September Weather in Stroemsund, Sweden

Last updated: August 27, 2025

In September, the average temperature in Stroemsund, Sweden hovers around 9°C (48°F). However, be prepared for a range, as the minimum can dip to -1°C (31°F) while the maximum can reach 22°C (73°F). With an average humidity of 89% and 86 mm (3.4 in) of precipitation spread over 15 days, it's a month that calls for both layers and an umbrella!

September Temperature in Stroemsund

In September in Stroemsund, the average temperature is 9°C (48°F). Maximums can reach 22°C (73°F) and minimums can be as low as -1°C (31°F). Be prepared for a mix of mild days and chilly nights while traveling during this time.

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

The chart illustrates September temperature patterns in Stroemsund, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Stroemsund, September typically has an average temperature of 9°C (48°F), with highs reaching up to 22°C (73°F) and lows dropping to around -1°C (31°F).

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

September Precipitation in Stroemsund

In Stroemsund in September, the precipitation amount is 86 mm (3.4 in) that falls over a span of 15 days.

September Precipitation Trends in Stroemsund

The chart displays monthly precipitation patterns in Stroemsund, 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 Stroemsund, September typically receives around 86 mm (3.4 inches) of precipitation spread over approximately 15 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 Stroemsund

In Stroemsund in September humidity is 89%. With an average temperature of 9°C (48°F), this humidity feels like a chill that lingers in the air, wrapping around you like a damp blanket, making outdoor activities challenging and encouraging a cozy retreat indoors.

September Average Humidity in Stroemsund

This chart illustrates the average monthly humidity levels in Stroemsund, 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 Stroemsund is approximately 89%, 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 Stroemsund

In Stroemsund 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 Stroemsund, you can check the information here.

Maximum UV Index Levels in Stroemsund for September

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

Data source: Stroemsund 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 Stroemsund Compares to Other Months

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

This table compares monthly weather conditions in Stroemsund, 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 (21°F)	56 mm (2.2 inches)	97%	low
February Weather	-6°C (21°F)	39 mm (1.5 inches)	95%	low
March Weather	-3°C (27°F)	46 mm (1.8 inches)	92%	moderate
April Weather	2°C (35°F)	35 mm (1.4 inches)	86%	moderate
May Weather	7°C (45°F)	55 mm (2.2 inches)	80%	moderate
June Weather	13°C (56°F)	70 mm (2.8 inches)	76%	high
July Weather	15°C (60°F)	84 mm (3.3 inches)	80%	high
August Weather	13°C (56°F)	77 mm (3.0 inches)	86%	moderate
September Weather	9°C (48°F)	86 mm (3.4 inches)	89%	moderate
October Weather	4°C (39°F)	83 mm (3.3 inches)	93%	low
November Weather	-1°C (30°F)	56 mm (2.2 inches)	94%	low
December Weather	-4°C (24°F)	70 mm (2.7 inches)	96%	low