September Weather in Hartenstein, Germany

Last updated: August 23, 2025

In September, the average temperature in Hartenstein, Germany hovers around 14°C (57°F), with a comfortable range from a chilly 1°C (35°F) to a warm 29°C (85°F). Be prepared for 66 mm (2.6 in) of precipitation over approximately 11 days, and expect a high average humidity of 81%, creating a moist atmosphere throughout the month.

September Temperature in Hartenstein

In September in Hartenstein, the average temperature is 14°C (57°F). Maximums can reach 29°C (85°F), while minimums can drop to 1°C (35°F). It's advisable to pack layers for your trip, as the weather can vary significantly throughout the day.

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

The chart illustrates September temperature patterns in Hartenstein, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Hartenstein, September typically has an average temperature of 14°C (57°F), with highs reaching up to 29°C (85°F) and lows dropping to around 1°C (35°F).

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

September Precipitation in Hartenstein

In Hartenstein in September, the precipitation amount is 66 mm (2.6 in) spread over 11 days.

September Precipitation Trends in Hartenstein

The chart displays monthly precipitation patterns in Hartenstein, 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 Hartenstein, September typically receives around 66 mm (2.6 inches) of precipitation spread over approximately 11 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 Hartenstein

In Hartenstein in September, humidity is 81%. With an average temperature of 14°C (57°F), this humidity feels like a warm, dense blanket that clings to your skin, making outdoor exploration a bit heavier and more tiring.

September Average Humidity in Hartenstein

This chart illustrates the average monthly humidity levels in Hartenstein, 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 Hartenstein is approximately 81%, 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 Hartenstein

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

Maximum UV Index Levels in Hartenstein for September

The chart shows the monthly maximum UV Index (UVI) for Hartenstein 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 Hartenstein typically reaches 6, which falls under the high exposure category.

Data source: Hartenstein 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 Hartenstein Compares to Other Months

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

This table compares monthly weather conditions in Hartenstein, showing how September’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
	Temperature	Precipitation	Humidity	UV
January Weather	0°C (33°F)	81 mm (3.2 inches)	90%	low
February Weather	2°C (35°F)	63 mm (2.5 inches)	89%	low
March Weather	4°C (40°F)	74 mm (2.9 inches)	87%	moderate
April Weather	8°C (47°F)	45 mm (1.8 inches)	81%	high
May Weather	12°C (54°F)	88 mm (3.5 inches)	71%	high
June Weather	18°C (64°F)	73 mm (2.9 inches)	75%	very high
July Weather	18°C (65°F)	78 mm (3.1 inches)	74%	very high
August Weather	18°C (65°F)	97 mm (3.8 inches)	76%	high
September Weather	14°C (57°F)	66 mm (2.6 inches)	81%	high
October Weather	10°C (50°F)	85 mm (3.3 inches)	85%	moderate
November Weather	5°C (41°F)	48 mm (1.9 inches)	88%	low
December Weather	2°C (36°F)	88 mm (3.5 inches)	92%	low