★ January30° · ☂ 1 February 33° · ☂ 1 March 35° · ☂ 2 April 37° · ☂ 5 May 35° · ☂ 12 June 33° · ☂ 11 July 32° · ☂ 15 August 32° · ☂ 17 September 32° · ☂ 14 October 32° · ☂ 10 November 31° · ☂ 4 ★ December29° · ☂ 1 Chiang Mai in December:properly hot, almost no rain Chiang Mai, Thailand · Records from 2006 to 2025. Not a forecast.
Mean high 29° Hottest day 33.8° (2012)
Mean low 17° Coldest night 7.1° (2017)
Rain days 1 day 0-4 by year
Rainfall 10mm Daylight 11.1 → 11.0 h
Chiang Mai's 12 months i Best: December and January
1 2 3 4 5 6 7 8 9 10 11 12
Trip types Sightseeing on foot Finemostly dry
Humidity 78% 8 muggy days
Clear days 16 days 2 overcast days
Mean wind 4 km/h Rarely windy
Sunrise / sunset (15th) 06:49 / 17:50 Daylight 11.1 → 11.0 h
Chiang Mai in December A cool, comfortable time. Mornings and evenings are chilly, and the summit of Doi Inthanon at high altitude can drop below freezing in winter. Pack long sleeves. In some years the smoke begins to creep in from around now.
Highs averaged 29°C and lows fell only to 17°C, so evenings brought some relief. A 12°C gap between afternoon and night meant dressing twice: once for the day, once for after dark. Rain fell on only 1 day on average. December could skip rain entirely: 8 of 20 years had none, while 2010 had 4 rain days.
With 12 days above 30°C on average, most of the month felt like high summer. Not every year was typical: 2012 ran 2.2°C warmer than the mean, with highs of 31.4°C.
Typhoons i Typhoons: May
Date by date i Sun
Mon
Tue
Wed
Thu
Fri
Sat
Week
December 1 Tuesday 1 rain in 1 of 20 yrs 1/20 30° 17° December 2 Wednesday 2 rain in 1 of 20 yrs 1/20 30° 18° December 3 Thursday 3 rain in 0 of 20 yrs 0/20 30° 18° December 4 Friday 4 rain in 1 of 20 yrs 1/20 30° 18° December 5 Saturday 5 rain in 1 of 20 yrs 1/20 30° 18° 1-5 rain on 4% of days 30° 18°
December 6 Sunday 6 rain in 0 of 20 yrs 0/20 30° 18° December 7 Monday 7 rain in 1 of 20 yrs 1/20 29° 18° December 8 Tuesday 8 rain in 1 of 20 yrs 1/20 29° 18° December 9 Wednesday 9 rain in 0 of 20 yrs 0/20 30° 18° December 10 Thursday 10 rain in 1 of 20 yrs 1/20 30° 18° December 11 Friday 11 rain in 2 of 20 yrs 2/20 29° 18° December 12 Saturday 12 rain in 2 of 20 yrs 2/20 29° 18° 6-12 rain on 5% of days 30° 18°
December 13 Sunday 13 rain in 1 of 20 yrs 1/20 30° 18° December 14 Monday 14 rain in 1 of 20 yrs 1/20 30° 18° December 15 Tuesday 15 rain in 1 of 20 yrs 1/20 30° 17° December 16 Wednesday 16 rain in 1 of 20 yrs 1/20 29° 17° December 17 Thursday 17 rain in 2 of 20 yrs 2/20 28° 18° December 18 Friday 18 rain in 1 of 20 yrs 1/20 28° 17° December 19 Saturday 19 rain in 0 of 20 yrs 0/20 28° 17° 13-19 rain on 5% of days 29° 17°
December 20 Sunday 20 rain in 0 of 20 yrs 0/20 28° 16° December 21 Monday 21 rain in 0 of 20 yrs 0/20 29° 16° December 22 Tuesday 22 rain in 0 of 20 yrs 0/20 29° 15° December 23 Wednesday 23 rain in 0 of 20 yrs 0/20 29° 15° December 24 Thursday 24 rain in 0 of 20 yrs 0/20 29° 15° December 25 Friday 25 rain in 0 of 20 yrs 0/20 29° 16° December 26 Saturday 26 rain in 1 of 20 yrs 1/20 29° 16° 20-26 rain on 1% of days 29° 16°
