September Weather in Lesja, Norway

Last updated: August 27, 2025

In September, the average temperature in Lesja, Norway hovers around 6°C (43°F). Expect a chilly minimum of -4°C (25°F) and a pleasant maximum reaching 17°C (62°F). Prepare for a slightly damp month with 87 mm (3.4 in) of precipitation spread across 19 days, contributing to a high average humidity of 92%.

September Temperature in Lesja

In September in Lesja, the average temperature is 6°C (43°F). Maximums can reach 17°C (62°F) and minimums can be as low as -4°C (25°F). Be prepared for a range of temperatures to ensure a comfortable and enjoyable trip.

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

The chart illustrates September temperature patterns in Lesja, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Lesja, September typically has an average temperature of 6°C (43°F), with highs reaching up to 17°C (62°F) and lows dropping to around -4°C (25°F).

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

September Precipitation in Lesja

In Lesja in September, the precipitation amount is 87 mm (3.4 in) over the course of 19 days.

September Precipitation Trends in Lesja

The chart displays monthly precipitation patterns in Lesja, 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 Lesja, September typically receives around 87 mm (3.4 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 Lesja

In Lesja in September humidity is 92%. With an average temperature of 6°C (43°F), this humidity feels like a damp chill that seeps through your clothes, making outdoor activities uncomfortable and requiring extra layers for warmth while navigating the slick streets.

September Average Humidity in Lesja

This chart illustrates the average monthly humidity levels in Lesja, 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 Lesja 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 Lesja

In Lesja 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 Lesja for better planning.

Maximum UV Index Levels in Lesja for September

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

Data source: Lesja 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 Lesja Compares to Other Months

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

This table compares monthly weather conditions in Lesja, showing how September’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
	Temperature	Precipitation	Humidity	UV
January Weather	-8°C (18°F)	69 mm (2.7 inches)	99%	low
February Weather	-8°C (17°F)	47 mm (1.9 inches)	97%	low
March Weather	-6°C (22°F)	60 mm (2.4 inches)	94%	moderate
April Weather	-2°C (29°F)	56 mm (2.2 inches)	89%	moderate
May Weather	4°C (40°F)	65 mm (2.5 inches)	85%	high
June Weather	10°C (51°F)	78 mm (3.1 inches)	82%	high
July Weather	12°C (53°F)	80 mm (3.2 inches)	84%	high
August Weather	10°C (50°F)	95 mm (3.7 inches)	89%	moderate
September Weather	6°C (43°F)	87 mm (3.4 inches)	92%	moderate
October Weather	1°C (34°F)	98 mm (3.9 inches)	96%	low
November Weather	-4°C (24°F)	71 mm (2.8 inches)	97%	low
December Weather	-7°C (19°F)	76 mm (3.0 inches)	99%	low