Last updated: August 21, 2025
December in Oulu, Finland, features a chilly embrace as temperatures fluctuate between a maximum of 4°C (40°F) and a frigid minimum of -24°C (-12°F), with an average temperature resting at -5°C (24°F). The month's high humidity level of 99% contributes to a frosty atmosphere, while 58 mm (2.3 in) of precipitation falls over 14 days, often leaving the landscape blanketed in a soft layer of snow. This wintry wonderland creates an enchanting backdrop, perfect for those seeking a traditional Finnish experience during the holiday season.
In Oulu, Finland, December ushers in the heart of winter, with temperatures dipping significantly as the month unfolds. The average temperature sits around -5°C (24°F), reflecting a chill that permeates the air, while the nighttime lows can plunge to a bracing -24°C (-12°F). Despite the cold, the month encourages a cozy charm, where layers of snow blanket the landscape and the crisp air invigorates the spirit. Daytime highs reaching up to 4°C (40°F) provide a brief respite, yet the overall trend of steadily decreasing temperatures from the preceding months cements December's wintry status. Whether bundled up for a stroll or enjoying a warm beverage indoors, December in Oulu is a true winter experience.
As the year draws to a close, December in Oulu, Finland, showcases a transition into wintry weather with 58 mm (2.3 in) of precipitation falling over 14 days. This marks a slight decrease from the wetter months of autumn, yet it maintains a consistent rhythm similar to November, which recorded 62 mm. Notably, December's precipitation often manifests as light snow, contributing to the serene, snowy landscape the city is known for during the holiday season. This steady precipitation trend reflects Oulu's characteristic climate, where moisture is fairly evenly distributed throughout the colder months, setting the stage for a picturesque winter wonderland.
In December, Oulu, Finland experiences a notable rise in humidity, reaching an impressive 99%. This peak reflects a trend of increasing moisture levels as the year draws to a close, following closely behind November’s consistent 95%. Throughout the colder months, from January to December, humidity steadily remains high, starting from a maximum of 100% in January and gradually tapering down until the spring months of April and May. The transition from mid-year shows lower humidity levels, peaking during the warmer summer months. However, as winter returns, the humidity steadily climbs back, underscoring the region's characteristic dampness during these colder months. This cycle of humidity encapsulates the essence of Oulu's climate, showcasing a stark contrast between the cooler, wetter winter and the moderately humid summer.
In December, Oulu experiences a low UV Index of 1, maintaining a consistent trend seen throughout the colder months. This rating indicates minimal risk from sun exposure, with a burn time of 45 minutes for fair-skinned individuals. The UV Index has gradually transitioned from higher levels in the summer, peaking at 6 in June and July, to the comforting low levels typical of late autumn and winter. As daylight becomes scarce and temperatures drop, outdoor enthusiasts can safely enjoy their activities without the same level of concern for UV exposure. For more detailed insights on UV levels throughout the year, check out Oulu UV Index.
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Oulu, Finland, experiences a striking shift in sunlight throughout the year, with December steeped in the depths of winter's shadow, offering just 20 hours of sunlight. This stark decrease follows the brisk days of November, which sees only 68 hours of brightness. However, there is hope on the horizon as the days begin to stretch with the arrival of January, bringing a modest 33 hours of sunshine. As the months progress into spring, sunlight flourishes exponentially, culminating in a vibrant 514 hours by the peak of summer in June. The telltale rise from March's 269 hours to the sun-drenched days of May at 454 hours showcases the dramatic transformation in Oulu’s landscape, illustrating the dance of seasons where winter's grip gradually succumbs to the warm embrace of summer.
As December rolls into Oulu, Finland, the likelihood of sunshine takes a notable dip, standing at just 19%. This marks a decline from the previous months, with the sun showing itself a bit more frequently in autumn, especially in November at 20%. Looking back through the year, it's clear that Oulu experiences a gradual transition from brighter days in summer, peaking at a sunny 56% in July, to the gloomier, darker winter months. The trend reveals that while sunshine is sparse in December, it signals the onset of winter's embrace, where cozy indoor gatherings often replace outdoor adventures.
