Last updated: August 21, 2025
December in Vaasa, Finland presents a chilly climate marked by a maximum temperature of 6°C (43°F) and an average of -2°C (29°F), dipping down to a brisk minimum of -24°C (-11°F). With 53 mm (2.1 in) of precipitation spread across 14 days, residents and visitors alike can expect a blend of snow and rain. The month is characterized by high humidity, averaging a notable 93%, making the cold feel even more penetrating. This combination of frosty temperatures and dampness sets the stage for a quintessential winter experience in this coastal Finnish city.
In Vaasa, Finland, December marks a notable transition as temperatures plunge into the heart of winter. The month welcomes frigid conditions, with minimum temperatures plummeting to -24°C (-11°F), while the average hovers around -2°C (29°F). Though the chilliness is palpable, daytime highs reach a modest 6°C (43°F), allowing for brief respites from the cold. This month aligns with the frigid trend set from late autumn, with temperatures consistently lower than the preceding months. As the year draws to a close, the deepening cold invites a serene beauty to the snow-covered landscape, establishing December as a quintessential winter month in Vaasa.
In December, Vaasa, Finland experiences a notable shift in weather patterns with 53 mm (2.1 in) of rain spread over 14 days, ushering in the winter transition. This month's precipitation volume slightly decreases from the wetter fall months, such as October and November; however, it still maintains a consistent rhythm of damp days, reflecting an average of over two rain events each week. Interestingly, December’s precipitation not only offers a cozy ambiance but also signifies the beginning of colder temperatures, contrasting with the rising totals seen in the late summer months of August and September. As winter approaches, the balance between precipitation and cold sets the stage for the snowy scenes that characterize Finnish winters.
In Vaasa, Finland, December marks a subtle shift in humidity as it sits at 93%, maintaining a level consistent with the robust humidity levels seen in the preceding months of November and October, both at 92%. This time of year, humidity is notably higher than during the spring and summer, where it dipped to its lowest at 74% in June. Throughout the year, a gradual decline is observed from the frosty peaks of 95% in January to the relative lows of 77% in May, before stabilizing as winter reasserts itself. The December humidity thus reflects the region's characteristic dampness during the colder months, offering a reminder of Vaasa's maritime climate that keeps the air rich and crisp as the year draws to a close.
In Vaasa, Finland, the December UV Index remains at a low 1, reflective of the overall winter trend where UV exposure is minimal. As the year winds down, the consistent low exposure category means residents can enjoy the outdoors for about 45 minutes without significant risk of sunburn. This pattern, seen from January through November, highlights how winter months in Vaasa typically offer a gentle reprieve from stronger UV rays experienced during the sunnier seasons. Despite the colder weather, it's always wise to stay informed about UV levels, which you can check further at Vaasa UV Index.
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In Vaasa, Finland, the December sunshine often takes a backseat, with only 44 hours of daylight illuminating the stark winter landscape. This meager total starkly contrasts with the burgeoning brightness of the spring months, where sunshine blossoms as early as March with 274 hours, peaking in the summer. From May's 463 hours to June's impressive 509 hours, the long, sun-drenched days create a vivid tapestry of light that starkly juxtaposes the dimness of December. As the year transitions, the rapidly decreasing daylight from November's 105 hours to December's minimal glow highlights the profound impact of seasonal shifts in this northern city. The rhythm of light and darkness not only defines the character of each month but also beckons residents to cherish the fleeting moments of sunshine during winter's embrace.
In Vaasa, Finland, the likelihood of sunny weather takes a noticeable dip in December, with only a 20% chance of sunshine. This decrease is part of a broader trend that sees the sun peeking out less frequently as winter approaches. Following the brisk daylight of October, which offers a 15% chance, December presents a stark contrast to the sunnier months of summer, where chances soar above 50%. February shows a rebound to 27%, hinting at a gradual return to brighter days as the new year progresses. As we transition through the winter months, it becomes clear that December is among the cloudiest, with sunshine becoming a cherished rarity in this picturesque northern town.
