Chiang Mai weather in December
“Reliably warm, dry, and generous with light.”
Roughly 3 rainy days across the month, on average.
December is peak dry season in Chiang Mai, offering some of the year's most pleasant weather. Daytime temperatures average 27.4°C (81°F), while nights cool to a refreshing 17.3°C (63°F). Rainfall is minimal at just 24.2mm across 3-4 rainy days, and you'll enjoy abundant sunshine with 10.2 hours daily. It's the sweet spot between Thailand's hot season and occasional cooler spells.
This is festival season in Chiang Mai. December hosts the famous Loy Krathong celebrations (if timing aligns) and marks the start of peak tourism. The weather is ideal for exploring temples, night markets, and trekking in the surrounding mountains. Crowds are moderate to high, especially around holidays, but the pleasant conditions make it worth the busier atmosphere.
For 2026, December remains an excellent choice for first-time visitors and those avoiding heat and humidity. Pack layers since mornings and evenings can feel cool, and bring a light rain jacket just in case. Book accommodation and tours in advance due to seasonal demand.
Sunday walking street on Ratchadamnoen is 90 percent tourists; go to Wua Lai Saturday market for silversmith heritage instead. Khao soi at Khao Soi Khun Yai is 40 baht and closes at 2pm daily. Digital nomad cafes cluster in Nimman; real Chiang Mai lives in Santitham and Chang Puak. The songthaew red truck is 30 baht anywhere in old city; never take a tuk-tuk unless you enjoy overpaying. Doi Suthep temple at 6am beats the tour bus 10am crowd.
What to pack for Chiang Mai in December
December's mild temperatures and low rainfall mean you can pack light layers. Mornings and evenings dip to 63°F, so bring a cardigan or light sweater for comfort. Days are warm and sunny, perfect for breathable fabrics. A compact rain jacket handles the occasional shower, and comfortable walking shoes are essential for temple visits and exploration.
- Lightweight linen shirt
- Cotton cardigan or fleece pullover
- Khaki chinos or lightweight pants
- Compact rain jacket
- Walking sandals or canvas sneakers
What to pack for Chiang Mai in December
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Where to stay in Chiang Mai
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Compare hotels on Booking.com→Estimated December trip to Chiang Mai
Peak season prices — book early or shift by 2–3 weeks to save. Rule-based estimates from a couple based in London — actual prices vary.
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Delayed flight to Chiang Mai?
Flights to Chiang Mai in December can be delayed by storms. Claim up to €600 if yours is 3+ hours late. EU regulations cover flights departing from or arriving in the EU/UK.
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Things worth doing
Temple hopping at Wat Chedi Luang and Wat Phra Singh, mountain trekking to hill tribe villages, exploring Chiang Mai Night Bazaar, visiting local coffee plantations.
December vs. the rest of the year
How this month compares in Chiang Mai. Tap any month to read more.
highlighted months are among the best time to visit.
Best time to visit Chiang Mai
December is one of the best months to visit Chiang Mai — alongside January, November. 11-year climate data (2015–2025) confirms it: comfortable temperatures, manageable rainfall, and a healthy dose of sunshine.
See the full best-time-to-visit guide for Chiang MaiOther places with a similar climate right now
Chiang Mai in December — FAQ
Q01Is December a good time to visit Chiang Mai?
Is December a good time to visit Chiang Mai?
Yes — this is one of the best months of the year to visit. In December, Chiang Mai averages a high of 27°C (81°F) and a low of 17°C (63°F), with 24mm of rainfall across roughly 3 rainy days. Mid-November after monsoon clears, before December burning-season smoke; Loy Krathong sky lanterns fill Ping River and Doi Suthep sunrise runs clear.
Q02What is the average temperature in Chiang Mai in December?
What is the average temperature in Chiang Mai in December?
The average high temperature in Chiang Mai during December is 27°C (81°F), with an average low of 17°C (63°F). These figures are averaged from 11 complete years of daily records (2015–2025, Open-Meteo Archive). December mornings on Doi Inthanon summit hit 5C with frost; sleeveless-culture Chiang Mai residents pull out puffy jackets sold at Warorot Market.
Q03How many rainy days does Chiang Mai have in December?
How many rainy days does Chiang Mai have in December?
Chiang Mai averages approximately 3 rainy days in December, with a total monthly rainfall of about 24mm. This is based on daily precipitation records where days with 1mm or more of rain are counted as rainy days.
Q04What should I pack for Chiang Mai in December?
What should I pack for Chiang Mai in December?
For Chiang Mai in December, pack light, breathable clothing (cotton or linen), sunscreen and sunglasses, comfortable walking shoes. These recommendations are based on 11 complete years of weather averages for this specific month. An N95 mask for February through April; PM2.5 hits 300+ from crop burning and street pharmacies sell out fast.
Q05How crowded is Chiang Mai in December?
How crowded is Chiang Mai in December?
Tourist crowds in Chiang Mai during December are typically moderate — winter is high season for tropical destinations. Consider this when planning accommodation — prices track crowd levels closely. Sunday walking street on Ratchadamnoen is 90 percent tourists; go to Wua Lai Saturday market for silversmith heritage instead. Khao soi at Khao Soi Khun Yai is 40 baht and closes at 2pm daily. Digital nomad cafes cluster in Nimman; real Chiang Mai lives in Santitham and Chang Puak. The songthaew red truck is 30 baht anywhere in old city; never take a tuk-tuk unless you enjoy overpaying. Doi Suthep temple at 6am beats the tour bus 10am crowd.