December Weather in Tonsberg, Norway

Last updated: August 27, 2025

In December, Tønsberg, Norway experiences a chilly climate, characterized by a maximum temperature of 9°C (49°F) and an average of 2°C (35°F), dipping to a minimum of -8°C (19°F). This month sees significant precipitation, with 119 mm (4.7 in) falling over 17 days, contributing to the region's high humidity level of 93%. Residents and visitors alike can expect a mixture of overcast skies and rain, creating a moody winter atmosphere that captures the essence of the season.

December Temperature in Tonsberg

As December settles over Tønsberg, Norway, temperatures begin to take a notable dip, marking the transition into winter. With minimums reaching -8°C (19°F) and average highs around 2°C (35°F), the month is characterized by a chill that lingers in the air. While the highs cap off at 9°C (49°F), citizens and visitors alike can expect an atmosphere cloaked in the crispness of early winter. Compared to the preceding November, which had an average of 5°C (42°F), December's colder readings herald the arrival of snow and festive winter activities, making it a cozy month for locals and a picturesque time for tourists. Embrace the season as the landscape transforms into a winter wonderland, perfect for exploration and reflection.

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

The chart illustrates December temperature patterns in Tonsberg, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Tonsberg, December typically has an average temperature of {2}°C ({3}°F), with highs reaching up to {4}°C ({5}°F) and lows dropping to around {6}°C ({7}°F).
JanFebMarAprMayJunJulAugSepOctNovDec343337445262656357494135
Data source: Temperature data for Tonsberg generated using information from the Copernicus Climate Change Service.
Choose your preferred temperature unit
The average of daily temperatures (24 hours) calculated across all days in the month.

December Precipitation in Tonsberg

In December, Tønsberg experiences a notable increase in precipitation, with 119 mm (4.7 in) of rainfall over 17 days, signaling the onset of winter's wet weather. This marks a slight decrease from November's 131 mm, yet the number of rainy days peaks, suggesting a more persistent, albeit lighter, drizzle. The trend indicates that as the year draws to a close, the precipitation becomes both more frequent and sustained, paving the way for the chilly days of January. This month encapsulates the transition into a truly wintry climate, where even under grey skies, the beauty of Norway's natural scenery shines through the glistening droplets.

December Precipitation Trends in Tonsberg

The chart displays monthly precipitation patterns in Tonsberg, 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 Tonsberg, December typically receives around {2} mm ({3} inches) of precipitation spread over approximately {4} days.
JanFebMarAprMayJunJulAugSepOctNovDec7076733574858585137157131119
Data source: Precipitation data for December generated using information from the Copernicus Climate Change Service.
Choose your preferred precipitation unit

December Humidity in Tonsberg

In Tønsberg, Norway, December brings a notable humidity level of 93%, consistent with the preceding months of November and October. This high humidity reflects the region's cold, damp winters, which preservation of moisture in the air is a common theme throughout the season. Interestingly, humidity levels tend to decline from an average of 94% in January to a low of 71% by June, signaling a gradual shift towards drier summer conditions. However, as the year draws to a close, humidity re-establishes itself, peaking in the late autumn and early winter months, creating a characteristic chill that envelops the city. This cyclical pattern showcases how Tønsberg's climate embraces both the crispness of winter and the refreshing qualities of moisture throughout the year.

December Average Humidity in Tonsberg

This chart illustrates the average monthly humidity levels in Tonsberg, 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 Tonsberg is approximately {2}%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec94%92%89%82%73%71%72%77%86%92%93%93%
Data source: Humidity data for December generated using information from the Copernicus Climate Change Service.

December UV Index in Tonsberg

As December settles in Tonsberg, Norway, the UV Index remains low at 1, consistent with the trend seen in the preceding winter months of January and February. With a burn time of approximately 45 minutes, residents and visitors can enjoy outdoor activities with minimal concern for sunburn. This low level emphasizes a gradual decline in UV intensity as the year closes, particularly after the heightened exposure experienced during the summer months when the Index peaked at 7 in June and July. Overall, the winter months are characterized by reduced UV radiation, making this time safer for outdoor pursuits. For more detailed information on UV levels throughout the year, check out Tonsberg UV Index.

