September Weather in Straumen, Norway

Last updated: August 27, 2025

In September, the average temperature in Straumen, Norway hovers around 8°C (47°F). Expect a chill in the air, with minimums dipping to -4°C (25°F) and pleasant highs reaching up to 20°C (68°F). Rainfall is frequent, with about 170 mm (6.7 in) of precipitation spread over 17 days, contributing to an average humidity level of 93%. 🌧️

September Temperature in Straumen

In September in Straumen, the average temperature is 8°C (47°F). Maximum temperatures can reach 20°C (68°F), while minimums can drop as low as -4°C (25°F). Overall, this month offers a mix of mild days and chilly nights, making it essential for travelers to dress in layers.

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

The chart illustrates September temperature patterns in Straumen, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Straumen, September typically has an average temperature of 8°C (47°F), with highs reaching up to 20°C (68°F) and lows dropping to around -4°C (25°F).

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

September Precipitation in Straumen

In Straumen in September, the precipitation amount is 170 mm (6.7 in) spread over 17 days.

September Precipitation Trends in Straumen

The chart displays monthly precipitation patterns in Straumen, 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 Straumen, September typically receives around 170 mm (6.7 inches) of precipitation spread over approximately 17 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 Straumen

In Straumen in September humidity is 93%. With an average temperature of 8°C (47°F), this humidity feels like a chilly embrace that seeps into your clothes, making every step you take feel heavier and damp, which can be quite uncomfortable for traveling.

September Average Humidity in Straumen

This chart illustrates the average monthly humidity levels in Straumen, 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 Straumen is approximately 93%, 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 Straumen

In Straumen in September, the maximum UV index is 3, which corresponds to a moderate Exposure Category. The time to burn is approximately 30 minutes. For more details on the hourly UV index in Straumen, you can check the information here.

Maximum UV Index Levels in Straumen for September

The chart shows the monthly maximum UV Index (UVI) for Straumen 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 Straumen typically reaches 3, which falls under the moderate exposure category.

Data source: Straumen 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 Straumen Compares to Other Months

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

This table compares monthly weather conditions in Straumen, 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)	153 mm (6.0 inches)	98%	low
February Weather	-6°C (21°F)	137 mm (5.4 inches)	96%	low
March Weather	-4°C (26°F)	195 mm (7.7 inches)	93%	low
April Weather	0°C (32°F)	140 mm (5.5 inches)	91%	moderate
May Weather	5°C (42°F)	111 mm (4.4 inches)	84%	moderate
June Weather	11°C (52°F)	147 mm (5.8 inches)	81%	high
July Weather	14°C (57°F)	154 mm (6.1 inches)	85%	high
August Weather	12°C (54°F)	165 mm (6.5 inches)	89%	moderate
September Weather	8°C (47°F)	170 mm (6.7 inches)	93%	moderate
October Weather	3°C (37°F)	133 mm (5.2 inches)	95%	low
November Weather	-1°C (30°F)	130 mm (5.1 inches)	95%	low
December Weather	-4°C (25°F)	124 mm (4.9 inches)	98%	low