September weather forecast and climate
Ulaanbaatar, Mongolia

The valley city of Ulaanbaatar in Mongolia, viewed from above, with the distant view of the mountain ranges
The valley city of Ulaanbaatar in Mongolia, viewed from above, with the distant view of the mountain ranges

What is the temperature in September in Ulaanbaatar?

The average high-temperature, in September, is 16.7°C (62.1°F), while the average low-temperature is 3.6°C (38.5°F).

How many days does it rain in September in Ulaanbaatar?

In Ulaanbaatar, Mongolia, in September, it is raining for 8 days, with typically 27mm (1.1") of accumulated precipitation.

How many days does it snow in September in Ulaanbaatar?

In September, snow falls for 2 days.
Average temperature in September - Ulaanbaatar, Mongolia
  • Average high temperature in September: 16.7°C

The warmest month (with the highest average high temperature) is July (24.5°C).
The month with the lowest average high temperature is January (-15.6°C).

  • Average low temperature in September: 3.6°C

The month with the highest average low temperature is July (12.9°C).
The coldest month (with the lowest average low temperature) is January (-25.9°C).

Average humidity in September - Ulaanbaatar, Mongolia
  • Average humidity in September: 59%

Months with the highest relative humidity are January and December (78%).
The month with the lowest relative humidity is May (46%).

Average rainfall in September - Ulaanbaatar, Mongolia
  • Average rainfall in September: 27mm

The wettest month (with the highest rainfall) is August (70mm).
The driest month (with the lowest rainfall) is January (2mm).

Average rainfall days in September - Ulaanbaatar, Mongolia
  • Average rainfall days in September: 8 days

The month with the highest number of rainy days is July (16 days).
The month with the lowest number of rainy days is February (0 days).

Average snowfall days in September - Ulaanbaatar, Mongolia
  • Average snowfall days in September: 2 days

The month with the highest number of snowfall days is December (10 days).
The month with the lowest number of snowfall days is July (0.2 days).

Average daylight in September / Average sunshine in September - Ulaanbaatar, Mongolia
  • Average daylight in September: 12.6h

The month with the longest days is June (Average daylight: 16h).
The month with shortest days is December (Average daylight: 8.5h).

  • Average sunshine in September: 8.2h

The month with most sunshine is May (Average sunshine: 9.7h).
The month with least sunshine is December (Average sunshine: 5h).

Average UV index in September - Ulaanbaatar, Mongolia
  • Average UV index in September: 5

Months with the highest UV index are June and July (UV index 8).
Months with the lowest UV index are January, November and December (UV index 1).

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