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Chiang Mai Weather in December

Cool dry season
For Chiang Mai, December typically brings warm daytime weather and mild nights: the 10-year average high is about 27°C (81°F), while the average low is 18°C (64°F). Rain is relatively limited, with about 3 days reaching at least 1 mm of precipitation and roughly 25 mm for the month.
Avg high81.1°F 27.3°CAvg low63.5°F 17.5°CRainy days~3.2 daysMonthly rain24.8 mm
Chiang Mai travel scenery
🧳 Packing guide

What to wear in Chiang Mai in December

Packing for Chiang Mai in December is easiest with layers: light daytime clothing is usually comfortable, but add a thin cardigan or light jacket for evenings. Heavy rain gear is usually unnecessary, although a small umbrella is an easy backup.

Travel takeaway: For many travelers, these temperatures are comfortable for city sightseeing when you pack one flexible layer.

🗓️ Travel timing at a glance

Chiang Mai: 12-month travel weather

Chiang Mai is coolest and driest from November to February, very hot in March–April, and wetter from May to October. Haze and air quality can also matter in late winter and spring.
Monthly labels summarize typical climate patterns for trip planning. Always check the latest forecast and tropical-storm alerts before departure.
🎉 Trip planning check

Chiang Mai 2026 events & busy periods

Check major events, holidays and periods that may affect crowds, transport or opening hours.
🎊 Featured event
Chiang Mai Songkran
📅 Centered on Apr 13–15 each year

Large water celebrations and traditional New Year events take over the Old City moat and Tha Phae Gate area. Check the official program for local road controls.

Check official source →
⚠️ Busy / closure period
Chiang Mai Loy Krathong and lantern events
📅 Nov 24–25, 2026 · based on the announced official event schedule

Chiang Mai tourism authorities have announced related lantern events for Nov 24–25, 2026. Programs and venues can change because the tradition follows a lunar calendar.

Check official source →
Event dates, holiday schedules and opening hours can change. Recheck the linked official tourism or government source before departure.