In Vaasa, Finland, the daylight duration experiences a dramatic ebb and flow throughout the year. December is particularly stark, offering a mere 4 hours of daylight, marking the year's low point just before the winter solstice. As the seasons transition into spring, daylight begins to creep back, rising steadily to 11 hours by March and peaking at 20 hours in the vibrant days of June. This gradual increase highlights the region's stark contrast between the dark winter months and the bright, extended days of summer. As August gives way to September, daylight begins to wane once again, creating a cyclical rhythm that underscores both the beauty and challenges of life in this northern locale. Each month unfolds a unique tapestry of light, influencing both the climate and the daily lives of its inhabitants.
As December casts its chilly embrace over Vaasa, Finland, the wind begins to pick up, averaging around 4.0 m/s (9 mph). This month marks a slight increase from the calmer summer months, where the winds hovered between 3.2 m/s and 3.6 m/s. Notably, the transition to winter leads to stronger gusts compared to the earlier part of the year, including a surge in October when speeds reached an average of 4.8 m/s (11 mph). The colder months of November and December maintain these invigorating breezes, providing a refreshing reminder of nature's power as the city prepares for the depths of winter. Overall, December stands as a transitional marker, bridging quieter winds with the more robust gusts expected in the heart of winter.
Weather in Vaasa varies notably across the year, with each month offering distinct climate conditions. This page compares December’s weather to other months in Vaasa, focusing on differences in temperature, rainfall, humidity, and UV levels.
In December, the weather is marked by an average temperature of -2°C (29°F) and experiences relatively high precipitation of 53 mm (2.1 in) over 14 days, alongside a humidity level of 93%. In contrast, January approaches with slightly colder average temperatures at -3°C (26°F), yet it offers a bit more sunshine as precipitation decreases to 38 mm (1.5 in) over just 9 days. The humidity in January rises slightly to 95%, making the air feel even colder. For a detailed look at January weather, you can visit Vaasa weather in January.
December and February share a similar cold snap, but February tends to have slightly milder temperatures. In December, the average temperature hovers around -2°C (29°F), with daytime highs reaching up to 6°C (43°F). In contrast, February sees an average of -5°C (24°F), with maximum temperatures just a degree higher at 7°C (44°F). Precipitation is more frequent in December, occurring on 14 days and totaling 53 mm (2.1 in), while February experiences fewer rainy days, with just 7 days of precipitation totaling 43 mm (1.7 in). Interestingly, both months maintain high humidity levels around 93%, contributing to the cold, brisk feel of winter in the region. For more detailed information, check out Vaasa weather in February.
December and March in Vaasa present distinct yet somewhat similar winter climates. In December, temperatures range from a minimum of -24°C (-11°F) to a maximum of 6°C (43°F), with an average of -2°C (29°F). The month experiences higher precipitation, totaling 53 mm (2.1 in) across 14 days, and a humidity level of 93%. In contrast, March sees slightly lower humidity at 91%, with temperatures ranging from a minimum of -25°C (-13°F) to a maximum of 10°C (49°F) and an average of -1°C (30°F). Additionally, March has less precipitation at 41 mm (1.6 in) over 11 days. For more detailed insights into the weather during this month, check out Vaasa weather in March.
December and April present contrasting weather experiences. In December, temperatures can plunge as low as -24°C (-11°F), with an average creeping just below freezing at -2°C (29°F) and a maximum of 6°C (43°F). The month sees a substantial amount of precipitation, around 53 mm (2.1 in), spread over 14 days, accompanied by high humidity at 93%. In stark contrast, April brings a noticeable warming trend, with temperatures ranging from a minimum of -13°C (9°F) to a comfortable maximum of 21°C (70°F) and an average of 3°C (37°F). Precipitation is lighter at 39 mm (1.5 in) over just 7 days, with lower humidity at 85%. For more details on April weather, check Vaasa weather in April.
December and May offer strikingly different weather conditions. In December, temperatures can plummet as low as -24°C (-11°F), with an average of -2°C (29°F) and a maximum of only 6°C (43°F). The month is characterized by high humidity at 93% and a significant amount of precipitation, measuring 53 mm (2.1 in) over 14 days. In contrast, May brings a more moderate climate, with temperatures ranging from a chilly minimum of -4°C (26°F) to a pleasant maximum of 25°C (78°F) and an average temperature of 8°C (47°F). The precipitation in May is less, totaling 42 mm (1.6 in) over just 7 days, and the humidity is notably lower at 77%. For more detailed information about May weather, you can check Vaasa weather in May.
