September Weather in Sankt Blasen, Austria

Last updated: August 22, 2025

In Sankt Blasen, Austria, the average temperature in September is a brisk 12°C (53°F). Be prepared for a range of conditions; temperatures can drop to a chilly -4°C (25°F) or rise to a warm 25°C (78°F). Expect about 117 mm (4.6 in) of precipitation spread over 13 days, along with an average humidity of 74%. Perfect weather for layering up!

September Temperature in Sankt Blasen

In September in Sankt Blasen, the average temperature is 12°C (53°F), with maximums reaching 25°C (78°F) and minimums dropping as low as -4°C (25°F). This variety in temperatures makes it essential to pack layers for a comfortable traveling experience.

September Weather in Sankt Blasen: Daily Temperature Highs, Lows, and Averages

The chart illustrates September temperature patterns in Sankt Blasen, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Sankt Blasen, September typically has an average temperature of 12°C (53°F), with highs reaching up to 25°C (78°F) and lows dropping to around -4°C (25°F).

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

September Precipitation in Sankt Blasen

In Sankt Blasen in September, the total precipitation amount is 117 mm (4.6 in) spread over 13 days.

September Precipitation Trends in Sankt Blasen

The chart displays monthly precipitation patterns in Sankt Blasen, 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 Sankt Blasen, September typically receives around 117 mm (4.6 inches) of precipitation spread over approximately 13 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 Sankt Blasen

In Sankt Blasen in September, humidity is 74%. With an average temperature of 12°C (53°F), this humidity feels like a damp chill wraps around you, making outdoor activities less enjoyable and encouraging you to seek cozy indoor spots instead.

September Average Humidity in Sankt Blasen

This chart illustrates the average monthly humidity levels in Sankt Blasen, 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 Sankt Blasen is approximately 74%, 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 Sankt Blasen

In Sankt Blasen in September, the maximum UV index is 7, which corresponds to the high Exposure Category. This means that the time to burn is approximately 25 minutes. For more detailed information, you can check the Hourly UV Index in Sankt Blasen.

Maximum UV Index Levels in Sankt Blasen for September

The chart shows the monthly maximum UV Index (UVI) for Sankt Blasen 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 Sankt Blasen typically reaches 7, which falls under the high exposure category.

Data source: Sankt Blasen 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 Sankt Blasen Compares to Other Months

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

This table compares monthly weather conditions in Sankt Blasen, showing how September’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
	Temperature	Precipitation	Humidity	UV
January Weather	-4°C (25°F)	42 mm (1.7 inches)	91%	low
February Weather	-1°C (30°F)	50 mm (2.0 inches)	87%	moderate
March Weather	2°C (36°F)	54 mm (2.1 inches)	82%	high
April Weather	6°C (43°F)	64 mm (2.5 inches)	79%	high
May Weather	10°C (50°F)	133 mm (5.3 inches)	74%	very high
June Weather	15°C (60°F)	111 mm (4.4 inches)	75%	very high
July Weather	16°C (61°F)	131 mm (5.1 inches)	74%	very high
August Weather	16°C (61°F)	148 mm (5.8 inches)	68%	very high
September Weather	12°C (53°F)	117 mm (4.6 inches)	74%	high
October Weather	7°C (45°F)	75 mm (3.0 inches)	88%	moderate
November Weather	2°C (36°F)	92 mm (3.6 inches)	90%	moderate
December Weather	-3°C (28°F)	85 mm (3.3 inches)	89%	low