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September Weather in Eskilstuna, Sweden

Last updated: August 27, 2025

In September, the average temperature in Eskilstuna, Sweden hovers around 12°C (55°F). Daytime temperatures can vary significantly, with a minimum of -1°C (30°F) and a maximum reaching 26°C (78°F). Expect about 63 mm (2.5 in) of precipitation spread across 10 days, contributing to an average humidity of 83%. Stay prepared for a mix of weather as you explore this vibrant destination!

September Temperature in Eskilstuna

In September in Eskilstuna, the average temperature is 12°C (55°F). The maximum can reach 26°C (78°F) and the minimum can be as low as -1°C (30°F). This makes it an ideal time for travelers to enjoy a variety of outdoor activities while being prepared for a range of temperatures.

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

The chart illustrates September temperature patterns in Eskilstuna, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Eskilstuna, September typically has an average temperature of 12°C (55°F), with highs reaching up to 26°C (78°F) and lows dropping to around -1°C (30°F).
JanFebMarAprMayJunJulAugSepOctNovDec313035425263656254463832
Data source: Temperature data for Eskilstuna 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 Eskilstuna

In Eskilstuna in September, the precipitation amount is 63 mm (2.5 in) over a span of 10 days.

September Precipitation Trends in Eskilstuna

The chart displays monthly precipitation patterns in Eskilstuna, 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 Eskilstuna, September typically receives around 63 mm (2.5 inches) of precipitation spread over approximately 10 days.
JanFebMarAprMayJunJulAugSepOctNovDec363141316356668563734756
Data source: Precipitation data for September generated using information from the Copernicus Climate Change Service.
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September Humidity in Eskilstuna

In Eskilstuna in September humidity is 83%. With an average temperature of 12°C (55°F), this humidity feels like a cool, damp embrace that makes exploring the area both refreshing and slightly uncomfortable, requiring travelers to dress in layers and stay hydrated.

September Average Humidity in Eskilstuna

This chart illustrates the average monthly humidity levels in Eskilstuna, 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 Eskilstuna is approximately 83%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec91%89%88%82%71%69%67%73%83%89%91%90%
Data source: Humidity data for September generated using information from the Copernicus Climate Change Service.

September UV Index in Eskilstuna

In Eskilstuna in September, the maximum UV index reaches 4, which corresponds to a moderate Exposure Category. With a time to burn of 30 minutes, it’s important to take precautions to protect your skin. You can find more details in the Hourly UV Index in Eskilstuna for better planning.

Maximum UV Index Levels in Eskilstuna for September

The chart shows the monthly maximum UV Index (UVI) for Eskilstuna 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 Eskilstuna typically reaches 4, which falls under the moderate exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec123457764211
Data source: Eskilstuna 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 Eskilstuna Compares to Other Months

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

This table compares monthly weather conditions in Eskilstuna, showing how September’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather-1°C (31°F)36 mm (1.4 inches)91%low
February Weather-1°C (30°F)31 mm (1.2 inches)89%low
March Weather2°C (35°F)41 mm (1.6 inches)88%moderate
April Weather6°C (42°F)31 mm (1.2 inches)82%moderate
May Weather11°C (52°F)63 mm (2.5 inches)71%moderate
June Weather17°C (63°F)56 mm (2.2 inches)69%high
July Weather18°C (65°F)66 mm (2.6 inches)67%high
August Weather17°C (62°F)85 mm (3.3 inches)72%high
September Weather12°C (55°F)63 mm (2.5 inches)83%moderate
October Weather8°C (46°F)73 mm (2.9 inches)89%low
November Weather3°C (39°F)47 mm (1.9 inches)91%low
December Weather0°C (33°F)56 mm (2.2 inches)90%low

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