December 27 Sunday 27 rain in 1 of 20 yrs 1/20 29° 16° December 28 Monday 28 rain in 0 of 20 yrs 0/20 29° 17° December 29 Tuesday 29 rain in 1 of 20 yrs 1/20 29° 17° December 30 Wednesday 30 rain in 0 of 20 yrs 0/20 29° 16° December 31 Thursday 31 rain in 0 of 20 yrs 0/20 29° 17°
27-31 rain on 2% of days 29° 17°
1-5 rain on 4% of days 30° 18° 6-12 rain on 5% of days 30° 18° 13-19 rain on 5% of days 29° 17° 20-26 rain on 1% of days 29° 16° 27-31 rain on 2% of days 29° 17°
Sun
Mon
Tue
Wed
Thu
Fri
Sat
Week
December 1 Wednesday 1 rain in 1 of 20 yrs 1/20 30° 17° December 2 Thursday 2 rain in 1 of 20 yrs 1/20 30° 18° December 3 Friday 3 rain in 0 of 20 yrs 0/20 30° 18° December 4 Saturday 4 rain in 1 of 20 yrs 1/20 30° 18° 1-4 rain on 4% of days 30° 18°
December 5 Sunday 5 rain in 1 of 20 yrs 1/20 30° 18° December 6 Monday 6 rain in 0 of 20 yrs 0/20 30° 18° December 7 Tuesday 7 rain in 1 of 20 yrs 1/20 29° 18° December 8 Wednesday 8 rain in 1 of 20 yrs 1/20 29° 18° December 9 Thursday 9 rain in 0 of 20 yrs 0/20 30° 18° December 10 Friday 10 rain in 1 of 20 yrs 1/20 30° 18° December 11 Saturday 11 rain in 2 of 20 yrs 2/20 29° 18° 5-11 rain on 4% of days 30° 18°
December 12 Sunday 12 rain in 2 of 20 yrs 2/20 29° 18° December 13 Monday 13 rain in 1 of 20 yrs 1/20 30° 18° December 14 Tuesday 14 rain in 1 of 20 yrs 1/20 30° 18° December 15 Wednesday 15 rain in 1 of 20 yrs 1/20 30° 17° December 16 Thursday 16 rain in 1 of 20 yrs 1/20 29° 17° December 17 Friday 17 rain in 2 of 20 yrs 2/20 28° 18° December 18 Saturday 18 rain in 1 of 20 yrs 1/20 28° 17° 12-18 rain on 6% of days 29° 18°
December 19 Sunday 19 rain in 0 of 20 yrs 0/20 28° 17° December 20 Monday 20 rain in 0 of 20 yrs 0/20 28° 16° December 21 Tuesday 21 rain in 0 of 20 yrs 0/20 29° 16° December 22 Wednesday 22 rain in 0 of 20 yrs 0/20 29° 15° December 23 Thursday 23 rain in 0 of 20 yrs 0/20 29° 15° December 24 Friday 24 rain in 0 of 20 yrs 0/20 29° 15° December 25 Saturday 25 rain in 0 of 20 yrs 0/20 29° 16° 19-25 rain on 0% of days 29° 16°
December 26 Sunday 26 rain in 1 of 20 yrs 1/20 29° 16° December 27 Monday 27 rain in 1 of 20 yrs 1/20 29° 16° December 28 Tuesday 28 rain in 0 of 20 yrs 0/20 29° 17° December 29 Wednesday 29 rain in 1 of 20 yrs 1/20 29° 17° December 30 Thursday 30 rain in 0 of 20 yrs 0/20 29° 16° December 31 Friday 31 rain in 0 of 20 yrs 0/20 29° 17°
26-31 rain on 3% of days 29° 17°
1-4 rain on 4% of days 30° 18° 5-11 rain on 4% of days 30° 18° 12-18 rain on 6% of days 29° 18° 19-25 rain on 0% of days 29° 16° 26-31 rain on 3% of days 29° 17°
Tap another date to change
2006 none
2007 none
2008 none
2009 none
2010 7mm
2011 none
2012 none
2013 none
2014 none
2015 none
2016 none
2017 none
2018 1mm
2019 none
2020 none
2021 none
2022 none
2023 none
2024 none
2025 none
Holidays in December (2026) December 5 to December 7 National Day long weekendDecember 7 Substitute for King Bhumibol's Birthday, National Day and Father's Day (5 Dec)December 10 Constitution DayDecember 31 to January 3 New Year breakDecember 25 Christmas Day 1 Local public holiday or break (busier, pricier)1 US holidays (flights fill up)
