December Weather in Reykjanesbaer, Iceland

Last updated: March 17, 2025

In December, Reykjanesbaer, Iceland experiences a chill that encapsulates the essence of winter, with maximum temperatures reaching 9°C (49°F) and averages hovering around 2°C (37°F). The biting cold can plunge to a minimum of -6°C (21°F), reminding residents and visitors alike of the fierce beauty of the Arctic landscape. With 119 mm (4.7 in) of precipitation over approximately 18 days, the month is characterized by a blend of rain and snow, contributing to a humidity level of 80% that envelops the region in a chilly embrace. The weather in December sets a perfect backdrop for experiencing the stunning contrasts of Icelandic winter.

December Temperature in Reykjanesbaer

December in Reykjanesbær, Iceland, ushers in the heart of winter, where temperatures reflect the icy embrace of the season. With a chilling minimum of -6°C (21°F) and a typical average settling around 2°C (37°F), residents and visitors alike feel the brisk air. The maximum temperatures reach just 9°C (49°F), marking this month as one of the coldest in the region. As December progresses, the temperature trends reveal a consistent wintry vibe, notably similar to the preceding months of November and January, where the cold lingers with slight variations. This period not only invites cozy indoor activities but also offers the enchanting allure of Iceland's captivating winter landscapes.

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

The chart illustrates December temperature patterns in Reykjanesbaer, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends.
JanFebMarAprMayJunJulAugSepOctNovDec353636404448525248433836
Data source: Temperature data for Reykjanesbaer 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 Reykjanesbaer

December in Reykjanesbaer, Iceland, showcases a consistent precipitation pattern, with 119 mm (4.7 in) of rain recorded over 18 days. This aligns perfectly with the previous months, where both October and November also saw 119 mm of rainfall. Over the winter months, the region maintains a steady rhythm, with precipitation levels typically hovering between 110 mm and 133 mm, emphasizing a trend of relatively high moisture as the year draws to a close. Interestingly, December's precipitation days match November's, highlighting the region's typical winter weather, where rain or snow can be expected nearly every other day. As the year ends, Reykjanesbaer's landscape remains lush and vibrant, a testament to its wet, yet mesmerizing, winter climate.

December Precipitation Trends in Reykjanesbaer

The chart displays monthly precipitation patterns in Reykjanesbaer, 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.
JanFebMarAprMayJunJulAugSepOctNovDec117126110133115877889171119119119
Data source: Precipitation data for December generated using information from the Copernicus Climate Change Service.
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December Humidity in Reykjanesbaer

In Reykjanesbær, Iceland, December brings a return to a moderate humidity level of 80%, closely aligning with the averages seen earlier in the year. After a gradual rise throughout the summer months, peaking at 88% in August, humidity levels start to recede, demonstrating a seasonal shift as winter approaches. The trend portrays a significant fluctuation, with the highest readings occurring in the warmest months and values stabilizing in late fall and early winter. This consistent December figure mirrors the humidity levels of the preceding months in April and November, suggesting a characteristic stability in Reykjavik's winter climate, where moisture remains a significant aspect of the region's charm and character.

December Average Humidity in Reykjanesbaer

This chart illustrates the average monthly humidity levels in Reykjanesbaer, with December's data highlighted for easy comparison. It shows the fluctuation in humidity throughout the year, allowing you to see how December's humidity levels compare to other months.
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 Reykjanesbaer

As the year winds down, December in Reykjanesbaer maintains a consistent UV Index of 1, placing it in the low exposure category. This trend of low UV levels makes December akin to the preceding months of January and November, where outdoor activities can be enjoyed without the worry of sunburn, allowing for a burn time of approximately 45 minutes. Notably, as the seasons change, the UV Index reaches its peak during the summer months of June and July, highlighting a significant increase from the winter months. For those planning their adventures, understanding these patterns is essential. To learn more about the UV Index throughout the year, visit Reykjanesbaer UV Index.

Maximum UV Index Levels in Reykjanesbaer for December

The chart shows the monthly maximum UV Index (UVI) for Reykjanesbaer 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.
JanFebMarAprMayJunJulAugSepOctNovDec112356643211
Data source: Reykjanesbaer 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.

