Last updated: August 21, 2025
December in Lappeenranta, Finland brings a captivating winter landscape, with temperatures typically ranging from a chilly -20°C (-4°F) at night to a mild maximum of 5°C (42°F) during the day. The month averages around -3°C (27°F), ensuring a brisk and invigorating atmosphere. With 74 mm (2.9 in) of precipitation spread across 16 days, residents experience a mix of snow and rain, which adds to the enchanting charm of the season. The air is notably humid at 95%, creating a frosty veneer that transforms the city into a winter wonderland, perfect for holiday festivities and seasonal exploration.
In Lappeenranta, Finland, December ushers in the chill of winter, with temperatures showcasing a steady drop as the month progresses. The minimum temperature hovers around a brisk -20°C (-4°F), while the average sits at a notably crisp -3°C (27°F), providing a preview of the cold that peaks in January. Despite the frigid air, the maximum temperature finally edges up to around 5°C (42°F), hinting at the possibility of a fleeting warmth during the day. This pattern illustrates not only the depths of winter but also the gradual transition as days slowly lengthen and temperatures begin to rise after the solstice. As the snow blankets the landscape, Lappeenranta transforms into a winter wonderland, inviting both locals and visitors to embrace the season's beauty.
In December, Lappeenranta experiences a significant uptick in precipitation, totaling 74 mm (2.9 in) over the month, which matches the levels seen in the earlier summer months like July. Notably, this precipitation is spread across 16 days, making December one of the wetter months in the region. This trend of increased precipitation contrasts with the drier late autumn period, as November recorded only 50 mm (2.0 in) over 11 days. The consistent precipitation during December signals the onset of winter conditions, contributing to the distinctly crisp atmosphere as the city transitions fully into the colder months.
December in Lappeenranta, Finland, sees humidity levels averaging 95%, reflecting a slight dip from the preceding months, which hover around 93% in November and October. This trend illustrates a winter season characterized by persistently high moisture in the air, setting the stage for the cold, crisp days ahead. As the year transitions from autumn to winter, the humidity gradually decreases, reaching its lowest point in the spring months, illustrating the region's seasonal shifts. The relatively stable humidity in December suggests a continuous embrace of the cold, enhancing the wintry atmosphere that defines this picturesque Finnish town.
In Lappeenranta, Finland, the UV Index experiences a notable decline as the year progresses towards winter, reaching a low of 1 in December. This low exposure category indicates minimal risk for sunburn, allowing residents and visitors to enjoy outdoor activities without significant concern for UV damage. The burn time remains consistent throughout the month at 45 minutes, providing ample time for safe sun exposure, similar to November. Interestingly, from the moderate levels seen in spring and early summer, the UV Index sharply drops as daylight wanes, illustrating the seasonal variations in UV radiation. For more detailed information, check out Lappeenranta UV Index.
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In the heart of winter, December in Lappeenranta experiences a notable dip in sunshine, with only 24 hours illuminating the days. This stark contrast to the radiant 31 hours of January highlights a gradual increase in daylight as the year progresses, peaking in the vibrant months of late spring and early summer, where sunshine flourishes, reaching 436 hours in May and even 479 hours in June. As autumn approaches, the sunlight wanes once more, ultimately leading to the sparse winter days that define December. This cyclical pattern reinforces the charm of Lappeenranta's seasons, making the rare glimpses of sunlight in December a cherished moment amidst the winter chill.
In Lappeenranta, Finland, the chances of sunny weather in December are quite slim, hovering around a mere 7%. This low probability is indicative of the winter months, which bring diminishing daylight and increasing cloud cover. As we trace the trajectory of sunny days throughout the year, a clear trend emerges: after a gradual rise in sunshine from January's dismally low 2% to a peak of 56% in the summer months of June and July, the chances dip again sharply as autumn sets in, culminating in November's 11% chance and finally settling at December's low point. This seasonal pattern underscores the challenges of anticipating sunny moments during the cold, dark days of winter in this charming Finnish city.
In Lappeenranta, Finland, December marks a significant low point in daylight duration, with only 5 hours of sunshine illuminating the day. This shrunken daylight is part of a seasonal trend where daylight gradually decreases from the vibrant 19 hours seen in June, tapering off through the autumn months. As the year transitions from autumn to winter, daylight shrinks from 7 hours in November to the shortest day of the year in December, before the gradual increase begins anew in January. The cyclical nature of daylight hours in Lappeenranta highlights the stark contrast between the bright summer days and the dark winter months, creating a unique rhythm to life in this northern locale.
