Last updated: August 21, 2025
In Hamina, Finland, December ushers in a chilly embrace, with average temperatures lingering around -1°C (30°F). While the maximum can soar to a mild 6°C (44°F), the mercury often dips to a biting minimum of -18°C (0°F). This month is marked by its high humidity of 96%, creating a crisp, brisk atmosphere. Rain and snow combine with a total precipitation of 82 mm (3.2 in), contributing to 16 days of wet weather that transform the landscape into a stunning winter wonderland.
In December, Hamina, Finland experiences a chilling transition into winter, with temperatures often dipping between -18°C (0°F) and 6°C (44°F). The month is characterized by a biting cold, as the average temperature hovers around -1°C (30°F), marking a distinct drop from the milder autumn months. As daylight wanes, the crisp air signals the onset of deeper winter, making it the coldest month of the year so far. This chill sets the stage for the picturesque snowy landscapes that define the Finnish winter, while also hinting at the even colder months of January and February ahead.
In Hamina, Finland, December brings a notable increase in precipitation, with 82 mm (3.2 in) of rain falling over 16 days. This trend reflects a shift towards wetter winter months, following the pattern established in October and November. As the year closes, the precipitation levels in December are on par with those in the late autumn, underscoring the region’s shift into a more humid climate. With more days of rain, residents experience a rather soggy end to the year, highlighting the consistent moisture that characterizes Hamina's winters. Overall, December reinforces the notion that the onset of winter does not equate to a lack of rainfall, but rather, it is a continuation of the wetter season.
In December, Hamina, Finland experiences a notably high humidity level of 96%, marking it as one of the dampest months of the year. This winter month follows a trend of elevated moisture levels that have persisted since the onset of the cold season. After the crisp autumn months of September and October, where humidity was recorded at 90% and 94% respectively, December's figures remain consistent with November’s humidity. Notably, these later months contrast sharply with the drier summer period, where June and July saw much lower humidity levels of 74% and 80%. This gradual increase in humidity as winter sets in not only creates a unique atmospheric quality but also highlights the region's transition from the milder months to the chill of winter, underpinning the characteristic climate that defines Hamina.
In December, Hamina, Finland experiences a low UV Index of 1, making sun exposure quite safe and requiring only minimal precautions. This trend of low UV levels extends from November into the new year, providing a sense of relief during the chilly winter months. In fact, the UV Index remains consistently low from January to February, with a burn time of 45 minutes before the skin risks damage. The gradual increase in UV levels starts in March, ultimately peaking during the summer months of June and July, when the index hits 7. For those looking to plan outdoor activities or simply wishing to stay informed, detailed UV information can be found at Hamina UV Index.
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In Hamina, Finland, December brings a stark contrast to the vibrant sunlight of the preceding months, with only 44 hours of sunshine gracing the city. This decline is part of a broader annual trend, where the days gradually grow darker from the longest hours of sunlight experienced in July and June, peaking at nearly 490 hours. As winter sets in, the shift from the vivid brightness of summer to the subdued light of winter is palpable. In fact, after basking in 365 hours in April, the sunlight dwindles through the months, with November offering just 107 hours before December offers its brief moments of radiance, highlighting the seasonal ebb and flow that characterizes life in this picturesque part of Finland.
As winter deepens in Hamina, Finland, the likelihood of encountering sunny weather in December stands at a mere 9%. This trend marks the lowest probability of sunshine throughout the year, following a gradual decline from January's 4% to November's 15%. Weather patterns shift dramatically in the spring, taking a brighter turn as March experiences a significant increase to 37%, ultimately reaching a peak in the summer months. With December's short days and often overcast skies, residents and visitors can expect predominantly gray weather, making those rare sunny moments even more cherished during this cold, wintry month.
In Hamina, Finland, the December daylight duration drops to a modest 5 hours, marking the depth of winter and showcasing a significant decline from the 18 hours experienced in the summer months of June and July. This seasonal shift reveals a clear trend: as the year progresses, daylight hours gradually increase from the dark depths of December to the long, luminous days of midsummer in June. However, as the calendar turns towards autumn, daylight begins its descent once more, with November offering only 7 hours. In stark contrast, March heralds longer days with 11 hours, a noticeable shift that signals the return of light, ultimately leading into the bright rejuvenation of spring and summer. Such fluctuations in daylight not only define the rhythm of life in Hamina but also shape the local culture and daily activities throughout the year.
