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September Weather in Ulaan-Ereg, Mongolia

Last updated: August 28, 2025

In September, the average temperature in Ulaan-Ereg, Mongolia hovers around 12°C (54°F), with a brisk minimum dropping to -7°C (20°F) and a warm maximum reaching up to 31°C (87°F). Expect about 26 mm (1.0 in) of precipitation spread over 5 days, accompanied by an average humidity of 67%, making it a month of varied weather conditions.

September Temperature in Ulaan-Ereg

In September in Ulaan-Ereg, the average temperature is 12°C (54°F), with a maximum that can reach 31°C (87°F) and a minimum that can drop as low as -7°C (20°F). This weather variation means travelers should be prepared for both warm days and chilly nights.

September Weather in Ulaan-Ereg: Daily Temperature Highs, Lows, and Averages

The chart illustrates September temperature patterns in Ulaan-Ereg, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Ulaan-Ereg, September typically has an average temperature of 12°C (54°F), with highs reaching up to 31°C (87°F) and lows dropping to around -7°C (20°F).
JanFebMarAprMayJunJulAugSepOctNovDec-442641546670645435170
Data source: Temperature data for Ulaan-Ereg generated using information from the Copernicus Climate Change Service.
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The average of daily temperatures (24 hours) calculated across all days in the month.

September Precipitation in Ulaan-Ereg

In Ulaan-Ereg in September, the precipitation amount is 26 mm (1.0 in) over the course of 5 days.

September Precipitation Trends in Ulaan-Ereg

The chart displays monthly precipitation patterns in Ulaan-Ereg, with values for each month alongside September’s data, which is highlighted for easy comparison. It shows the amount of precipitation, providing insights into how September’s conditions compare to those of other months. In Ulaan-Ereg, September typically receives around 26 mm (1.0 inches) of precipitation spread over approximately 5 days.
JanFebMarAprMayJunJulAugSepOctNovDec233916275674261283
Data source: Precipitation data for September generated using information from the Copernicus Climate Change Service.
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September Humidity in Ulaan-Ereg

In Ulaan-Ereg in September, humidity is 67%. With an average temperature of 12°C (54°F), this humidity feels like a cool, damp blanket wrapping around you, making it essential to layer your clothing for comfort while exploring.

September Average Humidity in Ulaan-Ereg

This chart illustrates the average monthly humidity levels in Ulaan-Ereg, with September’s data highlighted for easy comparison. It shows the fluctuation in humidity throughout the year, helping you understand how conditions vary by season. In September, average humidity in Ulaan-Ereg is approximately 67%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec90%80%64%59%52%53%59%61%67%67%67%88%
Data source: Humidity data for September generated using information from the Copernicus Climate Change Service.

September UV Index in Ulaan-Ereg

In Ulaan-Ereg in September, the maximum UV index is 7, which corresponds to the high Exposure Category. This means that the time to burn is approximately 25 minutes. For more detailed information, you can check the Hourly UV Index in Ulaan-Ereg.

Maximum UV Index Levels in Ulaan-Ereg for September

The chart shows the monthly maximum UV Index (UVI) for Ulaan-Ereg in September, representing the highest UV radiation level. The UVI measures the intensity of ultraviolet radiation from the sun, indicating the potential risk of sunburn and UV-related health issues. In September, the maximum UV index in Ulaan-Ereg typically reaches 7, which falls under the high exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec2357910997432
Data source: Ulaan-Ereg September UVI data generated using information from the Copernicus Climate Change Service.

UV Risk Categories

  •  Extreme (11+): Avoid the sun, stay in shade.
  •  Very High (8-10): Limit sun exposure.
  •  High (6-7): Use SPF 30+ and protective clothing.
  •  Moderate (3-5): Midday shade recommended.
  •  Low (0-2): No protection needed.

How September Weather in Ulaan-Ereg Compares to Other Months

Weather in Ulaan-Ereg varies notably across the year, with each month offering distinct climate conditions. This page compares September’s weather to other months in Ulaan-Ereg, focusing on differences in temperature, rainfall, humidity, and UV levels.

This table compares monthly weather conditions in Ulaan-Ereg, showing how September’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather-20°C (-4°F)2 mm (0.1 inches)90%low
February Weather-16°C (4°F)3 mm (0.1 inches)80%moderate
March Weather-3°C (26°F)3 mm (0.1 inches)64%moderate
April Weather5°C (42°F)8 mm (0.3 inches)59%high
May Weather12°C (55°F)16 mm (0.6 inches)52%very high
June Weather19°C (67°F)27 mm (1.0 inches)53%very high
July Weather21°C (71°F)56 mm (2.2 inches)59%very high
August Weather18°C (64°F)74 mm (2.9 inches)61%very high
September Weather12°C (54°F)26 mm (1.0 inches)67%high
October Weather2°C (35°F)12 mm (0.5 inches)67%moderate
November Weather-9°C (17°F)8 mm (0.3 inches)67%moderate
December Weather-18°C (1°F)3 mm (0.1 inches)88%low

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