Maximum UV Index Levels in Tonsberg for December

The chart shows the monthly maximum UV Index (UVI) for Tonsberg 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 Tonsberg typically reaches {2}, which falls under the {3} exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec113457754211
Data source: Tonsberg 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 Tonsberg

Amidst the chilly embrace of December in Tønsberg, Norway, the sun graces the landscape with a modest 101 hours of sunshine, a subtle but significant dip from the vibrant glow of summer. As the year transitions from the long, sun-drenched days of July—boasting an impressive 475 hours—to the shorter, frost-kissed days of winter, this month's sunlight serves as a gentle reminder of nature's rhythm. Notably, the sun's presence begins to wane in November, where it offers just 137 hours, hinting at the gradual descent into the colder months. Reflecting a broader trend, as the year unfolds, we witness a striking juxtaposition; with each month, sunshine peaks in the warmth of summer before yielding to winter's retreating light, encapsulating a beautiful cycle of contrast in Tønsberg’s seasonal tapestry.

Monthly Sunshine Duration in Tonsberg: December Highlighted

The December sunshine duration represents the total number of hours Tonsberg 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.
JanFebMarAprMayJunJulAugSepOctNovDec93h182h289h372h428h464h475h412h291h238h137h101h
Data source: Tonsberg December Sunshine duration data generated using information from the Copernicus Climate Change Service.

Chance of Sun in Tonsberg During December

In December, the chance of sunny weather in Tønsberg, Norway, stands at 28%, a continuation of the trend observed in the previous months of autumn. As we transition from November, which sees a relatively low 23% chance of sunshine, December offers a slight improvement, yet still lags behind the sunnier spring months like April and March, which boast probabilities of 58% and 45%, respectively. This seasonal pattern highlights the move from the dimmer, darker days of late fall towards a glimmer of brightness as winter progresses, although sunshine still remains elusive. As one anticipates the winter months, it's clear that December's limited sunshine is a reminder of the cozy indoor moments that the season brings.

Percentage of Sunny Days in December in Tonsberg

The chart illustrates the percentage of sunny days in Tonsberg 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 Tonsberg experiences clear skies throughout the year.
JanFebMarAprMayJunJulAugSepOctNovDec33%37%45%58%32%42%47%42%28%32%23%28%
Data source: Tonsberg December chance of sun data, generated using information from the Copernicus Climate Change Service.

Daylight Hours in Tonsberg in December

In Tønsberg, Norway, the changing daylight hours create a dynamic rhythm throughout the year. December marks a return to shorter days, with only 6 hours of daylight, mirroring the minimal light experienced in January. As winter sets in, the daylight gradually dwindles from the invigorating 18 hours in the height of summer, peaking in June. However, the transition is gradual; from December's limited light, the days begin to gradually extend again, fostering optimism as February arrives with 9 hours of daylight. The steady increase in daylight hours culminating in the long summer days starkly contrasts with the winter months, highlighting the seasonal shift that shapes both the landscape and lifestyle in this picturesque Norwegian town.

Average Daylight Hours in Tonsberg for December

The chart illustrates the variation in daylight duration in Tonsberg throughout the year, with December highlighted. It shows the monthly changes in daylight hours, calculated by summing the hours between sunrise and sunset.
JanFebMarAprMayJunJulAugSepOctNovDec6h 59m9h 14m11h 52m14h 32m17h18h 25m17h 39m15h 22m12h 46m10h 7m7h 38m6h 13m
Data source: Tonsberg daylight hours, calculated by summing the hours between sunrise and sunset for each day.

December Winds in Tonsberg

As December embraces Tønsberg, Norway, the wind begins to whisper a festive tune at an average speed of 4.1 m/s (9 mph). This subtle breeze marks a shift from the higher gusts of October, which peaked at 5.3 m/s (12 mph), revealing a trend of declining wind intensity as winter settles in. The steadfast winds of earlier months, particularly from January to November, hover around 4.6 m/s (10 mph), maintaining a consistent presence. With the transition into December, the simmering breeze provides a gentle reminder of the colder months ahead, creating a serene atmosphere that wraps the coastal town in a comforting embrace.