In Oulu, Finland, daylight duration undergoes a dramatic transformation throughout the year, culminating in a stark decline by December, when residents can expect just 3 hours of daylight. As winter embraces the city, this is a notable contrast to the vibrant 21 hours of sunlight that grace the region in June. Following the restful days of summer, the gradual decrease in daylight begins in July, tapering off through the autumn months. By November, the clock shows a mere 6 hours, setting the stage for December's scarce illumination. This seasonal shift highlights the profound impact of latitude on daily life, inviting locals and visitors alike to embrace the beauty of wintry twilight in the heart of northern Finland.
As December settles in Oulu, Finland, the wind begins to whisper a chill, with an average speed of 3.4 m/s (8 mph). This slight uptick from November’s average aligns with the trend observed throughout the year, where wind speeds fluctuate and peak around October, reaching 4.1 m/s (9 mph). Following this peak, the breezes of December transition the city into a wintery embrace, with speeds returning to a more moderate pace reminiscent of earlier months. Notably, the consistent average speeds between 3.1 m/s (7 mph) and 4.1 m/s (9 mph) highlight Oulu's gentle yet persistent winds, creating an atmosphere that is both invigorating and serene as the year draws to a close.
Weather in Oulu varies notably across the year, with each month offering distinct climate conditions. This page compares December’s weather to other months in Oulu, focusing on differences in temperature, rainfall, humidity, and UV levels.
In comparing the weather of December and January, December generally sees milder temperatures, with averages around -5°C (24°F) and maximums reaching up to 4°C (40°F). However, the month is marked by high humidity at 99% and significant precipitation, totaling 58 mm (2.3 in) over 14 days. In contrast, January tends to be colder, with a minimum temperature dropping to -32°C (-25°F) and an average of -7°C (19°F). Although January experiences slightly less precipitation at 40 mm (1.6 in) over 10 days, it maintains a humidity of 100%, creating a crisp, biting cold that defines the month. For more details about the weather conditions, visit Oulu weather in January.
December and February present quite similar winter conditions, though there are notable differences in their weather patterns. In December, temperatures range from a minimum of -24°C (-12°F) to an average of -5°C (24°F) with a maximum of 4°C (40°F). The month sees about 58 mm (2.3 in) of precipitation over 14 days, coupled with high humidity at 99%. In contrast, February tends to be slightly colder, with temperatures dipping to a minimum of -25°C (-14°F) and an average of -8°C (17°F), while the maximum reaches 5°C (42°F). Precipitation in February is less frequent, totaling 40 mm (1.6 in) over only 9 days, and humidity remains slightly lower at 98%. For a detailed look at February weather in Oulu, check out Oulu weather in February.
In December, temperatures can plummet to a minimum of -24°C (-12°F), with an average hovering around -5°C (24°F) and a maximum reaching 4°C (40°F). The month sees a fair amount of precipitation, totaling 58 mm (2.3 in) over 14 days, accompanied by high humidity at 99%. In contrast, March experiences slightly milder temperatures, with a minimum of -26°C (-15°F) and an average of -4°C (25°F), while the maximum can rise to 7°C (45°F). Precipitation in March is less, at 41 mm (1.6 in) over 11 days, and humidity remains high at 95%. For more detailed information on March conditions, you can visit Oulu weather in March.
December and April in Oulu present stark contrasts in weather conditions. December is characterized by frigid temperatures, with a minimum of -24°C (-12°F), an average of -5°C (24°F), and a maximum reaching just 4°C (40°F). This month experiences significant humidity at 99% and sees precipitation spread over 14 days, totaling 58 mm (2.3 in). In contrast, April brings a noticeable warming trend, with minimum temperatures around -13°C (9°F) and an average of 1°C (34°F), peaking at 14°C (57°F). While precipitation decreases to 38 mm (1.5 in) over only 7 days, humidity drops to 87%, signaling the approaching spring. For more details on April weather in Oulu, check out Oulu weather in April.
December and May present stark contrasts in weather conditions. In December, temperatures can plummet to a minimum of -24°C (-12°F), with an average around -5°C (24°F) and highs reaching only 4°C (40°F). The month is characterized by significant humidity at 99% and frequent precipitation, occurring over 14 days, totaling 58 mm (2.3 in). In comparison, May offers a much milder climate with minimum temperatures of -6°C (21°F) and an average of 7°C (45°F), peaking at a comfortable 27°C (80°F). Precipitation decreases to 49 mm (1.9 in) over just 8 days, and humidity lowers to 81%. For a deeper dive into the pleasant weather of May, you can visit Oulu weather in May.
