September Weather in Grasberg, Austria

Last updated: August 22, 2025

In Grasberg, Austria, the average temperature in September hovers around 15°C (59°F), making it a pleasant time to visit. However, be prepared for a temperature range that can dip to a cool 2°C (35°F) and soar to a warm 30°C (86°F). Expect precipitation of 108 mm (4.3 in) spread over approximately 11 days, contributing to an average humidity level of 74%. Whether it’s the refreshing coolness or the warm days, your experience will certainly be memorable!

September Temperature in Grasberg

In September in Grasberg, the average temperature is 15°C (59°F), with maximums reaching up to 30°C (86°F) and minimums dropping as low as 2°C (35°F). This variability makes it advisable for travelers to pack layers to comfortably accommodate both warm afternoons and chilly evenings.

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

The chart illustrates September temperature patterns in Grasberg, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Grasberg, September typically has an average temperature of 15°C (59°F), with highs reaching up to 30°C (86°F) and lows dropping to around 2°C (35°F).

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

September Precipitation in Grasberg

In Grasberg in September, the precipitation amount is 108 mm (4.3 in) over the course of 11 days.

September Precipitation Trends in Grasberg

The chart displays monthly precipitation patterns in Grasberg, 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 Grasberg, September typically receives around 108 mm (4.3 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 Grasberg

In Grasberg in September, humidity is 74%. With an average temperature of 15°C (59°F), this humidity feels like traveling through a warm, sticky blanket that clings to your skin, making outdoor activities a bit uncomfortable and prompting you to seek out shaded areas or cool breezes.

September Average Humidity in Grasberg

This chart illustrates the average monthly humidity levels in Grasberg, 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 Grasberg 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 Grasberg

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

Maximum UV Index Levels in Grasberg for September

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

Data source: Grasberg 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 Grasberg Compares to Other Months

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

This table compares monthly weather conditions in Grasberg, 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 (32°F)	100 mm (3.9 inches)	91%	low
February Weather	2°C (36°F)	83 mm (3.3 inches)	87%	moderate
March Weather	5°C (41°F)	87 mm (3.4 inches)	82%	moderate
April Weather	9°C (49°F)	59 mm (2.3 inches)	79%	high
May Weather	13°C (56°F)	138 mm (5.4 inches)	74%	very high
June Weather	19°C (66°F)	124 mm (4.9 inches)	75%	very high
July Weather	19°C (67°F)	128 mm (5.0 inches)	74%	very high
August Weather	19°C (67°F)	134 mm (5.3 inches)	68%	very high
September Weather	15°C (59°F)	108 mm (4.3 inches)	74%	high
October Weather	10°C (51°F)	100 mm (3.9 inches)	88%	moderate
November Weather	5°C (41°F)	68 mm (2.7 inches)	90%	low
December Weather	2°C (35°F)	122 mm (4.8 inches)	89%	low