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September Weather in Sunne, Sweden

Last updated: August 27, 2025

In September, the average temperature in Sunne, Sweden hovers around 12°C (54°F), making it a mild yet interesting time of year. Expect the temperature to dip as low as 1°C (33°F) and rise up to a warm 23°C (74°F). During this period, 84 mm (3.3 in) of precipitation typically falls over approximately 12 days, contributing to an average humidity level of 86%. Stay prepared for the mix of cool and damp weather!

September Temperature in Sunne

In September in Sunne, the average temperature is 12°C (54°F). The maximum can reach 23°C (74°F), and the minimum can be as low as 1°C (33°F). It's a great time to explore Sunne, as the mild weather allows for outdoor activities and sightseeing.

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

The chart illustrates September temperature patterns in Sunne, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Sunne, September typically has an average temperature of 12°C (54°F), with highs reaching up to 23°C (74°F) and lows dropping to around 1°C (33°F).
JanFebMarAprMayJunJulAugSepOctNovDec292934415161636053453630
Data source: Temperature data for Sunne 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 Sunne

In Sunne in September, the precipitation amount is 84 mm (3.3 in) over a span of 12 days.

September Precipitation Trends in Sunne

The chart displays monthly precipitation patterns in Sunne, 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 Sunne, September typically receives around 84 mm (3.3 inches) of precipitation spread over approximately 12 days.
JanFebMarAprMayJunJulAugSepOctNovDec504951367174879884967476
Data source: Precipitation data for September generated using information from the Copernicus Climate Change Service.
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September Humidity in Sunne

In Sunne 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 Sunne

This chart illustrates the average monthly humidity levels in Sunne, 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 Sunne 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 Sunne

In Sunne 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 Sunne for better planning.

Maximum UV Index Levels in Sunne for September

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

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

This table compares monthly weather conditions in Sunne, showing how September’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather-2°C (29°F)50 mm (2.0 inches)94%low
February Weather-2°C (29°F)49 mm (1.9 inches)92%low
March Weather1°C (34°F)51 mm (2.0 inches)89%moderate
April Weather5°C (41°F)36 mm (1.4 inches)81%moderate
May Weather10°C (51°F)71 mm (2.8 inches)72%moderate
June Weather16°C (61°F)74 mm (2.9 inches)68%high
July Weather17°C (64°F)87 mm (3.4 inches)70%high
August Weather16°C (61°F)98 mm (3.8 inches)77%moderate
September Weather12°C (54°F)84 mm (3.3 inches)86%moderate
October Weather7°C (45°F)96 mm (3.8 inches)91%low
November Weather2°C (37°F)74 mm (2.9 inches)93%low
December Weather-1°C (30°F)76 mm (3.0 inches)94%low

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