Last updated: August 21, 2025
January in Turku, Finland presents a striking winter landscape defined by a varied temperature range, with maximums reaching 8°C (47°F) and minimums plunging to -25°C (-13°F). The month averages a chilly -2°C (28°F), making it essential to bundle up when exploring the city's picturesque surroundings. While the 48 mm (1.9 in) of precipitation over 9 days brings a serene layer of snow, the high humidity at 92% adds a crispness to the air that is quintessentially winter. Visitors can expect a blend of frosty beauty and occasional flurries, creating an enchanting atmosphere perfect for both indoor coziness and outdoor adventures.
In January, Turku, Finland, experiences a deep freeze, with temperatures ranging from a biting -25°C (-13°F) at night to a relatively mild daytime average of -2°C (28°F). As the month progresses, the city inches out of the harsh grips of winter toward slightly warmer patterns seen in February and March, where both months hover around an average of -3°C (26°F) and 0°C (31°F), respectively. While the coldest nights can dip down to similar lows of -24°C (-11°F) and -25°C (-12°F), the occasional daytime high of 8°C (47°F) in January hints at the gradual transition to spring. This trend of warming continues into April, with temperatures finally surpassing the freezing point, offering a promising glimpse of the forthcoming mildness.
In January, Turku experiences an average precipitation of 48 mm (1.9 in) over 9 days, marking the month as one of the wetter times of the winter season. This level of rainfall sets the scene for a brisk yet invigorating start to the year. Notably, the precipitation is consistent, often paving the way for a landscape dusted in snow as temperatures dip. As winter progresses into February with slightly reduced precipitation at 42 mm (1.7 in) over 8 days, the weather remains dynamic. The trend continues into March, wherein the foundational moisture persists at 45 mm (1.8 in) across 10 days, indicating a resilient pattern that supports the region's transition from the chill of winter toward the budding signs of spring. Overall, December through February ushers in a unique water cycle, reflecting both the chill of winter and a prelude to the awakening of nature in the months to follow.
In January, Turku, Finland, experiences its peak humidity at a notable 92%, setting the tone for a winter characterized by dampness and chill. As the season progresses into February and March, the humidity slightly eases to 90% and 89%, respectively, hinting at a gradual shift as spring approaches. However, this moisture remains consistently high until April, when it dips to 85%. As the summer months roll in, humidity levels stabilize around the 77%-79% mark from May to August, providing a brief respite from the winter's grasp. Interestingly, as autumn kicks off, humidity levels return to an upward trend, peaking again in November at 91%. This cyclical pattern underscores Turku's distinctive climate—ensuring the air remains rich in moisture throughout the year, with notable spikes during the colder months.
In January, Turku, Finland experiences a low UV Index of 1, indicating minimal risk of harm from unprotected sun exposure, with a burn time of approximately 45 minutes. This patterns continues through the winter months, with February also presenting a similar UV Index of 2. As spring approaches, the UV Index climbs to 3 in March and 4 in April, marking the transition to a moderate exposure category where burn time shortens to 30 minutes. By May, the index reaches 5, highlighting a steady increase in solar intensity as the days grow longer. This trend peaks in the summer months of June and July, where a high UV Index of 7 ushers in a more pronounced need for sun protection, reducing burn time to just 25 minutes. As summer fades into autumn, UV levels gradually decline, returning to low categories by November, where they remain through the end of the year. For a comprehensive look at UV trends across the seasons, check out Turku UV Index.
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In Turku, Finland, January greets the year with a modest 62 hours of sunshine, setting the stage for a gradual increase in daylight as winter wanes. February brings a noteworthy surge to 158 hours, hinting at the anticipation of spring. By March, the sun shines for 275 hours, providing a much-needed boost to spirits as days lengthen. The trend continues upward into April with 372 hours, and by May, the sun fully embraces the city, showering it with 458 hours. The heights are reached in June, where 495 hours of sunshine illuminate the days, making it the sunniest month of the year. Although July does not trail far behind, with 489 hours, the summer warmth gives way to gradual decline in August, which records 422 hours. As autumn unfolds, sunlight decreases steadily, dropping to 209 hours in October and plummeting to 67 hours by December. This cyclical dance of sunlight holds a unique charm, inviting residents and visitors alike to witness the changing seasons in Turku.
In Turku, Finland, January greets residents and visitors with a mere 10% chance of sunny weather, making it one of the cloudiest months of the year. As winter drags on, the likelihood of sun slowly improves, with February rising to 27% and March reaching 36%. This upward trend continues into the spring, where April sees a significant leap to 52%. The sunnier days become even more frequent as summer approaches, with July and June boasting over 55% sunshine. As the year progresses, Turku transitions from the depths of winter gloom into a season of light and warmth, inviting everyone to revel in the brightness.
