September Weather in Granvin, Norway

Last updated: August 27, 2025

In September, the average temperature in Granvin, Norway hovers around 8°C (48°F), with a minimum drop to -1°C (31°F) and a maximum rise to 20°C (68°F). During this month, expect 204 mm (8.0 in) of precipitation spread over approximately 20 days, contributing to a notably high average humidity of 93%.

September Temperature in Granvin

In September in Granvin, the average temperature is 8°C (48°F). Maximum temperatures can reach 20°C (68°F), while the minimum can drop as low as -1°C (31°F). Be prepared for a mix of mild and chilly weather during your travels.

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

The chart illustrates September temperature patterns in Granvin, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Granvin, September typically has an average temperature of 8°C (48°F), with highs reaching up to 20°C (68°F) and lows dropping to around -1°C (31°F).

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

September Precipitation in Granvin

In Granvin in September, the precipitation amount is 204 mm (8.0 in) over the course of 20 days.

September Precipitation Trends in Granvin

The chart displays monthly precipitation patterns in Granvin, 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 Granvin, September typically receives around 204 mm (8.0 inches) of precipitation spread over approximately 20 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 Granvin

In Granvin in September humidity is 93%. With an average temperature of 8°C (48°F), this humidity feels like a heavy blanket enveloping you, making traveling quite uncomfortable as the dampness seeps into your clothing and sticks to your skin, turning every step into a slow, weary slog.

September Average Humidity in Granvin

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

In Granvin 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 Granvin for better planning.

Maximum UV Index Levels in Granvin for September

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

Data source: Granvin 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 Granvin Compares to Other Months

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

This table compares monthly weather conditions in Granvin, 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 (26°F)	169 mm (6.7 inches)	98%	low
February Weather	-4°C (25°F)	153 mm (6.0 inches)	96%	low
March Weather	-2°C (29°F)	170 mm (6.7 inches)	94%	moderate
April Weather	1°C (34°F)	118 mm (4.6 inches)	89%	moderate
May Weather	5°C (42°F)	81 mm (3.2 inches)	86%	high
June Weather	11°C (52°F)	123 mm (4.9 inches)	83%	high
July Weather	13°C (56°F)	127 mm (5.0 inches)	87%	high
August Weather	12°C (53°F)	145 mm (5.7 inches)	91%	moderate
September Weather	8°C (48°F)	204 mm (8.0 inches)	93%	moderate
October Weather	4°C (40°F)	228 mm (9.0 inches)	95%	low
November Weather	0°C (33°F)	178 mm (7.0 inches)	97%	low
December Weather	-2°C (29°F)	198 mm (7.8 inches)	97%	low