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September Weather in Trelleborg, Sweden

Last updated: August 27, 2025

In Trelleborg, Sweden, the average temperature in September hovers around 14°C (58°F), with a range from a chilly 2°C (36°F) to a warm 26°C (79°F). Expect about 67 mm (2.6 in) of precipitation spread over 11 days, contributing to a notably high average humidity of 82%.

September Temperature in Trelleborg

In September in Trelleborg, the average temperature is 14°C (58°F), with maximums reaching 26°C (79°F) and minimums dropping as low as 2°C (36°F). This variation in temperature makes Trelleborg an ideal destination for travelers seeking both warmth and cooler escapes in the same trip.

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

The chart illustrates September temperature patterns in Trelleborg, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Trelleborg, September typically has an average temperature of 14°C (58°F), with highs reaching up to 26°C (79°F) and lows dropping to around 2°C (36°F).
JanFebMarAprMayJunJulAugSepOctNovDec363638455363646458514438
Data source: Temperature data for Trelleborg 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 Trelleborg

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

September Precipitation Trends in Trelleborg

The chart displays monthly precipitation patterns in Trelleborg, 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 Trelleborg, September typically receives around 67 mm (2.6 inches) of precipitation spread over approximately 11 days.
JanFebMarAprMayJunJulAugSepOctNovDec505164314245696867784461
Data source: Precipitation data for September generated using information from the Copernicus Climate Change Service.
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September Humidity in Trelleborg

In Trelleborg in September, humidity is 82%. With an average temperature of 14°C (58°F), this humidity feels like a heavy blanket wrapping around you, making travel uncomfortable and sticky.

September Average Humidity in Trelleborg

This chart illustrates the average monthly humidity levels in Trelleborg, 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 Trelleborg is approximately 82%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec87%88%87%85%82%81%82%80%82%85%85%85%
Data source: Humidity data for September generated using information from the Copernicus Climate Change Service.

September UV Index in Trelleborg

In Trelleborg 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 Trelleborg.

Maximum UV Index Levels in Trelleborg for September

The chart shows the monthly maximum UV Index (UVI) for Trelleborg 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 Trelleborg typically reaches 5, which falls under the moderate exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec123567765311
Data source: Trelleborg 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 Trelleborg Compares to Other Months

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

This table compares monthly weather conditions in Trelleborg, showing how September’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather2°C (36°F)50 mm (2.0 inches)87%low
February Weather2°C (36°F)51 mm (2.0 inches)88%low
March Weather4°C (39°F)64 mm (2.5 inches)87%moderate
April Weather7°C (45°F)31 mm (1.2 inches)85%moderate
May Weather12°C (53°F)42 mm (1.7 inches)82%high
June Weather17°C (63°F)45 mm (1.8 inches)81%high
July Weather18°C (64°F)69 mm (2.7 inches)82%high
August Weather18°C (64°F)68 mm (2.7 inches)80%high
September Weather14°C (58°F)67 mm (2.6 inches)82%moderate
October Weather10°C (51°F)78 mm (3.1 inches)85%moderate
November Weather7°C (44°F)44 mm (1.7 inches)85%low
December Weather4°C (39°F)61 mm (2.4 inches)85%low

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