Last updated: March 17, 2025
In Reykjavik, Iceland, December offers a unique blend of winter wonder and chilly atmosphere, where temperatures fluctuate from a maximum of 10°C (50°F) to a minimum of -13°C (9°F), averaging around 0°C (33°F). The month is characterized by high humidity levels at 95%, creating a crisp yet often damp environment. Visitors can expect a substantial precipitation total of 106 mm (4.2 in) over approximately 17 days, making it a pivotal time for snow and rain alike. This combination of factors presents a captivating showcase of Iceland's winter landscape, inviting both adventure and contemplation during the festive season.
In December, Reykjavik experiences a chilly embrace as winter tightens its grip. With minimum temperatures plummeting to -13°C (9°F) and an average hovering around 0°C (33°F), the capital of Iceland offers a stark contrast to the holiday cheer often felt in warmer locales. However, the maximum temperature reaching 10°C (50°F) allows for moments of respite in the frosty air. This month's temperature trends mirror the transition from the intense cold of November, where the mercury dipped to -10°C (15°F), to the more stable averages observed in January. As daylight wanes, Reykjavik transforms into a winter wonderland, inviting visitors to relish the beauty of the season against a backdrop of icy splendor.
December in Reykjavik witnesses a notable shift as the city transitions into winter, bringing an average precipitation of 106 mm (4.2 in) over 17 days. This amount is slightly above the levels seen in both November and October, suggesting a trend of increasing moisture as the year draws to a close. Compared to the summer months, where precipitation dips significantly, December's rainfall helps maintain the lush landscapes associated with Iceland's colder months. As the days grow shorter, the consistent wet weather enhances the cozy atmosphere of the city's winter season, creating a picturesque backdrop for the festive celebrations.
December in Reykjavik ushers in a notably humid atmosphere, with levels reaching 95%—a slight decrease from the preceding months but still emblematic of the region's characteristic moisture. As the year draws to a close, this lingering humidity reflects a broader trend observed throughout the seasons. From January's peak of 96% humidity to the warmer months of summer, when levels drop to 81% in June, the city's moisture levels generally trend downward as temperatures rise. However, as winter sets in, humidity begins to reclaim its dominance, resulting in that familiar chill in the air. Thus, December showcases a seamless transition from the autumnal dampness into the deep winter weather, asserting Reykjavik's status as a place of captivating contrasts.
In December, Reykjavik, Iceland, experiences a consistently low UV Index of 1, similar to the preceding months of November and January. This indicates minimal UV exposure, keeping the burn time at a safe 45 minutes for those venturing outdoors. The gradual increase in UV Index throughout the spring and summer months showcases the seasonal variability typical to Reykjavik, with values peaking at 6 in June and July, prompting a heightened awareness of skin protection during those sun-filled days. However, as winter settles in, the emphasis shifts back towards low exposure, making December an ideal time for enjoying outdoor activities without the worry of sunburn. For more details on UV Index trends, visit Reykjavik UV Index.
UV Risk Categories
As December arrives in Reykjavik, the days grow notably shorter, with the city basking in only 24 hours of sunshine throughout the month. This stark contrast to the sunlight-filled months of May and June, which boast 337 and 312 hours respectively, highlights the dramatic seasonal shift in Iceland. While residents eagerly anticipate the return of longer days, December's sunlight is a reminder of the enchanting winter landscapes that embrace the city, as the opportunity for cozy moments becomes ever more appealing. Following November's 69 hours, the drop in daylight in December sets the stage for the long, dark Nordic winter, yet it also creates a unique charm, with twinkling lights and festive cheer illuminating Reykjavik’s streets.
In December, Reykjavik sees a modest chance of sunshine, with expectations hovering around 18%. This is part of a broader trend in the colder months, where the likelihood of sunny days tends to decline as winter sets in. For instance, January offers slightly better odds at 30%, but the chances drop significantly through February and March, with figures plummeting to just 17% and 14%, respectively. Interestingly, April provides a slight reprieve, climbing up to 25%, before the summer months arrive with more promise. However, if you're dreaming of sunshine in December, be prepared for mostly overcast skies, as the bleak midwinter casts a long shadow over Reykjavik's chance of clear, sunny days.
