Mongolia (Ulan Bator)
September
Weather in Mongolia for September 2025
Your guide to Mongolia weather in September - trends and predictions
Mongolia typically experiences moderate snowfall in September, with an average of 7 snowy days.
According to Mongolia snow forecast for September 2025, no snow is expected until the end of the month.Until now, September 2025 in Mongolia 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 Mongolia predicts temperatures to be around 15 °C, close to the historical average.
In general, the average temperature in Mongolia 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.
Snow Forecast ❄️
Temperatures
16
Dry days
7
Rainy days
7
Snow days
13°/5°
Temperatures
16 km/h
Avg max wind
68 %
Avg humidity
Mongolia Weather September
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What’s the Weather Like in Mongolia This September?
Discover the average temperatures and weather trends across Mongolia’s cities this September.
Temperatures trend during September in Mongolia
See the weather trend as well as the moving average line
September weather in Mongolia day by day
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| Date | Weather | Temperatures | Rain | UV | More |
|---|---|---|---|---|---|
| 1 Sept. |  Sunny | 20° /9° | 0.1 mm | 5 | |
| 2 Sept. |  Patchy rain possible | 18° /9° | 3.1 mm | 4 | |
| 3 Sept. | Patchy rain possible | 19° /8° | 0.4 mm | 5 | |
| 4 Sept. | Sunny | 18° /7° | 0 mm | 5 | |
| 5 Sept. |  Thundery outbreaks possible | 18° /8° | 0.1 mm | 4 | |
| 6 Sept. |  Light rain | 19° /6° | 1.3 mm | 5 | |
| 7 Sept. | Patchy rain possible | 15° /6° | 0.5 mm | 4 | |
| 8 Sept. | Patchy rain possible | 17° /5° | 0.1 mm | 4 | |
| 9 Sept. | Light rain shower | 15° /4° | 1.4 mm | 4 | |
| 10 Sept. | Light rain shower | 14° /4° | 0.2 mm | 4 | |
| 11 Sept. | Sunny | 14° /5° | 0 mm | 4 | |
| 12 Sept. |  Overcast | 15° /5° | 1 mm | 3 | |
| 13 Sept. | Light rain | 10° /5° | 5.7 mm | 3 | |
| 14 Sept. | Patchy rain possible | 13° /4° | 1.2 mm | 3 | |
| 15 Sept. |  Mist | 9° /2° | 0.4 mm | 3 | |
| 16 Sept. | Overcast | 10° /2° | 0 mm | 3 | |
| 17 Sept. | Patchy rain possible | 13° /5° | 0.3 mm | 4 | |
| 18 Sept. |  Cloudy | 16° /6° | 0 mm | 1 | |
| 19 Sept. | Sunny | 15° /4° | 0 mm | 1 | |
| 20 Sept. | Sunny | 16° /7° | 0 mm | 1.1 | |
| 21 Sept. |  Partly cloudy | 18° /9° | 0 mm | 1.1 | |
| 22 Sept. | Patchy rain possible | 18° /8° | 2.6 mm | 3 | |
| 23 Sept. | Patchy rain possible | 12° /7° | 1 mm | 2 | |
| 24 Sept. | Sunny | 14° /7° | 0 mm | 3 | |
| 25 Sept. | Patchy rain possible | 6° /2° | 1.2 mm | 1 | |
| 26 Sept. | Sunny | 13° /4° | 0 mm | 3 | |
| 27 Sept. | Sunny | 17° /8° | 0 mm | 4 | |
| 28 Sept. | Sunny | 19° /9° | 0 mm | 4 | |
| 29 Sept. | Sunny | 19° /8° | 0 mm | 4 | |
| 30 Sept. | Sunny | 18° /6° | 0 mm | 4 | |
| Next | |||||
Important Notice
Our weather forecast for Mongolia 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 Mongolia forecast closer to your planned date for the most up-to-date weather information.
Change Month
Mongolia in September - FAQ
What are the expected maximum and minimum temperatures in Mongolia 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 Mongolia during September?
In September, Mongolia 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 Mongolia in September 2025?
Mongolia experiences an average snowfall of 7.23 cm during September, occurring over 7 days.
What are the typical wind conditions in Mongolia during September?
The average wind speed in Mongolia during September is 16 km/h, suggesting breezy to windy conditions, depending on your activities.
September rainfall patterns in Mongolia
Explore the daily rainfall trends and prepare for Mongolias September weather 💧
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