December Weather in Groa, Norway

Last updated: August 27, 2025

The average temperature in Groa, Norway during December hovers around -4°C (25°F). Expect temperatures to dip as low as -19°C (-2°F) and occasionally rise to 6°C (43°F). You may encounter precipitation totaling 150 mm (5.9 in) over 16 days, accompanied by a high average humidity of 94%—perfect for a chilly, immersive winter experience!

December Temperature in Groa

In December in Groa, the average temperature is -4°C (25°F). The maximum can reach 6°C (43°F), while the minimum can drop as low as -19°C (-2°F). Travelers should be prepared for chilly weather and dress warmly for outdoor activities.

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

The chart illustrates December temperature patterns in Groa, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Groa, December typically has an average temperature of -4°C (25°F), with highs reaching up to 6°C (43°F) and lows dropping to around -19°C (-2°F).

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

December Precipitation in Groa

In Groa in December, the precipitation amount is 150 mm (5.9 in) spread over 16 days.

December Precipitation Trends in Groa

The chart displays monthly precipitation patterns in Groa, 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 Groa, December typically receives around 150 mm (5.9 inches) of precipitation spread over approximately 16 days.

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

Choose your preferred precipitation unit

Millimeters (mm) Inches (in)

December Humidity in Groa

In Groa in December, humidity is 94%. With an average temperature of -4°C (25°F), this humidity feels like a bitter chill that seeps into your bones, making travel outside uncomfortable and necessitating extra layers to stay warm and dry.

December Average Humidity in Groa

This chart illustrates the average monthly humidity levels in Groa, 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 Groa is approximately 94%, 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 Groa

In Groa 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 Groa.

Maximum UV Index Levels in Groa for December

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

Data source: Groa 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 Groa Compares to Other Months

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

This table compares monthly weather conditions in Groa, showing how December’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
	Temperature	Precipitation	Humidity	UV
January Weather	-4°C (25°F)	137 mm (5.4 inches)	93%	low
February Weather	-4°C (25°F)	99 mm (3.9 inches)	92%	low
March Weather	-2°C (28°F)	140 mm (5.5 inches)	89%	moderate
April Weather	1°C (33°F)	140 mm (5.5 inches)	84%	moderate
May Weather	5°C (42°F)	100 mm (3.9 inches)	81%	high
June Weather	11°C (52°F)	128 mm (5.0 inches)	81%	high
July Weather	13°C (55°F)	145 mm (5.7 inches)	81%	high
August Weather	11°C (53°F)	171 mm (6.7 inches)	87%	moderate
September Weather	8°C (47°F)	148 mm (5.8 inches)	89%	moderate
October Weather	3°C (37°F)	179 mm (7.0 inches)	91%	low
November Weather	-2°C (28°F)	118 mm (4.6 inches)	92%	low
December Weather	-4°C (25°F)	150 mm (5.9 inches)	94%	low