As December sweeps into Lappeenranta, Finland, the winds begin to pick up a gentle strength, averaging 3.7 m/s (8 mph). This slight increase from the calmer summer months, where winds hovered around 2.9 m/s (6-7 mph), signals the transition into winter's embrace. The autumn months saw a notable rise in wind speed, peaking in October with 4.5 m/s (10 mph) before settling a tad lower in November and December. This rhythmic pattern reflects a consistent trend in Lappeenranta's climate, as the winds strengthen towards year-end, creating a crisp, invigorating atmosphere that heralds the frosty days ahead.
Weather in Lappeenranta varies notably across the year, with each month offering distinct climate conditions. This page compares December’s weather to other months in Lappeenranta, focusing on differences in temperature, rainfall, humidity, and UV levels.
In December, temperatures in Lappeenranta range from a minimum of -20°C (-4°F) to a maximum of 5°C (42°F), with an average temperature of -3°C (27°F). The month receives 74 mm (2.9 in) of precipitation over 16 days, and the humidity is quite high at 95%. In contrast, January sees slightly colder conditions, with minimum temperatures dropping to -25°C (-12°F) but an average temperature of -4°C (24°F) and a maximum reaching 7°C (45°F). Precipitation decreases to 48 mm (1.9 in) over just 11 days, while humidity rises to 98%. Overall, January is characterized by colder temperatures and slightly lower precipitation compared to December. For more detailed information, you can visit Lappeenranta weather in January.
December and February showcase notably cold climates, yet they possess distinct characteristics. In December, temperatures fluctuate between a minimum of -20°C (-4°F) and a maximum of 5°C (42°F), with an average of -3°C (27°F). This month experiences a higher precipitation level of 74 mm (2.9 in) over 16 days, accompanied by a humidity of 95%. In contrast, February presents slightly colder conditions, with temperatures dropping further to a minimum of -28°C (-18°F) and an average of -5°C (23°F). However, it sees a decrease in precipitation, totaling 54 mm (2.1 in) across just 11 days, with humidity at a similar high of 96%. For more detailed insights on February weather, check out Lappeenranta weather in February.
December and March present contrasting winter weather conditions, despite both being part of the colder season. In December, temperatures hover between a minimum of -20°C and a maximum of 5°C, with an average of -3°C. The month experiences significant precipitation, totaling 74 mm over 16 days, and high humidity at 95%. Conversely, March sees slightly milder temperatures, ranging from a minimum of -24°C to a maximum of 11°C, with an average of -2°C. Precipitation is lower at 48 mm over 13 days, and humidity remains relatively high at 93%. For a detailed look at March weather, you can explore Lappeenranta weather in March.
The weather in December is characterized by much colder temperatures, with average lows reaching -20°C (-4°F) and highs barely exceeding 5°C (42°F). In contrast, April brings a significant warming trend with average temperatures rising to around 3°C (38°F), peaking at a pleasant 20°C (68°F). December experiences high humidity levels at 95% and considerable precipitation, totaling 74 mm (2.9 in) over 16 days, while April, though it still has some moisture, sees lower precipitation at 44 mm (1.7 in) spread across 12 days and slightly reduced humidity at 88%. For more detailed information on the weather conditions in this spring month, you can visit Lappeenranta weather in April.
In December, temperatures in Lappeenranta can plunge to a chilling minimum of -20°C (-4°F), with an average of -3°C (27°F) and a max reaching only 5°C (42°F). The month is also characterized by high humidity at 95% and frequent precipitation, totaling 74 mm (2.9 inches) over 16 days. In contrast, May brings a significant warming trend, with temperatures ranging from a minimum of -4°C (26°F) to a comfortable average of 10°C (50°F), peaking at a pleasant 28°C (83°F). Precipitation decreases to 51 mm (2.0 inches) across just 10 days, and humidity drops to a more comfortable 77%. For more details on May weather, check out Lappeenranta weather in May.
