September Weather in Isdalsto, Norway

Last updated: August 27, 2025

In Isdalsto, Norway, the average temperature in September is a cool 12°C (54°F), with lows dipping to 5°C (41°F) and highs reaching up to 20°C (68°F). Expect approximately 330 mm (13.0 in) of precipitation over 19 days, contributing to an average humidity of a humid 93%.

September Temperature in Isdalsto

In September in Isdalsto, the average temperature is 12°C (54°F). The maximum can reach 20°C (68°F), and the minimum can be as low as 5°C (41°F). It's an ideal time for travelers to enjoy mild weather while exploring the sights.

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

The chart illustrates September temperature patterns in Isdalsto, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Isdalsto, September typically has an average temperature of 12°C (54°F), with highs reaching up to 20°C (68°F) and lows dropping to around 5°C (41°F).

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

September Precipitation in Isdalsto

In Isdalsto in September, the total precipitation amount averages 330 mm (13.0 in) over the course of 19 days.

September Precipitation Trends in Isdalsto

The chart displays monthly precipitation patterns in Isdalsto, 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 Isdalsto, September typically receives around 330 mm (13.0 inches) of precipitation spread over approximately 19 days.

Data source: Precipitation data for September generated using information from the Copernicus Climate Change Service.

Choose your preferred precipitation unit

Millimeters (mm) Inches (in)

September Humidity in Isdalsto

In Isdalsto in September, humidity is 93%. With an average temperature of 12°C (54°F), this humidity feels like a dense blanket wrapping around you, making every outdoor excursion feel heavier and more exhausting than it truly is, turning sightseeing into a test of endurance.

September Average Humidity in Isdalsto

This chart illustrates the average monthly humidity levels in Isdalsto, 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 Isdalsto is approximately 93%, 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 Isdalsto

In Isdalsto 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 Isdalsto for better planning.

Maximum UV Index Levels in Isdalsto for September

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

Data source: Isdalsto 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 Isdalsto Compares to Other Months

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

This table compares monthly weather conditions in Isdalsto, showing how September’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
	Temperature	Precipitation	Humidity	UV
January Weather	3°C (38°F)	210 mm (8.3 inches)	98%	low
February Weather	2°C (36°F)	203 mm (8.0 inches)	96%	low
March Weather	4°C (39°F)	202 mm (8.0 inches)	94%	moderate
April Weather	6°C (43°F)	124 mm (4.9 inches)	89%	moderate
May Weather	9°C (49°F)	86 mm (3.4 inches)	86%	moderate
June Weather	13°C (56°F)	149 mm (5.9 inches)	83%	high
July Weather	15°C (58°F)	141 mm (5.6 inches)	87%	high
August Weather	15°C (59°F)	236 mm (9.3 inches)	91%	moderate
September Weather	12°C (54°F)	330 mm (13.0 inches)	93%	moderate
October Weather	9°C (49°F)	360 mm (14.2 inches)	95%	low
November Weather	6°C (43°F)	248 mm (9.8 inches)	97%	low
December Weather	4°C (39°F)	259 mm (10.2 inches)	97%	low