Ulaanbaatar in september: average Weather, Temperature and Climate
Weather in Ulaanbaatar in september 2025
The weather in Ulaanbaatar in the month of september comes from statistical datas on the past years. You can view the weather statistics for all the month, but also by using the tabs for the beginning, the middle and the end of the month.
Average weather throughout september
tolerable weather 82.4cm
Weather at 6am
56°F
Clear/Sunny
57% of time
23%
9%
4%
Weather at 12pm
49°F
Clear/Sunny
59% of time
21%
10%
6%
Weather at 6pm
43°F
Clear/Sunny
49% of time
29%
9%
6%
Weather at 3am
52°F
59%
28%
6%
5%
Evolution of daily average temperature and precipitation in Ulaanbaatar in september
These charts show the evolution of average minimum/maximum temperatures as well as average daily precipitation volume in Ulaanbaatar in september.
The climate of Ulaanbaatar in september is tolerable
the weather in Ulaanbaatar in september is rather dry (with 1.8in of precipitation over 3 days). This is better than the previous month since in august it receives an average of 3.9in of precipitation over 7 days.
The climate is fairly fresh in that locality this month, but it is bearable when dressing cosy. The thermometer averaged maximum of 58°F. In the morning the temperature drops to 45°F. Thus, the mean temperature average in september in Ulaanbaatar is 52°F. These temperatures are far removed from those records observed in Ulaanbaatar in the month of september with a maximum record of 81°F in 2010 and a minimum record of 20°F in 2010. You can expect to have about 3 days with temperatures below 32°F, or 10% of time.
On this month of september, day length in Ulaanbaatar is generally 12:36. Sunrise is at 06:29 and sets at 19:05.
With a correct climate, the month of september is okay (but not the best) to go there in Mongolia.
Ulaanbaatar: another month?
If you can push the dates of your trip to Ulaanbaatar forward, the month of october has a better weather forecast than september. more information
September: another location in Mongolia?
If you want to go to Mongolia in september, there are destinations with better weather than Ulaanbaatar:
In september, Choybalsan, Dalanzadgad, Khovd, Ovoot, Saynshand and Undurkhaan have good weather.
Seasonal average climate and temperature of Ulaanbaatar in september
Check below seasonal norms These datas are compiled from the weather statements earlier years of september.
| September | |||||
| Outside temperature | |||||
| Average temperature | 52°F | ||||
| Highest temperature | 58°F | ||||
| Lowest temperature | 45°F | ||||
| Highest record temperature | 81°F (2010) | ||||
| Lowest record temperature | 20°F (2010) | ||||
| Number of days at +65°F | 7 day(s) (23%) | ||||
| Number of days at -32°F | 3 day(s) (10%) | ||||
| Wind | |||||
| Wind speed | 19km/h | ||||
| Wind temperature | 43°F | ||||
| Precipitation (rainfall) | |||||
| Rainfall | 1.8in | ||||
| Number of days with rainfall | 3 day(s) (10%) | ||||
| Record daily rainfall | 1.9in (2020) | ||||
| Snowfall | 82.4cm | ||||
| Other climate data | |||||
| Humidity | 68% | ||||
| Visibility | 9.55km | ||||
| Cloud cover | 24% | ||||
| UV index | 4 | ||||
| Daily sunshine hours | 12 | ||||
| Sunrise and sunset | |||||
| Time of sunrise | 06:29 | ||||
| Time of sunset | 19:05 | ||||
| Length of day | 12:36 | ||||
| Our opinion about the weather in september | |||||
| Our opinion at whereandwhen.net | tolerable | ||||
How was the weather last september?
Here is the day by day recorded weather in Ulaanbaatar in september 2024:
52°F to 65°F
58°F to 70°F
47°F to 59°F
47°F to 58°F
52°F to 67°F
54°F to 70°F
61°F to 74°F
43°F to 68°F
45°F to 52°F
49°F to 61°F
50°F to 67°F
45°F to 59°F
45°F to 47°F
49°F to 58°F
43°F to 58°F
47°F to 59°F
45°F to 65°F
41°F to 58°F
36°F to 43°F
38°F to 47°F
41°F to 54°F
47°F to 61°F
49°F to 61°F
47°F to 58°F
49°F to 61°F
47°F to 63°F
41°F to 45°F
32°F to 40°F
31°F to 36°F
25°F to 32°F
Map: other cities in Mongolia in september
Cities near Ulaanbaatar:
| Darkhan in september | tolerable weather |
| Choyr in september | good weather |
| Erdenet in september | tolerable weather |
| Sühbaatar in september | tolerable weather |
| Undurkhaan in september | good weather |
| Arvayheer in september | tolerable weather |
| Javhlant in september | good weather |
| Tsetserleg in september | tolerable weather |
| Saynshand in september | good weather |
| Baruun-Urt in september | good weather |
| Ulaan-Uul in september | good weather |
| Dalanzadgad in september | good weather |
Click over cities on the map for information about the weather in september.
Ulaanbaatar
perfect weather
good
tolerable
bad
very bad
Weather data for Ulaanbaatar in september:
Weather data for Ulaanbaatar for september are derived from an average of the weather forecast since 2009 in Ulaanbaatar. There is a margin of error and these forecasts are to be considered as general information only. The weather in Ulaanbaatar can vary slightly from year to year, but this data should limit surprises. So you can pack your bags or check for the best time in year to go to Ulaanbaatar.