September Weather in Hopen, Norway

Last updated: August 27, 2025

In September, the average temperature in Hopen, Norway is a mild 12°C (55°F). Expect temperatures to range from a comfortable 7°C (45°F) to a brisk 18°C (65°F). However, be prepared for some rain, as precipitation averages 233 mm (9.2 in) over 19 days. With an average humidity of 89%, the air can feel quite damp, so pack accordingly!

September Temperature in Hopen

In September in Hopen, the average temperature is 12°C (55°F), with a maximum that can reach 18°C (65°F) and a minimum as low as 7°C (45°F). This mild climate makes it a comfortable time for travelers to explore and enjoy outdoor activities in Hopen.

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

The chart illustrates September temperature patterns in Hopen, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Hopen, September typically has an average temperature of 12°C (55°F), with highs reaching up to 18°C (65°F) and lows dropping to around 7°C (45°F).

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

September Precipitation in Hopen

In Hopen in September, the precipitation amount is 233 mm (9.2 in) over a period of 19 days.

September Precipitation Trends in Hopen

The chart displays monthly precipitation patterns in Hopen, 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 Hopen, September typically receives around 233 mm (9.2 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 Hopen

In Hopen in September, humidity is 89%. With an average temperature of 12°C (55°F), this humidity feels like a damp chill that seeps into your bones, making it feel much colder than the thermometer suggests and potentially complicating your travel plans.

September Average Humidity in Hopen

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

In Hopen 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 Hopen, you can check the information here.

Maximum UV Index Levels in Hopen for September

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

Data source: Hopen 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 Hopen Compares to Other Months

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

This table compares monthly weather conditions in Hopen, 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 (40°F)	142 mm (5.6 inches)	93%	low
February Weather	4°C (39°F)	103 mm (4.1 inches)	92%	low
March Weather	4°C (39°F)	132 mm (5.2 inches)	89%	low
April Weather	5°C (41°F)	100 mm (3.9 inches)	84%	moderate
May Weather	7°C (45°F)	68 mm (2.7 inches)	81%	moderate
June Weather	11°C (52°F)	72 mm (2.8 inches)	81%	high
July Weather	13°C (55°F)	72 mm (2.8 inches)	81%	high
August Weather	14°C (57°F)	128 mm (5.1 inches)	87%	moderate
September Weather	12°C (55°F)	233 mm (9.2 inches)	89%	moderate
October Weather	10°C (49°F)	231 mm (9.1 inches)	91%	low
November Weather	7°C (45°F)	179 mm (7.0 inches)	92%	low
December Weather	5°C (41°F)	154 mm (6.1 inches)	94%	low