Last updated: August 27, 2025
December in Sundsvall, Sweden showcases a striking winter landscape, where temperatures fluctuate between a maximum of 7°C (46°F) and a chilly minimum of -22°C (-7°F). This month sees an average temperature hovering around -3°C (27°F), setting the stage for a true Nordic experience. With precipitation totaling 76 mm (3.0 in) over 13 days, residents and visitors alike can expect a mix of snow and rain, contributing to the region's high humidity of 96%. The atmospheric chill and moisture create a unique winter charm, perfect for those seeking a quintessential Scandinavian winter.
In December, Sundsvall, Sweden, experiences a deep embrace of winter, with temperatures reflecting the season's chill. The month starts with a minimum of -22°C (-7°F), paving the way for an average temperature of -3°C (27°F), and peaks at a comfortable 7°C (46°F). This indicates a gradual easing from the harsher minimums seen in the previous months as the city shifts into the holiday spirit amidst frosty landscapes. While the biting cold persists, December sets the stage for cozy get-togethers and festive celebrations, all under the frosted cloak of winter that characterizes this charming Swedish town.
In December, Sundsvall experiences a notable increase in precipitation, with 76 mm (3.0 in) falling over the month, making it one of the wetter times of the year. This surge in rainfall occurs over approximately 13 days, aligning closely with the wetter autumn months that precede it. Following the trend from October, where precipitation peaked at 89 mm (3.5 in), December maintains a robust moisture level, signaling the deepening of winter conditions. The persistent gray skies typical of this time contribute to the rich, wintry landscape, preparing the ground for the snow that often blankets the region as temperatures drop further. Thus, December in Sundsvall not only tops the late fall precipitation charts but also sets the stage for a truly Nordic winter experience.
In Sundsvall, Sweden, December brings a notable humidity level of 96%, which aligns with the typically high moisture levels seen throughout the winter months. As the year progresses, humidity starts at a peak in January at 97% and gradually decreases to 80% in May, showcasing the influence of warmer seasons. However, as temperatures begin to drop again, humidity rebounds in the latter months, reaching 94% in November before slightly easing in December. This trend illustrates a cyclical pattern where the air is most saturated during the colder months, promoting a chilly but rich atmospheric experience in the heart of winter.
In December, Sundsvall, Sweden experiences a consistently low UV Index of 1, reflecting the short days and colder weather typical of winter. This means that sun exposure is minimal, with a recommended burn time of 45 minutes for those venturing outdoors. As the year progresses from the brightness of summer, where the UV Index peaks at 6 in June and July, it steadily declines through the fall to this low level. Despite the harsh conditions, December's UV Index remains relatively stable, like its December predecessors, providing a reminder of the seasonal ebb and flow of sunlight. For more detailed information about UV levels throughout the year, visit Sundsvall UV Index.
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In Sundsvall, Sweden, December brings a stark contrast to the vibrant sunlight of the preceding months, capturing the essence of winter's embrace. With only 54 hours of sunshine, December is the twilight of the year's light, significantly lower than the 64 hours seen in January, but less than reflective of the bright spring and summer months where daylight thrives, peaking at 499 hours in July. The gradual decline from a promising 448 hours in May to the dusky December days paints a picture of nature's cyclical rhythms, where the allure of extended daylight gives way to the long, dark evenings. This seasonal shift invites both reflection and anticipation, as residents of Sundsvall yearn for the return of the sun after the year's shortest days.
In Sundsvall, Sweden, December offers a modest chance of sunshine with a likelihood of around 27%. As the year progresses, there’s a notable upward trend in sunny days, beginning from a mere 16% in January and peaking at 51% in July. Interestingly, while the summer months bask in abundance of sunshine, December reflects the onset of winter, where daylight dwindles and the sun retreats. This seasonal fluctuation highlights how December stands at a crossroads, offering a stark contrast to the sunnier days of the year, yet remains a step above the gloomy January skies.
As the winter chill settles in, Sundsvall, Sweden, experiences a notable dip in daylight during December, with only 5 hours of sunlight to brighten the short days. This marks the year's shortest daylight duration, a stark contrast to the 19 hours enjoyed in the height of summer, specifically June. The transition from the longer days of spring and summer to the brief light of December reflects a natural rhythm of the seasons, where daylight gradually diminishes from 17 hours in May to just a sliver of light by the winter solstice. As the year winds down, December's fleeting sunlight beckons a period of reflection and the coziness of indoor gatherings, perfectly encapsulating the charm of cold, wintry days in Sundsvall.