December and June present starkly contrasting weather in Vaasa. In December, temperatures plunge to a chilling minimum of -24°C (-11°F), with an average hovering around -2°C (29°F) and a maximum of 6°C (43°F). The month is characterized by high humidity at 93% and frequent precipitation on 14 days, totaling 53 mm (2.1 in). In stark contrast, June boasts more temperate conditions, with minimum temperatures of 1°C (34°F), average highs reaching 15°C (59°F), and maximums soaring to 29°C (85°F). While June still receives some rainfall—57 mm (2.2 in) across 10 days—the humidity is noticeably lower at 74%. For a deeper dive into June weather specifically, you can check Vaasa weather in June.
December and July present a stark contrast in weather conditions. In December, temperatures can plummet to a minimum of -24°C (-11°F), with an average of -2°C (29°F) and a maximum of 6°C (43°F). The month is characterized by high humidity at 93% and frequent precipitation, averaging 53 mm (2.1 in) over 14 days. In sharp contrast, July brings much warmer weather, with a minimum temperature of 5°C (42°F) and an average of 17°C (63°F), reaching highs of up to 32°C (90°F). While July experiences slightly higher precipitation totals of 59 mm (2.3 in) over just 10 days, the humidity remains lower at 80%. For more details on July's climate, visit Vaasa weather in July.
When comparing the weather in December and August, stark contrasts emerge. December experiences frigid temperatures, with an average of -2°C (29°F) and lows plunging to -24°C (-11°F), while humidity remains high at 93%. In contrast, August offers a much more temperate climate with averages around 15°C (60°F) and a peak of 29°C (85°F), accompanied by lower humidity at 82%. Precipitation is slightly more abundant in August, totaling 84 mm (3.3 in) over 13 days, compared to December's 53 mm (2.1 in) over 14 days. For more details, you can view Vaasa weather in August.
When comparing the weather in December and September, the differences are quite stark. December experiences much colder temperatures, with averages ranging from a chilling -24°C (-11°F) to a maximum of 6°C (43°F), while September enjoys a milder climate with temperatures spanning from 0°C (32°F) to a comfortable 24°C (75°F). Precipitation levels are also notable; December sees about 53 mm (2.1 in) over 14 days, whereas September receives more, at 75 mm (2.9 in) over just 13 days. The humidity is slightly higher in December at 93%, compared to September’s 88%. For more detailed insights on September weather, visit Vaasa weather in September.
In comparing the weather between October and December, October tends to be milder with average temperatures ranging from a minimum of -9°C (17°F) to a maximum of 17°C (64°F). In contrast, December experiences much colder temperatures, with averages dipping down to a minimum of -24°C (-11°F) and only reaching a maximum of 6°C (43°F). Although October receives slightly more precipitation (84 mm) over 15 days, December is characterized by high humidity levels at 93% despite having lower total precipitation of 53 mm over 14 days. For a detailed look at October weather specifics, you can refer to Vaasa weather in October.
December brings colder temperatures compared to November, with minimums plunging to -24°C (-11°F) and an average temperature of -2°C (29°F), whereas November's temperatures range from a minimum of -17°C (2°F) to an average of 2°C (36°F). While both months experience significant precipitation, December sees slightly less with 53 mm (2.1 in) over 14 days, compared to November's 57 mm (2.2 in) across 10 days. Humidity levels remain fairly consistent, with December at 93% and November at 92%. For a detailed look at what to expect, check out Vaasa weather in November.
December in Vaasa ushers in a chilling transformation, as temperatures dip significantly compared to the preceding months. With an average temperature settling around -2°C (29°F) and the potential to plunge as low as -24°C (-11°F), the month embodies the heart of winter. This stark change is further marked by increased precipitation, with approximately 14 days drenched in wintery conditions, contributing to a notable humidity level of 93%. The combination of cold temperatures and frequent snow or rain gives December a unique ambiance—one that highlights the beauty and challenge of the winter season. For a deeper understanding of how December's weather fits within the broader climate trend, visit Vaasa Climate.