Last updated: August 21, 2025
In Rauma, Finland, December brings a chill that blankets the city in winter's embrace. With maximum temperatures reaching up to 6°C (44°F) and an average of 1°C (34°F), residents experience a diverse range of winter conditions. However, the crisp cold can dip to a biting minimum of -14°C (8°F), reminding everyone of the season's potential severity. Precipitation is common, with 76 mm (3.0 in) falling over 16 days, contributing to the wintry landscape. The air is laden with moisture, resulting in an average humidity level of 89% that adds to the atmospheric charm of Rauma’s December, perfect for cozy indoor gatherings or scenic walks through the snow-blanketed streets.
In December, Rauma, Finland, embraces the heart of winter with temperatures that range from a brisk -14°C (8°F) at night to a slightly milder 6°C (44°F) during the day. This month marks a definitive drop from the more moderate temperatures of November, as the average reaches just 1°C (34°F). Visitors can expect chilly conditions, ideal for bundling up and enjoying the festive atmosphere, while the landscape transforms into a serene winter wonderland. As December progresses, the city showcases its captivating beauty, making it a picturesque time to experience Rauma's charm, despite the cold.
In December, Rauma, Finland, experiences a notable uptick in precipitation, with 76 mm (3.0 in) of rain falling over 16 days. This increase is part of a broader pattern throughout the autumn and winter months, where moisture levels generally rise, culminating in October's peak of 101 mm. Interestingly, December's rainfall slightly surpasses that of November, which received 73 mm but over fewer days, suggesting a shift towards more frequent precipitation as the year ends. As winter sets in, residents can expect a wet and often gloomy final month, characteristic of the harsh Nordic climate, yet underscoring the beauty of Rauma’s winter landscape.
In December, Rauma, Finland, experiences a notable humidity level of 89%, creating a crisp and damp atmosphere as the year draws to a close. This figure is slightly lower than the peak monthly average seen in the early winter months, with November and October recording 91% and 90% respectively. As temperatures drop, the humidity tends to hover around the higher end of the scale from January through April, reflecting a consistent winter trend. However, it begins to wane in the late spring and summer months, hitting its lowest at 77% in May. The gradual increase in humidity from September through December highlights the transition into winter, emphasizing Rauma's chilly coastal climate in the dark days of the season, where moisture hangs in the air, setting the stage for those quintessential Finnish winters.
In Rauma, Finland, December marks a continuation of the low UV Index trend seen throughout the winter months, with an index of 1 indicating minimal risk from sun exposure. This category suggests that you can enjoy outdoor activities with little concern for sunburn, as the burn time is around 45 minutes. As the year progresses, a notable shift occurs in the spring when the UV Index begins to rise, peaking at 6 during the summer months of June and July. It's fascinating to observe how seasonal changes influence UV levels, reminding us to stay aware of sun safety as we transition from the low indices of winter to the more moderate and high levels in spring and summer. For more detailed information, check out the Rauma UV Index.
UV Risk Categories
In Rauma, Finland, the sunshine hours reveal a fascinating seasonal transformation. December, with its fleeting 64 hours of sunlight, starkly contrasts with the vibrant 495 hours basked in during the peak of summer. As the year unfolds, there is a visible trend of increasing brightness; from the chilly depths of winter, where January struggles with just 56 hours, to the lively bloom of late spring that sees a remarkable surge to 453 hours in May. Meanwhile, December's light softly hints at the longer days to come, as the transition towards spring begins with increasing hours throughout February and March. This cyclical dance of light reflects Rauma’s seasonal rhythm, inviting both residents and visitors to appreciate the unique charm of Finnish winters and the anticipation of brighter days ahead.
In Rauma, Finland, the likelihood of sunny weather takes a noticeable dip as December arrives, with only an 18% chance of sunshine. This trend highlights a stark contrast to the sunnier months preceding winter. While the early months of the year begin with a modest 7% in January, there is a gradual increase through spring, peaking at 54% in June and 62% in July, before the chance declines again as autumn sets in. By December, as daylight hours are at their shortest, residents and visitors can expect the cozy embrace of winter, rather than the warmth of the sun—an intriguing reminder of the seasonal shifts that characterize life in this beautiful Finnish coastal town.
