nomadseason

September Weather in Koepmanholmen, Sweden

Last updated: August 27, 2025

In September, the average temperature in Koepmanholmen, Sweden hovers around 10°C (51°F). Expect chilly nights with a minimum temperature dipping to -1°C (31°F), while daytime can see a pleasant high of 20°C (67°F). Additionally, prepare for 72 mm (2.8 in) of precipitation spread over 13 days, contributing to a high average humidity of 87%.

September Temperature in Koepmanholmen

In September in Koepmanholmen, the average temperature is 10°C (51°F). Maximums can reach 20°C (67°F) and minimums can drop as low as -1°C (31°F). Be prepared for a mix of mild days and chilly nights while enjoying your travels!

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

The chart illustrates September temperature patterns in Koepmanholmen, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Koepmanholmen, September typically has an average temperature of 10°C (51°F), with highs reaching up to 20°C (67°F) and lows dropping to around -1°C (31°F).
JanFebMarAprMayJunJulAugSepOctNovDec242329364657615951413328
Data source: Temperature data for Koepmanholmen generated using information from the Copernicus Climate Change Service.
Choose your preferred temperature unit
The average of daily temperatures (24 hours) calculated across all days in the month.

September Precipitation in Koepmanholmen

In Koepmanholmen in September, the precipitation amount is 72 mm (2.8 in) over a period of 13 days.

September Precipitation Trends in Koepmanholmen

The chart displays monthly precipitation patterns in Koepmanholmen, 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 Koepmanholmen, September typically receives around 72 mm (2.8 inches) of precipitation spread over approximately 13 days.
JanFebMarAprMayJunJulAugSepOctNovDec5850482943546676721056695
Data source: Precipitation data for September generated using information from the Copernicus Climate Change Service.
Choose your preferred precipitation unit

September Humidity in Koepmanholmen

In Koepmanholmen in September humidity is 87%. With an average temperature of 10°C (51°F), this humidity feels like a heavy blanket enveloping you, making outdoor activities uncomfortable and sticky, and often requiring frequent breaks to stay hydrated and cool.

September Average Humidity in Koepmanholmen

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

In Koepmanholmen 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 Koepmanholmen, you can check the information here.

Maximum UV Index Levels in Koepmanholmen for September

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

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

This table compares monthly weather conditions in Koepmanholmen, showing how September’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather-5°C (24°F)58 mm (2.3 inches)95%low
February Weather-5°C (23°F)50 mm (2.0 inches)94%low
March Weather-2°C (29°F)48 mm (1.9 inches)91%low
April Weather2°C (37°F)29 mm (1.2 inches)85%moderate
May Weather8°C (46°F)43 mm (1.7 inches)79%moderate
June Weather14°C (57°F)53 mm (2.1 inches)75%high
July Weather16°C (61°F)66 mm (2.6 inches)80%high
August Weather15°C (59°F)75 mm (3.0 inches)84%moderate
September Weather10°C (51°F)72 mm (2.8 inches)87%moderate
October Weather5°C (41°F)105 mm (4.1 inches)92%low
November Weather0°C (33°F)66 mm (2.6 inches)92%low
December Weather-2°C (28°F)95 mm (3.7 inches)94%low

Compare Koepmanholmen's Climate with Cities Worldwide