Ulaanbaatar weather in September
Monthly temperatures, rain, humidity, what to wear and what to pack — 2024–2025 historical average
Ulaanbaatar September weather at a glance
In September, Ulaanbaatar averages 9.8°C, with typical highs of 15.9°C and lows of 4.3°C. The historical average is 7 wet days and 65% humidity.
Ulaanbaatar September temperature & humidity
Ulaanbaatar September rain & wet days
Pack a compact umbrella. Keep an indoor stop available between outdoor activities.
What to wear in Ulaanbaatar in September
Wear long sleeves with a light jacket or cardigan that is easy to remove during the day. The typical day-to-night swing is about 12°C, so bring an extra layer.
- DaytimeLong sleeves and a light jacket · average high 15.9°C
- Morning & eveningInsulating coat, scarf and gloves · average low 4.3°C
- FootwearComfortable walking shoes; quick-dry footwear for rainy days.
Packing essentials
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Ulaanbaatar September sunrise & sunset times
2026 September · Local time (Asia/Ulaanbaatar)
| Date | Sunrise | Sunset | Daylight |
|---|---|---|---|
| 2026-09-01 | 06:10 | 19:34 | 13h 24m |
| 2026-09-15 | 06:29 | 19:06 | 12h 37m |
| 2026-09-30 | 06:49 | 18:34 | 11h 45m |
For sunset photos, arrive before the listed sunset time. Clouds, mountains and buildings can change when the sun becomes visible or disappears.
Calculated for the city coordinates with daylight saving applied. SunCalc · tz-lookup
Ulaanbaatar travel updates
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Ulaanbaatar travel essentials
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Best months to visit Ulaanbaatar
Bar height shows our simple weather-comfort score, not a safety rating; colour shows temperature.
September weather by year
Daily weather in 2025
Daily high and low temperatures; blue labels show precipitation
Frequently asked questions
What is Ulaanbaatar weather like in September?
In September, Ulaanbaatar averages 9.8°C, with typical highs of 15.9°C and lows of 4.3°C. The historical average is 7 wet days and 65% humidity. Our weather-comfort rating for this month is good.
Does it rain a lot in Ulaanbaatar in September?
There are about 7 wet days in September. A compact umbrella is still useful.
What should I wear in Ulaanbaatar in September?
Wear long sleeves with a light jacket or cardigan that is easy to remove during the day. The typical day-to-night swing is about 12°C, so bring an extra layer.
What are the best months to visit Ulaanbaatar?
Recent weather data rates May, June, September among the more comfortable months.
Where can I check Ulaanbaatar weather in September in real time?
Check local webcams for the view right now and a local weather service for today’s forecast. Monthly temperatures here are historical averages.
What time are sunrise and sunset in Ulaanbaatar in September?
On 2026-09-15, calculated sunrise is 06:29 and sunset is 19:06 in local time (Asia/Ulaanbaatar). Times vary by date and terrain.
Ulaanbaatar weather by month
More Greater China destinations in September
Open-Meteo (CC BY 4.0) · 2024–2025 historical data, aggregated and rounded by this site. Not a forecast or long-term climate normal. Calculation method and limitations