September Weather in Alfta, Sweden

Last updated: August 27, 2025

In September, the average temperature in Alfta, Sweden hovers around 10°C (51°F), with a minimum of -1°C (30°F) and a peak of 23°C (74°F). Expect 60 mm (2.4 in) of precipitation spread over 11 days, contributing to an average humidity level of 87%. Stay prepared for a mix of weather!

September Temperature in Alfta

In September in Alfta, the average temperature is 10°C (51°F). Maximums can reach 23°C (74°F), and minimums can drop as low as -1°C (30°F). This range makes it essential to pack layers for a comfortable visit, ensuring you're prepared for both warm days and chillier nights.

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

The chart illustrates September temperature patterns in Alfta, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Alfta, September typically has an average temperature of 10°C (51°F), with highs reaching up to 23°C (74°F) and lows dropping to around -1°C (30°F).

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

September Precipitation in Alfta

In Alfta in September, the precipitation amount is 60 mm (2.4 in) over the course of 11 days.

September Precipitation Trends in Alfta

The chart displays monthly precipitation patterns in Alfta, 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 Alfta, September typically receives around 60 mm (2.4 inches) of precipitation spread over approximately 11 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 Alfta

In Alfta in September humidity is 87%. With an average temperature of 10°C (51°F), this humidity feels like a heavy blanket enveloping you, making outdoor activities uncomfortable and sticky, and often requiring frequent breaks to stay hydrated and cool.

September Average Humidity in Alfta

This chart illustrates the average monthly humidity levels in Alfta, 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 Alfta is approximately 87%, 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 Alfta

In Alfta 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 Alfta for better planning.

Maximum UV Index Levels in Alfta for September

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

Data source: Alfta 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 Alfta Compares to Other Months

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

This table compares monthly weather conditions in Alfta, showing how September’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
	Temperature	Precipitation	Humidity	UV
January Weather	-4°C (25°F)	39 mm (1.5 inches)	96%	low
February Weather	-4°C (25°F)	39 mm (1.5 inches)	93%	low
March Weather	-1°C (31°F)	40 mm (1.6 inches)	91%	moderate
April Weather	3°C (38°F)	35 mm (1.4 inches)	84%	moderate
May Weather	9°C (49°F)	60 mm (2.4 inches)	74%	moderate
June Weather	15°C (59°F)	76 mm (3.0 inches)	73%	high
July Weather	16°C (61°F)	84 mm (3.3 inches)	73%	high
August Weather	15°C (59°F)	102 mm (4.0 inches)	78%	moderate
September Weather	10°C (51°F)	60 mm (2.4 inches)	87%	moderate
October Weather	5°C (42°F)	82 mm (3.2 inches)	92%	low
November Weather	1°C (34°F)	46 mm (1.8 inches)	94%	low
December Weather	-3°C (27°F)	59 mm (2.3 inches)	94%	low