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September Weather in Uliastay, Mongolia

Last updated: August 28, 2025

In September, the average temperature in Uliastay, Mongolia hovers around 8°C (47°F). Expect temperatures to swing from a chilly -9°C (17°F) to a warm 26°C (79°F). During this month, you might encounter about 26 mm (1.0 in) of precipitation over 5 days, while the average humidity sits at a comfortable 59%.

September Temperature in Uliastay

In September in Uliastay, the average temperature is 8°C (47°F). The maximum can reach 26°C (79°F), and the minimum can be as low as -9°C (17°F). Be prepared for a wide range of temperatures while traveling, ensuring you pack layers to stay comfortable.

September Weather in Uliastay: Daily Temperature Highs, Lows, and Averages

The chart illustrates September temperature patterns in Uliastay, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Uliastay, September typically has an average temperature of 8°C (47°F), with highs reaching up to 26°C (79°F) and lows dropping to around -9°C (17°F).
JanFebMarAprMayJunJulAugSepOctNovDec-9-2163548586257462810-6
Data source: Temperature data for Uliastay 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 Uliastay

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

September Precipitation Trends in Uliastay

The chart displays monthly precipitation patterns in Uliastay, 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 Uliastay, September typically receives around 26 mm (1.0 inches) of precipitation spread over approximately 5 days.
JanFebMarAprMayJunJulAugSepOctNovDec471020193162642618116
Data source: Precipitation data for September generated using information from the Copernicus Climate Change Service.
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September Humidity in Uliastay

In Uliastay in September humidity is 59%. With an average temperature of 8°C (47°F), this humidity feels like a brisk awakening, making it essential to dress in layers to stay comfortable while exploring the sights.

September Average Humidity in Uliastay

This chart illustrates the average monthly humidity levels in Uliastay, 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 Uliastay is approximately 59%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec98%94%88%74%50%48%49%54%59%67%86%96%
Data source: Humidity data for September generated using information from the Copernicus Climate Change Service.

September UV Index in Uliastay

In Uliastay 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 Uliastay.

Maximum UV Index Levels in Uliastay for September

The chart shows the monthly maximum UV Index (UVI) for Uliastay 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 Uliastay typically reaches 7, which falls under the high exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec236710101097532
Data source: Uliastay 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 Uliastay Compares to Other Months

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

This table compares monthly weather conditions in Uliastay, showing how September’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather-23°C (-9°F)4 mm (0.1 inches)98%low
February Weather-19°C (-2°F)7 mm (0.3 inches)94%moderate
March Weather-9°C (16°F)10 mm (0.4 inches)88%high
April Weather2°C (36°F)20 mm (0.8 inches)74%high
May Weather9°C (48°F)19 mm (0.8 inches)50%very high
June Weather15°C (59°F)31 mm (1.2 inches)48%very high
July Weather17°C (62°F)62 mm (2.5 inches)49%very high
August Weather14°C (57°F)64 mm (2.5 inches)54%very high
September Weather8°C (47°F)26 mm (1.0 inches)59%high
October Weather-2°C (28°F)18 mm (0.7 inches)67%moderate
November Weather-12°C (10°F)10 mm (0.4 inches)86%moderate
December Weather-21°C (-6°F)6 mm (0.2 inches)96%low

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