December Sunshine in Reykjanesbaer

December in Reykjanesbær, Iceland, is undoubtedly a time of shorter days, with only 28 hours of sunshine. This stark contrast to the burgeoning brightness of spring and summer, where sunlight peaks at 344 hours in May, underscores a dramatic seasonal shift. As autumn fades into winter, the daylight dwindles from 207 hours in September down to November's mere 79 hours, ultimately culminating in December's low. This trend highlights the Icelandic winter's enchanting charm, where the long, dark nights offer a canvas for the mesmerizing Northern Lights, inviting visitors to embrace the beauty found in the quiet of a winter's dusk. While December may be dim, it paves the way for the gradual return of the sun, promising brighter days ahead.

Monthly Sunshine Duration in Reykjanesbaer: December Highlighted

The December sunshine duration represents the total number of hours Reykjanesbaer experiences direct sunlight during the month of December, excluding cloudy or obstructed periods. This chart compares the sunshine duration of December with the other months of the year.
JanFebMarAprMayJunJulAugSepOctNovDec42h90h195h214h344h338h312h294h207h146h79h28h
Data source: Reykjanesbaer December Sunshine duration data generated using information from the Copernicus Climate Change Service.

Chance of Sun in Reykjanesbaer During December

In Reykjanesbaer, Iceland, December brings a modest 20% chance of sunny weather, a slight improvement from the gloomier depths of winter. As we analyze the yearly trend, it's clear that the peak for sunshine occurs in May, with 49%, gradually tapering off as the year progresses into the colder months. The data indicates a significant drop-off in sunshine from spring to autumn, particularly notable in the height of summer when sunnier days are surprisingly sparse, hitting a low of just 12% in August. While December does not offer the sun-soaked days of early summer, it does stand as a beacon of hope compared to the darker months preceding it, such as February and March, where the likelihood of sunshine falls to mere 15% or 18%. Thus, if you're seeking those elusive sun rays during the winter chill, December in Reykjanesbaer provides a small glimmer of optimism.

Percentage of Sunny Days in December in Reykjanesbaer

The chart illustrates the percentage of sunny days in Reykjanesbaer throughout the year, with December highlighted. It highlights the variation in sunshine across each month and provides an overview of the typical frequency of sunny days, offering insights into how often Reykjanesbaer experiences clear skies throughout the year.
JanFebMarAprMayJunJulAugSepOctNovDec29%18%15%26%49%18%13%12%15%26%22%20%
Data source: Reykjanesbaer December chance of sun data, generated using information from the Copernicus Climate Change Service.

Daylight Hours in Reykjanesbaer in December

As the year winds down in Reykjanesbær, Iceland, December welcomes a stark transition into the depths of winter, where daylight dwindles to just 4 hours. This marks a significant contrast from the spring and summer months, where daylight stretches to an impressive 20 hours in June. Following the gradual increase from 5 hours in January to a peak in May, the days start to shorten again, creating a rhythmic ebb and flow of sunlight. By the time November arrives, daylight has already plummeted to 6 hours, setting the stage for December's deep darkness. This seasonal variation not only bathes the landscape in a diverse palette of light but also creates a unique atmosphere that defines the beauty of Icelandic winters.

Average Daylight Hours in Reykjanesbaer for December

The chart illustrates the variation in daylight duration in Reykjanesbaer throughout the year, with December highlighted. It shows the monthly changes in daylight hours, calculated by summing the hours between sunrise and sunset.
JanFebMarAprMayJunJulAugSepOctNovDec5h 34m8h 35m11h 50m15h 8m18h 26m20h 42m19h 24m16h 11m12h 55m9h 40m6h 28m4h 24m
Data source: Reykjanesbaer daylight hours, calculated by summing the hours between sunrise and sunset for each day.

December Winds in Reykjanesbaer

As December sweeps into Reykjanesbaer, the winds begin to settle, bringing an average speed of 6.5 m/s (15 mph)—a slight dip from the more vigorous gusts earlier in the year. Following a trend observed since the vibrant summer months, where wind speeds reached their lowest at 4.8 m/s (11 mph) in August, the winds picked up again in the fall. November’s winds were robust at 7.1 m/s (16 mph), hinting at a powerful transition into winter. This December, while the winds may not be as fierce as in the preceding months, they still carry the crisp, invigorating air characteristic of Iceland's landscape, inviting both locals and visitors to embrace the enchanting chill of the season.

