September Weather in Aas, Norway

Last updated: August 27, 2025

In September, the average temperature in Aas, Norway hovers around 7°C (44°F). Expect chilly evenings, with minimums dipping to -4°C (25°F), while daytime highs can reach up to 18°C (66°F). Be prepared for frequent rain, as precipitation totals about 111 mm (4.4 in) over 19 days, and you'll likely feel the dampness with an average humidity of 90%.

September Temperature in Aas

In September in Aas, the average temperature is 7°C (44°F). The maximum can reach 18°C (66°F), while the minimum can drop as low as -4°C (25°F). Travelers should be prepared for a wide range of temperatures and pack accordingly to fully enjoy their visit.

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

The chart illustrates September temperature patterns in Aas, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Aas, September typically has an average temperature of 7°C (44°F), with highs reaching up to 18°C (66°F) and lows dropping to around -4°C (25°F).

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

September Precipitation in Aas

In Aas in September, the precipitation amount is 111 mm (4.4 in) over a span of 19 days.

September Precipitation Trends in Aas

The chart displays monthly precipitation patterns in Aas, 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 Aas, September typically receives around 111 mm (4.4 inches) of precipitation spread over approximately 19 days.

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

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Millimeters (mm) Inches (in)

September Humidity in Aas

In Aas in September, humidity is 90%. With an average temperature of 7°C (44°F), this humidity feels like a heavy blanket wrapping around you, making every step feel sluggish and damp, which can be quite challenging for traveling.

September Average Humidity in Aas

This chart illustrates the average monthly humidity levels in Aas, 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 Aas is approximately 90%, 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 Aas

In Aas in September, the maximum UV index reaches 4, which corresponds to a moderate Exposure Category. With a time to burn of 30 minutes, it’s important to take precautions to protect your skin. You can find more details in the Hourly UV Index in Aas for better planning.

Maximum UV Index Levels in Aas for September

The chart shows the monthly maximum UV Index (UVI) for Aas 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 Aas typically reaches 4, which falls under the moderate exposure category.

Data source: Aas 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 Aas Compares to Other Months

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

This table compares monthly weather conditions in Aas, showing how September’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
	Temperature	Precipitation	Humidity	UV
January Weather	-6°C (22°F)	91 mm (3.6 inches)	96%	low
February Weather	-6°C (22°F)	72 mm (2.8 inches)	94%	low
March Weather	-4°C (25°F)	109 mm (4.3 inches)	91%	moderate
April Weather	-1°C (31°F)	93 mm (3.6 inches)	86%	moderate
May Weather	4°C (39°F)	71 mm (2.8 inches)	83%	high
June Weather	10°C (51°F)	103 mm (4.0 inches)	81%	high
July Weather	12°C (54°F)	102 mm (4.0 inches)	81%	high
August Weather	10°C (51°F)	126 mm (5.0 inches)	88%	moderate
September Weather	7°C (44°F)	111 mm (4.4 inches)	90%	moderate
October Weather	2°C (36°F)	116 mm (4.6 inches)	93%	low
November Weather	-3°C (27°F)	85 mm (3.3 inches)	95%	low
December Weather	-5°C (24°F)	104 mm (4.1 inches)	97%	low