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September Weather in Bollstabruk, Sweden

Last updated: August 27, 2025

In September, the average temperature in Bollstabruk, Sweden hovers around 10°C (50°F). Daily variations can see the minimum dip to -4°C (25°F) and the maximum reach up to 22°C (71°F). Expect about 67 mm (2.7 in) of precipitation spread over 12 days, contributing to a notably high average humidity of 87%.

September Temperature in Bollstabruk

In September in Bollstabruk, the average temperature is 10°C (50°F), with maximums reaching 22°C (71°F) and minimums dropping to -4°C (25°F). Be prepared for a range of temperatures and pack accordingly to enjoy your trip comfortably.

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

The chart illustrates September temperature patterns in Bollstabruk, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Bollstabruk, September typically has an average temperature of 10°C (50°F), with highs reaching up to 22°C (71°F) and lows dropping to around -4°C (25°F).
JanFebMarAprMayJunJulAugSepOctNovDec222128374758615849403025
Data source: Temperature data for Bollstabruk 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 Bollstabruk

In Bollstabruk in September, the precipitation amount is 67 mm (2.7 in) over the course of 12 days.

September Precipitation Trends in Bollstabruk

The chart displays monthly precipitation patterns in Bollstabruk, 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 Bollstabruk, September typically receives around 67 mm (2.7 inches) of precipitation spread over approximately 12 days.
JanFebMarAprMayJunJulAugSepOctNovDec564748334363858268915484
Data source: Precipitation data for September generated using information from the Copernicus Climate Change Service.
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September Humidity in Bollstabruk

In Bollstabruk in September humidity is 87%. With an average temperature of 10°C (50°F), this humidity feels like a heavy cloak wrapping around you, making every step feel laborious and the air thick with moisture, challenging your comfort while traveling.

September Average Humidity in Bollstabruk

This chart illustrates the average monthly humidity levels in Bollstabruk, 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 Bollstabruk is approximately 87%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec95%94%91%85%80%75%80%84%87%92%92%94%
Data source: Humidity data for September generated using information from the Copernicus Climate Change Service.

September UV Index in Bollstabruk

In Bollstabruk in September, the maximum UV index is 3, which corresponds to a moderate Exposure Category. The time to burn is approximately 30 minutes. For more details on the hourly UV index in Bollstabruk, you can check the information here.

Maximum UV Index Levels in Bollstabruk for September

The chart shows the monthly maximum UV Index (UVI) for Bollstabruk 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 Bollstabruk typically reaches 3, which falls under the moderate exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec113456653211
Data source: Bollstabruk 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 Bollstabruk Compares to Other Months

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

This table compares monthly weather conditions in Bollstabruk, showing how September’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather-6°C (22°F)56 mm (2.2 inches)95%low
February Weather-6°C (22°F)47 mm (1.8 inches)94%low
March Weather-2°C (29°F)48 mm (1.9 inches)91%moderate
April Weather3°C (37°F)33 mm (1.3 inches)85%moderate
May Weather8°C (47°F)43 mm (1.7 inches)79%moderate
June Weather14°C (58°F)63 mm (2.5 inches)75%high
July Weather16°C (61°F)85 mm (3.3 inches)80%high
August Weather14°C (58°F)82 mm (3.2 inches)84%moderate
September Weather10°C (50°F)67 mm (2.7 inches)87%moderate
October Weather4°C (40°F)91 mm (3.6 inches)92%low
November Weather-1°C (31°F)54 mm (2.1 inches)92%low
December Weather-4°C (25°F)84 mm (3.3 inches)94%low

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