Chiang Mai at a glance
- Best time
- Nov – Jan
- Warmest month
- Apr · 36°
- Sunshine a year
- 2,480 h
- Rain a year
- 1,053 mm
- Climate
- Tropical
- Time zone
- UTC+7
- Elevation
- 313 m
Climate in Chiang Mai
Chiang Mai has a tropical climate: it is warm all year round, and the seasons differ mainly in how much rain falls. April is the warmest month with average highs of 36 °C, while December is the coolest at 27 °C. With around 2,480 hours of sunshine a year, Chiang Mai is sunny; March is the sunniest month with 9.4 hours a day.
Weather in October
Holiday weather in October
Fair
Best time to visit: November – January
What is the weather like in Chiang Mai in October?
In October, Chiang Mai is hot: daytime highs average 29 °C, and even at night it stays warm at around 22 °C. Expect around 6 hours of sunshine a day. It is the rainy season: rain falls on about 16 days, totalling 125 mm. On about 11 days the thermometer climbs to 30 °C or more. The air is often humid and muggy. All in all, October is a so-so month for a holiday in Chiang Mai.
More details for October
- Daylight
- 11 h 45 min06:17 – 18:02
- UV index
- 10 · very highclear sky, noon (estimate)
- Muggy days
- 31 daysdew point 18 °C or more
- Wind
- 6 km/haverage daily peak
- Cloud cover
- 63 %on average
- Hot days
- 11 days30 °C or more
- Time zone
- UTC+7Asia/Bangkok
How the score comes together
- Temperatureweight 50 %73 %
- Sunshineweight 20 %55 %
- Few rainy daysweight 30 %16 %
Each factor is rated from 0 to 100 % and weighted for the travel style “City break”.
What to pack in October
- Sunscreen
- Sunglasses & sun hat
- Light, breathable clothes
- Water bottle – drink plenty
- Insect repellent
- Rain jacket or umbrella
Sunshine hours in Chiang Mai
Average hours of bright sunshine per day, next to the length of the day. Tap a month to select it.
In October, the sun shines for about 6.3 of 11.7 hours of daylight in Chiang Mai, 54 % of the day.
Sunshine hours count the time with bright, direct sunshine (WMO definition, estimated from model data); daylight is the time from sunrise to sunset on the 15th of the month.
Rain in Chiang Mai: rainy days and rainfall
A rainy day is a day with at least 1 mm of rain or snow; the amount is what falls in the whole month. Tap a month to select it.
In October, Chiang Mai has about 16 rainy days with 125 mm of rain in total.
Climate through the year
Long-term monthly averages. Tap a month to see its details.
Temperatures through the year
Average daytime high, night-time low and sea temperature per month.
| Month | Score | Day | Night | Sun | Rain days | Rain mm |
|---|---|---|---|---|---|---|
| JanuaryJan | 92 | 28° | 16° | 8.7 h | 1 | 7 |
| FebruaryFeb | 73 | 31° | 19° | 9.2 h | 1 | 4 |
| MarchMar | 54 | 34° | 22° | 9.4 h | 2 | 11 |
| AprilApr | 48 | 36° | 25° | 8.7 h | 5 | 28 |
| MayMay | 33 | 33° | 25° | 6.4 h | 14 | 104 |
| JuneJun | 31 | 31° | 24° | 5.0 h | 18 | 112 |
| JulyJul | 34 | 30° | 24° | 4.2 h | 22 | 176 |
| AugustAug | 38 | 29° | 24° | 4.0 h | 25 | 223 |
| SeptemberSep | 41 | 29° | 23° | 4.9 h | 24 | 230 |
| OctoberOct | 52 | 29° | 22° | 6.3 h | 16 | 125 |
| NovemberNov | 82 | 29° | 19° | 7.1 h | 5 | 26 |
| DecemberDec | 94 | 27° | 17° | 7.8 h | 1 | 7 |
Climate averages 1996–2025, not a forecast. Data: Copernicus ERA5 / ERA5-Land via Open-Meteo.com (CC BY 4.0), NOAA OISST, GeoNames (CC BY 4.0)
18.79° N, 98.98° E · 313 m · Asia/Bangkok
Best time to visit Chiang Mai
The best time to visit Chiang Mai is from November to January. For sightseeing, day trips and hiking, conditions are most comfortable in December. From March to May it can get very hot, with highs of up to 36 °C. Rain is most frequent from May to October; the wettest month is September with 230 mm.
Find your perfect month
Tell us what you like and we rate every month in Chiang Mai for you.
Your best months: December – January
Based on the climate averages; tap a month to see its details.
Which month for what?
Beach & swimming
No sea nearby
Sea from 21 °C, warm and mostly dry
Sightseeing & hiking
Dec
15–28 °C and not too much rain
Peak heat
Mar – May
Highs of 33 °C or more
Rainy months
May – Oct
12 or more rainy days
Chiang Mai month by month
The typical weather for every month at a glance.
92January28° · 9 h
In January, Chiang Mai is hot: daytime highs average 28 °C, and nights cool down to about 16 °C. The sun shines for around 9 hours a day. It hardly ever rains. All in all, January is an excellent month for a holiday in Chiang Mai.
Chiang Mai in January73February31° · 9 h
In February, Chiang Mai is hot: daytime highs average 31 °C, and nights cool down to about 19 °C. With around 9 hours of sunshine a day, there is plenty of sun. It hardly ever rains. On about 22 days the thermometer climbs to 30 °C or more. All in all, February is a good month for a holiday in Chiang Mai.
