Chiang Mai weather in August
Temperature, sea and sunshine in August: long-term averages from 30 years of weather data, not a forecast.
Holiday weather in August
Poor
Best time to visit: November – January
What is the weather like in Chiang Mai in August?
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.
August compared
How the weather changes from July to September. Tap a month to open it.
| JulyJul | AugustAug | SeptemberSep | |
|---|---|---|---|
| Score | 34 | 38 | 41 |
| Day | 30° | 29° | 29° |
| Night | 24° | 24° | 23° |
| Sun | 4 h | 4 h | 5 h |
| Rain days | 22 | 25 | 24 |
More details for August
- Daylight
- 12 h 47 min06:05 – 18:52
- UV index
- 13 · extremeclear sky, noon (estimate)
- Muggy days
- 31 daysdew point 18 °C or more
- Wind
- 7 km/haverage daily peak
- Cloud cover
- 93 %on average
- Hot days
- 12 days30 °C or more
- Time zone
- UTC+7Asia/Bangkok
How the score comes together
- Temperatureweight 50 %70 %
- Sunshineweight 20 %17 %
- Few rainy daysweight 30 %0 %
Each factor is rated from 0 to 100 % and weighted for the travel style “City break”.
What to pack in August
- Sunscreen
- Sunglasses & sun hat
- Light, breathable clothes
- Water bottle – drink plenty
- Insect repellent
- Rain jacket or umbrella
Chiang Mai in August: quick answers
Is Chiang Mai hot in August?
Yes. In August, Chiang Mai is hot: daytime highs average 29 °C and nights stay around 24 °C. On about 12 days the thermometer climbs to 30 °C or more.
Does it rain much in Chiang Mai in August?
It rains often – on about 25 days, adding up to 223 mm.
Chiang Mai month by month
The whole year in Chiang MaiAll destinations: Thailand
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)