December Weather in Os, Norway

Last updated: August 27, 2025

In Os, Norway, the average temperature in December hovers around -6°C (22°F). Expect chilly extremes, with minimums plummeting to -24°C (-10°F) and maximums reaching up to 6°C (43°F). This month brings about 59 mm (2.3 in) of precipitation, typically spread across 16 days, contributing to an average humidity of a staggering 97%.

December Temperature in Os

In December in Os, the average temperature is -6°C (22°F), with maximums reaching 6°C (43°F) and minimums dropping as low as -24°C (-10°F). Travelers should be prepared for cold conditions and pack accordingly to make the most of their visit.

December Weather in Os: Daily Temperature Highs, Lows, and Averages

The chart illustrates December temperature patterns in Os, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Os, December typically has an average temperature of -6°C (22°F), with highs reaching up to 6°C (43°F) and lows dropping to around -24°C (-10°F).

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

December Precipitation in Os

In Os in December, the precipitation amount is 59 mm (2.3 in) and falls over the course of 16 days.

December Precipitation Trends in Os

The chart displays monthly precipitation patterns in Os, with values for each month alongside December’s data, which is highlighted for easy comparison. It shows the amount of precipitation, providing insights into how December’s conditions compare to those of other months. In Os, December typically receives around 59 mm (2.3 inches) of precipitation spread over approximately 16 days.

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

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Millimeters (mm) Inches (in)

December Humidity in Os

In Os in December, humidity is 97%. With an average temperature of -6°C (22°F), this humidity feels like walking through a foggy breath of winter, where every step becomes a challenge and the cold seeps into your bones, making travel uncomfortable and exhausting.

December Average Humidity in Os

This chart illustrates the average monthly humidity levels in Os, with December’s data highlighted for easy comparison. It shows the fluctuation in humidity throughout the year, helping you understand how conditions vary by season. In December, average humidity in Os is approximately 97%, offering insight into how humid the weather typically is during this month.

Data source: Humidity data for December generated using information from the Copernicus Climate Change Service.

December UV Index in Os

In Os in December, the maximum UV index is 1, which corresponds to a low Exposure Category. This means you have a time to burn of 45 minutes. For more details, you can check the Hourly UV Index in Os.

Maximum UV Index Levels in Os for December

The chart shows the monthly maximum UV Index (UVI) for Os in December, 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 December, the maximum UV index in Os typically reaches 1, which falls under the low exposure category.

Data source: Os December 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 December Weather in Os Compares to Other Months

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

This table compares monthly weather conditions in Os, showing how December’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
	Temperature	Precipitation	Humidity	UV
January Weather	-7°C (20°F)	51 mm (2.0 inches)	96%	low
February Weather	-7°C (20°F)	38 mm (1.5 inches)	94%	low
March Weather	-4°C (25°F)	56 mm (2.2 inches)	91%	moderate
April Weather	-1°C (31°F)	55 mm (2.2 inches)	86%	moderate
May Weather	5°C (41°F)	63 mm (2.5 inches)	83%	moderate
June Weather	11°C (52°F)	87 mm (3.4 inches)	81%	high
July Weather	12°C (54°F)	93 mm (3.7 inches)	81%	high
August Weather	10°C (51°F)	108 mm (4.2 inches)	88%	moderate
September Weather	7°C (44°F)	69 mm (2.7 inches)	90%	moderate
October Weather	2°C (36°F)	76 mm (3.0 inches)	93%	low
November Weather	-3°C (26°F)	54 mm (2.1 inches)	95%	low
December Weather	-6°C (22°F)	59 mm (2.3 inches)	97%	low