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Ulaanbaatar (Ulan Bator)
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Weather in Ulaanbaatar for September 2025

Your guide to Ulaanbaatar weather in September - trends and predictions

    Snow Forecast ❄️

  • Ulaanbaatar typically experiences moderate snowfall in September, with an average of 7 snowy days.
    According to Ulaanbaatar snow forecast for September 2025, no snow is expected until the end of the month.

    • Temperatures

  • Until now, September 2025 in Ulaanbaatar is cooler than usual, with temperatures averaging 13 °C, this is -2.3 °C below the typical seasonal average.

  • The forecast for the next days in Ulaanbaatar predicts temperatures to be around 15 °C, close to the historical average.

  • In general, the average temperature in Ulaanbaatar at the beginning of September is 18.1 °C. As the month progressed, temperatures tended to noticeably cool down, reaching an average of 15.1 °C by the end of September.

Average dry days
16
Dry days
Average rainy days
7
Rainy days
Average snowy days
7
Snow days
Average temperatures
13°/5°
Temperatures
Average wind speed
16 km/h
Avg max wind
Average humidity
68 %
Avg humidity

Ulaanbaatar Weather September

Move between months or click on a day
August
October
Mon.Tue.Wed.Thu.Fri.Sat.Sun.
1
Sunny
20°
2
Patchy rain possible
18°
3
Patchy rain possible
19°
4
Sunny
18°
5
Thundery outbreaks possible
18°
6
Light rain
19°
7
Patchy rain possible
15°
8
Patchy rain possible
17°
9
Light rain shower
15°
10
Light rain shower
14°
11
Sunny
14°
12
Overcast
15°
13
Light rain
10°
14
Patchy rain possible
13°
15
Mist
9°
16
Overcast
10°
17
Patchy rain possible
13°
18
Cloudy
16°
19
Sunny
15°
20
Sunny
16°
21
Partly cloudy
18°
22
Patchy rain possible
18°
23
Patchy rain possible
12°
24
Sunny
14°
25
Patchy rain possible
6°
26
Sunny
13°
27
Sunny
17°
28
Sunny
19°
29
Sunny
19°
30
Sunny
18°

Temperatures trend during September in Ulaanbaatar

See the weather trend as well as the moving average line

September weather in Ulaanbaatar day by day

Click on a date for more information
August October
Date Weather Temperatures Rain UV More
1 Sept. Sunny
Sunny
 20° /9° 0.1 mm 5
2 Sept. Patchy rain possible
Patchy rain possible
 18° /9° 3.1 mm 4
3 Sept. Patchy rain possible
Patchy rain possible
 19° /8° 0.4 mm 5
4 Sept. Sunny
Sunny
 18° /7° 0 mm 5
5 Sept. Thundery outbreaks possible
Thundery outbreaks possible
 18° /8° 0.1 mm 4
6 Sept. Light rain
Light rain
 19° /6° 1.3 mm 5
7 Sept. Patchy rain possible
Patchy rain possible
 15° /6° 0.5 mm 4
8 Sept. Patchy rain possible
Patchy rain possible
 17° /5° 0.1 mm 4
9 Sept. Light rain shower
Light rain shower
 15° /4° 1.4 mm 4
10 Sept. Light rain shower
Light rain shower
 14° /4° 0.2 mm 4
11 Sept. Sunny
Sunny
 14° /5° 0 mm 4
12 Sept. Overcast
Overcast
 15° /5° 1 mm 3
13 Sept. Light rain
Light rain
 10° /5° 5.7 mm 3
14 Sept. Patchy rain possible
Patchy rain possible
 13° /4° 1.2 mm 3
15 Sept. Mist
Mist
 9° /2° 0.4 mm 3
16 Sept. Overcast
Overcast
 10° /2° 0 mm 3
17 Sept. Patchy rain possible
Patchy rain possible
 13° /5° 0.3 mm 4
18 Sept. Cloudy
Cloudy
 16° /6° 0 mm 1
19 Sept. Sunny
Sunny
 15° /4° 0 mm 1
20 Sept. Sunny
Sunny
 16° /7° 0 mm 1.1
21 Sept. Partly cloudy
Partly cloudy
 18° /9° 0 mm 1.1
22 Sept. Patchy rain possible
Patchy rain possible
 18° /8° 2.6 mm 3
23 Sept. Patchy rain possible
Patchy rain possible
 12° /7° 1 mm 2
24 Sept. Sunny
Sunny
 14° /7° 0 mm 3
25 Sept. Patchy rain possible
Patchy rain possible
 6° /2° 1.2 mm 1
26 Sept. Sunny
Sunny
 13° /4° 0 mm 3
27 Sept. Sunny
Sunny
 17° /8° 0 mm 4
28 Sept. Sunny
Sunny
 19° /9° 0 mm 4
29 Sept. Sunny
Sunny
 19° /8° 0 mm 4
30 Sept. Sunny
Sunny
 18° /6° 0 mm 4
Next
Important Notice
Our weather forecast for Ulaanbaatar in September is based on the analysis of historical data rather than real-time forecast models. While this provides a general overview, weather conditions can change. We recommend that you check the Ulaanbaatar forecast closer to your planned date for the most up-to-date weather information.
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Ulaanbaatar in September - FAQ

What are the expected maximum and minimum temperatures in Ulaanbaatar during September?
During September, expect a variety of temperatures with highs around 13° and lows near 5°, suitable for diverse activities and preferences.
How much rainfall should be expected in Ulaanbaatar during September?
In September, Ulaanbaatar can expect light to moderate rainfall, totaling 37.9 mm across approximately 7 days. Occasional showers are possible, and planning ahead for them could be helpful.
Will it snow in Ulaanbaatar in September 2025?
Ulaanbaatar experiences an average snowfall of 7.23 cm during September, occurring over 7 days.
What are the typical wind conditions in Ulaanbaatar during September?
The average wind speed in Ulaanbaatar during September is 16 km/h, suggesting breezy to windy conditions, depending on your activities.

September rainfall patterns in Ulaanbaatar

Explore the daily rainfall trends and prepare for Ulaanbaatars September weather 💧
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Location coordinates Where is Ulaanbaatar?

Get accurate weather forecasts for Ulaanbaatar, located at latitude 47.908 and longitude 106.883. Stay updated with localized weather information tailored for Ulaanbaatar.

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