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September Weather in Karlskoga, Sweden

Last updated: August 27, 2025

In Karlskoga, Sweden, the average temperature in September hovers around 12°C (54°F), with daily highs reaching up to 22°C (71°F) and lows dipping to 1°C (33°F). This month sees about 83 mm (3.3 in) of precipitation over 13 days, contributing to an average humidity level of 86%. Be prepared for a mix of weather as you navigate through the season!

September Temperature in Karlskoga

In September in Karlskoga, the average temperature is 12°C (54°F). The maximum can reach 22°C (71°F) and the minimum can be as low as 1°C (33°F). This weather makes Karlskoga a delightful destination for travelers looking to enjoy mild temperatures and scenic experiences.

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

The chart illustrates September temperature patterns in Karlskoga, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Karlskoga, September typically has an average temperature of 12°C (54°F), with highs reaching up to 22°C (71°F) and lows dropping to around 1°C (33°F).
JanFebMarAprMayJunJulAugSepOctNovDec303034415161636154463832
Data source: Temperature data for Karlskoga 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 Karlskoga

In Karlskoga in September, the precipitation amount is 83 mm (3.3 in) over a span of 13 days.

September Precipitation Trends in Karlskoga

The chart displays monthly precipitation patterns in Karlskoga, 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 Karlskoga, September typically receives around 83 mm (3.3 inches) of precipitation spread over approximately 13 days.
JanFebMarAprMayJunJulAugSepOctNovDec454249316467859583845464
Data source: Precipitation data for September generated using information from the Copernicus Climate Change Service.
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September Humidity in Karlskoga

In Karlskoga in September, humidity is 86%. With an average temperature of 12°C (54°F), this humidity feels like a damp blanket wrapping around you, making outdoor activities uncomfortable and travel challenging due to the heavy, muggy atmosphere.

September Average Humidity in Karlskoga

This chart illustrates the average monthly humidity levels in Karlskoga, 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 Karlskoga is approximately 86%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec94%92%89%81%72%68%70%77%86%91%93%94%
Data source: Humidity data for September generated using information from the Copernicus Climate Change Service.

September UV Index in Karlskoga

In Karlskoga 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 Karlskoga for better planning.

Maximum UV Index Levels in Karlskoga for September

The chart shows the monthly maximum UV Index (UVI) for Karlskoga 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 Karlskoga typically reaches 4, which falls under the moderate exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec123457754211
Data source: Karlskoga 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 Karlskoga Compares to Other Months

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

This table compares monthly weather conditions in Karlskoga, showing how September’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather-1°C (31°F)45 mm (1.8 inches)94%low
February Weather-1°C (30°F)42 mm (1.6 inches)92%low
March Weather1°C (34°F)49 mm (1.9 inches)89%moderate
April Weather5°C (41°F)31 mm (1.2 inches)81%moderate
May Weather11°C (51°F)64 mm (2.5 inches)72%moderate
June Weather16°C (62°F)67 mm (2.7 inches)68%high
July Weather17°C (64°F)85 mm (3.3 inches)70%high
August Weather16°C (61°F)95 mm (3.7 inches)77%moderate
September Weather12°C (54°F)83 mm (3.3 inches)86%moderate
October Weather8°C (46°F)84 mm (3.3 inches)91%low
November Weather3°C (38°F)54 mm (2.1 inches)93%low
December Weather0°C (32°F)64 mm (2.5 inches)94%low

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