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September Weather in Weil am Rhein, Germany

Last updated: August 23, 2025

In Weil am Rhein, Germany, the average temperature in September hovers around 16°C (60°F), making it a mild time of year. Temperatures can vary widely, with a minimum dipping to 1°C (35°F) and a maximum soaring to 30°C (86°F). Expect about 67 mm (2.6 in) of precipitation over roughly 10 days, accompanied by a relatively high average humidity of 81%. Embrace the changing weather and plan your activities accordingly!

September Temperature in Weil am Rhein

In September in Weil am Rhein, the average temperature is 16°C (60°F). The maximum can reach 30°C (86°F), while the minimum can drop to as low as 1°C (35°F). Be prepared for a mix of warm days and cooler evenings while traveling.

September Weather in Weil am Rhein: Daily Temperature Highs, Lows, and Averages

The chart illustrates September temperature patterns in Weil am Rhein, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Weil am Rhein, September typically has an average temperature of 16°C (60°F), with highs reaching up to 30°C (86°F) and lows dropping to around 1°C (35°F).
JanFebMarAprMayJunJulAugSepOctNovDec343943505665686760514137
Data source: Temperature data for Weil am Rhein 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 Weil am Rhein

In Weil am Rhein in September, the total precipitation amount is 67 mm (2.6 in) over a period of 10 days.

September Precipitation Trends in Weil am Rhein

The chart displays monthly precipitation patterns in Weil am Rhein, 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 Weil am Rhein, September typically receives around 67 mm (2.6 inches) of precipitation spread over approximately 10 days.
JanFebMarAprMayJunJulAugSepOctNovDec94779162133125117116679279129
Data source: Precipitation data for September generated using information from the Copernicus Climate Change Service.
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September Humidity in Weil am Rhein

In Weil am Rhein in September, humidity is 81%. With an average temperature of 16°C (60°F), this humidity feels like a warm, heavy blanket wrapping around you as you travel, making you acutely aware of the sweat on your skin and creating an atmosphere that might dampen your spirits but also invites you to seek out refreshing beverages and shady spots.

September Average Humidity in Weil am Rhein

This chart illustrates the average monthly humidity levels in Weil am Rhein, 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 Weil am Rhein is approximately 81%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec91%89%87%84%80%82%82%77%81%89%89%91%
Data source: Humidity data for September generated using information from the Copernicus Climate Change Service.

September UV Index in Weil am Rhein

In Weil am Rhein 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 Weil am Rhein, you can refer to this Hourly UV Index in Weil am Rhein.

Maximum UV Index Levels in Weil am Rhein for September

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

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

This table compares monthly weather conditions in Weil am Rhein, showing how September’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather1°C (35°F)94 mm (3.7 inches)91%low
February Weather4°C (39°F)77 mm (3.0 inches)89%moderate
March Weather6°C (43°F)91 mm (3.6 inches)87%moderate
April Weather10°C (50°F)62 mm (2.4 inches)84%high
May Weather13°C (56°F)133 mm (5.2 inches)80%very high
June Weather19°C (66°F)125 mm (4.9 inches)82%very high
July Weather20°C (68°F)117 mm (4.6 inches)82%very high
August Weather20°C (68°F)115 mm (4.5 inches)77%very high
September Weather16°C (60°F)67 mm (2.6 inches)81%high
October Weather11°C (51°F)92 mm (3.6 inches)89%moderate
November Weather5°C (41°F)79 mm (3.1 inches)89%low
December Weather3°C (38°F)129 mm (5.1 inches)91%low

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