As winter casts its long shadow over Rauma, Finland, December heralds the shortest days of the year, with daylight lasting a mere 5 hours. This stark reduction follows a gradual decline from the crisp brightness of summer, where June shines with almost 19 hours of light. As the year progresses through the warm months of May and June into the cooler depths of November, daylight dwindles significantly. By December, the vibrant glow of summer has faded, leaving the town in a tranquil twilight, inviting residents and visitors alike to embrace the cozy charm of the season as they await the returning light in January.
As December settles in Rauma, Finland, the winds pick up a brisk pace, averaging 6.5 m/s (15 mph), just a hair above November's 6.4 m/s. This signals a notable shift from the calmer summer months, where June and July see their lowest winds, averaging around 4.6 to 4.7 m/s (10 mph). As autumn transitions into winter, October emerges as the windiest month, boasting an impressive 7.6 m/s (17 mph), paving the way for December's gusty arrival. The trend indicates that while the intensity of the winds peaks in the late fall, they remain relatively strong through winter, creating an invigorating atmosphere that characterizes Rauma's December. Whether you're strolling through the snow-kissed streets or enjoying the scenic coastal views, the crisp December wind is an unmistakable part of the city's charm.
Weather in Rauma varies notably across the year, with each month offering distinct climate conditions. This page compares December’s weather to other months in Rauma, focusing on differences in temperature, rainfall, humidity, and UV levels.
December and January present a chilly yet somewhat similar climate, though January tends to be slightly colder on average. In December, temperatures range from a minimum of -14°C (8°F) to a maximum of 6°C (44°F), with an average of 1°C (34°F). The month sees considerable precipitation, totaling 76 mm (3.0 in) across 16 days, and humidity levels high at 89%. In contrast, January experiences even cooler temperatures, with a minimum of -15°C (5°F) and an average of -1°C (31°F), but the maximum remains the same at 6°C (44°F). Precipitation in January is lower, with 46 mm (1.8 in) expected over 11 days and slightly higher humidity at 92%. For more detailed insights into January's weather, you can visit Rauma weather in January.
December and February present distinct aspects of winter weather. In December, temperatures range from a chilly minimum of -14°C (8°F) to a mild maximum of 6°C (44°F), averaging around 1°C (34°F). The month experiences considerable precipitation, totaling 76 mm (3.0 in) over 16 days, contributing to the high humidity levels of 89%. In contrast, February typically sees even colder conditions, with minimum temperatures dropping to -15°C (5°F) and an average of -2°C (28°F), while the maximum remains stable at 6°C (43°F). Precipitation decreases to 42 mm (1.7 in) over just 9 days, and humidity rises slightly to 90%. For a closer look at February weather, check out Rauma weather in February.
In December, the weather is characterized by a relatively mild average temperature of 1°C (34°F), ranging from a minimum of -14°C (8°F) to a maximum of 6°C (44°F). The month experiences significant precipitation, totaling 76 mm (3.0 in) spread over 16 days, contributing to a consistently high humidity of 89%.
In contrast, March presents a slightly colder climate with an average temperature of 0°C (32°F), where temperatures dip to a minimum of -17°C (1°F) and can reach a maximum of 7°C (46°F). Precipitation is notably lower, at 43 mm (1.7 in) over just 10 days while maintaining the same high humidity level of 89%. For more detailed information on the weather during this time, visit Rauma weather in March.
In December, the weather is considerably colder, with temperatures ranging from a minimum of -14°C (8°F) to an average of 1°C (34°F), and a maximum of 6°C (44°F). The month experiences higher precipitation levels at 76 mm (3.0 in) over 16 days, contributing to a humid environment with humidity levels around 89%. In contrast, April sees a significant warming trend, with temperatures ranging from a minimum of -3°C (26°F) to an average of 3°C (38°F), peaking at 16°C (61°F). Precipitation decreases to 36 mm (1.4 in) over just 7 days, and humidity remains moderately high at 85%. For more specifics about the weather in April, you can refer to Rauma weather in April.
December and May present stark contrasts in weather conditions. In December, temperatures plunge to a minimum of -14°C (8°F) and average around 1°C (34°F), while highs rarely exceed 6°C (44°F). The month is characterized by significant humidity at 89% and frequent precipitation, occurring on about 16 days with a total of 76 mm (3.0 in). In contrast, May offers a much milder climate, with a minimum temperature of 0°C (32°F) and an average of 8°C (46°F), peaking at 19°C (66°F). The humidity decreases to 77%, and precipitation is less frequent, with only 39 mm (1.5 in) falling over 7 days. For more details on May weather, you can visit Rauma weather in May.