Holidays in December (2027) December 4 to December 6 National Day long weekendDecember 6 Substitute for King Bhumibol's Birthday, National Day and Father's Day (5 Dec)December 10 to December 12 Constitution Day long weekendDecember 31 to January 2 New Year breakDecember 24 Christmas Day (observed)December 25 Christmas Day 1 Local public holiday or break (busier, pricier)1 US holidays (flights fill up)
Day by day temperature i 14° 21° 28° 35° 1 8 15 22 29 31
Your trip dates, the past 20 years Trip dates December 1 (Tue) 2 (Wed) 3 (Thu) 4 (Fri) 5 (Sat) 6 (Sun) 7 (Mon) 8 (Tue) 9 (Wed) 10 (Thu) 11 (Fri) 12 (Sat) 13 (Sun) 14 (Mon) 15 (Tue) 16 (Wed) 17 (Thu) 18 (Fri) 19 (Sat) 20 (Sun) 21 (Mon) 22 (Tue) 23 (Wed) 24 (Thu) 25 (Fri) 26 (Sat) 27 (Sun) 28 (Mon) 29 (Tue) 30 (Wed) 31 (Thu) ~ December 1 (Tue) 2 (Wed) 3 (Thu) 4 (Fri) 5 (Sat) 6 (Sun) 7 (Mon) 8 (Tue) 9 (Wed) 10 (Thu) 11 (Fri) 12 (Sat) 13 (Sun) 14 (Mon) 15 (Tue) 16 (Wed) 17 (Thu) 18 (Fri) 19 (Sat) 20 (Sun) 21 (Mon) 22 (Tue) 23 (Wed) 24 (Thu) 25 (Fri) 26 (Sat) 27 (Sun) 28 (Mon) 29 (Tue) 30 (Wed) 31 (Thu) 1-7 8-14 15-21 22-end Whole month
You can also click two dates on the axis. Hover a cell to see that day's rain. By year Driest trips first
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31
Trip rain days Month rain days Tap a date to start, tap another to end. Each cell is that date in one year. '06 '07 '08 '09 '10 '11 '12 '13 '14 '15 '16 '17 '18 '19 '20 '21 '22 '23 '24 '25
of 20 10 Thu Pick December 10
1 11 Fri Pick December 11
2 12 Sat Pick December 12
2 13 Sun Pick December 13
1 14 Mon Pick December 14
1 15 Tue Pick December 15
1 16 Wed Pick December 16
1 17 Thu Pick December 17
2 18 Fri Pick December 18
1 19 Sat Pick December 19
0 20 Sun Pick December 20
0 21 Mon Pick December 21
0 22 Tue Pick December 22
0 23 Wed Pick December 23
0 24 Thu Pick December 24
0 25 Fri Pick December 25
0 26 Sat Pick December 26
1 27 Sun Pick December 27
1 28 Mon Pick December 28
0 29 Tue Pick December 29
1 30 Wed Pick December 30
0 31 Thu Pick December 31
0 Dates outside your trip are dimmed.
One row per year, one cell per day. 2006 had 0 rain days, 2010 had 4.
Chiang Mai through the year Common questions Does it rain a lot in Chiang Mai in December? Over the past 20 years December averaged 1 rain day (1 mm or more) out of 31. Individual years ran from 0 in the driest to 4 in the wettest.
What should I wear in Chiang Mai in December? Days averaged 29°C and nights 17°C. Pack a light layer for the evenings, T-shirts, and sunscreen plus a hat.
Is December a good time to visit Chiang Mai? On warmth and rain days alone, Chiang Mai's easiest months were December and January. December ranked first of 12.
Is Chiang Mai humid in December? Mean relative humidity was 78%, with about 8 muggy days (dew point of 20°C or more) in the month.
Previous month Chiang Mai in November Next month Chiang Mai in January Whole year Chiang Mai weather by month Where to go December By country Thailand: all cities this month Compare Compare with Bangkok