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Weather in Ulaanbaatar for September 2026

Your guide to Ulaanbaatar weather in September - trends and predictions

    Snow Forecast ❄️

  • With an average of 3 snowy days, Ulaanbaatar usually enjoys a light touch of snow in September.
    According to Ulaanbaatar snow forecast for September 2026, no snow is expected at the beginning of the month.

    • Temperatures

  • The forecast for the first days of September 2026 in Ulaanbaatar predicts temperatures to be around 18 °C, close to the historical average.

  • In general, the average temperature in Ulaanbaatar at the beginning of September is 19.6 °C. As the month progressed, temperatures tended to significantly cool down, reaching an average of 11 °C by the end of September.

    • Rain 🌧️

  • With an average of 5 rainy days, Ulaanbaatar experiences minimal rainfall in September.

Average dry days
22
Dry days
Average rainy days
5
Rainy days
Average snowy days
3
Snow days
Average temperatures
13°/5°
Temperatures
Average wind speed
16 km/h
Avg max wind
Average humidity
65 %
Avg humidity

Ulaanbaatar Weather September

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

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 Snow More
1 Sept. Overcast
Overcast
 25° /11° 0 mm 0 cm
2 Sept. Sunny
Sunny
 17° /7° 0.1 mm 0 cm
3 Sept. Sunny
Sunny
 20° /6° 0 mm 0 cm
4 Sept. Sunny
Sunny
 24° /12° 0 mm 0 cm
5 Sept. Overcast
Overcast
 15° /9° 2.8 mm 0 cm
6 Sept. Overcast
Overcast
 17° /8° 0.6 mm 0 cm
7 Sept. Overcast
Overcast
 19° /9° 0 mm 0 cm
8 Sept. Patchy rain possible
Patchy rain possible
 18° /8° 4 mm 0 cm
9 Sept. Light rain shower
Light rain shower
 15° /4° 1.4 mm 0 cm
10 Sept. Light rain shower
Light rain shower
 14° /4° 0.2 mm 0 cm
11 Sept. Sunny
Sunny
 14° /5° 0 mm 0 cm
12 Sept. Overcast
Overcast
 15° /5° 1 mm 0 cm
13 Sept. Light rain
Light rain
 10° /5° 5.7 mm 0 cm
14 Sept. Patchy rain possible
Patchy rain possible
 13° /4° 1.2 mm 0 cm
15 Sept. Mist
Mist
 9° /2° 0.4 mm 0 cm
16 Sept. Overcast
Overcast
 10° /2° 0 mm 0 cm
17 Sept. Sunny
Sunny
 13° /4° 0.2 mm 0 cm
18 Sept. Thundery outbreaks possible
Thundery outbreaks possible
 14° /3° 0.2 mm 0.2 cm
19 Sept. Thundery outbreaks possible
Thundery outbreaks possible
 10° /2° 0.5 mm 0.4 cm
20 Sept. Sunny
Sunny
 12° /3° 0.1 mm 0.1 cm
21 Sept. Sunny
Sunny
 14° /3° 0 mm 0 cm
22 Sept. Overcast
Overcast
 14° /5° 4.7 mm 0 cm
23 Sept. Light rain shower
Light rain shower
 10° /3° 4.9 mm 0.1 cm
24 Sept. Sunny
Sunny
 13° /3° 0 mm 0 cm
25 Sept. Patchy light rain with thunder
Patchy light rain with thunder
 14° /4° 1.3 mm 0.2 cm
26 Sept. Patchy rain possible
Patchy rain possible
 13° /4° 0.2 mm 0 cm
27 Sept. Cloudy
Cloudy
 11° /4° 3.2 mm 0 cm
28 Sept. Moderate or heavy snow showers
Moderate or heavy snow showers
 10° /2° 4.2 mm 2.6 cm
29 Sept. Patchy rain possible
Patchy rain possible
 8° /1° 1.4 mm 1.1 cm
30 Sept. Sunny
Sunny
 8° /0° 0.1 mm 0.1 cm
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 36.5 mm across approximately 5 days. Occasional showers are possible, and planning ahead for them could be helpful.

Will it snow in Ulaanbaatar in September 2026?
Ulaanbaatar experiences an average snowfall of 4.8 cm during September, occurring over 3 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.

Ulaanbaatar snow forecast September 2026

Track daily snowfall levels and discover Ulaanbaatar’s snowy potential this September ❄️
On average, Ulaanbaatar sees 3 snowy days during September, with approximately 4.8 cm of total snowfall.

September rainfall patterns in Ulaanbaatar

Explore the daily rainfall trends and prepare for Ulaanbaatars September weather 💧
Typically, Ulaanbaatar has 5 rainy days in September with a total of 36.5 mm of rainfall.

UV exposure in Ulaanbaatar during September

Stay informed about UV levels for safe outdoor activities throughout the month of September ☀️
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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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