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September Weather in Sunnansjo, Sweden

Last updated: August 27, 2025

In September, the average temperature in Sunnansjo, Sweden hovers around 9°C (48°F). This month can bring a chill, with minimum temperatures dropping to a brisk -5°C (24°F), while warmer days may reach up to 21°C (70°F). Expect about 67 mm (2.6 in) of precipitation over 11 days, contributing to the average humidity of 87%. Be prepared for a mix of weather as you enjoy the beauty of this season!

September Temperature in Sunnansjo

In September in Sunnansjo, the average temperature is 9°C (48°F) with a maximum that can reach 21°C (70°F) and a minimum that can drop to as low as -5°C (24°F). Be sure to pack layers to stay comfortable during your travels.

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

The chart illustrates September temperature patterns in Sunnansjo, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Sunnansjo, September typically has an average temperature of 9°C (48°F), with highs reaching up to 21°C (70°F) and lows dropping to around -5°C (24°F).
JanFebMarAprMayJunJulAugSepOctNovDec191926354657615748382823
Data source: Temperature data for Sunnansjo 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 Sunnansjo

In Sunnansjo in September, the total precipitation amount is 67 mm (2.6 in) over the course of 11 days.

September Precipitation Trends in Sunnansjo

The chart displays monthly precipitation patterns in Sunnansjo, 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 Sunnansjo, September typically receives around 67 mm (2.6 inches) of precipitation spread over approximately 11 days.
JanFebMarAprMayJunJulAugSepOctNovDec534342285366738067875878
Data source: Precipitation data for September generated using information from the Copernicus Climate Change Service.
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September Humidity in Sunnansjo

In Sunnansjo in September humidity is 87%. With an average temperature of 9°C (48°F), this humidity feels like a damp chill that seeps into your bones, making outdoor exploration uncomfortable and requiring extra layers and careful planning for any activities.

September Average Humidity in Sunnansjo

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

In Sunnansjo 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 Sunnansjo, you can check the information here.

Maximum UV Index Levels in Sunnansjo for September

The chart shows the monthly maximum UV Index (UVI) for Sunnansjo 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 Sunnansjo typically reaches 3, which falls under the moderate exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec112456653211
Data source: Sunnansjo 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 Sunnansjo Compares to Other Months

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

This table compares monthly weather conditions in Sunnansjo, showing how September’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather-7°C (19°F)53 mm (2.1 inches)95%low
February Weather-7°C (19°F)42 mm (1.7 inches)94%low
March Weather-3°C (27°F)42 mm (1.7 inches)91%low
April Weather1°C (35°F)28 mm (1.1 inches)85%moderate
May Weather8°C (46°F)53 mm (2.1 inches)79%moderate
June Weather14°C (57°F)66 mm (2.6 inches)75%high
July Weather16°C (61°F)73 mm (2.9 inches)80%high
August Weather14°C (57°F)80 mm (3.1 inches)84%moderate
September Weather9°C (48°F)67 mm (2.6 inches)87%moderate
October Weather3°C (38°F)87 mm (3.4 inches)92%low
November Weather-2°C (29°F)58 mm (2.3 inches)92%low
December Weather-5°C (23°F)78 mm (3.1 inches)94%low

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