In December, temperatures can be quite frigid, with minimums reaching as low as -14°C (8°F) and an average of just 1°C (34°F), making it a stark contrast to the warmth of June, where the temperatures range from a minimum of 6°C (42°F) to a pleasant average of 14°C (57°F) and highs of up to 25°C (78°F). Additionally, December experiences significantly more precipitation, with 76 mm (3.0 in) spread over 16 days, compared to the much drier June, which sees only 42 mm (1.7 in) over 7 days. The humidity is also higher in December at 89%, whereas June offers a more comfortable 78%. For more details on the inviting June weather, check out Rauma weather in June.
December and July exhibit strikingly different weather patterns. In December, temperatures can drop as low as -14°C (8°F), with an average around 1°C (34°F) and a maximum of 6°C (44°F). The month is characterized by high humidity levels at 89% and considerable precipitation, totaling 76 mm (3.0 in) over approximately 16 days. In contrast, July features milder conditions, with minimum temperatures of 10°C (51°F), an average of 17°C (63°F), and a maximum that can reach up to 26°C (79°F). Precipitation remains similar at 77 mm (3.0 in), but falls over fewer days, specifically around 10 days, leading to a drier atmosphere with a humidity level of 78%. For those interested in more details, you can check out Rauma weather in July.
December and August present stark contrasts in weather. In December, temperatures plunge, with daily averages hovering around 1°C (34°F) and lows reaching as low as -14°C (8°F), creating a chilly atmosphere. The month experiences significant precipitation, totaling 76 mm (3.0 in) over 16 days, accompanied by high humidity levels of 89%. In contrast, August brings warmth, with average temperatures around 17°C (62°F) and highs of 25°C (77°F), making it a perfect summer month. Precipitation in August is slightly higher at 83 mm (3.3 in), but it occurs over fewer days, only 14. The humidity levels are also lower at 79%, contributing to a more comfortable feel during this time. For more specific details on August weather, you can visit Rauma weather in August.
December and September present contrasting weather conditions. In December, temperatures can plummet to a minimum of -14°C (8°F) with an average of 1°C (34°F) and a maximum of 6°C (44°F), showcasing the harshness of winter. Precipitation during this month is notable, with 76 mm (3.0 in) falling over 16 days, contributing to increased humidity levels of 89%. In contrast, September offers a milder experience, with temperatures ranging from a minimum of 5°C (41°F) to a pleasant average of 13°C (55°F) and a maximum of 22°C (71°F). The month sees slightly higher precipitation at 81 mm (3.2 in) over 13 days, while maintaining a slightly lower humidity of 86%. For more detailed information on September weather, you can visit Rauma weather in September.
December weather is characterized by much colder temperatures, with average highs only reaching around 6°C (44°F), and lows plunging to -14°C (8°F). In contrast, October enjoys milder conditions, with average temperatures averaging 8°C (47°F) and maximums of 15°C (60°F). While December sees slightly less precipitation at 76 mm (3.0 in) over 16 days, October experiences a bit more rainfall at 101 mm (4.0 in) across 17 days, contributing to the overall dampness of both months. Humidity levels remain quite similar, with December at 89% and October slightly higher at 90%. For more detailed information, you can visit Rauma weather in October.
December experiences slightly colder temperatures compared to November, with average highs around 6°C (44°F) and lows dipping to -14°C (8°F), whereas November sees milder conditions with averages reaching 12°C (54°F) during the day and lows of -6°C (22°F). Precipitation levels are fairly similar, with December receiving 76 mm (3.0 in) over 16 days, compared to November's 73 mm (2.9 in) over 14 days. The humidity also remains high in both months, but December is marginally drier at 89% compared to November's 91%. For more details on November weather, you can visit Rauma weather in November.
As December casts its chilly spell over Rauma, the weather stands in stark contrast to the milder months preceding it. With average temperatures hovering around 1°C and dipping to minimums of -14°C, this month ushers in a sharper cold that residents must embrace. The increased precipitation—falling on about half the days—coupled with high humidity levels, creates a damp atmosphere that feels distinctly wintery. December’s atmosphere envelops Rauma in a cozy yet brisk ambiance, ideal for enjoying the festive season. For a deeper dive into the climate patterns throughout the year, explore Rauma Climate.