As December rolls into Reykjavik, Iceland, the city experiences its shortest days of the year, boasting only four hours of daylight. This stark reduction from the twenty hours of sun in June is a vivid reminder of the region's dramatic seasonal shifts. Following a gradual decline from November’s six hours, December's brief sunlight invites residents to revel in the cozy charm of winter. As the year progresses into January, daylight begins to extend once more, setting the stage for a gradual return to longer, brighter days. The crisp air and long nights create a unique atmosphere, highlighting the beauty of Icelandic winters and the anticipation of returning light as the cycle continues.
As December settles over Reykjavik, the average wind speed of 4.0 m/s (9 mph) marks a slight drop from the bustling autumn months. This gentle breeze creates a peaceful atmosphere, perfect for enjoying the city's stunning winter landscapes. Notably, the wind speeds peak in September at 4.8 m/s (11 mph), gradually declining as the year winds down. February records another low with 4.4 m/s (10 mph), while most of the colder months, including December, hover around the 4 m/s mark. This trend illustrates a transition from the more vigorous winds of autumn to the calmer, cozy conditions of winter, inviting both locals and visitors to embrace the enchanting charm of Reykjavik’s December landscape.
The weather in Reykjavik changes throughout the year, offering a unique experience in each season. Below is a month-by-month comparison of December's weather with other months, highlighting differences in temperature, precipitation, and other key factors. Click on each section to discover seasonal trends in Reykjavik and find detailed weather information for every month.
In December, temperatures in Reykjavik range from a minimum of -13°C (9°F) to a maximum of 10°C (50°F), with an average of 0°C (33°F). The month sees significant precipitation, totaling 106 mm (4.2 in) over 17 days, accompanied by high humidity levels of 95%. January shares similar temperature ranges with a minimum of -13°C (8°F) and an average of 0°C (32°F), but experiences slightly more precipitation at 113 mm (4.5 in) over 16 days and marginally higher humidity at 96%. The weather remains consistently cold and damp, making both months quite similar, yet January tends to be slightly wetter. For more detailed information, check Reykjavik weather in January.
December and February both experience cold temperatures, but February tends to be slightly chillier, with minimum temperatures dropping to -18°C (1°F) compared to December’s -13°C (9°F). The average temperatures remain the same at 0°C (33°F), while February has a max temperature of 8°C (47°F), just a bit lower than December's 10°C (50°F). Precipitation also increases in February, with 125 mm (4.9 in) over 18 days compared to December's 106 mm (4.2 in) over 17 days, maintaining a consistently high humidity level of 95% in both months. For more information on specific weather patterns, check out Reykjavik weather in February.
December and March in Reykjavik present a transition from the depths of winter to the cusp of spring. In December, temperatures can drop as low as -13°C (9°F) with an average of 0°C (33°F) and a maximum of 10°C (50°F). The month experiences considerable precipitation, averaging 106 mm (4.2 in) over approximately 17 days, accompanied by high humidity at 95%. In contrast, March sees a slight rise in average temperature, with a minimum still around -13°C (9°F) but an average of 1°C (34°F) and a maximum of 9°C (49°F). Precipitation remains similar, at 103 mm (4.1 in) over 18 days, while humidity slightly decreases to 94%. This subtle shift highlights the gradual warming and lingering wet conditions typical of early spring, making it an interesting time for weather observation. For more details, you can explore Reykjavik weather in March.
December and April present contrasting weather experiences. December is characterized by colder temperatures, with a minimum of -13°C (9°F) and an average around 0°C (33°F), while April sees a milder minimum of -8°C (17°F) and an average of 4°C (40°F). Although both months experience significant precipitation—106 mm (4.2 in) in December and 121 mm (4.8 in) in April—April has slightly higher humidity at 87%, compared to December's 95%. Furthermore, both months see a comparable number of rainy days, with December having 17 and April 18. For more details on the weather specifics in April, you can visit Reykjavik weather in April.
December and May present a striking contrast in weather. In December, temperatures can plunge to a minimum of -13°C (9°F), with an average around 0°C (33°F) and highs reaching 10°C (50°F). The month is characterized by high humidity at 95% and significant precipitation of 106 mm (4.2 in) over 17 days. In contrast, May offers milder conditions, with temperatures ranging from a minimum of -3°C (27°F) to an average of 7°C (44°F) and maximums of 15°C (60°F). Although precipitation slightly increases to 113 mm (4.4 in) over 18 days, the humidity drops to a more comfortable 85%. For more details on the weather in May, check out Reykjavik weather in May.
