts and light trousers or shorts
- Compact travel umbrella
- Waterproof jacket
- Quick-dry clothing
- Light waterproof layer
Frequently Asked Questions
Is autumn a good time to visit Chiang Mai?
Autumn in Chiang Mai rates around 9/10 — excellent time to visit. Average highs are 29.1°C with 692.4mm of rain across the season.
How hot is Chiang Mai in autumn?
Daytime highs average 29.1°C (84.4°F) across September, October, November, with nights around 21.9°C.
What months are autumn in Chiang Mai?
Chiang Mai is in the northern hemisphere, so autumn covers September, October, November.
See also: best time to visit Chiang Mai · Chiang Mai annual climate · Chiang Mai in spring · Chiang Mai in summer · Chiang Mai in winter
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Once you know what autumn in Chiang Mai looks like, find out exactly what to pack for Chiang Mai at 247PackingList. For currency, language and country facts, see the Thailand guide at 247CountryInfo.
Autumn in Chiang Mai — what to pack
Travel clothing layers
Pack layers — temperatures can vary significantly between day and night.
Check Price →Check clothing sizes in Thailand at 247Sizing before you shop.
More autumn travel essentials
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Climate data sourced from Open-Meteo (open source, open data licence). Monthly averages calculated from 2020–2023 historical data. Weather can be unpredictable — always check a live forecast before travelling.