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September Weather in Arzamas, Russian Federation

Last updated: August 27, 2025

In September, the average temperature in Arzamas, Russian Federation is a mild 12°C (54°F). Expect temperatures to range from a chilly -2°C (30°F) to a warm 30°C (86°F). During this month, 43 mm (1.7 in) of precipitation is likely to fall across 9 days, contributing to an average humidity of 83%. Stay prepared for varying conditions!

September Temperature in Arzamas

In September in Arzamas, the average temperature is 12°C (54°F). Maximums can reach 30°C (86°F), and minimums can be as low as -2°C (30°F). Be prepared for a range of weather conditions during your visit!

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

The chart illustrates September temperature patterns in Arzamas, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Arzamas, September typically has an average temperature of 12°C (54°F), with highs reaching up to 30°C (86°F) and lows dropping to around -2°C (30°F).
JanFebMarAprMayJunJulAugSepOctNovDec182028425563676454443022
Data source: Temperature data for Arzamas 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 Arzamas

In Arzamas in September, the precipitation amount reaches 43 mm (1.7 in) over the course of 9 days.

September Precipitation Trends in Arzamas

The chart displays monthly precipitation patterns in Arzamas, 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 Arzamas, September typically receives around 43 mm (1.7 inches) of precipitation spread over approximately 9 days.
JanFebMarAprMayJunJulAugSepOctNovDec405129555157765343544847
Data source: Precipitation data for September generated using information from the Copernicus Climate Change Service.
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September Humidity in Arzamas

In Arzamas in September humidity is 83%. With an average temperature of 12°C (54°F), this humidity feels like a heavy blanket wrapping around you, making outdoor exploration feel sticky and uncomfortable, which can dampen the excitement of traveling.

September Average Humidity in Arzamas

This chart illustrates the average monthly humidity levels in Arzamas, 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 Arzamas is approximately 83%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec99%96%91%78%67%65%69%66%83%89%94%91%
Data source: Humidity data for September generated using information from the Copernicus Climate Change Service.

September UV Index in Arzamas

In Arzamas 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 Arzamas.

Maximum UV Index Levels in Arzamas for September

The chart shows the monthly maximum UV Index (UVI) for Arzamas 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 Arzamas typically reaches 5, which falls under the moderate exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec124567765311
Data source: Arzamas 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 Arzamas Compares to Other Months

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

This table compares monthly weather conditions in Arzamas, showing how September’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather-8°C (18°F)40 mm (1.6 inches)99%low
February Weather-7°C (20°F)51 mm (2.0 inches)96%low
March Weather-2°C (28°F)29 mm (1.1 inches)91%moderate
April Weather6°C (43°F)55 mm (2.2 inches)78%moderate
May Weather13°C (56°F)51 mm (2.0 inches)67%high
June Weather17°C (63°F)57 mm (2.2 inches)65%high
July Weather19°C (67°F)76 mm (3.0 inches)69%high
August Weather18°C (64°F)53 mm (2.1 inches)66%high
September Weather12°C (54°F)43 mm (1.7 inches)83%moderate
October Weather6°C (44°F)54 mm (2.1 inches)89%moderate
November Weather-1°C (31°F)48 mm (1.9 inches)94%low
December Weather-6°C (22°F)47 mm (1.8 inches)91%low

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