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Weather in Ulaanbaatar for September 2025

Your guide to Ulaanbaatar weather in September - trends and predictions
  • In general, the average temperature in Ulaanbaatar at the beginning of September is 19.9 °C. As the month progressed, temperatures tended to significantly cool down, reaching an average of 8.9 °C by the end of September.

  • Ulaanbaatar sees moderate rainfall in September, averaging 9 rainy days.

  • With an average of 5 snowy days, Ulaanbaatar enjoys a light touch of snow in September.

  • Is September a good time to visit Ulaanbaatar? check out the best time to travel to Ulaanbaatar page.

  • New! Chat with our AI weatherman - it’s amazing and free.
Average dry days
16
Dry days
Average rainy days
9
Rainy days
Average snowy days
5
Snow days
Average temperatures
13°/5°
Temperatures
Average wind speed
15 km/h
Avg max wind
Average humidity
71 %
Avg humidity

Ulaanbaatar in September average weather

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Temperatures trend during September in Ulaanbaatar

See the weather trend as well as the moving average line
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September weather day by day

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Date Weather Temperatures Rain Snow More
1 Sept. Sunny
Sunny
19° /9° 0 mm 0 cm
2 Sept. Patchy light rain with thunder
Patchy light rain with thunder
20° /10° 4 mm 0 cm
3 Sept. Patchy rain possible
Patchy rain possible
20° /7° 0.6 mm 0 cm
4 Sept. Sunny
Sunny
18° /9° 0 mm 0 cm
5 Sept. Thundery outbreaks possible
Thundery outbreaks possible
22° /11° 0.1 mm 0 cm
6 Sept. Light rain
Light rain
23° /9° 1.2 mm 0 cm
7 Sept. Patchy rain possible
Patchy rain possible
17° /8° 0.7 mm 0 cm
8 Sept. Thundery outbreaks possible
Thundery outbreaks possible
20° /5° 0.1 mm 0 cm
9 Sept. Light rain shower
Light rain shower
15° /4° 2.1 mm 0 cm
10 Sept. Light rain shower
Light rain shower
12° /4° 0.3 mm 0 cm
11 Sept. Sunny
Sunny
14° /5° 0 mm 0 cm
12 Sept. Overcast
Overcast
14° /5° 0 mm 0 cm
13 Sept. Partly cloudy
Partly cloudy
12° /7° 2.4 mm 0 cm
14 Sept. Mist
Mist
14° /5° 1.8 mm 0 cm
15 Sept. Mist
Mist
10° /3° 0.7 mm 0 cm
16 Sept. Overcast
Overcast
10° /4° 0.1 mm 0 cm
17 Sept. Patchy rain possible
Patchy rain possible
13° /5° 0.3 mm 0 cm
18 Sept. Thundery outbreaks possible
Thundery outbreaks possible
15° /2° 0.3 mm 0.3 cm
19 Sept. Thundery outbreaks possible
Thundery outbreaks possible
8° /1° 0.8 mm 0.6 cm
20 Sept. Sunny
Sunny
11° /2° 0.2 mm 0.1 cm
21 Sept. Sunny
Sunny
12° /3° 0 mm 0 cm
22 Sept. Overcast
Overcast
14° /5° 1.3 mm 0 cm
23 Sept. Light rain shower
Light rain shower
11° /4° 5.4 mm 0.2 cm
24 Sept. Patchy rain possible
Patchy rain possible
13° /3° 0 mm 0 cm
25 Sept. Patchy light rain with thunder
Patchy light rain with thunder
14° /3° 1.9 mm 0.3 cm
26 Sept. Patchy rain possible
Patchy rain possible
11° /3° 0.3 mm 0 cm
27 Sept. Cloudy
Cloudy
9° /3° 4.8 mm 0 cm
28 Sept. Moderate or heavy snow showers
Moderate or heavy snow showers
6° /0° 6.2 mm 4 cm
29 Sept. Patchy rain possible
Patchy rain possible
4° /-2° 2 mm 1.7 cm
30 Sept. Sunny
Sunny
5° /-2° 0.2 mm 0.1 cm
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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.

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 43.2 mm across approximately 9 days. Occasional showers are possible, and planning ahead for them could be helpful.
Is snowfall common in Ulaanbaatar during September?
Ulaanbaatar experiences an average snowfall of 4 cm during September, occurring over 5 days, which may interest winter sports enthusiasts.
What are the typical wind conditions in Ulaanbaatar during September?
The average wind speed in Ulaanbaatar during September is 15 km/h, suggesting breezy to windy conditions, depending on your activities.

What to pack to Ulaanbaatar in September?

As you prepare for your trip to Ulaanbaatar in September, it's important to consider the typical weather patterns for the time of year. Below is a carefully tailored packing list to ensure that your time in Ulaanbaatar, during September, is comfortable and enjoyable, regardless of the weather conditions.

  • Clothing
    • Warm Clothing: Sweaters, hoodies, long pants
    • Rain Gear: Lightweight, waterproof clothing
  • Footwear
    • Waterproof Shoes
  • Accessories
    • Scarves: To protect you from the cold wind
    • Gloves/Mittens: Essential for cold weather
    • Warm Hats: Warm hats for insulation in cold weather
    • Umbrellas/Raincoats: For rainy days

September rainfall patterns in Ulaanbaatar

Explore the daily rainfall trends and prepare for Ulaanbaatars September weather 💧

September snowfall in Ulaanbaatar

Track daily snowfall levels and discover Ulaanbaatar’s snowy potential this September ❄️

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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