The best time to visit Chiang Mai is between October and March, the most comfortable stretch of the year on these averages.
Chiang Mai is a warm-year climate with a drier stretch and a wetter one, not four seasons in the European sense. The hot months are the outdoor months until the rain takes over. Chiang Mai is a city in Thailand. This page is about Chiang Mai, not a country average.
Most visitors come in the drier stretch and treat the wet months as a different trip: slower days, heavier skies, still warm. The monthly table on this page still owns the averages. This layer is how Chiang Mai actually feels.
Part of Thailand weather.
The drier stretch in Chiang Mai is when outdoor days are the default. January, February, March and April sit on that side of the year. Heat is still the point. Rain is not gone, it is no longer in charge.
Chiang Mai in Thailand in these weeks is a warm-weather trip: early starts, shade at midday, evenings outside. It is not a European spring with a light jumper.
Read Chiang Mai in this stretch as its own climate, not as a generic holiday season copied from another destination.
The wetter stretch in Chiang Mai is still warm. May, June, July and August sit on that side of the year. Days can be heavy. Showers arrive, dump, and often leave the air stickier than before.
This is a slower trip, not a cancelled one. Build indoor hours into the afternoon. Do not treat Chiang Mai as closed. Treat it as a place where the sky does more of the talking than it does in the dry months.
Read Chiang Mai in this stretch as its own climate, not as a generic holiday season copied from another destination.
TemperatureRainfall
Every figure below is a 1991–2020 climate normal for Chiang Mai, in °C and °F. Open a month for what to expect and what to pack.
| Month | Average | Rainfall |
|---|---|---|
| January | 23°C / 73°F | 8 mm |
| February | 25°C / 77°F | 9 mm |
| March | 28°C / 82°F | 22 mm |
| April | 30°C / 86°F | 56 mm |
| May | 29°C / 85°F | 164 mm |
| June | 29°C / 84°F | 111 mm |
| July | 28°C / 83°F | 153 mm |
| August | 28°C / 82°F | 234 mm |
| September | 28°C / 82°F | 218 mm |
| October | 27°C / 81°F | 118 mm |
| November | 26°C / 78°F | 39 mm |
| December | 23°C / 74°F | 14 mm |
Dates are a starting point for October.
What to read before you book.
Now pick a month.
Climate averages for Chiang Mai, 1991–2020.
The best time to visit Chiang Mai is between October and March, the most comfortable stretch of the year on these averages.
April is the hottest month, with an average around 30°C.
August is the wettest month, with about 234 mm of rain.
Chiang Mai has a distinct rainy season from July to September, peaking in August at about 234 mm. The dry season runs from October to June.
January is the coolest month, averaging 23°C (73°F) against 30°C (86°F) in April.
This page does not show today's weather. It is a 1991–2020 climate normal from Meteostat — a long-run average of what each month is usually like, which is what you want when booking ahead. For today or the coming week, check a live forecast.
No. These are 1991–2020 climate normals from Meteostat, not a live forecast. Actual weather in any given week can differ.
