Weather in September 2025

Ulaanbaatar weather in September 2025

°C °F

The average weather in Ulaanbaatar in September

The weather in Ulaanbaatar in September is very cold with temperatures between 4°C and 13°C, warm clothes are a must.

You can expect about 3 to 8 days of rain in Ulaanbaatar during the month of September. It’s a good idea to bring along your umbrella so that you don’t get caught in poor weather.

You can expect a few days of snow in Ulaanbaatar during September. It’s important to get out your snow boots and warm mittens to stay warm while you explore Ulaanbaatar.

Our weather forecast can give you a great sense of what weather to expect in Ulaanbaatar in September 2025.

If you’re planning to visit Ulaanbaatar in the near future, we highly recommend that you review the 14 day weather forecast for Ulaanbaatar before you arrive.

Temperatures
13° / 4°
Rainy Days
4
Snowy Days
3
Dry Days
23
Rainfall
46
mm
Sun Hours
11.4
Hrs

Explore the weather in Ulaanbaatar in other months

Ulaanbaatar annual weather

Month Temperatures Rainy Days Dry Days Snowy Days Rainfall Weather More details
January -17° / -26° 1 21 9 3 mm
Awful
February -14° / -25° 3 17 9 6 mm
Awful
March -5° / -15° 4 16 11 15 mm
Awful
April 6° / -3° 4 18 9 26 mm
Awful
May 13° / 3° 4 21 6 47 mm
Bad
June 20° / 10° 8 21 1 84 mm
Ok
July 22° / 13° 8 23 0 114 mm
Ok
August 20° / 10° 8 23 0 99 mm
Ok
September 13° / 4° 4 23 3 46 mm
Bad
October 3° / -4° 3 20 8 19 mm
Awful
November -8° / -16° 3 16 11 13 mm
Awful
December -15° / -24° 2 19 10 4 mm
Awful

Weather in Ulaanbaatar in September - FAQ

What is the average temperature in Ulaanbaatar in September?
The average temperature in Ulaanbaatar in September is 4/13° C.
What is the chance of rain in Ulaanbaatar in September?
On average, there are 4 rainy days in Ulaanbaatar during September.
Weather wise, is September a good time to visit Ulaanbaatar?
The weather in Ulaanbaatar in September is bad.
Can it snow in Ulaanbaatar in September?
On average, there are 3 snowy days in Ulaanbaatar in September.
More about the weather in Ulaanbaatar