In Hamina, Finland, December brings a refreshing average wind speed of 4.6 m/s (10 mph), marking a notable uptick from the calmer summer months. As the year draws to a close, the wind patterns reveal a distinct trend: starting from October’s breezy 5.6 m/s (13 mph), there is a gentle decrease in wind speeds through November and into December. This transition showcases the onset of winter, as the winds shift from the vibrant gusts of autumn to a steadier, cooler flow, hinting at the frosty changes ahead. The winds, while brisk, provide a crispness that enlivens the long nights, making December a uniquely invigorating month in Hamina.
Weather in Hamina varies notably across the year, with each month offering distinct climate conditions. This page compares December’s weather to other months in Hamina, focusing on differences in temperature, rainfall, humidity, and UV levels.
December and January present a stark contrast in weather conditions. In December, temperatures range from a minimum of -18°C (0°F) to a maximum of 6°C (44°F), with an average of -1°C (30°F). The month experiences 82 mm (3.2 in) of precipitation over 16 days, alongside high humidity levels at 96%. In comparison, January sees even colder temperatures, with a minimum of -24°C (-10°F), an average of -3°C (27°F), and a maximum of 7°C (46°F). Precipitation decreases to 55 mm (2.2 in) over 12 days, and humidity rises slightly to 98%. For a detailed look at January weather in Hamina, you can visit Hamina weather in January.
In December, temperatures range from a chilly -18°C (0°F) to a mild 6°C (44°F), with an average of -1°C (30°F). The month sees a substantial amount of precipitation, totaling 82 mm (3.2 in) over 16 days, while humidity remains high at 96%. In contrast, February experiences even colder conditions, with temperatures dipping as low as -28°C (-18°F) and peaking at 7°C (44°F) for an average of -4°C (25°F). Precipitation is lower in February, with 56 mm (2.2 in) over 11 days, but the humidity remains consistent at 96%. For more detailed information, check out Hamina weather in February.
December and March present distinct weather characteristics, despite sharing similar average temperatures. In December, temperatures range from a chilling -18°C (0°F) to a mild max of 6°C (44°F), with high humidity at 96% contributing to a damp atmosphere. The month experiences significant precipitation over 16 days, totaling 82 mm (3.2 in). Conversely, March sees slightly colder minimum temperatures at -22°C (-7°F), but the maximum can reach up to 9°C (48°F). This month also has less precipitation, accumulating only 50 mm (2.0 in) over 11 days and slightly lower humidity at 93%. For a closer look at weather patterns in March, check out Hamina weather in March.
December weather is characterized by significantly colder temperatures, with average highs barely reaching 6°C (44°F) and lows plunging to -18°C (0°F), making it a frigid month. The precipitation levels are higher at 82 mm (3.2 in) over 16 days, and humidity sits at a high 96%, creating a damp and chilly atmosphere. In contrast, April experiences a milder climate, with temperatures ranging from a low of -12°C (10°F) to an average high of 19°C (67°F). Precipitation decreases to 43 mm (1.7 in) over 10 days, and humidity drops to 87%, marking a transition toward warmer spring weather. For more detailed insights on April's conditions, you can visit Hamina weather in April.
December and May present a stark contrast in weather conditions. In December, temperatures can plunge as low as -18°C (0°F), with an average of -1°C (30°F) and a maximum of 6°C (44°F). The month is marked by high humidity at 96% and frequent precipitation, occurring on 16 days, totaling 82 mm (3.2 in). In comparison, May enjoys a much milder climate, with temperatures ranging from a minimum of -3°C (27°F) to a pleasant average of 10°C (50°F), peaking at 26°C (79°F). Precipitation in May is significantly lower, averaging 49 mm (1.9 in) over just 9 days, and the humidity drops to a more comfortable 75%. For a closer look at the specific weather conditions in Hamina during this month, visit Hamina weather in May.