In Sundsvall, December ushers in a cool breeze with an average wind speed of 3.4 m/s (8 mph), a slight uptick from the preceding months. As winter solidifies its grip, the winds pick up just a touch from the calm of late autumn, which saw November at 3.2 m/s. Interestingly, this December wind speed is part of a broader seasonal trend where the months leading into winter generally exhibit stable, moderate breezes, peaking slightly in late summer and early fall. Overall, while December may not be the windiest month, the subtle increase reflects a seasonal shift, invigorating the landscape with a refreshing chill that signals the arrival of winter festivities.
Weather in Sundsvall varies notably across the year, with each month offering distinct climate conditions. This page compares December’s weather to other months in Sundsvall, focusing on differences in temperature, rainfall, humidity, and UV levels.
December and January in Sundsvall exhibit notably cold temperatures, but January tends to be even chillier. In December, the average temperature hovers around -3°C (27°F), with minimums dropping to -22°C (-7°F) and maximums reaching 7°C (46°F). The month also experiences considerable precipitation, totaling 76 mm (3.0 in) over 13 days, along with a high humidity level of 96%. In contrast, January sees an even lower minimum temperature of -28°C (-18°F) and an average of -5°C (24°F), while maximum temperatures remain slightly higher at 8°C (47°F). Precipitation decreases to 55 mm (2.1 in) over just 9 days, with humidity slightly increasing to 97%. For more detailed information on January weather, check out Sundsvall weather in January.
In December, temperatures can plunge as low as -22°C (-7°F), with an average temperature of -3°C (27°F) and a maximum of 7°C (46°F). The month sees significant precipitation, totaling 76 mm (3.0 in) over 13 days, contributing to a high humidity level of 96%. In contrast, February offers slightly milder conditions, with temperatures still dipping to -22°C (-7°F) but averaging -5°C (23°F) and peaking at 8°C (47°F). Precipitation is less frequent, totaling 44 mm (1.7 in) over just 8 days, while humidity remains relatively high at 95%. For more detailed insights, you can check Sundsvall weather in February.
In December, the weather is characterized by colder temperatures, with a minimum of -22°C (-7°F) and an average of -3°C (27°F), leading to a chillier atmosphere overall. The month experiences higher precipitation, with 76 mm (3.0 in) falling across 13 days, and the humidity sits at a notable 96%.
In contrast, March sees slightly milder conditions, with temperatures cooling to a minimum of -23°C (-10°F) but an average warming to -1°C (30°F) and a maximum reaching 13°C (55°F). Precipitation decreases to 45 mm (1.8 in) over 9 days, and humidity is slightly lower at 92%. Thus, while both months are cold, March offers a hint of spring with less precipitation and a more comfortable average temperature. For more detailed insights, check the Sundsvall weather in March.
In December, the weather is frigid, with temperatures ranging from a chilling -22°C (-7°F) to a relatively mild maximum of 7°C (46°F), averaging around -3°C (27°F). This month sees significant precipitation, totaling 76 mm (3.0 in) over approximately 13 days, accompanied by high humidity levels of 96%.
In contrast, April offers a noticeable shift in climate with milder temperatures, boasting a minimum of -14°C (7°F) and a maximum reaching up to 21°C (70°F), averaging 3°C (38°F). Precipitation decreases to 30 mm (1.2 in) spread across about 8 days, and humidity drops to 86%.
For a detailed look at the weather trends in April, visit Sundsvall weather in April.
When comparing the weather in December and May, it's clear that these months present stark contrasts. December is characterized by significantly colder temperatures, with minimums dropping to -22°C (-7°F) and an average of -3°C (27°F), while May enjoys milder conditions, with temperatures ranging from a minimum of -4°C (25°F) to a comfortable average of 9°C (48°F), peaking at a warm 27°C (81°F). Precipitation is more frequent in December, with 76 mm (3.0 in) over 13 days, compared to May's lighter total of 37 mm (1.5 in) across just 9 days. Additionally, humidity levels in December are quite high at 96%, while May sees a more manageable 80%. For further details on May weather, you can visit Sundsvall weather in May.
