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September Weather in Grundsheim, Germany

Last updated: August 23, 2025

In September, the average temperature in Grundsheim, Germany hovers around 14°C (57°F). Expect minimums dipping to 1°C (34°F) and maximums soaring to 28°C (83°F). With an average precipitation of 81 mm (3.2 in) spread over 12 days, you'll want to be prepared for some rain. The humidity is notably high, averaging at 85%, making it essential to stay hydrated!

September Temperature in Grundsheim

In September in Grundsheim, the average temperature is 14°C (57°F). Maximums can reach 28°C (83°F), and minimums can be as low as 1°C (34°F). This diverse temperature range makes Grundsheim a great destination for travelers seeking both warm days and cooler nights.

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

The chart illustrates September temperature patterns in Grundsheim, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Grundsheim, September typically has an average temperature of 14°C (57°F), with highs reaching up to 28°C (83°F) and lows dropping to around 1°C (34°F).
JanFebMarAprMayJunJulAugSepOctNovDec323640475463656557493935
Data source: Temperature data for Grundsheim 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 Grundsheim

In Grundsheim in September, the precipitation amount is 81 mm (3.2 in) over a span of 12 days.

September Precipitation Trends in Grundsheim

The chart displays monthly precipitation patterns in Grundsheim, 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 Grundsheim, September typically receives around 81 mm (3.2 inches) of precipitation spread over approximately 12 days.
JanFebMarAprMayJunJulAugSepOctNovDec7167695212313910012381785394
Data source: Precipitation data for September generated using information from the Copernicus Climate Change Service.
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September Humidity in Grundsheim

In Grundsheim in September, humidity is 85%. With an average temperature of 14°C (57°F), this humidity feels like a thick blanket enveloping you, making travel feel heavy and sluggish.

September Average Humidity in Grundsheim

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

In Grundsheim 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 Grundsheim, you can refer to this Hourly UV Index in Grundsheim.

Maximum UV Index Levels in Grundsheim for September

The chart shows the monthly maximum UV Index (UVI) for Grundsheim 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 Grundsheim typically reaches 6, which falls under the high exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec235689986421
Data source: Grundsheim 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 Grundsheim Compares to Other Months

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

This table compares monthly weather conditions in Grundsheim, showing how September’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather0°C (32°F)71 mm (2.8 inches)91%low
February Weather2°C (36°F)67 mm (2.6 inches)89%moderate
March Weather5°C (40°F)69 mm (2.7 inches)87%moderate
April Weather9°C (48°F)52 mm (2.1 inches)83%high
May Weather12°C (54°F)123 mm (4.9 inches)79%very high
June Weather17°C (63°F)139 mm (5.5 inches)82%very high
July Weather18°C (65°F)100 mm (3.9 inches)83%very high
August Weather18°C (65°F)123 mm (4.9 inches)84%very high
September Weather14°C (57°F)81 mm (3.2 inches)85%high
October Weather10°C (49°F)78 mm (3.1 inches)88%moderate
November Weather4°C (39°F)53 mm (2.1 inches)89%low
December Weather2°C (35°F)94 mm (3.7 inches)91%low

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