Mongolia in September: where is it warmest?
In September, Ulaanbaatar averages 16 °C by day.
All destinations in September, warmest first
Long-term averages for the month: daytime high, sea, sunshine and rainy days.
| Place | Score | Air | Sun | Rain days |
|---|---|---|---|---|
| Ulaanbaatar | 83 | 16° | 8 h | 7 |
Mongolia in September: quick answers
Mongolia in September: where is it warmest?
The warmest places in September are Ulaanbaatar (16 °C).
Mongolia in September: where is the weather best?
The best holiday weather in September – warm, sunny and dry – is in Ulaanbaatar.
Mongolia month by month
Mongolia: weather & best time to visit
Climate averages 1996–2025, not a forecast. Data: Copernicus ERA5 / ERA5-Land via Open-Meteo.com (CC BY 4.0), NOAA OISST, WMO 1991–2020 (NOAA NCEI), GeoNames (CC BY 4.0). Sources & licences