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September Weather in Bayantsagaan, Mongolia

Last updated: August 28, 2025

In September, the average temperature in Bayantsagaan, Mongolia hovers around 8°C (47°F), with a wide range that can dip to a chilly -8°C (17°F) and peak at a warm 27°C (82°F). Expect about 44 mm (1.7 in) of precipitation spread over 7 days, paired with an average humidity level of 78%. Embrace the season's variability!

September Temperature in Bayantsagaan

In September in Bayantsagaan, the average temperature is 8°C (47°F). Maximums can reach 27°C (82°F), while minimums can dip as low as -8°C (17°F). This fluctuating climate makes Bayantsagaan a destination where travelers should be prepared for a wide range of weather conditions.

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

The chart illustrates September temperature patterns in Bayantsagaan, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Bayantsagaan, September typically has an average temperature of 8°C (47°F), with highs reaching up to 27°C (82°F) and lows dropping to around -8°C (17°F).
JanFebMarAprMayJunJulAugSepOctNovDec-252237495961574730162
Data source: Temperature data for Bayantsagaan 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 Bayantsagaan

In Bayantsagaan in September, the precipitation amount is 44 mm (1.7 in) spread over a duration of 7 days.

September Precipitation Trends in Bayantsagaan

The chart displays monthly precipitation patterns in Bayantsagaan, 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 Bayantsagaan, September typically receives around 44 mm (1.7 inches) of precipitation spread over approximately 7 days.
JanFebMarAprMayJunJulAugSepOctNovDec3711253869125122442583
Data source: Precipitation data for September generated using information from the Copernicus Climate Change Service.
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September Humidity in Bayantsagaan

In Bayantsagaan in September, humidity is 78%. With an average temperature of 8°C (47°F), this humidity feels like a chilly embrace, making travel invigorating yet damp, as the cool air wraps around you, emphasizing the need for layers to stay comfortable while exploring.

September Average Humidity in Bayantsagaan

This chart illustrates the average monthly humidity levels in Bayantsagaan, 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 Bayantsagaan is approximately 78%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec85%74%72%74%68%73%79%77%78%76%78%86%
Data source: Humidity data for September generated using information from the Copernicus Climate Change Service.

September UV Index in Bayantsagaan

In Bayantsagaan 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 Bayantsagaan, you can refer to this Hourly UV Index in Bayantsagaan.

Maximum UV Index Levels in Bayantsagaan for September

The chart shows the monthly maximum UV Index (UVI) for Bayantsagaan 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 Bayantsagaan typically reaches 6, which falls under the high exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec235799996521
Data source: Bayantsagaan 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 Bayantsagaan Compares to Other Months

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

This table compares monthly weather conditions in Bayantsagaan, showing how September’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather-19°C (-2°F)3 mm (0.1 inches)85%low
February Weather-15°C (5°F)7 mm (0.3 inches)74%moderate
March Weather-5°C (23°F)11 mm (0.4 inches)72%moderate
April Weather3°C (37°F)25 mm (1.0 inches)74%high
May Weather9°C (49°F)38 mm (1.5 inches)68%very high
June Weather15°C (59°F)69 mm (2.7 inches)73%very high
July Weather16°C (61°F)125 mm (4.9 inches)79%very high
August Weather14°C (57°F)122 mm (4.8 inches)77%very high
September Weather8°C (47°F)44 mm (1.7 inches)78%high
October Weather-1°C (30°F)25 mm (1.0 inches)76%moderate
November Weather-9°C (16°F)8 mm (0.3 inches)78%low
December Weather-17°C (3°F)3 mm (0.1 inches)86%low

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