December and June present stark contrasts in weather patterns. In December, temperatures can plummet as low as -13°C (9°F) with an average around 0°C (33°F) and a maximum of 10°C (50°F). This winter month experiences significant precipitation, totaling 106 mm (4.2 in) over about 17 days, coupled with high humidity levels at 95%. Conversely, June brings a milder climate with minimum temperatures around 2°C (36°F) and a comfortable average of 9°C (49°F), reaching up to 18°C (65°F) at the peak. Precipitation decreases slightly to 92 mm (3.6 in) over 16 days, with humidity dropping to 81%. For more details, check out Reykjavik weather in June.
December and July present strikingly different weather conditions. In December, temperatures can drop as low as -13°C (9°F), with an average hovering around 0°C (33°F) and a maximum reaching 10°C (50°F). The month is characterized by high humidity at 95% and considerable precipitation, averaging 106 mm (4.2 in) over 17 days. In contrast, July offers a much milder climate, with temperatures ranging from a minimum of 4°C (40°F) to a comfortable average of 11°C (53°F) and a high of 21°C (71°F). Although July experiences less precipitation at 75 mm (3.0 in) over 16 rainy days and slightly lower humidity at 86%, it still provides a far more pleasant environment. For more details about the weather in July, you can check Reykjavik weather in July.
When comparing the weather in December and August, it's clear that December is colder and wetter. In December, temperatures can drop as low as -13°C (9°F) with an average of 0°C (33°F) and a maximum of 10°C (50°F). The month also sees an average precipitation of 106 mm (4.2 in) spread over 17 days, combined with a high humidity of 95%. In contrast, August offers a milder experience, with temperatures ranging from a minimum of 5°C (41°F) to a comfortable average of 11°C (52°F) and maximums reaching 20°C (68°F). Although August has slightly less precipitation at 83 mm (3.3 in) over 15 days, its humidity is noticeably lower at 88%. For more details on August weather, you can check Reykjavik weather in August.
When comparing December and September weather, it’s clear that December experiences much colder conditions, with average temperatures hovering around 0°C (33°F) and dipping as low as -13°C (9°F). In contrast, September offers a milder climate, with average temperatures of 8°C (47°F) and maximums reaching 15°C (60°F). Precipitation is notable in both months, but September sees slightly higher rainfall at 164 mm (6.5 in) across 20 days, compared to December's 106 mm (4.2 in) over 17 days. Humidity levels are also high in both months, with December at 95% and September at 92%. For a detailed look at monthly weather patterns, check the following link: Reykjavik weather in September.
When comparing the weather in December and October, we notice a significant drop in temperatures as winter fully sets in. December sees a minimum temperature of -13°C (9°F) and an average of 0°C (33°F), while October’s temperatures are milder, ranging from a minimum of -4°C (25°F) to an average of 5°C (42°F). Precipitation is quite similar, with December recording 106 mm (4.2 in) over 17 days and October experiencing slightly less, at 96 mm (3.8 in) over 16 days. Humidity is slightly higher in December at 95%, compared to October's 93%. For a detailed overview of what to expect during October, you can visit Reykjavik weather in October.
In comparing the weather between December and November, we can observe that December is slightly colder with an average temperature hovering around 0°C (33°F), while November averages 2°C (35°F). December experiences lower minimum temperatures, dipping to -13°C (9°F), compared to November’s minimum of -10°C (15°F). Precipitation levels are quite similar, with December receiving 106 mm (4.2 in) over 17 days, just slightly higher than November's 105 mm (4.1 in) over 15 days. Additionally, December's humidity is marginally higher at 95%, compared to 94% in November. For more detailed weather information, you can check Reykjavik weather in November.
As December blankets Reykjavik in winter's embrace, the city experiences a significant shift in weather compared to other months. The temperatures drop considerably, with the brisk chill making the average feel much colder. Alongside frequent precipitation, which graces the city for about half the month, the humidity peaks at a notable 95%, creating a raw and atmospheric environment. While the occasional milder days may flirt with 10°C, the nights can plunge into a frosty -13°C. This stark contrast makes December a magical yet challenging time for both residents and visitors. For a deeper understanding of the city's overarching weather patterns throughout the year, be sure to explore Reykjavik Climate.