Climate · Thailand

Chiang Mai

Very hot and mostly dry from March to April; hot and wet from August to January.

Typical weather, averaged over 30 years18.8°N310 m above the sea
  1. Jan85°29°60°16°Rain on fewer than one day a week.
  2. Feb90°32°63°17°Rain on fewer than one day a week.
  3. Mar96°36°69°21°Rain on about one day a week.
  4. Apr100°38°75°24°Rain on about one day a week.
  5. May95°35°76°24°Rain on about four days a week.
  6. Jun91°33°75°24°Rain on about six days a week.
  7. Jul89°32°74°23°Rain on about six days a week.
  8. Aug88°31°74°23°Rain on about six days a week.
  9. Sep88°31°73°23°Rain on about six days a week.
  10. Oct88°31°71°22°Rain on about four days a week.
  11. Nov87°31°66°19°Rain on about two days a week.
  12. Dec84°29°61°16°Rain on about one day a week.
Each month: its typical high and low, and dots for wet days a week. Tap a month to open it.The best months

The hot season runs from March to April, with highs near 98°F and nights near 72°F. From August to January, highs are nearer 87°F. The rain comes from May to October, on about five days a week. November to April is the driest stretch, with rain on about one day a week. Daylight runs from about 11 hours in December to 13 hours in June.The hot season runs from March to April, with highs near 37°C and nights near 22°C. From August to January, highs are nearer 31°C. The rain comes from May to October, on about five days a week. November to April is the driest stretch, with rain on about one day a week. Daylight runs from about 11 hours in December to 13 hours in June.

Where Chiang Mai sits

Asia/Bangkok

this place
typical high in Januarytypical high in Februarytypical high in Marchtypical high in Apriltypical high in Maytypical high in Junetypical high in Julytypical high in Augusttypical high in Septembertypical high in Octobertypical high in Novembertypical high in December 40°F4°C95°F35°C
Latitude
18.8°Nnorthern hemisphere
Above the sea
310 mlow-lying
Sunrise, mid-JanuarySunrise, mid-FebruarySunrise, mid-MarchSunrise, mid-AprilSunrise, mid-MaySunrise, mid-JuneSunrise, mid-JulySunrise, mid-AugustSunrise, mid-SeptemberSunrise, mid-OctoberSunrise, mid-NovemberSunrise, mid-December
6:59 AM6:53 AM6:33 AM6:08 AM5:50 AM5:47 AM5:55 AM6:05 AM6:11 AM6:17 AM6:31 AM6:49 AMsets 6:06 PMsets 6:24 PMsets 6:34 PMsets 6:41 PMsets 6:50 PMsets 7:02 PMsets 7:05 PMsets 6:52 PMsets 6:27 PMsets 6:02 PMsets 5:47 PMsets 5:49 PM
Nearest of ours
Chiang Saen201 km north-east

The land around Chiang Mai, shaded by its typical high in January, the planning map's own layer.The land around Chiang Mai, shaded by its typical high in February, the planning map's own layer.The land around Chiang Mai, shaded by its typical high in March, the planning map's own layer.The land around Chiang Mai, shaded by its typical high in April, the planning map's own layer.The land around Chiang Mai, shaded by its typical high in May, the planning map's own layer.The land around Chiang Mai, shaded by its typical high in June, the planning map's own layer.The land around Chiang Mai, shaded by its typical high in July, the planning map's own layer.The land around Chiang Mai, shaded by its typical high in August, the planning map's own layer.The land around Chiang Mai, shaded by its typical high in September, the planning map's own layer.The land around Chiang Mai, shaded by its typical high in October, the planning map's own layer.The land around Chiang Mai, shaded by its typical high in November, the planning map's own layer.The land around Chiang Mai, shaded by its typical high in December, the planning map's own layer. Hover the map for the figure at that spot; tap it on a phone. Clock times are local, for the 15th.

Through the year

week by week

Temperature

Highs from 84°F in December to 100°F in April.Highs from 29°C in December to 38°C in April.

