September Weather in Surnadal, Norway

Last updated: August 27, 2025

In September, the average temperature in Surnadal, Norway hovers around 10°C (50°F), with a possible chill dipping to a minimum of 1°C (34°F) and peaks reaching up to 21°C (70°F). Expect 162 mm (6.4 in) of precipitation spread over 18 days, making for a humid environment with an average humidity of 89%. Be prepared for a mix of mild temperatures and moisture!

September Temperature in Surnadal

In September in Surnadal, the average temperature is 10°C (50°F). Maximums can reach 21°C (70°F), while minimums can drop as low as 1°C (34°F). This range of temperatures makes it a great time for travelers to enjoy outdoor activities while also being prepared for cooler evenings.

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

The chart illustrates September temperature patterns in Surnadal, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Surnadal, September typically has an average temperature of 10°C (50°F), with highs reaching up to 21°C (70°F) and lows dropping to around 1°C (34°F).

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

September Precipitation in Surnadal

In Surnadal in September, the total precipitation amount is 162 mm (6.4 in) over the course of 18 days.

September Precipitation Trends in Surnadal

The chart displays monthly precipitation patterns in Surnadal, 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 Surnadal, September typically receives around 162 mm (6.4 inches) of precipitation spread over approximately 18 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 Surnadal

In Surnadal in September, humidity is 89%. With an average temperature of 10°C (50°F), this humidity feels like a dense blanket wrapping around you, making travel feel damp and chilly, and urging you to dress in layers for comfort.

September Average Humidity in Surnadal

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

In Surnadal 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 Surnadal for better planning.

Maximum UV Index Levels in Surnadal for September

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

Data source: Surnadal 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 Surnadal Compares to Other Months

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

This table compares monthly weather conditions in Surnadal, showing how September’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
	Temperature	Precipitation	Humidity	UV
January Weather	-2°C (28°F)	139 mm (5.5 inches)	93%	low
February Weather	-2°C (28°F)	115 mm (4.5 inches)	92%	low
March Weather	0°C (32°F)	155 mm (6.1 inches)	89%	moderate
April Weather	3°C (37°F)	146 mm (5.7 inches)	84%	moderate
May Weather	7°C (45°F)	106 mm (4.2 inches)	81%	moderate
June Weather	13°C (55°F)	124 mm (4.9 inches)	81%	high
July Weather	14°C (58°F)	147 mm (5.8 inches)	81%	high
August Weather	13°C (55°F)	173 mm (6.8 inches)	87%	moderate
September Weather	10°C (50°F)	162 mm (6.4 inches)	89%	moderate
October Weather	5°C (41°F)	180 mm (7.1 inches)	91%	low
November Weather	-1°C (31°F)	128 mm (5.0 inches)	92%	low
December Weather	-2°C (28°F)	158 mm (6.2 inches)	94%	low