Ulan Bator Weather in September
15.9°C high · 1.1°C low · 33 mm rain · 6.5h sun
Sep is a warm month in Ulan Bator — not peak season, but a good time to avoid crowds.
September at a glance
| Metric | Value |
|---|---|
| Average high | 15.9°C |
| Average low | 1.1°C |
| Rainfall | 33 mm |
| Sunshine | 6.5 hours/day |
| Daylight | 12.3 hours |
What to pack in September
Pack a jacket and layers for Ulan Bator in September.
Ulan Bator weather by month
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Frequently asked questions
What is the weather in Ulan Bator in September?
Highs of 15.9°C and lows of 1.1°C, with about 33 mm of rain and 6.5 hours of sunshine per day.
Is September a good time to visit Ulan Bator?
Sep is a warm month in Ulan Bator — not peak season, but a good time to avoid crowds.
What to do in Ulan Bator · Best time to visit Ulan Bator
Climate data: Open-Meteo Historical (ERA5), 1991–2020. CC BY 4.0.