December and June present striking contrasts in weather conditions. In December, temperatures can plunge to a minimum of -20°C (-4°F), with an average high of only 5°C (42°F), creating a chilly backdrop. The month sees significant precipitation across 16 days, accompanied by high humidity levels at 95%, resulting in a cold and damp atmosphere. In stark contrast, June warms up to a minimum of 2°C (36°F) and can rise to a comfortable average of 16°C (62°F) and a maximum of 31°C (89°F). With lower humidity at 75% and less frequent precipitation over just 10 days, June offers a more pleasant and dry climate. For more detailed information, you can check Lappeenranta weather in June.
December and July present stark contrasts in weather conditions. In December, temperatures in Lappeenranta can plummet to a frigid minimum of -20°C (-4°F) and typically hover around an average of -3°C (27°F), occasionally reaching a maximum of 5°C (42°F). The month is characterized by high humidity levels at 95% and considerable precipitation over 16 days, totaling 74 mm (2.9 in). In contrast, July boasts a much warmer climate, with temperatures ranging from a minimum of 7°C (46°F) to a pleasant average of 18°C (64°F) and peaks of 32°C (89°F). Although July also experiences 74 mm (2.9 in) of precipitation, it occurs over fewer days—13 in total—and maintains a lower humidity of 82%. For more details on July weather, check out Lappeenranta weather in July.
December and August present stark contrasts in weather, reflecting the drastic seasonal shifts. In December, temperatures plummet to a minimum of -20°C (-4°F) and can reach a maximum of only 5°C (42°F), with an average around -3°C (27°F). The month is characterized by high humidity at 95% and considerable precipitation, falling over 16 days with a total of 74 mm (2.9 in). In contrast, August offers a much milder climate with minimum temperatures around 7°C (45°F) and maximums reaching 30°C (86°F), averaging at 16°C (61°F). The month sees slightly more precipitation at 88 mm (3.4 in) over 15 days, but with lower humidity at 84%. For more details, visit Lappeenranta weather in August.
In December, the weather takes a notable turn towards the cold, with temperatures ranging from a minimum of -20°C (-4°F) to a maximum of 5°C (42°F), and an average temperature around -3°C (27°F). The month sees significant precipitation of 74 mm (2.9 in), occurring over 16 days, and the humidity is quite high at 95%, contributing to a chilly and damp atmosphere. In contrast, September offers a much milder climate, with temperatures starting at 0°C (32°F) and peaking at 23°C (73°F) for an average of 11°C (53°F). Precipitation in September is slightly less at 67 mm (2.6 in) over 13 days, and humidity is lower at 90%, making it a more comfortable time of year. For a closer look at the weather patterns in September, you can explore Lappeenranta weather in September.
When comparing the weather in December and October, it's evident that December is significantly colder, with average temperatures hovering around -3°C (27°F) compared to October’s milder average of 6°C (44°F). The minimum temperatures in December plunge to a biting -20°C (-4°F), while October enjoys a gentler chill with a minimum of -4°C (25°F). Precipitation levels are relatively similar, with December receiving 74 mm (2.9 in) over 16 days and October slightly higher at 76 mm (3.0 in) over 14 days. Both months experience high humidity, but December's 95% makes it feel even colder and more damp compared to the 93% seen in October. For more detailed insights, check out Lappeenranta weather in October.
In December, the weather takes a notable turn, as temperatures dip significantly compared to November. With a minimum of -20°C (-4°F) and an average of -3°C (27°F), December is much colder than November, which experiences milder conditions with a low of -8°C (17°F) and an average of 2°C (36°F). Additionally, December sees more precipitation, totaling 74 mm (2.9 in) over 16 days, compared to November's 50 mm (2.0 in) across 11 days. The humidity slightly increases in December to 95%, up from 93% in November. For a closer look at the November climate, you can visit Lappeenranta weather in November.
In December, Lappeenranta's weather offers a striking contrast to other months as the temperature plummets, bringing the chill of winter to the forefront. With the average temperature hovering around -3°C, this month typically experiences some of the coldest conditions of the year, highlighted by minimum lows reaching -20°C on particularly frigid days. While the city is graced with a fair share of precipitation, with 16 days of rainfall or snow contributing to a total of 74 mm, the high humidity at 95% often magnifies the bite of the cold. If you're curious about how December stacks up against the rest of the year, explore more details at Lappeenranta Climate.