Ulaanbaatar weather in August
August in Ulaanbaatar: nice, a little rain, with clean air — an excellent time to visit.
#3 of 12 months in Ulaanbaatar · #151 of 604 destinations to visit in August · comfort 87/100 (tier A)
Updated June 2026 · climate normals from ERA5 reanalysis
Ulaanbaatar climate normals — August
| Daytime high | 21°C / 69°F | 😎 nice |
|---|---|---|
| Nighttime low | 10°C / 49°F | |
| Feels like (high) | 19°C / 66°F | |
| Rainfall | 77 mm / 3 in | 🌦 some rain |
| Rainy days | 13 days | |
| Humidity | 70% | 💧 humid |
| Dew point | 9°C / 49°F | |
| Sunshine | 10.4 h/day | |
| Daylight | 14.2 h | |
| Wind | 15 km/h / 9 mph | |
| Air quality (US AQI) | 38 | 🍃 good |
Monthly averages from ERA5 reanalysis. AQI is the mean US Air Quality Index for the month.
Where is Ulaanbaatar?
Loading map…
Ulaanbaatar in August — FAQ
- Is August a good time to visit Ulaanbaatar?
- August in Ulaanbaatar: nice, a little rain, with clean air — an excellent time to visit. It ranks #3 of 12 months for Ulaanbaatar on SeasonMap's comfort score (87/100).
- What is the weather like in Ulaanbaatar in August?
- In August, Ulaanbaatar averages a daily high of 20.7°C and a low of 9.7°C, with about 76.6 mm of rain over roughly 12.8 rainy days.
- What is the air quality in Ulaanbaatar in August?
- Ulaanbaatar has a mean US Air Quality Index of about 38 in August.