Chiang Mai weather in August
August in Chiang Mai: sweltering, soaked, with clean air — a fair time to visit.
#12 of 12 months in Chiang Mai · #541 of 604 destinations to visit in August · comfort 52/100 (tier D)
Updated June 2026 · climate normals from ERA5 reanalysis
Chiang Mai climate normals — August
| Daytime high | 30°C / 85°F | 🔥 sweltering |
|---|---|---|
| Nighttime low | 24°C / 75°F | |
| Feels like (high) | 35°C / 95°F | |
| Rainfall | 243 mm / 9.6 in | ⛈ soaked |
| Rainy days | 24 days | |
| Humidity | 84% | 💦 very humid |
| Dew point | 23°C / 74°F | |
| Sunshine | 7.2 h/day | |
| Daylight | 12.7 h | |
| Wind | 8 km/h / 5 mph | |
| Air quality (US AQI) | 45 | 🍃 good |
Monthly averages from ERA5 reanalysis. AQI is the mean US Air Quality Index for the month.
Where is Chiang Mai?
Loading map…
Chiang Mai in August — FAQ
- Is August a good time to visit Chiang Mai?
- August in Chiang Mai: sweltering, soaked, with clean air — a fair time to visit. It ranks #12 of 12 months for Chiang Mai on SeasonMap's comfort score (52/100).
- What is the weather like in Chiang Mai in August?
- In August, Chiang Mai averages a daily high of 29.7°C and a low of 23.7°C, with about 243.3 mm of rain over roughly 23.8 rainy days.
- What is the air quality in Chiang Mai in August?
- Chiang Mai has a mean US Air Quality Index of about 45 in August.