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September Weather in Otter, Germany

Last updated: August 23, 2025

In September, the average temperature in Otter, Germany is a comfortable 15°C (59°F). However, you can expect a range, with temperatures dipping as low as 4°C (39°F) and soaring up to 31°C (88°F). Prepare for a sprinkling of rain, as the area sees about 57 mm (2.2 in) of precipitation over 11 days. With an average humidity level of 81%, it's a perfect time to enjoy the mild weather!

September Temperature in Otter

In September in Otter, the average temperature is 15°C (59°F). Maximums can reach up to 31°C (88°F) and minimums can drop to as low as 4°C (39°F). Overall, this month offers a comfortable climate for travelers, so be sure to pack both light clothing and a warmer layer for the cooler evenings.

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

The chart illustrates September temperature patterns in Otter, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Otter, September typically has an average temperature of 15°C (59°F), with highs reaching up to 31°C (88°F) and lows dropping to around 4°C (39°F).
JanFebMarAprMayJunJulAugSepOctNovDec373841485565656659534439
Data source: Temperature data for Otter 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 Otter

In Otter in September, the precipitation amount is 57 mm (2.2 in) spread over 11 days.

September Precipitation Trends in Otter

The chart displays monthly precipitation patterns in Otter, 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 Otter, September typically receives around 57 mm (2.2 inches) of precipitation spread over approximately 11 days.
JanFebMarAprMayJunJulAugSepOctNovDec645967497376877757785172
Data source: Precipitation data for September generated using information from the Copernicus Climate Change Service.
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September Humidity in Otter

In Otter in September humidity is 81%. With an average temperature of 15°C (59°F), this humidity feels like a heavy blanket draped over you, making traveling quite uncomfortable as you constantly wipe away beads of sweat and feel the stickiness clinging to your clothes.

September Average Humidity in Otter

This chart illustrates the average monthly humidity levels in Otter, 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 Otter is approximately 81%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec91%89%87%82%73%66%66%67%81%86%90%90%
Data source: Humidity data for September generated using information from the Copernicus Climate Change Service.

September UV Index in Otter

In Otter 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 Otter.

Maximum UV Index Levels in Otter for September

The chart shows the monthly maximum UV Index (UVI) for Otter 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 Otter typically reaches 5, which falls under the moderate exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec124578775321
Data source: Otter 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 Otter Compares to Other Months

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

This table compares monthly weather conditions in Otter, showing how September’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather3°C (38°F)64 mm (2.5 inches)91%low
February Weather3°C (38°F)59 mm (2.3 inches)89%low
March Weather5°C (42°F)67 mm (2.6 inches)87%moderate
April Weather9°C (48°F)49 mm (1.9 inches)82%moderate
May Weather13°C (56°F)73 mm (2.9 inches)73%high
June Weather18°C (65°F)76 mm (3.0 inches)66%very high
July Weather18°C (65°F)87 mm (3.4 inches)66%high
August Weather19°C (66°F)77 mm (3.0 inches)67%high
September Weather15°C (59°F)57 mm (2.2 inches)81%moderate
October Weather11°C (53°F)78 mm (3.1 inches)86%moderate
November Weather7°C (44°F)51 mm (2.0 inches)90%low
December Weather4°C (40°F)72 mm (2.8 inches)90%low

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