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September Weather in Mattsund, Sweden

Last updated: August 27, 2025

In September, the average temperature in Mattsund, Sweden hovers around 10°C (51°F). Expect a chilly bite with minimums dipping to 1°C (34°F) and maximums reaching 18°C (65°F). Precipitation can be frequent, totaling about 68 mm (2.7 in) over 11 days, contributing to an average humidity of 88%. Prepare for a damp and cool climate!

September Temperature in Mattsund

In September in Mattsund, the average temperature is 10°C (51°F). Maximums can reach 18°C (65°F), while minimums can dip as low as 1°C (34°F). Be prepared for mild days and chilly nights, perfect for layering and enjoying outdoor adventures.

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

The chart illustrates September temperature patterns in Mattsund, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Mattsund, September typically has an average temperature of 10°C (51°F), with highs reaching up to 18°C (65°F) and lows dropping to around 1°C (34°F).
JanFebMarAprMayJunJulAugSepOctNovDec201826334356625950403125
Data source: Temperature data for Mattsund 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 Mattsund

In Mattsund in September, the total precipitation amount is 68 mm (2.7 in) spread over a duration of 11 days.

September Precipitation Trends in Mattsund

The chart displays monthly precipitation patterns in Mattsund, 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 Mattsund, September typically receives around 68 mm (2.7 inches) of precipitation spread over approximately 11 days.
JanFebMarAprMayJunJulAugSepOctNovDec534042284455687768975972
Data source: Precipitation data for September generated using information from the Copernicus Climate Change Service.
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September Humidity in Mattsund

In Mattsund in September, humidity is 88%. With an average temperature of 10°C (51°F), this humidity feels like a thick blanket of moisture enveloping you, making every step feel heavier and leaving you yearning for a refreshing breeze as you navigate the streets.

September Average Humidity in Mattsund

This chart illustrates the average monthly humidity levels in Mattsund, 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 Mattsund is approximately 88%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec97%95%90%84%82%78%82%84%88%92%93%96%
Data source: Humidity data for September generated using information from the Copernicus Climate Change Service.

September UV Index in Mattsund

In Mattsund 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 Mattsund, you can check the information here.

Maximum UV Index Levels in Mattsund for September

The chart shows the monthly maximum UV Index (UVI) for Mattsund 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 Mattsund typically reaches 3, which falls under the moderate exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec112446543211
Data source: Mattsund 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 Mattsund Compares to Other Months

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

This table compares monthly weather conditions in Mattsund, showing how September’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather-7°C (20°F)53 mm (2.1 inches)97%low
February Weather-8°C (19°F)40 mm (1.6 inches)95%low
March Weather-4°C (26°F)42 mm (1.7 inches)90%low
April Weather1°C (33°F)28 mm (1.1 inches)84%moderate
May Weather6°C (43°F)44 mm (1.7 inches)81%moderate
June Weather13°C (56°F)55 mm (2.1 inches)78%high
July Weather17°C (62°F)68 mm (2.7 inches)82%moderate
August Weather15°C (59°F)77 mm (3.0 inches)84%moderate
September Weather10°C (51°F)68 mm (2.7 inches)88%moderate
October Weather4°C (40°F)96 mm (3.8 inches)92%low
November Weather-1°C (31°F)59 mm (2.3 inches)93%low
December Weather-4°C (25°F)72 mm (2.8 inches)96%low

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