In Turku, Finland, the dawn of January brings only about 6 hours of daylight, a stark contrast to the lengthier days that follow. As winter gives way to spring, daylight duration progressively increases, climbing to 9 hours in February and reaching 11 hours by March. This gradual ascent continues into the warmer months, peaking at an impressive 18 hours from June through July. As summer transitions to autumn, there’s a gentle tapering off; daylight dips to 15 hours in August and further down to 12 hours in September. By the time October arrives, the sun lingers for just 10 hours, and the cycle starts anew with 7 hours in November and a mere 5 hours in December. This rhythmic ebb and flow of daylight showcases Turku's distinct seasonal contrasts, marking the annual dance between light and darkness.
In January, the winds in Turku, Finland, typically reach an average speed of 3.3 m/s (7 mph), creating a crisp and invigorating atmosphere ideal for winter activities. This breeze is slightly stronger than in February, which registers 3.2 m/s but remains relatively gentle compared to the spring months. As winter gives way to spring, March experiences a notable uptick, with the wind speed increasing to 4.0 m/s (9 mph), signaling a shift towards more dynamic weather patterns. The wind remains variable through the subsequent months, peaking in October at 4.5 m/s (10 mph), before calming down again as the year winds down. Overall, the data reveals a gentle yet noticeable rhythm of wind speeds that accompany the changing seasons in this picturesque Finnish city.
Weather in Turku varies notably across the year, with each month offering distinct climate conditions. This page compares January’s weather to other months in Turku, focusing on differences in temperature, rainfall, humidity, and UV levels.
January and February share similar cold conditions, yet subtle differences distinguish the two months. January experiences a slight variation in temperature, with an average of -2°C (28°F) compared to February’s -3°C (26°F). The minimum temperatures are nearly identical, reaching -25°C (-13°F) in January and -24°C (-11°F) in February. In terms of precipitation, January slightly edges out February with 48 mm (1.9 in) across 9 days, while February records 42 mm (1.7 in) over 8 days. Humidity remains high in both months, but January has 92% compared to February's 90%. For more detailed insights, you can check Turku weather in February.
In January, temperatures can plunge as low as -25°C (-13°F), with an average of -2°C (28°F) and a maximum reaching 8°C (47°F). The month experiences around 48 mm (1.9 in) of precipitation over approximately 9 days, accompanied by a high humidity level of 92%. In contrast, March sees a slight increase in temperature, with a similar minimum of -25°C (-12°F) but an average temperature rising to 0°C (31°F) and a maximum of 13°C (55°F). Precipitation is comparable at 45 mm (1.8 in) across about 10 days, and humidity decreases slightly to 89%. For more details on the weather trends, you can visit Turku weather in March.
In January, the weather is characterized by frigid temperatures, with lows plummeting to -25°C (-13°F) and an average of -2°C (28°F), making it one of the coldest months of the year. Precipitation occurs over nine days, totaling 48 mm (1.9 in), and the high humidity of 92% contributes to a biting chill.
In contrast, April brings a noticeable shift in conditions, with temperatures rising significantly, featuring a minimum of -12°C (10°F) and an average of 4°C (40°F), which can feel quite mild compared to January. Although precipitation also falls on nine days, it’s less at 34 mm (1.3 in), and humidity decreases to a more comfortable 85%. This transition highlights the arrival of spring, as temperatures can reach up to 21°C (71°F) by the end of the month. For more details, visit Turku weather in April.
In January, the weather is characterized by frigid temperatures, with lows plummeting to -25°C (-13°F) and an average temperature of -2°C (28°F), making it one of the coldest months of the year. In contrast, May brings a significant warming trend, with temperatures ranging from a minimum of -5°C (24°F) to a comfortable maximum of 28°C (83°F) and an average of 10°C (50°F). While both months experience similar precipitation levels of 48 mm (1.9 in), January has higher humidity at 92%, compared to the more temperate 77% in May. For more details about the weather in May, you can visit Turku weather in May.
In January, the weather is characterized by frigid temperatures, with lows plunging to a chilling -25°C (-13°F) and an average hovering around -2°C (28°F). Despite receiving 48 mm (1.9 in) of precipitation over 9 days, the high humidity at 92% can make the cold feel even more biting. In contrast, June brings a significant warm-up, with temperatures ranging from a mild minimum of 2°C (36°F) to a pleasant maximum of 30°C (86°F) and an average of 16°C (61°F). Though precipitation slightly decreases to 45 mm (1.8 in) over just 7 days, the humidity drops to a more comfortable 78%. For more details on the June weather, you can visit Turku weather in June.
