Chiang Mai Weather in December
December in Chiang Mai brings high temperatures, with daytime highs of 30°C (86°F) and nights around 16°C (61°F). Only 12 mm (0.5 in) of rainfall is typical, making it a largely dry month.
Rainfall in Chiang Mai in December
Records from the past 30 years suggest around 2 days of rain, with 12 mm (0.5 in) average for the month. On the rare occasion it rains, expect a brief, moderate shower rather than a heavy downpour.
Temperature in Chiang Mai in December
The perfect temperature in Chiang Mai in December makes it a solid month to visit, with 30°C (86°F) during the day and 16°C (61°F) at night. This gives the month a fairly typical daily rhythm, with warmer afternoons and more comfortable nights. Nights cool down to 16°C (61°F), so a light jacket or extra layer is useful once the sun goes down. On the plus side, the cooler nights make for comfortable sleeping conditions. Although it's cooler than other months, you can still expect warm and pleasant weather.
Sunshine in Chiang Mai in December
The month enjoys around 259 hours of sunshine, creating mostly sunny days with good weather conditions.
Wind Speed in Chiang Mai in December
Average wind conditions reach () in December. This results in mostly calm, still weather and is ideal for most activities. While this is an average, conditions can vary slightly from completely calm to occasionally breezy days.If your ideal day consists of dry skies and pleasant temperatures, January, November and December typically offer the best circumstances for Chiang Mai.
Check the conditions for any month of the year.
For a detailed overview over the year and the best time to visit Thailand, check out our Chiang Mai's climate page.
Chiang Mai Temperature in December
Min Temperature
16°C (61°F)
Max Temperature
30°C (86°F)
Chance of Rain
6%
Precipitation
12 mm (0.5 in)
Rainy days
2 days
Humidity
73%
Windspeed
()
Sunshine
259 hours
Percentage Sunshine
Daily Historical Temperatures
50-year average (1976-2025)
Based on our historical records, temperatures in Chiang Mai typically stay consistent throughout December, with daily highs averaging around 30°C (86°F). Nights are pleasant, with lows typically ranging from 15°C (59°F) to 18°C (64°F).
Average temperatures in December
Daily Historical Precipitation
50-year average (1976-2025)
Average daily rainfall for each day of the month based on long-term records.
Average precipitation in December
Historical weather for Chiang Mai in December
Browse day-by-day weather records for Chiang Mai spanning 51 years. Select any month and year to see actual temperatures, rainfall, and conditions recorded on each day.
Chiang Mai historical weather extremes in December
Our historical data for Chiang Mai spans 1976 to 2025, revealing these weather extremes.
- Chiang Mai recorded its highest December temperature of 35°C (95°F) on December 20, 2010.
- The coldest December day was on December 27, 2017, with a maximum of 19°C (66°F).
- The coldest night in December in Chiang Mai was on December 25, 1999, with a minimum of 6°C (43°F).
Best Places in Thailand in December
Find out more about the weather in Thailand and which places have the best travel conditions in this month. See all of Thailand in December →
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What to Wear in Chiang Mai in December
Warm but pleasant conditions in Chiang Mai in December. Focus on lightweight, maybe with natural fabrics, cotton blend shirts, comfortable shorts, and breathable footwear. A light cover-up for sun protection is smart too. Dry conditions mean you won't need to worry about rain protection. And with plenty of sunshine hours, don’t forget sunglasses, sunscreen, and maybe a sun hat.What To Do in Chiang Mai in December
We rated the following activities from 1 (least suitable) to 10 (best) to do.
Check the conditions for any month of the year.
For a detailed overview over the year and the best time to visit Thailand, check out our Chiang Mai's climate page.
Temperature Rainfall Sunshine Humidity Wind Speed
See the full Chiang Mai climate overview or explore weather in Thailand.
