December Weather in Otta, Norway

Last updated: August 27, 2025

In December, the average temperature in Otta, Norway hovers around -8°C (17°F), with a chilling minimum of -25°C (-13°F) and a maximum of 4°C (39°F). This period also brings about 63 mm (2.5 in) of precipitation over approximately 16 days, contributing to an exceptionally high average humidity of 99%. Prepare for some frosty days ahead!

December Temperature in Otta

In December in Otta, the average temperature is -8°C (17°F), with maximums reaching 4°C (39°F) and minimums plummeting to -25°C (-13°F). Travelers should be prepared for cold conditions and dress appropriately to enjoy their time in Otta.

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

The chart illustrates December temperature patterns in Otta, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Otta, December typically has an average temperature of -8°C (17°F), with highs reaching up to 4°C (39°F) and lows dropping to around -25°C (-13°F).

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

December Precipitation in Otta

In Otta in December, the precipitation amount is 63 mm (2.5 in), occurring over the course of 16 days.

December Precipitation Trends in Otta

The chart displays monthly precipitation patterns in Otta, 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 Otta, December typically receives around 63 mm (2.5 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 Otta

In Otta in December, humidity is 99%. With an average temperature of -8°C (17°F), this humidity feels like a biting coldness that seeps into your bones, making outdoor excursions an uncomfortable and frigid experience, as the damp air clings relentlessly to your skin.

December Average Humidity in Otta

This chart illustrates the average monthly humidity levels in Otta, 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 Otta is approximately 99%, 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 Otta

In Otta 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 Otta.

Maximum UV Index Levels in Otta for December

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

Data source: Otta 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 Otta Compares to Other Months

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

This table compares monthly weather conditions in Otta, showing how December’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
	Temperature	Precipitation	Humidity	UV
January Weather	-9°C (16°F)	47 mm (1.9 inches)	99%	low
February Weather	-9°C (17°F)	39 mm (1.5 inches)	97%	low
March Weather	-5°C (24°F)	43 mm (1.7 inches)	94%	moderate
April Weather	0°C (32°F)	33 mm (1.3 inches)	89%	moderate
May Weather	6°C (42°F)	67 mm (2.6 inches)	85%	high
June Weather	12°C (53°F)	77 mm (3.0 inches)	82%	high
July Weather	13°C (55°F)	81 mm (3.2 inches)	84%	high
August Weather	11°C (52°F)	102 mm (4.0 inches)	89%	moderate
September Weather	7°C (44°F)	79 mm (3.1 inches)	92%	moderate
October Weather	2°C (35°F)	85 mm (3.3 inches)	96%	low
November Weather	-5°C (24°F)	66 mm (2.6 inches)	97%	low
December Weather	-8°C (17°F)	63 mm (2.5 inches)	99%	low