January and July present stark contrasts in weather, particularly in temperature and humidity. In January, temperatures can plummet to a minimum of -25°C (-13°F), with an average of -2°C (28°F) and a maximum of 8°C (47°F). The month is characterized by high humidity at 92% and experiences some precipitation over 9 days, totaling 48 mm (1.9 in). In contrast, July boasts much milder conditions, with a minimum temperature of 5°C (40°F) and a maximum reaching up to 33°C (91°F), averaging around 18°C (64°F). The humidity is lower at 78%, and although July sees more precipitation over 11 days (85 mm or 3.4 in), the overall climate feels vibrant and warm. For more specific details about July weather, you can visit Turku weather in July.
The weather in January is characterized by frigid temperatures, with a minimum of -25°C (-13°F) and an average of -2°C (28°F), while August brings a significant warming trend with temperatures ranging from a minimum of 4°C (40°F) to a maximum of 29°C (84°F). January sees approximately 48 mm (1.9 in) of precipitation over 9 days, whereas August experiences nearly double that amount, with 95 mm (3.7 in) of rain spread across 13 days. Additionally, humidity levels in January are notably high at 92%, compared to a more moderate 79% in August. For more details on the weather during this summer month, you can check Turku weather in August.
In January, the weather is harsh, with temperatures ranging from a chilling minimum of -25°C (-13°F) to a maximum of 8°C (47°F), and an average of -2°C (28°F). The month sees about 48 mm (1.9 in) of precipitation over 9 days, accompanied by high humidity levels of 92%. In contrast, September brings a more temperate climate, with temperatures varying from a minimum of -3°C (28°F) to a pleasant maximum of 23°C (74°F) and an average of 12°C (54°F). Although September experiences slightly higher precipitation at 69 mm (2.7 in) over 12 days, the humidity remains lower at 86%. For more detailed information on the weather in September, you can check Turku weather in September.
January and October present very different weather patterns in terms of temperature and precipitation. In January, temperatures can plummet to as low as -25°C (-13°F), with an average of -2°C (28°F) and a maximum reaching only 8°C (47°F). The month sees 48 mm (1.9 in) of precipitation over about 9 days, coupled with high humidity levels at 92%. In contrast, October experiences milder conditions, with minimum temperatures around -6°C (21°F) and average highs of 17°C (63°F), resulting in an average temperature of 7°C (45°F). This month is also wetter, with 78 mm (3.1 in) of precipitation spread over 15 days, maintaining humidity levels at 90%. For more details on October's climate, visit Turku weather in October.
Comparing the weather in January and November reveals notable differences in temperature and overall conditions. In January, temperatures can plummet to a minimum of -25°C (-13°F), with an average of -2°C (28°F) and a maximum of 8°C (47°F), making it considerably colder than November. November, on the other hand, experiences milder temperatures, with a minimum of -9°C (15°F), an average of 3°C (38°F), and a maximum of 13°C (56°F). While both months see similar levels of precipitation, with January recording 48 mm (1.9 in) over 9 days and November averaging 54 mm (2.1 in) over 10 days, November’s humidity remains slightly lower at 91%. For a more detailed look, you can explore Turku weather in November.
January and December exhibit notable differences in weather patterns, despite being consecutive months in winter. January experiences a slightly lower temperature range, with minimums reaching -25°C (-13°F) compared to December's minimum of -21°C (-5°F). The average temperature in January is -2°C (28°F), which is a drop from December's average of 0°C (31°F). Additionally, January has less precipitation at 48 mm (1.9 in) over 9 days, while December sees a higher total of 74 mm (2.9 in) spread across 14 days. Humidity is relatively high in both months, with January at 92% and December at 89%. For further details, you can check out Turku weather in December.
January in Turku is a month of stark contrasts, marked by its chilly temperatures and high humidity that set it apart from the milder months of the year. With maximum highs reaching only 8°C and average lows plunging to -2°C, this month is characterized by its brisk and often biting cold. In addition, January sees more precipitation days compared to many other months, contributing to the winter landscape's icy allure. The air is heavy with 92% humidity, making it feel even colder. Despite the chill, January offers a unique beauty to Turku, with the crisp winter air and serene snowfall inviting residents and visitors alike to embrace the season's magic. For a deeper understanding of the climate throughout the year, be sure to explore Turku Climate.