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September Weather in Karby, Sweden

Last updated: August 27, 2025

In September, the average temperature in Karby, Sweden is a mild 12°C (54°F). Expect a chill with minimums dropping to -1°C (30°F), while highs can reach a pleasant 26°C (79°F). Be prepared for some rain, as the area sees about 49 mm (1.9 in) of precipitation over 9 days. With an average humidity of 87%, it’s the perfect time to embrace the atmosphere and enjoy the season!

September Temperature in Karby

In September in Karby, the average temperature is 12°C (54°F). Maximum temperatures can reach 26°C (79°F), while the minimum can dip as low as -1°C (30°F). This variation makes it essential to pack layers for your travels to Karby during this month.

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

The chart illustrates September temperature patterns in Karby, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Karby, September typically has an average temperature of 12°C (54°F), with highs reaching up to 26°C (79°F) and lows dropping to around -1°C (30°F).
JanFebMarAprMayJunJulAugSepOctNovDec292934405162646154453731
Data source: Temperature data for Karby 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 Karby

In Karby in September, the total precipitation amount is 49 mm (1.9 in) spread over 9 days.

September Precipitation Trends in Karby

The chart displays monthly precipitation patterns in Karby, 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 Karby, September typically receives around 49 mm (1.9 inches) of precipitation spread over approximately 9 days.
JanFebMarAprMayJunJulAugSepOctNovDec343237306261737749794251
Data source: Precipitation data for September generated using information from the Copernicus Climate Change Service.
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September Humidity in Karby

In Karby in September humidity is 87%. With an average temperature of 12°C (54°F), this humidity feels like a damp embrace, making it quite uncomfortable for traveling, as the air feels heavy and can quickly sap your energy as you explore the sights.

September Average Humidity in Karby

This chart illustrates the average monthly humidity levels in Karby, 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 Karby is approximately 87%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec96%93%91%84%74%73%73%78%87%92%94%94%
Data source: Humidity data for September generated using information from the Copernicus Climate Change Service.

September UV Index in Karby

In Karby 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 Karby for better planning.

Maximum UV Index Levels in Karby for September

The chart shows the monthly maximum UV Index (UVI) for Karby 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 Karby typically reaches 4, which falls under the moderate exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec113457754211
Data source: Karby 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 Karby Compares to Other Months

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

This table compares monthly weather conditions in Karby, showing how September’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather-2°C (29°F)34 mm (1.3 inches)96%low
February Weather-2°C (29°F)32 mm (1.3 inches)93%low
March Weather1°C (34°F)37 mm (1.4 inches)91%moderate
April Weather5°C (41°F)30 mm (1.2 inches)84%moderate
May Weather10°C (51°F)62 mm (2.5 inches)74%moderate
June Weather17°C (62°F)61 mm (2.4 inches)73%high
July Weather18°C (64°F)73 mm (2.9 inches)73%high
August Weather16°C (62°F)77 mm (3.0 inches)78%moderate
September Weather12°C (54°F)49 mm (1.9 inches)87%moderate
October Weather7°C (45°F)79 mm (3.1 inches)92%low
November Weather3°C (38°F)42 mm (1.7 inches)94%low
December Weather-1°C (31°F)51 mm (2.0 inches)94%low

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