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December Weather in Olen, Norway

Last updated: August 27, 2025

In December, the average temperature in Olen, Norway hovers around 3°C (38°F). Prepare for chilly days, as temperatures can dip to a minimum of -7°C (20°F), while the milder days may warm up to 11°C (51°F). Expect significant precipitation, with 227 mm (8.9 in) falling over 20 days, and don't forget the high humidity, averaging around 90%—perfect for cozy indoor activities!

December Temperature in Olen

In December in Olen, the average temperature is 3°C (38°F), with a maximum that can reach 11°C (51°F) and a minimum that can drop to as low as -7°C (20°F). Travelers should pack warm clothing and be prepared for chilly conditions during this month.

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

The chart illustrates December temperature patterns in Olen, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Olen, December typically has an average temperature of 3°C (38°F), with highs reaching up to 11°C (51°F) and lows dropping to around -7°C (20°F).
JanFebMarAprMayJunJulAugSepOctNovDec363538435058605954484237
Data source: Temperature data for Olen generated using information from the Copernicus Climate Change Service.
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The average of daily temperatures (24 hours) calculated across all days in the month.

December Precipitation in Olen

In Olen in December, the precipitation amount is 227 mm (8.9 in) over a span of 20 days.

December Precipitation Trends in Olen

The chart displays monthly precipitation patterns in Olen, 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 Olen, December typically receives around 227 mm (8.9 inches) of precipitation spread over approximately 20 days.
JanFebMarAprMayJunJulAugSepOctNovDec179187190122115165167252253330225227
Data source: Precipitation data for December generated using information from the Copernicus Climate Change Service.
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December Humidity in Olen

In Olen in December humidity is 90%. With an average temperature of 3°C (38°F), this humidity feels like a damp chill wrapping around you, making travel uncomfortable as the cold penetrates your clothing while the heavy moisture lingers in the air.

December Average Humidity in Olen

This chart illustrates the average monthly humidity levels in Olen, 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 Olen is approximately 90%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec92%90%90%87%84%81%86%87%90%92%93%91%
Data source: Humidity data for December generated using information from the Copernicus Climate Change Service.

December UV Index in Olen

In Olen 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 Olen.

Maximum UV Index Levels in Olen for December

The chart shows the monthly maximum UV Index (UVI) for Olen 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 Olen typically reaches 1, which falls under the low exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec113457654211
Data source: Olen 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 Olen Compares to Other Months

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

This table compares monthly weather conditions in Olen, showing how December’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather2°C (36°F)178 mm (7.0 inches)92%low
February Weather2°C (35°F)187 mm (7.4 inches)90%low
March Weather3°C (39°F)190 mm (7.5 inches)90%moderate
April Weather6°C (44°F)121 mm (4.8 inches)87%moderate
May Weather10°C (51°F)115 mm (4.5 inches)84%moderate
June Weather14°C (58°F)165 mm (6.5 inches)81%high
July Weather15°C (60°F)167 mm (6.6 inches)86%high
August Weather15°C (59°F)252 mm (9.9 inches)87%moderate
September Weather12°C (55°F)253 mm (10.0 inches)90%moderate
October Weather9°C (48°F)330 mm (13.0 inches)92%low
November Weather5°C (42°F)225 mm (8.9 inches)93%low
December Weather3°C (38°F)227 mm (8.9 inches)90%low

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