September Weather in Valderoy, Norway

Last updated: August 27, 2025

In September, the average temperature in Valderoy, Norway hovers around 12°C (53°F), with a minimum dipping to 4°C (40°F) and a maximum reaching up to 19°C (67°F). Expect significant precipitation, totaling 309 mm (12.2 in) over 20 days, alongside a high average humidity of 87%. Prepare accordingly for a season that’s both wet and cozy!

September Temperature in Valderoy

In September in Valderoy, the average temperature is 12°C (53°F). Maximum temperatures can reach 19°C (67°F), while minimums can drop to as low as 4°C (40°F). Overall, it's a pleasant time to visit Valderoy, so pack accordingly for mild weather.

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

The chart illustrates September temperature patterns in Valderoy, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Valderoy, September typically has an average temperature of 12°C (53°F), with highs reaching up to 19°C (67°F) and lows dropping to around 4°C (40°F).

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

September Precipitation in Valderoy

In Valderoy in September, the precipitation amount is 309 mm (12.2 in) over the course of 20 days.

September Precipitation Trends in Valderoy

The chart displays monthly precipitation patterns in Valderoy, 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 Valderoy, September typically receives around 309 mm (12.2 inches) of precipitation spread over approximately 20 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 Valderoy

In Valderoy in September, humidity is 87%. With an average temperature of 12°C (53°F), this humidity feels like a damp blanket enveloping you, making travel uncomfortable and stifling, as the air thickens and clings to your skin, sapping your energy as you navigate the sights.

September Average Humidity in Valderoy

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

In Valderoy 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 Valderoy for better planning.

Maximum UV Index Levels in Valderoy for September

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

Data source: Valderoy 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 Valderoy Compares to Other Months

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

This table compares monthly weather conditions in Valderoy, 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 (36°F)	191 mm (7.5 inches)	85%	low
February Weather	2°C (35°F)	147 mm (5.8 inches)	84%	low
March Weather	3°C (37°F)	170 mm (6.7 inches)	84%	moderate
April Weather	5°C (40°F)	158 mm (6.2 inches)	84%	moderate
May Weather	8°C (46°F)	104 mm (4.1 inches)	84%	moderate
June Weather	12°C (53°F)	108 mm (4.3 inches)	83%	high
July Weather	13°C (56°F)	123 mm (4.8 inches)	86%	high
August Weather	14°C (57°F)	172 mm (6.8 inches)	87%	moderate
September Weather	12°C (53°F)	309 mm (12.2 inches)	87%	moderate
October Weather	8°C (47°F)	313 mm (12.3 inches)	87%	low
November Weather	5°C (41°F)	214 mm (8.4 inches)	87%	low
December Weather	3°C (37°F)	210 mm (8.2 inches)	84%	low