Average December Wind Speed in Tonsberg

The chart displays monthly wind speed patterns in Tonsberg, 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.
JanFebMarAprMayJunJulAugSepOctNovDec4.64.64.24.13.73.63.43.83.95.34.64.1 m/s
Data source: Tonsberg December wind data, generated using information from the Copernicus Climate Change Service.

How December Weather in Tonsberg Compares to Other Months

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

In December, the weather tends to be milder overall, with average temperatures hovering around 2°C (35°F) and a maximum of 9°C (49°F), although it can drop as low as -8°C (19°F). The month also experiences significant precipitation, totaling 119 mm (4.7 in) over about 17 days, coupled with a high humidity level of 93%. In contrast, January brings slightly colder temperatures, with an average of 1°C (34°F) and a minimum dipping to -11°C (12°F), although the maximum can reach 11°C (51°F). Precipitation decreases to 70 mm (2.8 in) over only 10 days, while humidity remains high at 94%. For a more detailed look at January weather, check out Tonsberg weather in January.

When comparing the weather in December to February, we observe some notable differences. December tends to be slightly milder, with average temperatures ranging from a minimum of -8°C (19°F) to a maximum of 9°C (49°F), while February is colder, with minimum temperatures dropping to -12°C (11°F) but maintaining a maximum of 9°C (48°F). Additionally, December experiences more precipitation, totaling 119 mm (4.7 inches) over 17 days, compared to February's 76 mm (3.0 inches) over just 11 days. Humidity levels remain relatively similar, with December at 93% and February at 92%. For those planning activities in this chilly season, Tonsberg weather in February provides additional insights.

December and March present contrasting weather patterns. In December, average temperatures hover around 2°C (35°F), with nighttime lows dropping to -8°C (19°F) and highs reaching 9°C (49°F). This month sees significant precipitation, totaling 119 mm (4.7 in) over 17 days, contributing to a high humidity level of 93%. In comparison, March experiences slightly warmer average temperatures, peaking at 13°C (55°F) during the day, although nighttime temperatures can plunge to -12°C (11°F). Precipitation is lower in March, totaling 73 mm (2.9 in) over just 10 days, and the humidity is also slightly reduced at 89%. For more detailed weather information, you can visit Tonsberg weather in March.

When comparing the weather in December and April, notable contrasts emerge. December is characterized by colder temperatures, with minimums dropping to -8°C (19°F) and an average around 2°C (35°F). In contrast, April offers a milder climate, featuring minimums of -4°C (24°F) and average temperatures rising to 6°C (44°F), peaking at a pleasant 20°C (68°F). Additionally, December experiences significantly more precipitation, with 119 mm (4.7 in) spread over 17 days, while April sees just 35 mm (1.4 in) over 5 days. The humidity levels also reflect this change, with December at a high 93% compared to April’s more comfortable 82%. For more specific insights, check out Tonsberg weather in April.

In December, the weather can be quite harsh, with temperatures ranging from a chilly -8°C (19°F) at night to a slightly milder 9°C (49°F) during the day, accompanied by high humidity levels of 93%. The month also sees considerable precipitation, averaging 119 mm (4.7 in) over 17 days, making it a damp and cold time of year. In contrast, May brings a welcome transformation, boasting warmer temperatures that range from a minimum of 2°C (36°F) to a pleasant average of 11°C (53°F) and maximums reaching 27°C (81°F). With lower humidity at 73% and reduced rainfall of 74 mm (2.9 in) spread over just 10 days, May offers a significantly drier and more temperate climate, perfect for outdoor activities. For more details, check out Tonsberg weather in May.