Average December Wind Speed in Reykjanesbaer

The chart displays monthly wind speed patterns in Reykjanesbaer, with values for each month shown alongside December's data, which is highlighted for easy comparison. It illustrates the average wind speed, offering insights into how December's wind conditions compare to the rest of the year.
JanFebMarAprMayJunJulAugSepOctNovDec7.87.27.26.25.05.85.14.87.26.87.16.5 m/s
Data source: Reykjanesbaer December wind data, generated using information from the Copernicus Climate Change Service.

How December Weather in Reykjanesbaer Compares to Other Months

The weather in Reykjanesbaer 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 Reykjanesbaer and find detailed weather information for every month.

December and January display quite similar weather patterns, with both months experiencing minimum temperatures around -6°C (21°F) and average highs reaching 9°C (49°F). December sees a slight uptick in overall precipitation, measuring 119 mm (4.7 in) over 18 days, compared to January's 117 mm (4.6 in) across 17 days. Humidity remains consistent at 80% throughout both months, creating a damp and chilly atmosphere. For more detailed insights into January's conditions, you can check out Reykjanesbaer weather in January.

December and February both present chilly conditions, but there are notable differences in their weather patterns. In December, temperatures range from a minimum of -6°C (21°F) to a maximum of 9°C (49°F), with an average temperature of 2°C (37°F). Precipitation is prevalent during this month, with 119 mm (4.7 in) recorded over 18 days, and the humidity levels hover around 80%. In contrast, February experiences slightly colder temperatures, with a minimum of -9°C (16°F) and a maximum of 8°C (47°F), while the average remains similar at 2°C (36°F). Precipitation increases to 126 mm (5.0 in) over 19 days, but humidity dips to 77%. For a detailed look at February weather in this region, visit Reykjanesbaer weather in February.

In December, temperatures in Reykjanesbaer typically range from a chilly -6°C (21°F) to a maximum of 9°C (49°F), with an average temperature around 2°C (37°F). This month sees significant precipitation at 119 mm (4.7 in) over 18 days and maintains a humidity level of 80%. In contrast, March temperatures mirror December's minimum at -6°C (21°F) and have a slightly lower maximum of 8°C (47°F), with an average temperature remaining the same at 2°C (37°F). Precipitation during March is slightly less at 110 mm (4.3 in) over the same 18 days, and humidity is marginally higher at 82%. For more details on March weather in Reykjanesbaer, you can visit Reykjanesbaer weather in March.

In December, the weather tends to be colder, with temperatures ranging from a minimum of -6°C (21°F) to a maximum of 9°C (49°F), offering an average of 2°C (37°F). The month sees significant precipitation, totaling 119 mm (4.7 in) over 18 days, paired with a consistent humidity level of 80%. In contrast, April experiences slightly milder conditions, with temperatures fluctuating between a minimum of -7°C (20°F) and a maximum of 11°C (52°F), averaging 5°C (41°F). Although April has a slightly higher precipitation of 133 mm (5.2 in) across the same number of days, the humidity remains constant at 80%. For more details on April weather in Reykjanesbaer, check out Reykjanesbaer weather in April.

In December, temperatures in Reykjanesbaer are notably colder, with a minimum of -6°C (21°F) and an average temperature of 2°C (37°F), reaching a maximum of 9°C (49°F). The month sees significant precipitation, totaling 119 mm (4.7 in) over 18 days, alongside a high humidity level of 80%. In contrast, May brings more mild weather, with temperatures ranging from a minimum of 0°C (33°F) to an average of 7°C (44°F), and a maximum of 12°C (54°F). The precipitation is slightly lower at 115 mm (4.5 in) over 16 days, but the humidity increases to 85%. To explore more about the pleasant weather in May, you can visit Reykjanesbaer weather in May.