Chance of a wet day

Wettest in August (89% of days), driest in February (5%).

Cloud cover

Clearest in February (35% cover), cloudiest in June and July (86%).

Daylight

From 11h 01m in December to 13h 14m in June.

Week by week, lightly smoothed. Shading marks the seasons; the olive line, the best months. Hover or tap a week for its figures.

Month by month

°F°C

Chiang Mai, month by month: the typical high and low, wet days a week, cloud cover and daylight.
MonthTypical low to highWet days a weekCloudDaylight
JanuaryAt its best
60°16°85°29°
no days39%11h 08m
February
63°17°90°32°
no days35%11h 30m
MarchHot season
69°21°96°36°
1 day39%12h 01m
AprilHot season
75°24°100°38°
1 day56%12h 33m
MayRainy season
76°24°95°35°
4 days76%13h 01m
JuneRainy season
75°24°91°33°
6 days86%13h 14m
JulyRainy season
74°23°89°32°
6 days86%13h 08m
AugustRainy season
74°23°88°31°
6 days86%12h 44m
SeptemberRainy season
73°23°88°31°
6 days81%12h 13m
OctoberRainy season
71°22°88°31°
4 days70%11h 40m
November
66°19°87°31°
2 days54%11h 13m
DecemberAt its best
61°16°84°29°
1 day45%11h 01m

When is the best time to visit Chiang Mai?


The best months are December to January: highs near 85°F, nights near 60°F, and rain on about one day a week.The best months are December to January: highs near 29°C, nights near 16°C, and rain on about one day a week.

How we judge it: every month is scored on how close its typical high comes to the range from 70°F to 80°F, how mild its nights are, and how rarely it rains. The best months are the run of months that scores best.How we judge it: every month is scored on how close its typical high comes to the range from 21°C to 27°C, how mild its nights are, and how rarely it rains. The best months are the run of months that scores best.

Questions


What is the warmest month in Chiang Mai?

April, with highs near 100°F and lows near 75°F. The coolest is December, with highs near 84°F.April, with highs near 38°C and lows near 24°C. The coolest is December, with highs near 29°C.

When does it rain most in Chiang Mai?

August, with rain on about six days a week. February is the driest, with rain on fewer than one day a week.

How long are the days in Chiang Mai?

From about 11 hours in December to 13 hours in June.

When are the skies clearest in Chiang Mai?

February, when cloud covers about 35% of the sky on average. June and July are the cloudiest, at about 86%.

Places with a year like Chiang Mai's

by their highs, lows and wet days

Their highs, lows, wet days and cloud run closest to Chiang Mai's through the year, one place a country. “Six months apart”: their winter is Chiang Mai's summer.

Elsewhere in Thailand

All of Thailand

Typical weather, averaged over 30 years (1995–2024), from the 11 km grid square nearest Chiang Mai. Temperatures are adjusted against 66 weather stations: daytime highs read about 3.1°F cold in the source data and are raised to match, and both highs and lows are adjusted for the town's height (310 m) against the climate model's (394 m).Temperatures are adjusted against 66 weather stations: daytime highs read about 1.7°C cold in the source data and are raised to match, and both highs and lows are adjusted for the town's height (310 m) against the climate model's (394 m). Daylight is calculated from latitude. Charts are lightly smoothed week to week; the figures in the table are not. Source: Copernicus ERA5-Land reanalysis; cloud cover from NASA's MERRA-2 reanalysis, on a coarser grid of about 50 km. Contains modified Copernicus Climate Change Service information 2026; neither the European Commission nor ECMWF is responsible for any use of it. These are averages, not a forecast.

Daylight is calculated from latitude. Charts are lightly smoothed week to week; the figures in the table are not.

Source: Copernicus ERA5-Land reanalysis; cloud cover from NASA's MERRA-2 reanalysis, on a coarser grid of about 50 km. Contains modified Copernicus Climate Change Service information 2026; neither the European Commission nor ECMWF is responsible for any use of it. These are averages, not a forecast.