Chiang Mai in February54March34° · 9 h
In March, Chiang Mai is very hot: daytime highs average 34 °C, and even at night it stays warm at around 22 °C. With around 9 hours of sunshine a day, there is plenty of sun. Rain is rare: about 2 days bring 11 mm in total. On about 29 days the thermometer climbs to 30 °C or more. All in all, March is a so-so month for a holiday in Chiang Mai.
Chiang Mai in March48April36° · 9 h
In April, Chiang Mai is very hot: daytime highs average 36 °C, and even at night it stays warm at around 25 °C. The sun shines for around 9 hours a day. Rain is rare: about 5 days bring 28 mm in total. On about 28 days the thermometer climbs to 30 °C or more. The air is often humid and muggy. All in all, April is a so-so month for a holiday in Chiang Mai.
Chiang Mai in April33May33° · 6 h
In May, Chiang Mai is very hot: daytime highs average 33 °C, and even at night it stays warm at around 25 °C. Expect around 6 hours of sunshine a day. Rain is frequent, with about 14 rainy days and 104 mm in total. On about 24 days the thermometer climbs to 30 °C or more. The air is often humid and muggy. All in all, May is not an ideal month for a holiday in Chiang Mai.
Chiang Mai in May31June31° · 5 h
In June, Chiang Mai is hot: daytime highs average 31 °C, and even at night it stays warm at around 24 °C. Expect around 5 hours of sunshine a day. It is the rainy season: rain falls on about 18 days, totalling 112 mm. On about 20 days the thermometer climbs to 30 °C or more. The air is often humid and muggy. All in all, June is not an ideal month for a holiday in Chiang Mai.
Chiang Mai in June34July30° · 4 h
In July, Chiang Mai is hot: daytime highs average 30 °C, and even at night it stays warm at around 24 °C. Expect around 4 hours of sunshine a day. It is the rainy season: rain falls on about 22 days, totalling 176 mm. On about 17 days the thermometer climbs to 30 °C or more. The air is often humid and muggy. All in all, July is not an ideal month for a holiday in Chiang Mai.
Chiang Mai in July38August29° · 4 h
In August, Chiang Mai is hot: daytime highs average 29 °C, and even at night it stays warm at around 24 °C. Expect around 4 hours of sunshine a day. It is the rainy season: rain falls on about 25 days, totalling 223 mm. On about 12 days the thermometer climbs to 30 °C or more. The air is often humid and muggy. All in all, August is not an ideal month for a holiday in Chiang Mai.
Chiang Mai in August41September29° · 5 h
In September, Chiang Mai is hot: daytime highs average 29 °C, and even at night it stays warm at around 23 °C. Expect around 5 hours of sunshine a day. It is the rainy season: rain falls on about 24 days, totalling 230 mm. On about 12 days the thermometer climbs to 30 °C or more. The air is often humid and muggy. All in all, September is a so-so month for a holiday in Chiang Mai.
Chiang Mai in September52October29° · 6 h
In October, Chiang Mai is hot: daytime highs average 29 °C, and even at night it stays warm at around 22 °C. Expect around 6 hours of sunshine a day. It is the rainy season: rain falls on about 16 days, totalling 125 mm. On about 11 days the thermometer climbs to 30 °C or more. The air is often humid and muggy. All in all, October is a so-so month for a holiday in Chiang Mai.
Chiang Mai in October82November29° · 7 h
In November, Chiang Mai is hot: daytime highs average 29 °C, and nights cool down to about 19 °C. The sun shines for around 7 hours a day. Rain is rare: about 5 days bring 26 mm in total. On about 7 days the thermometer climbs to 30 °C or more. The air is often humid and muggy. All in all, November is an excellent month for a holiday in Chiang Mai.
Chiang Mai in November94December27° · 8 h
In December, Chiang Mai is hot: daytime highs average 27 °C, and nights cool down to about 17 °C. The sun shines for around 8 hours a day. It hardly ever rains. All in all, December is an excellent month for a holiday in Chiang Mai.
Chiang Mai in DecemberPlanning a trip to Chiang Mai
Getting there
Flying from
- Nonstop flight
- about 11 h 20 min
- Distance
- 9,010 km
- Time zone
- UTC+7
Most routes need a change of planes, which adds time.
Estimated from the straight-line distance: 30 minutes for take-off and landing plus 830 km/h cruising speed.
Frequently asked questions about Chiang Mai
When is the best time to visit Chiang Mai?
The best time to visit Chiang Mai is from November to January. That is when the holiday weather score, which combines temperature, sea, sunshine and rain, is highest.
What is the warmest month in Chiang Mai?
April is the warmest month, with average highs of 36 °C and nights around 25 °C. December is the coolest month at 27 °C.
When does it rain most in Chiang Mai?
Rain is most frequent from May to October; the wettest month is September with 230 mm. The driest month is February with 4 mm.
How many hours of sunshine does Chiang Mai get?
Chiang Mai gets around 2,480 hours of sunshine a year. The sunniest month is March with 9.4 hours a day; in August there are 4.0 hours a day.
What time zone is Chiang Mai in?
Chiang Mai uses the time zone Asia/Bangkok, at UTC+7 all year.
How long is the flight from London to Chiang Mai?
A nonstop flight from London to Chiang Mai takes about 11 h 20 min, for a straight-line distance of about 9,010 km. Most routes need a change of planes, which adds time.
Near Chiang Mai
Other destinations close by.