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September Weather in Ummerstadt, Germany

Last updated: August 23, 2025

In Ummerstadt, Germany, the average temperature in September hovers around 15°C (58°F), providing a comfortable climate. Daily fluctuations can bring a minimum of 1°C (35°F) and a pleasant maximum of 30°C (87°F). Expect 49 mm (1.9 in) of precipitation spread over 8 days, with an average humidity of 83% contributing to a refreshing atmosphere.

September Temperature in Ummerstadt

In September in Ummerstadt, the average temperature is 15°C (58°F). Maximums can reach 30°C (87°F), while minimums can drop as low as 1°C (35°F). Dress in layers to comfortably enjoy the diverse weather during your travels.

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

The chart illustrates September temperature patterns in Ummerstadt, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Ummerstadt, September typically has an average temperature of 15°C (58°F), with highs reaching up to 30°C (87°F) and lows dropping to around 1°C (35°F).
JanFebMarAprMayJunJulAugSepOctNovDec343641485565666658504136
Data source: Temperature data for Ummerstadt 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 Ummerstadt

In Ummerstadt in September, the precipitation amount is 49 mm (1.9 in) spread over 8 days.

September Precipitation Trends in Ummerstadt

The chart displays monthly precipitation patterns in Ummerstadt, 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 Ummerstadt, September typically receives around 49 mm (1.9 inches) of precipitation spread over approximately 8 days.
JanFebMarAprMayJunJulAugSepOctNovDec685872348775726749624794
Data source: Precipitation data for September generated using information from the Copernicus Climate Change Service.
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September Humidity in Ummerstadt

In Ummerstadt in September, humidity is 83%. With an average temperature of 15°C (58°F), this humidity feels like a warm blanket enveloping you, making outdoor activities sticky and uncomfortable for traveling.

September Average Humidity in Ummerstadt

This chart illustrates the average monthly humidity levels in Ummerstadt, 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 Ummerstadt is approximately 83%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec91%90%88%83%75%79%79%79%83%87%90%92%
Data source: Humidity data for September generated using information from the Copernicus Climate Change Service.

September UV Index in Ummerstadt

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

Maximum UV Index Levels in Ummerstadt for September

The chart shows the monthly maximum UV Index (UVI) for Ummerstadt 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 Ummerstadt typically reaches 6, which falls under the high exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec224588876421
Data source: Ummerstadt 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 Ummerstadt Compares to Other Months

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

This table compares monthly weather conditions in Ummerstadt, showing how September’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather1°C (34°F)68 mm (2.7 inches)91%low
February Weather2°C (36°F)58 mm (2.3 inches)90%low
March Weather5°C (41°F)72 mm (2.8 inches)88%moderate
April Weather9°C (49°F)34 mm (1.4 inches)83%moderate
May Weather13°C (56°F)87 mm (3.4 inches)75%very high
June Weather18°C (65°F)75 mm (2.9 inches)79%very high
July Weather19°C (66°F)72 mm (2.8 inches)79%very high
August Weather19°C (66°F)67 mm (2.6 inches)79%high
September Weather15°C (58°F)49 mm (1.9 inches)83%high
October Weather10°C (50°F)61 mm (2.4 inches)87%moderate
November Weather5°C (41°F)47 mm (1.9 inches)90%low
December Weather2°C (36°F)94 mm (3.7 inches)92%low

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