Best Time to Visit Chiang Mai

Best time to visit
All year
Subtropical — hot summers, mild winters, rainfall spread throughout year

Chiang Mai is best visited All year, when skies are clearer and temperatures are warm without being extreme.

🌫️ Air quality note: Chiang Mai sits in a region affected by seasonal burning-season haze, when PM2.5 levels can climb sharply for days at a time. See the full air quality & wildfire smoke guide →

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Once you know the best time to go, find out exactly what to pack for Chiang Mai at 247PackingList — climate-matched checklists for every destination. For country facts like currency, language and plug type, see our Thailand country guide at 247CountryInfo. Some travellers fund a longer stay in Chiang Mai by teaching English along the way — a TEFL certificate is usually all it takes.

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Chiang Mai — Monthly Temperatures

10°C50°F20°C68°F30°C86°FJan: 16.4–27.7°CJan27.7°Feb: 17.8–30.0°CFeb30.0°Mar: 21.3–34.5°CMar34.5°Apr: 23.2–34.8°CApr34.8°May: 24.4–33.7°CMay33.7°Jun: 24.1–31.9°CJun31.9°Jul: 23.9–30.7°CJul30.7°Aug: 23.6–29.6°CAug29.6°Sep: 23.2–29.4°CSep29.4°Oct: 22.1–28.9°COct28.9°Nov: 20.3–29.0°CNov29.0°Dec: 17.5–27.4°CDec27.4°

Average daily high and low temperatures (°C/°F). Bars show the daily range each month.

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Chiang Mai Weather Month by Month

MonthHighLowRainSun/dayRainy daysRating
January Best 27.7°C 16.4°C 12.1mm 10.7h 2
10/10
February Best 30.0°C 17.8°C 47.1mm 10.7h 2
10/10
March Best 34.5°C 21.3°C 15.3mm 10.7h 2
10/10
April Best 34.8°C 23.2°C 94.1mm 10.6h 9
10/10
May Best 33.7°C 24.4°C 191.0mm 10.8h 20
9/10
June Best 31.9°C 24.1°C 219.9mm 9.3h 26
8/10
July Best 30.7°C 23.9°C 343.1mm 9.3h 28
8/10
August Best 29.6°C 23.6°C 416.6mm 7.6h 30
8/10
September Best 29.4°C 23.2°C 424.5mm 8.6h 26
8/10
October Best 28.9°C 22.1°C 203.4mm 9.4h 19
8/10
November Best 29.0°C 20.3°C 64.5mm 10.4h 10
10/10
December Best 27.4°C 17.5°C 20.8mm 10.6h 2
10/10

Chiang Mai Climate

Chiang Mai has a subtropical climate — hot summers, mild winters, rainfall spread throughout the year. Check the annual climate overview for Chiang Mai for the full year picture, or read the dedicated Chiang Mai rainy season guide.

Counting down to your trip? Use our holiday countdown timer at LeftToTime to track the days. Owners often keep a Chiang Mai travel guide to hand for planning on the go. Check clothing sizes in Thailand at 247Sizing before you shop.

Frequently Asked Questions

What is the best month to visit Chiang Mai?

The best month to visit Chiang Mai is January, when temperatures average 27.7°C and conditions score 10/10 for comfort.

What is the weather like in Chiang Mai in January?

January in Chiang Mai is warm, with average highs of 27.7°C and lows of 16.4°C. It is very dry, with roughly 10.7 hours of sunshine a day. This is peak season for good reason — conditions are close to ideal.

When is rainy season in Chiang Mai?

Rainy season in Chiang Mai runs May, June, July, August, September, October. Expect heavy downpours and high humidity. Full rainy season guide →

Is Chiang Mai good to visit in winter?

Yes — winter (December, January, February) averages 27.7°C highs with a 10/10 comfort rating, making it a solid time to visit.

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Last updated:

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.