December and June showcase a dramatic contrast in weather conditions. In December, temperatures can plunge to a minimum of -18°C (0°F) with an average of -1°C (30°F), rarely exceeding 6°C (44°F). The month also experiences significant precipitation, totaling 82 mm (3.2 in) over 16 days, accompanied by high humidity levels of 96%. In stark contrast, June brings a much warmer climate with minimum temperatures around 2°C (35°F) and averages reaching 16°C (61°F), peaking at 30°C (87°F). Precipitation is notably less at 48 mm (1.9 in) over just 10 days, and humidity decreases to a more comfortable 74%. For more details, you can visit Hamina weather in June.
In December, the weather can be quite harsh, with temperatures ranging from a chilling -18°C (0°F) at night to a maximum of 6°C (44°F) during the day. It's a notably wet month, with 82 mm (3.2 in) of precipitation spread over 16 days and high humidity levels reaching 96%. In stark contrast, July offers a much milder climate, with temperatures ranging from a comfortable 8°C (46°F) at night to a warm 31°C (88°F) during the day. The precipitation remains the same at 82 mm (3.2 in), but it falls over just 11 days and the humidity is lower at 80%. For more details, you can check out Hamina weather in July.
December and August present strikingly different weather conditions. In December, temperatures can plunge to a minimum of -18°C (0°F), with an average around -1°C (30°F) and a maximum of just 6°C (44°F). The month experiences significant humidity at 96% and receives about 82 mm (3.2 in) of precipitation over 16 days. In contrast, August brings much milder temperatures, with a minimum of 7°C (45°F), an average of 17°C (62°F), and a maximum reaching 30°C (87°F). While it does have slightly more precipitation at 90 mm (3.5 in), it falls over fewer days (13), and humidity levels average 85%. For more detailed insights, visit Hamina weather in August.
December and September showcase contrasting weather conditions. In December, temperatures plunge to a minimum of -18°C (0°F), with an average of -1°C (30°F) and a maximum of 6°C (44°F). The month also experiences high levels of precipitation, averaging 82 mm (3.2 in) over 16 days, along with humidity reaching a remarkable 96%. In contrast, September offers a milder climate, with temperatures ranging from a minimum of 0°C (32°F) to an average of 12°C (54°F) and a maximum of 22°C (73°F). Precipitation is slightly lower at 67 mm (2.6 in) spread over 12 days, and humidity stands at 90%. For more detailed insights, visit Hamina weather in September.
In October, the weather is significantly milder compared to December, with average temperatures ranging from a minimum of -4°C (26°F) to a maximum of 16°C (62°F). In contrast, December sees much colder temperatures, with an average low of -18°C (0°F) and a maximum of just 6°C (44°F). Both months experience similar levels of precipitation, with October receiving 84 mm (3.3 in) over 16 days and December slightly less at 82 mm (3.2 in) over the same number of days. Humidity levels are also high in both months, with December at 96% and October at 94%. For more detailed information on October weather, you can check out Hamina weather in October.
December experiences significantly colder temperatures compared to November, with average lows dipping to -1°C (30°F) and maximums only reaching 6°C (44°F). In contrast, November sees a milder range with temperatures ranging from a minimum of -8°C (18°F) to a maximum of 12°C (54°F). Precipitation increases slightly in December, with 82 mm (3.2 in) over 16 days, compared to November's 65 mm (2.6 in) over 14 days. Additionally, humidity remains high, especially in December at 96%, though November is not far behind at 94%. For a closer look at November weather, check out Hamina weather in November.
As December sets in, Hamina transforms into a winter wonderland, distinctly colder than the preceding months. With an average temperature hovering around -1°C, residents and visitors alike experience a more biting chill, contrasting sharply with the relatively milder fall. Accompanied by considerable precipitation, often falling as snow, December marks a significant increase in humidity levels, creating a crisp, frosty atmosphere that envelops the town. The month is characterized by shorter days and a dramatic shift in landscape, as Hamina embraces the beauty and challenges of winter. To learn more about the climate throughout the year, visit Hamina Climate.