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December Weather in Gardur, Iceland

Last updated: August 23, 2025

In December, the average temperature in Gardur, Iceland hovers around 3°C (38°F), with minimums dipping as low as -5°C (23°F) and maximums reaching up to 9°C (49°F). Expect 124 mm (4.9 in) of precipitation spread over 19 days, contributing to a notably high average humidity of 80%. Stay prepared for a chill and damp month ahead!

December Temperature in Gardur

In December in Gardur, the average temperature is 3°C (38°F). The maximum can reach 9°C (49°F), while the minimum can drop to as low as -5°C (23°F). Travelers should be prepared for chilly weather and pack accordingly.

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

The chart illustrates December temperature patterns in Gardur, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Gardur, December typically has an average temperature of 3°C (38°F), with highs reaching up to 9°C (49°F) and lows dropping to around -5°C (23°F).
JanFebMarAprMayJunJulAugSepOctNovDec363637404448515248443937
Data source: Temperature data for Gardur 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 Gardur

In Gardur in December, the precipitation amount is 124 mm (4.9 in) spread over 19 days.

December Precipitation Trends in Gardur

The chart displays monthly precipitation patterns in Gardur, 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 Gardur, December typically receives around 124 mm (4.9 inches) of precipitation spread over approximately 19 days.
JanFebMarAprMayJunJulAugSepOctNovDec120125116131111817791179125126124
Data source: Precipitation data for December generated using information from the Copernicus Climate Change Service.
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December Humidity in Gardur

In Gardur in December, humidity is 80%. With an average temperature of 3°C (38°F), this humidity feels like a chilly dampness that clings to your skin, making traveling uncomfortable and forcing you to bundle up just to step outside.

December Average Humidity in Gardur

This chart illustrates the average monthly humidity levels in Gardur, 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 Gardur is approximately 80%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec80%77%82%80%85%85%87%88%85%85%81%80%
Data source: Humidity data for December generated using information from the Copernicus Climate Change Service.

December UV Index in Gardur

In Gardur 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 Gardur.

Maximum UV Index Levels in Gardur for December

The chart shows the monthly maximum UV Index (UVI) for Gardur 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 Gardur typically reaches 1, which falls under the low exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec112356643211
Data source: Gardur 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 Gardur Compares to Other Months

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

This table compares monthly weather conditions in Gardur, showing how December’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather2°C (36°F)120 mm (4.7 inches)80%low
February Weather2°C (36°F)125 mm (4.9 inches)77%low
March Weather3°C (37°F)116 mm (4.6 inches)82%low
April Weather5°C (41°F)131 mm (5.2 inches)80%moderate
May Weather6°C (44°F)111 mm (4.4 inches)85%moderate
June Weather9°C (48°F)81 mm (3.2 inches)85%high
July Weather10°C (51°F)77 mm (3.0 inches)87%high
August Weather11°C (52°F)91 mm (3.6 inches)88%moderate
September Weather9°C (49°F)178 mm (7.0 inches)85%moderate
October Weather7°C (44°F)125 mm (4.9 inches)85%low
November Weather4°C (40°F)126 mm (5.0 inches)81%low
December Weather3°C (38°F)124 mm (4.9 inches)80%low

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