December and June showcase stark contrasts in weather conditions. In December, temperatures plummet with a minimum of -22°C (-7°F) and an average of -3°C (27°F), peaking at 7°C (46°F). The month also brings considerable precipitation, totaling 76 mm (3.0 in) over 13 days, along with high humidity at 96%. In contrast, June experiences a much milder climate with minimum temperatures of 1°C (34°F) and an average of 15°C (58°F), reaching a maximum of 32°C (90°F). Precipitation is lighter at 57 mm (2.3 in) over just 9 days, and humidity lowers to a comfortable 76%. For a closer look at the pleasant June weather in Sundsvall, check out Sundsvall weather in June.
December and July present stark contrasts in weather conditions. In December, temperatures plummet to a minimum of -22°C (-7°F) and average around -3°C (27°F), peaking at 7°C (46°F). The month is marked by high humidity at 96%, with precipitation occurring on 13 days, totaling 76 mm (3.0 in). In contrast, July offers a much milder climate, with temperatures ranging from a minimum of 4°C (40°F) to an average of 16°C (61°F) and a maximum of 30°C (87°F). Precipitation is similar, at 77 mm (3.0 in), but occurs over just 11 days, and humidity is lower at 80%. For a more detailed look at July conditions, you can check this link: Sundsvall weather in July.
December and August present stark contrasts in weather conditions. In December, temperatures can plummet as low as -22°C (-7°F), with an average of -3°C (27°F) and a maximum of 7°C (46°F). The month is marked by high humidity at 96% and receives about 76 mm (3.0 in) of precipitation over 13 days. In contrast, August brings a much milder climate, with temperatures ranging from a minimum of 2°C (36°F) to a comfortable average of 15°C (59°F) and highs reaching 27°C (82°F). Precipitation is slightly lower at 74 mm (2.9 in) over the same 13 days, but the humidity is also lower at 86%. For more details on August weather, visit Sundsvall weather in August.
In December, temperatures plummet with a range from a bitter -22°C (-7°F) to a maximum of 7°C (46°F), contrasting sharply with September's milder conditions, where temperatures vary from -2°C (29°F) to 21°C (71°F). While both months experience precipitation on approximately 13 days, December sees a higher total of 76 mm (3.0 in) compared to September's 64 mm (2.5 in). Additionally, December's humidity is significantly higher at 96%, while September maintains a more comfortable 89%. For a closer look at September's weather patterns, you can visit Sundsvall weather in September.
In December, the weather takes a sharp turn towards winter, with temperatures dropping significantly, averaging -3°C (27°F), and reaching a minimum of -22°C (-7°F). In contrast, October boasts a much milder climate, where temperatures range from a minimum of -8°C (18°F) to a pleasant maximum of 20°C (68°F), resulting in an average of 5°C (42°F). While both months experience considerable precipitation, December records 76 mm (3.0 in) over about 13 days, whereas October sees a slightly higher total of 89 mm (3.5 in) across 14 days. Humidity levels are similar, with December at 96% and October at 93%. For further details, you can check Sundsvall weather in October.
In December, temperatures drop even further than in November, with average highs reaching only 7°C (46°F) compared to November's maximum of 13°C (56°F). The minimum temperatures in December can plunge to -22°C (-7°F), while November sees milder lows around -15°C (5°F). Precipitation also increases in December with 76 mm (3.0 in) over 13 days, compared to November's 47 mm (1.9 in) over 10 days. Humidity remains high in both months, with December slightly higher at 96% compared to 94% in November. For more specific details, you can view Sundsvall weather in November.
As December unfolds in Sundsvall, the chill of winter truly sets in, bringing a stark contrast to the milder months earlier in the year. With average temperatures plummeting, the city experiences a frosty ambiance that hugs the landscape, while precipitation becomes more frequent, leading to a blend of snow and rain that characterizes the season. Coupled with high humidity levels, the air feels crisp and biting, reminding residents and visitors alike that the heart of winter has arrived. For those curious about the overall climate patterns and seasonal shifts, further insights can be found at Sundsvall Climate.