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September Weather in Grimsas, Sweden

Last updated: August 27, 2025

In September, the average temperature in Grimsas, Sweden is a mild 12°C (54°F), with a range that can dip to a chilly -2°C (30°F) or rise to a warm 24°C (76°F). Expect 93 mm (3.7 in) of precipitation over approximately 14 days, accompanied by an average humidity level of 82%. 🌧️

September Temperature in Grimsas

In September in Grimsas, the average temperature is 12°C (54°F), with maximums reaching up to 24°C (76°F) and minimums plummeting to -2°C (30°F). Be prepared for a range of weather conditions during your travels.

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

The chart illustrates September temperature patterns in Grimsas, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Grimsas, September typically has an average temperature of 12°C (54°F), with highs reaching up to 24°C (76°F) and lows dropping to around -2°C (30°F).
JanFebMarAprMayJunJulAugSepOctNovDec323135425161626054463933
Data source: Temperature data for Grimsas 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 Grimsas

In Grimsas, in September, the precipitation amount is 93 mm (3.7 in) over the course of 14 days.

September Precipitation Trends in Grimsas

The chart displays monthly precipitation patterns in Grimsas, 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 Grimsas, September typically receives around 93 mm (3.7 inches) of precipitation spread over approximately 14 days.
JanFebMarAprMayJunJulAugSepOctNovDec5673664174869510993926074
Data source: Precipitation data for September generated using information from the Copernicus Climate Change Service.
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September Humidity in Grimsas

In Grimsas in September humidity is 82%. With an average temperature of 12°C (54°F), this humidity feels like a heavy blanket wrapping around you, making every step feel sluggish and sweat-inducing, which can be quite uncomfortable for traveling.

September Average Humidity in Grimsas

This chart illustrates the average monthly humidity levels in Grimsas, 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 Grimsas is approximately 82%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec92%91%89%82%70%65%65%71%82%90%92%91%
Data source: Humidity data for September generated using information from the Copernicus Climate Change Service.

September UV Index in Grimsas

In Grimsas in September, the maximum UV index reaches 5, which corresponds to a moderate Exposure Category. Under these conditions, the estimated time to burn is approximately 30 minutes. For more details, you can check the Hourly UV Index in Grimsas.

Maximum UV Index Levels in Grimsas for September

The chart shows the monthly maximum UV Index (UVI) for Grimsas 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 Grimsas typically reaches 5, which falls under the moderate exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec123567765211
Data source: Grimsas 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 Grimsas Compares to Other Months

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

This table compares monthly weather conditions in Grimsas, showing how September’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather0°C (32°F)56 mm (2.2 inches)92%low
February Weather0°C (32°F)73 mm (2.9 inches)91%low
March Weather2°C (35°F)66 mm (2.6 inches)89%moderate
April Weather6°C (43°F)41 mm (1.6 inches)82%moderate
May Weather11°C (52°F)74 mm (2.9 inches)70%high
June Weather16°C (61°F)86 mm (3.4 inches)65%high
July Weather17°C (62°F)95 mm (3.7 inches)65%high
August Weather16°C (60°F)109 mm (4.3 inches)71%high
September Weather12°C (54°F)93 mm (3.7 inches)82%moderate
October Weather8°C (46°F)92 mm (3.6 inches)90%low
November Weather4°C (39°F)60 mm (2.3 inches)92%low
December Weather1°C (34°F)74 mm (2.9 inches)91%low

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