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September Weather in Brevik, Sweden

Last updated: August 27, 2025

In Brevik, Sweden, the average temperature in September is a mild 13°C (56°F). Expect lows of around 3°C (38°F) and highs reaching up to 22°C (72°F). Weather-wise, 52 mm (2.0 in) of precipitation is anticipated over about 10 days, contributing to an average humidity of 85%.

September Temperature in Brevik

In September, in Brevik, the average temperature is 13°C (56°F). Maximum temperatures can reach 22°C (72°F), while minimums can dip as low as 3°C (38°F). This mild climate makes Brevik an ideal destination for travelers looking to enjoy comfortable outdoor activities.

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

The chart illustrates September temperature patterns in Brevik, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Brevik, September typically has an average temperature of 13°C (56°F), with highs reaching up to 22°C (72°F) and lows dropping to around 3°C (38°F).
JanFebMarAprMayJunJulAugSepOctNovDec333235404959636356484135
Data source: Temperature data for Brevik 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 Brevik

In Brevik in September, the precipitation amount is 52 mm (2.0 in) over the course of 10 days.

September Precipitation Trends in Brevik

The chart displays monthly precipitation patterns in Brevik, 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 Brevik, September typically receives around 52 mm (2.0 inches) of precipitation spread over approximately 10 days.
JanFebMarAprMayJunJulAugSepOctNovDec433844255044556852765170
Data source: Precipitation data for September generated using information from the Copernicus Climate Change Service.
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September Humidity in Brevik

In Brevik in September humidity is 85%. With an average temperature of 13°C (56°F), this humidity feels like a damp chill that wraps around you, making outdoor activities feel heavier and less enjoyable, as layers of clothing cling to the skin and breath becomes visible in the moist air.

September Average Humidity in Brevik

This chart illustrates the average monthly humidity levels in Brevik, 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 Brevik is approximately 85%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec90%88%89%85%77%76%74%77%85%89%90%88%
Data source: Humidity data for September generated using information from the Copernicus Climate Change Service.

September UV Index in Brevik

In Brevik 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 Brevik for better planning.

Maximum UV Index Levels in Brevik for September

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

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

This table compares monthly weather conditions in Brevik, showing how September’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather0°C (33°F)43 mm (1.7 inches)90%low
February Weather0°C (32°F)38 mm (1.5 inches)88%low
March Weather2°C (35°F)44 mm (1.7 inches)89%moderate
April Weather5°C (40°F)25 mm (1.0 inches)85%moderate
May Weather9°C (49°F)50 mm (2.0 inches)77%moderate
June Weather15°C (60°F)44 mm (1.7 inches)76%high
July Weather17°C (64°F)55 mm (2.1 inches)74%high
August Weather17°C (63°F)68 mm (2.7 inches)77%moderate
September Weather13°C (56°F)52 mm (2.0 inches)85%moderate
October Weather9°C (48°F)76 mm (3.0 inches)89%low
November Weather5°C (41°F)50 mm (2.0 inches)90%low
December Weather2°C (35°F)70 mm (2.8 inches)87%low

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