In December, the weather is characterized by cold temperatures, with a minimum of -8°C (19°F) and an average of 2°C (35°F), while maxing out at 9°C (49°F). The month is quite wet, receiving 119 mm (4.7 in) of precipitation over 17 days, coupled with high humidity at 93%. In stark contrast, June brings much warmer conditions, with temperatures ranging from a minimum of 7°C (45°F) to an average of 17°C (62°F) and peaking at 27°C (82°F). This month also sees less precipitation at 85 mm (3.3 in) over 11 days and lower humidity at 71%. For those interested in more details, check out Tonsberg weather in June.

December and July present starkly contrasting weather conditions. In December, temperatures can plunge to a minimum of -8°C (19°F), with an average of 2°C (35°F) and a maximum of 9°C (49°F). This chilly month is marked by significant precipitation, averaging 119 mm (4.7 in) over 17 days, and high humidity at 93%. In contrast, July enjoys much warmer temperatures, with a minimum of 10°C (51°F), an average of 18°C (65°F), and peaks reaching up to 31°C (88°F). The summer month experiences less rainfall, with 85 mm (3.4 in) of precipitation over 10 days and a lower humidity level of 72%. For more detailed insights, you can check out Tonsberg weather in July.

When comparing December and August weather, there are stark contrasts in temperature and overall climate conditions. December boasts a chilly range with minimum temperatures dropping to -8°C (19°F) and average highs only reaching around 9°C (49°F). This month also sees significant precipitation, with 119 mm (4.7 in) falling over 17 days, and a high level of humidity at 93%. In contrast, August offers a much warmer experience, with minimum temperatures starting at 10°C (50°F) and average maximums soaring to 25°C (77°F). The precipitation in August is relatively lower at 85 mm (3.3 in) spread across 12 days, coupled with a more comfortable humidity level of 77%. For a detailed look at the weather trends, check out Tonsberg weather in August.

December weather presents a stark contrast to that of September. While December sees colder temperatures ranging from a minimum of -8°C (19°F) to a maximum of 9°C (49°F), September enjoys a milder range, with temperatures varying from a minimum of 6°C (43°F) to a maximum of 22°C (71°F). December is also characterized by higher humidity at 93%, compared to September's relatively lower 86%. Precipitation levels are significant in both months, with December receiving 119 mm (4.7 in) over 17 days and September slightly more at 137 mm (5.4 in) over 14 days. For an in-depth look at September's weather, you can visit Tonsberg weather in September.

In comparing the weather in December and October, we see noticeable differences in temperature and precipitation. December tends to be much colder, with average temperatures ranging from a minimum of -8°C (19°F) to a maximum of 9°C (49°F), while October offers a milder climate, with temperatures varying from -1°C (31°F) to 16°C (62°F). December also experiences a significant amount of precipitation, with around 119 mm (4.7 in) over 17 days, although October slightly edges it out with higher precipitation at 157 mm (6.2 in) over 16 days. Humidity levels are fairly similar, with December at 93% and October at 92%. For a closer look at October weather specifics, check Tonsberg weather in October.

In comparing the weather of December and November, December tends to be colder, with average temperatures ranging from a minimum of -8°C (19°F) to a maximum of 9°C (49°F), while November showcases slightly milder conditions with temperatures ranging from -5°C (24°F) to 14°C (57°F). Despite being cooler, December experiences slightly less precipitation, totaling 119 mm (4.7 in) over 17 days, compared to November's 131 mm (5.2 in) over just 15 days. Both months share a high humidity level of 93%, creating a consistently damp atmosphere. For a detailed look at November's conditions, you can visit Tonsberg weather in November.

Compare Tonsberg's Climate with Cities Worldwide

Conclusion: What to Expect From December Weather in Tonsberg

As December unfolds in Tønsberg, the weather takes a notable turn, ushering in a chill that sets it apart from the milder months of the year. The drop in temperatures brings a convincing winter feel, with nighttime lows that nudge towards the freezing point. Alongside this, the month is characterized by its high humidity and significant precipitation, leading to a damp and often gray atmosphere that residents must navigate. With about half the month seeing rain, it's a stark contrast to the drier, sunnier days of late summer and early fall. For those intrigued by how Tønsberg's distinct climate shapes its winter landscape, more insights can be found here: Tonsberg Climate.