In December, the weather tends to be much colder, with temperatures ranging from a chilly -6°C (21°F) at night to a maximum of 9°C (49°F) during the day. The month sees considerable precipitation, averaging 119 mm (4.7 in) over about 18 days, contributing to a damp and humid atmosphere with humidity levels around 80%. In contrast, June offers a more moderate climate, with temperatures starting at a minimum of 4°C (39°F) and reaching up to 15°C (60°F). The precipitation is less, at 87 mm (3.4 in) over 15 days, and humidity remains relatively high at 85%. For a closer look at the weather conditions in June, you can visit Reykjanesbaer weather in June.

December and July weather present a striking contrast. In December, the temperatures hover around a chilly average of 2°C (37°F), with lows plummeting to -6°C (21°F) and highs reaching only 9°C (49°F). The month is also characterized by significant precipitation totaling 119 mm (4.7 in) spread over 18 days, combined with a humidity level of 80%, creating a damp and cold atmosphere. In contrast, July offers a much milder climate, with an average temperature of 11°C (52°F), and a comfortable max of 19°C (66°F). Precipitation in July is lighter at 78 mm (3.1 in) over the same number of days, and humidity slightly increases to 87%, providing a different feel to the summer months. For a detailed look at July's weather, explore Reykjanesbaer weather in July.

December and August present stark contrasts in weather conditions. In December, temperatures drop significantly, with a minimum of -6°C (21°F) and an average of 2°C (37°F), peaking at 9°C (49°F). The month experiences considerable precipitation, totaling 119 mm (4.7 in) over 18 days, along with high humidity levels averaging 80%. In contrast, August offers more mild temperatures, with a minimum of 7°C (45°F) and an average of 11°C (52°F), reaching a maximum of 16°C (62°F). Precipitation is also less frequent in August, totaling 89 mm (3.5 in) over 13 days, and the humidity is slightly higher at 88%. For those interested in learning more about the weather during this summer month, you can visit Reykjanesbaer weather in August.

Comparing the weather in December and September reveals distinct seasonal characteristics. In December, temperatures tend to be colder, with averages hovering around 2°C (37°F), and reaching a minimum of -6°C (21°F) at night. In contrast, September experiences milder conditions, with average temps around 9°C (48°F) and a minimum of 1°C (34°F). Precipitation is also more pronounced in September, totaling 171 mm (6.7 in) over 21 days, whereas December sees 119 mm (4.7 in) across 18 days. Humidity levels are fairly high in both months, with December at 80% and September at 85%. For more detailed insights, check out Reykjanesbaer weather in September.

In comparing the weather between December and October, we notice a significant drop in temperature as winter sets in. December sees minimum temperatures plummet to -6°C (21°F) with an average of around 2°C (37°F) and a maximum of 9°C (49°F), while October is relatively milder with minimums of -1°C (30°F) and averages of 6°C (44°F) that can reach up to 12°C (53°F). Interestingly, both months experience similar precipitation levels of 119 mm (4.7 in) and about 18 days of rain; however, December's higher humidity at 80% compared to October's 85% creates a more chilling atmosphere. For more detailed insights, check out Reykjanesbaer weather in October.

In comparing the weather patterns of December and November, we notice a slight dip in temperatures as December experiences a minimum of -6°C (21°F) compared to November's minimum of -4°C (25°F). The average temperatures also shift, with December averaging 2°C (37°F) while November holds a slightly warmer average of 4°C (39°F). Interestingly, both months receive the same amount of precipitation, totaling 119 mm (4.7 in) over 18 days, but December has slightly higher humidity at 80% compared to November's 81%. For more detailed insights, you can check the Reykjanesbaer weather in November.

Compare Reykjanesbaer's Climate with Cities Worldwide

Conclusion: What to Expect From December Weather in Reykjanesbaer

As December settles over Reykjanesbaer, the weather transforms into a chilly embrace, marking a significant shift from the milder months preceding it. With average temperatures dipping to a crisp 2°C and occasional lows reaching -6°C, this month stands out for its colder, more unpredictable climate. Rainfall becomes more frequent, with nearly half the month experiencing precipitation, resulting in a total of 119 mm. The higher humidity level adds to the wintry atmosphere, making December feel even more brisk. For those seeking to explore this vibrant region, understanding the unique December climate can enhance your experience. For a deeper dive into the seasonal weather patterns, visit Reykjanesbaer Climate.