December and June present striking contrasts in weather. December boasts frigid temperatures, with lows reaching -24°C (-12°F) and average temperatures around -5°C (24°F), while the maximum only climbs to 4°C (40°F). The month is characterized by high humidity levels at 99%, and it experiences 14 days of precipitation totaling 58 mm (2.3 in). In contrast, June sees a significant shift, with temperatures ranging from a minimum of 1°C (34°F) to an average of 14°C (58°F), and highs soaring to 29°C (85°F). The warmer month features slightly higher total precipitation at 60 mm (2.4 in) but over just 9 days, and humidity is more manageable at 77%. For more details, check out Oulu weather in June.
December and July exhibit stark contrasts in weather for Oulu. In December, temperatures plunge to a minimum of -24°C (-12°F) with an average around -5°C (24°F), while July offers a much warmer climate, with minimums of 4°C (39°F) and an average of 17°C (63°F). Precipitation is slightly higher in July at 73 mm (2.9 in) compared to December's 58 mm (2.3 in), although December experiences rain on more days, with precipitation occurring on 14 days versus 11 days in July. Additionally, the humidity in December is exceptionally high at 99%, creating a stark contrast to July's more comfortable 79%. For more detailed information, you can check Oulu weather in July.
The weather in December and August presents a stark contrast in Oulu. In December, temperatures can plummet to a chilling minimum of -24°C (-12°F), with an average of -5°C (24°F) and a maximum of only 4°C (40°F). The month is characterized by high humidity at 99% and substantial precipitation, totaling 58 mm (2.3 in) over 14 days. In sharp contrast, August offers a much milder climate, with temperatures ranging from a minimum of 1°C (34°F) to a warm average of 14°C (58°F) and a maximum reaching 31°C (88°F). Although it has higher precipitation at 91 mm (3.6 in) across the same number of rainy days, the humidity remains relatively lower at 84%. For more details, check out Oulu weather in August.
December and September present strikingly different weather conditions. In December, temperatures plunge to a minimum of -24°C (-12°F) with an average of -5°C (24°F) and a maximum of 4°C (40°F), creating a frigid environment marked by high humidity levels at 99%. The month experiences 58 mm (2.3 in) of precipitation over 14 days, often in the form of snow. In contrast, September boasts much milder temperatures, ranging from a minimum of -4°C (24°F) to an average of 10°C (49°F) and a maximum of 24°C (75°F). While September sees slightly higher precipitation at 71 mm (2.8 in) over 13 days, humidity is lower at 90%. For a detailed look at Oulu's weather specifics during September, you can visit Oulu weather in September.
December and October showcase contrasting weather patterns in Oulu. In December, temperatures plummet, with a minimum of -24°C (-12°F) and an average of -5°C (24°F), while October enjoys milder weather, where temperatures range from -12°C (10°F) to a maximum of 18°C (64°F). Although December has less precipitation at 58 mm (2.3 in) over 14 days, it feels significantly colder due to the high humidity of 99%. In contrast, October experiences more rainfall at 81 mm (3.2 in) across 15 days, coupled with slightly lower humidity at 95%. For a more detailed look at October's weather, visit Oulu weather in October.
In comparing the weather between December and November, December tends to be colder overall, with average temperatures reaching -5°C (24°F) compared to November's average of -1°C (31°F). December also features more extreme lows, with a minimum temperature of -24°C (-12°F) versus November's minimum of -18°C (0°F). Both months see a similar amount of precipitation, with December recording 58 mm (2.3 in) over 14 days and November slightly higher at 62 mm (2.4 in) over 13 days. Humidity levels are higher in December at 99%, making the cold feel even more biting. If you want to delve deeper into November weather specifics, you can explore more at Oulu weather in November.
December in Oulu presents a stunning contrast to the milder months, as the chill sets in with an average temperature well below freezing, plunging as low as -24°C. This month is characterized by a remarkable 99% humidity that creates a crisp atmosphere, complemented by approximately 58 mm of precipitation over 14 days, often falling as snow. The shorter daylight hours and frosty landscapes transform the city into a winter wonderland, inviting both locals and visitors to embrace the enchantment of the season. For more insights into how this month fits into the overall climate of Oulu, visit Oulu Climate.