nomadseason

September Weather in Undur Sume, Mongolia

Last updated: August 28, 2025

In September, the average temperature in Undur Sume, Mongolia hovers around 7°C (45°F). While you might experience chilly minimums of -10°C (14°F), the mercury can rise to a balmy 24°C (76°F). Expect an average precipitation of 47 mm (1.9 in) across about 9 days, coupled with a high humidity level of 85%, making it a month of contrasts!

September Temperature in Undur Sume

In September in Undur Sume, the average temperature is 7°C (45°F), with maximums reaching 24°C (76°F) and minimums dropping as low as -10°C (14°F). Be prepared for a wide range of temperatures if you plan to travel during this time.

September Weather in Undur Sume: Daily Temperature Highs, Lows, and Averages

The chart illustrates September temperature patterns in Undur Sume, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Undur Sume, September typically has an average temperature of 7°C (45°F), with highs reaching up to 24°C (76°F) and lows dropping to around -10°C (14°F).
JanFebMarAprMayJunJulAugSepOctNovDec-9-2163445555955452810-4
Data source: Temperature data for Undur Sume generated using information from the Copernicus Climate Change Service.
Choose your preferred temperature unit
The average of daily temperatures (24 hours) calculated across all days in the month.

September Precipitation in Undur Sume

In Undur Sume in September, the precipitation amount is 47 mm (1.9 in) spread over a period of 9 days.

September Precipitation Trends in Undur Sume

The chart displays monthly precipitation patterns in Undur Sume, 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 Undur Sume, September typically receives around 47 mm (1.9 inches) of precipitation spread over approximately 9 days.
JanFebMarAprMayJunJulAugSepOctNovDec23132839891321474829112
Data source: Precipitation data for September generated using information from the Copernicus Climate Change Service.
Choose your preferred precipitation unit

September Humidity in Undur Sume

In Undur Sume in September, humidity is 85%. With an average temperature of 7°C (45°F), this humidity feels like a damp chill that clings to your skin, making outdoor activities less enjoyable and requiring extra layers to stay comfortable while traveling.

September Average Humidity in Undur Sume

This chart illustrates the average monthly humidity levels in Undur Sume, 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 Undur Sume is approximately 85%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec93%85%79%78%78%79%81%82%85%86%88%95%
Data source: Humidity data for September generated using information from the Copernicus Climate Change Service.

September UV Index in Undur Sume

In Undur Sume in September, the maximum UV index is 6, which corresponds to a high Exposure Category. The time to burn is approximately 25 minutes. To find the hourly UV index in Undur Sume, you can refer to this Hourly UV Index in Undur Sume.

Maximum UV Index Levels in Undur Sume for September

The chart shows the monthly maximum UV Index (UVI) for Undur Sume 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 Undur Sume typically reaches 6, which falls under the high exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec235689986521
Data source: Undur Sume 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 Undur Sume Compares to Other Months

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

This table compares monthly weather conditions in Undur Sume, showing how September’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather-23°C (-9°F)2 mm (0.1 inches)93%low
February Weather-19°C (-2°F)3 mm (0.1 inches)85%moderate
March Weather-9°C (16°F)13 mm (0.5 inches)78%moderate
April Weather1°C (34°F)28 mm (1.1 inches)78%high
May Weather7°C (45°F)39 mm (1.5 inches)78%very high
June Weather13°C (55°F)89 mm (3.5 inches)79%very high
July Weather15°C (59°F)132 mm (5.2 inches)81%very high
August Weather13°C (56°F)147 mm (5.8 inches)82%very high
September Weather7°C (45°F)47 mm (1.9 inches)85%high
October Weather-2°C (28°F)29 mm (1.1 inches)86%moderate
November Weather-12°C (11°F)11 mm (0.4 inches)88%low
December Weather-20°C (-4°F)1 mm (0.1 inches)95%low

Compare Undur Sume's Climate with Cities Worldwide