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September Weather in Ayan, Russian Federation

Last updated: August 27, 2025

In September, the average temperature in Ayan, Russian Federation is a mild 12°C (53°F), with minimums dropping to 4°C (40°F) and maximums reaching 21°C (69°F). Expect around 130 mm (5.1 in) of precipitation over approximately 10 days, accompanied by a high average humidity of 86%. Stay prepared for the varying conditions!

September Temperature in Ayan

In September in Ayan, the average temperature is 12°C (53°F), with maximums reaching 21°C (69°F) and minimums dropping as low as 4°C (40°F). This pleasant climate makes Ayan a great destination for travelers looking to enjoy mild weather and outdoor activities.

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

The chart illustrates September temperature patterns in Ayan, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Ayan, September typically has an average temperature of 12°C (53°F), with highs reaching up to 21°C (69°F) and lows dropping to around 4°C (40°F).
JanFebMarAprMayJunJulAugSepOctNovDec-4-0122736455558533917-1
Data source: Temperature data for Ayan 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 Ayan

In Ayan in September, the precipitation amount is 130 mm (5.1 in) over a period of 10 days.

September Precipitation Trends in Ayan

The chart displays monthly precipitation patterns in Ayan, 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 Ayan, September typically receives around 130 mm (5.1 inches) of precipitation spread over approximately 10 days.
JanFebMarAprMayJunJulAugSepOctNovDec27152053105788590130556744
Data source: Precipitation data for September generated using information from the Copernicus Climate Change Service.
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September Humidity in Ayan

In Ayan in September humidity is 86%. With an average temperature of 12°C (53°F), this humidity feels like a damp chill that seeps into your bones, making outdoor activities less enjoyable and prompting the need for warm, layered clothing while exploring the surroundings.

September Average Humidity in Ayan

This chart illustrates the average monthly humidity levels in Ayan, 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 Ayan is approximately 86%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec100%97%91%87%86%90%89%89%86%86%95%101%
Data source: Humidity data for September generated using information from the Copernicus Climate Change Service.

September UV Index in Ayan

In Ayan in September, the maximum UV index reaches 5, which corresponds to a moderate Exposure Category. Under these conditions, the estimated time to burn is approximately 30 minutes. For more details, you can check the Hourly UV Index in Ayan.

Maximum UV Index Levels in Ayan for September

The chart shows the monthly maximum UV Index (UVI) for Ayan 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 Ayan typically reaches 5, which falls under the moderate exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec123566765211
Data source: Ayan 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 Ayan Compares to Other Months

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

This table compares monthly weather conditions in Ayan, showing how September’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather-20°C (-4°F)27 mm (1.1 inches)100%low
February Weather-18°C (0°F)15 mm (0.6 inches)97%low
March Weather-11°C (13°F)20 mm (0.8 inches)91%moderate
April Weather-3°C (27°F)53 mm (2.1 inches)87%moderate
May Weather2°C (36°F)105 mm (4.1 inches)86%high
June Weather7°C (45°F)78 mm (3.1 inches)90%high
July Weather13°C (55°F)85 mm (3.3 inches)89%high
August Weather14°C (58°F)90 mm (3.6 inches)89%high
September Weather12°C (53°F)130 mm (5.1 inches)86%moderate
October Weather4°C (39°F)55 mm (2.2 inches)86%low
November Weather-8°C (17°F)67 mm (2.6 inches)95%low
December Weather-19°C (-1°F)44 mm (1.7 inches)101%low

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