September Weather in Hammer, Germany

Last updated: August 23, 2025

In September, the average temperature in Hammer, Germany hovers around 15°C (59°F). You can expect a minimum of 3°C (37°F) and occasionally reach a maximum of 33°C (91°F). Prepare for some rainy days as the area sees approximately 51 mm (2.0 in) of precipitation over 9 days. With an average humidity of 82%, be ready for a comfortably humid climate!

September Temperature in Hammer

In September in Hammer, the average temperature is 15°C (59°F). Maximum temperatures can reach 33°C (91°F), while minimums can drop as low as 3°C (37°F). This variation makes it essential for travelers to pack for both warm and cool conditions.

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

The chart illustrates September temperature patterns in Hammer, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Hammer, September typically has an average temperature of 15°C (59°F), with highs reaching up to 33°C (91°F) and lows dropping to around 3°C (37°F).

Data source: Temperature data for Hammer generated using information from the Copernicus Climate Change Service.

September Precipitation in Hammer

In Hammer in September, the total precipitation amount is 51 mm (2.0 in) spread over 9 days.

September Precipitation Trends in Hammer

The chart displays monthly precipitation patterns in Hammer, 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 Hammer, September typically receives around 51 mm (2.0 inches) of precipitation spread over approximately 9 days.

Data source: Precipitation data for September generated using information from the Copernicus Climate Change Service.

Choose your preferred precipitation unit

Millimeters (mm) Inches (in)

September Humidity in Hammer

In Hammer in September, humidity is 82%. With an average temperature of 15°C (59°F), this humidity feels like a heavy blanket wrapping around you, making outdoor activities feel sticky and uncomfortable for travelers.

September Average Humidity in Hammer

This chart illustrates the average monthly humidity levels in Hammer, 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 Hammer is approximately 82%, offering insight into how humid the weather typically is during this month.

Data source: Humidity data for September generated using information from the Copernicus Climate Change Service.

September UV Index in Hammer

In Hammer 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 Hammer.

Maximum UV Index Levels in Hammer for September

The chart shows the monthly maximum UV Index (UVI) for Hammer 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 Hammer typically reaches 5, which falls under the moderate exposure category.

Data source: Hammer 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 Hammer Compares to Other Months

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

This table compares monthly weather conditions in Hammer, showing how September’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
	Temperature	Precipitation	Humidity	UV
January Weather	2°C (36°F)	51 mm (2.0 inches)	91%	low
February Weather	2°C (36°F)	40 mm (1.6 inches)	90%	low
March Weather	4°C (40°F)	50 mm (2.0 inches)	88%	moderate
April Weather	8°C (47°F)	38 mm (1.5 inches)	82%	moderate
May Weather	13°C (55°F)	56 mm (2.2 inches)	74%	high
June Weather	18°C (65°F)	53 mm (2.1 inches)	75%	very high
July Weather	19°C (66°F)	105 mm (4.1 inches)	74%	high
August Weather	19°C (67°F)	62 mm (2.4 inches)	71%	high
September Weather	15°C (59°F)	51 mm (2.0 inches)	82%	moderate
October Weather	11°C (52°F)	64 mm (2.5 inches)	86%	moderate
November Weather	6°C (43°F)	47 mm (1.9 inches)	89%	low
December Weather	3°C (37°F)	47 mm (1.9 inches)	93%	low