Chiang Mai Weather in December

2016–2025 · 10 complete years averaged · °F

Chiang Mai in December · recent 3 years

Compare the most recent complete year with the two years before it. Daily high / low temperatures are shown in °F.
CalendarNo measurable rain🌧️ Rain⛈️ Thunderstorm❄️ SnowHigh / Low · °F
⭐ December 2025 · latest complete year☔ 3 days · 14 mm
Sun
Mon
Tue
Wed
Thu
Fri
Sat
1
☀️
26.4°C/13.6°C
No rain
2
☀️
27.3°C/14.1°C
No rain
3
☀️
28.3°C/15°C
No rain
4
☀️
28.1°C/16.2°C
No rain
5
☀️
28.1°C/17.2°C
No rain
6
🌦️
28.6°C/18.4°C
No rain
7
🌦️
29.4°C/19.3°C
No rain
8
🌦️
27.9°C/19.2°C
No rain
9
🌦️
26.9°C/19.1°C
No rain
10
☁️
26.8°C/17.3°C
No rain
11
☁️
27°C/15.2°C
No rain
12
🌦️
26.7°C/19.6°C
🌧️ 1.1 mm
13
☁️
26.8°C/18.7°C
No rain
14
🌦️
27.8°C/19.1°C
No rain
15
🌤️
27.6°C/18.2°C
No rain
16
🌤️
28°C/18.1°C
No rain
17
🌧️
27.6°C/18.3°C
🌧️ 6.9 mm
18
🌧️
27°C/17.7°C
🌧️ 2.2 mm
19
🌦️
27.2°C/18°C
No rain
20
☀️
27.5°C/16.9°C
No rain
21
🌤️
27.7°C/16.4°C
No rain
22
🌤️
27.4°C/15.9°C
No rain
23
☁️
27.7°C/17.1°C
No rain
24
☁️
29°C/17.5°C
No rain
25
☁️
29°C/16.8°C
No rain
26
☁️
28°C/16.4°C
No rain
27
🌦️
27.5°C/16.8°C
No rain
28
🌤️
27.5°C/16.6°C
No rain
29
🌤️
28.4°C/16.6°C
No rain
30
☁️
27.2°C/15.6°C
No rain
31
☁️
27.5°C/16°C
No rain
December 2024☔ 3 days · 20.2 mm
Sun
Mon
Tue
Wed
Thu
Fri
Sat
1
☁️
28.7°C/18.7°C
No rain
2
☁️
29.4°C/19.5°C
No rain
3
☁️
30.6°C/20.2°C
No rain
4
🌦️
30.3°C/21.3°C
No rain
5
🌧️
29.6°C/21.8°C
🌧️ 13.7 mm
6
🌦️
29.5°C/21.3°C
No rain
7
🌦️
29°C/21.4°C
No rain
8
🌦️
28.8°C/21.2°C
No rain
9
🌦️
28.6°C/21.4°C
No rain
10
🌦️
29.1°C/20.8°C
No rain
11
☁️
30.3°C/19.8°C
No rain
12
☁️
29.3°C/18.9°C
No rain
13
🌦️
29.2°C/19.1°C
No rain
14
🌦️
27°C/20.7°C
🌧️ 1.4 mm
15
🌦️
26°C/20.9°C
No rain
16
🌦️
25.5°C/18.6°C
🌧️ 1.6 mm
17
☁️
26.7°C/16.9°C
No rain
18
☁️
26.9°C/18.2°C
No rain
19
🌦️
26.2°C/18.5°C
No rain
20
⛅
26.2°C/17.5°C
No rain
21
☁️
26.1°C/17.7°C
No rain
22
☁️
25.5°C/17°C
No rain
23
☁️
25.9°C/16.2°C
No rain
24
⛅
26.8°C/16.2°C
No rain
25
🌤️
26.4°C/15.7°C
No rain
26
⛅
28.2°C/15.7°C
No rain
27
☀️
28.4°C/15.9°C
No rain
28
🌤️
28.3°C/17.8°C
No rain
29
☀️
27.4°C/17.9°C
No rain
30
🌤️
26.8°C/18.1°C
No rain
31
🌤️
26.9°C/17.8°C
No rain
December 2023☔ 2 days · 45.3 mm
Sun
Mon
Tue
Wed
Thu
Fri
Sat
1
☁️
28.3°C/19.2°C
No rain
2
🌦️
29.2°C/21.1°C
No rain
3
🌦️
29.2°C/20.7°C
No rain
4
☁️
29.5°C/20.3°C
No rain
5
☁️
29.9°C/20.9°C
No rain
6
🌦️
30.2°C/21.3°C
No rain
7
🌧️
28.9°C/21.4°C
🌧️ 39.5 mm
8
🌦️
28.6°C/21.3°C
🌧️ 3.6 mm
9
🌦️
28.3°C/21.4°C
No rain
10
🌦️
28.9°C/21.3°C
No rain
11
☁️
29.5°C/21.2°C
No rain
12
🌦️
29.3°C/21.3°C
No rain
13
🌦️
29.1°C/20.4°C
No rain
14
☁️
28.8°C/20.5°C
No rain
15
☁️
28.9°C/20.4°C
No rain
16
🌤️
29.1°C/19.2°C
No rain
17
☀️
28.2°C/18.2°C
No rain
18
🌦️
27.7°C/19.7°C
No rain
19
☁️
28.7°C/19°C
No rain
20
☁️
28.6°C/17.5°C
No rain
21
☁️
26.8°C/18.9°C
No rain
22
☁️
25.9°C/18°C
No rain
23
☁️
25.2°C/15.6°C
No rain
24
☁️
24.7°C/14°C
No rain
25
🌤️
24.6°C/14.2°C
No rain
26
☀️
25.3°C/14.2°C
No rain
27
☀️
26.8°C/15.7°C
No rain
28
☀️
27.9°C/16°C
No rain
29
☁️
28.8°C/16.6°C
No rain
30
☁️
28.3°C/15.9°C
No rain
31
☀️
27.9°C/16°C
No rain
Historical calendars use Open-Meteo reanalysis data. A rainy day is counted when daily precipitation is at least 1 mm. Conditions at a specific hotel, beach or station can differ.
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Current Chiang Mai weather and 7-day forecast

When departure is close, the latest forecast matters more than long-term averages.
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Forecast data: MET Norway · CC BY 4.0 · cached by Travel Weather Fairy
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Chiang Mai weather in other months

Switch months to compare the seasonal pattern.
Jan
Cool dry seasonFeb
Dry season · Haze riskMar
Hot dry seasonApr
Very hotMay
Wet season beginsJun
Wet seasonJul
Wet seasonAug
Peak wet seasonSep
Wet seasonOct
Late wet seasonNov
Cool dry seasonDec
Cool dry season
← November weatherJanuary weather →

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