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September Weather in Grolsheim, Germany

Last updated: August 23, 2025

In September, the average temperature in Grolsheim, Germany holds steady at 15°C (60°F), with fluctuations ranging from a cool 2°C (37°F) to a warm 32°C (90°F). Expect about 46 mm (1.8 in) of rainfall spread over 7 days, contributing to an average humidity of 85%. Embrace the blend of mild weather and lush atmospheric conditions!

September Temperature in Grolsheim

In September in Grolsheim, the average temperature is 15°C (60°F). Maximums can reach 32°C (90°F), while minimums can be as low as 2°C (37°F). This diverse range of temperatures means travelers should pack for both warm afternoons and cooler nights.

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

The chart illustrates September temperature patterns in Grolsheim, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Grolsheim, September typically has an average temperature of 15°C (60°F), with highs reaching up to 32°C (90°F) and lows dropping to around 2°C (37°F).
JanFebMarAprMayJunJulAugSepOctNovDec363843495666676759524238
Data source: Temperature data for Grolsheim 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 Grolsheim

In Grolsheim in September, the precipitation amount is 46 mm (1.8 in) over the course of 7 days.

September Precipitation Trends in Grolsheim

The chart displays monthly precipitation patterns in Grolsheim, 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 Grolsheim, September typically receives around 46 mm (1.8 inches) of precipitation spread over approximately 7 days.
JanFebMarAprMayJunJulAugSepOctNovDec555464357180686046524794
Data source: Precipitation data for September generated using information from the Copernicus Climate Change Service.
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September Humidity in Grolsheim

In Grolsheim in September, humidity is 85%. With an average temperature of 15°C (60°F), this humidity feels like a warm, sticky embrace, making outdoor activities somewhat uncomfortable for travelers who may find themselves constantly seeking shade and hydration.

September Average Humidity in Grolsheim

This chart illustrates the average monthly humidity levels in Grolsheim, 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 Grolsheim is approximately 85%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec91%89%87%83%79%82%83%84%86%88%89%91%
Data source: Humidity data for September generated using information from the Copernicus Climate Change Service.

September UV Index in Grolsheim

In Grolsheim in September, the maximum UV index is 6, which corresponds to a high Exposure Category. The time to burn is approximately 25 minutes. To find the hourly UV index in Grolsheim, you can refer to this Hourly UV Index in Grolsheim.

Maximum UV Index Levels in Grolsheim for September

The chart shows the monthly maximum UV Index (UVI) for Grolsheim 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 Grolsheim typically reaches 6, which falls under the high exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec234688876421
Data source: Grolsheim 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 Grolsheim Compares to Other Months

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

This table compares monthly weather conditions in Grolsheim, showing how September’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather2°C (36°F)55 mm (2.2 inches)91%low
February Weather3°C (39°F)54 mm (2.1 inches)89%moderate
March Weather6°C (43°F)64 mm (2.5 inches)87%moderate
April Weather10°C (50°F)35 mm (1.4 inches)83%high
May Weather13°C (56°F)71 mm (2.8 inches)79%very high
June Weather19°C (66°F)80 mm (3.1 inches)82%very high
July Weather20°C (68°F)68 mm (2.7 inches)83%very high
August Weather19°C (67°F)60 mm (2.3 inches)84%high
September Weather15°C (60°F)46 mm (1.8 inches)85%high
October Weather11°C (52°F)52 mm (2.0 inches)88%moderate
November Weather5°C (42°F)47 mm (1.9 inches)89%low
December Weather3°C (38°F)94 mm (3.7 inches)91%low

Compare Grolsheim's Climate with Cities Worldwide