September Weather in Valla, Sweden

Last updated: August 27, 2025

In September, the average temperature in Valla, Sweden hovers around 8°C (47°F), with a minimum dip to -1°C (31°F) and a pleasant maximum reaching 22°C (72°F). Expect 90 mm (3.5 in) of precipitation over approximately 16 days, contributing to a notably high average humidity of 92%. Be prepared for a mix of cool and wet conditions!

September Temperature in Valla

In September in Valla, the average temperature is 8°C (47°F). The maximum can reach 22°C (72°F), and the minimum can drop as low as -1°C (31°F). This variation in temperature makes Valla an ideal destination for travelers seeking both mild days and crisp, cool evenings.

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

The chart illustrates September temperature patterns in Valla, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Valla, September typically has an average temperature of 8°C (47°F), with highs reaching up to 22°C (72°F) and lows dropping to around -1°C (31°F).

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

September Precipitation in Valla

In Valla in September, the total precipitation amount is 90 mm (3.5 in) distributed over 16 days.

September Precipitation Trends in Valla

The chart displays monthly precipitation patterns in Valla, 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 Valla, September typically receives around 90 mm (3.5 inches) of precipitation spread over approximately 16 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 Valla

In Valla in September humidity is 92%. With an average temperature of 8°C (47°F), this humidity feels like a heavy blanket enveloping you, making outdoor activities uncomfortable and exhausting for travelers.

September Average Humidity in Valla

This chart illustrates the average monthly humidity levels in Valla, 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 Valla is approximately 92%, 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 Valla

In Valla 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 Valla, you can check the information here.

Maximum UV Index Levels in Valla for September

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

Data source: Valla 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 Valla Compares to Other Months

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

This table compares monthly weather conditions in Valla, showing how September’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
	Temperature	Precipitation	Humidity	UV
January Weather	-5°C (23°F)	65 mm (2.6 inches)	99%	low
February Weather	-6°C (22°F)	42 mm (1.7 inches)	97%	low
March Weather	-3°C (27°F)	63 mm (2.5 inches)	94%	moderate
April Weather	1°C (34°F)	40 mm (1.6 inches)	89%	moderate
May Weather	7°C (44°F)	50 mm (2.0 inches)	86%	moderate
June Weather	13°C (55°F)	67 mm (2.6 inches)	81%	high
July Weather	14°C (58°F)	84 mm (3.3 inches)	82%	high
August Weather	13°C (55°F)	88 mm (3.5 inches)	90%	moderate
September Weather	8°C (47°F)	90 mm (3.5 inches)	92%	moderate
October Weather	4°C (39°F)	86 mm (3.4 inches)	95%	low
November Weather	-1°C (30°F)	60 mm (2.3 inches)	98%	low
December Weather	-4°C (25°F)	69 mm (2.7 inches)	100%	low