Last updated: August 21, 2025
April in Turku, Finland heralds the transition from winter to spring, with temperatures fluctuating from a minimum of -12°C (10°F) to a maximum of 21°C (71°F). The average temperature settles around a brisk 4°C (40°F), making it a month of notable variation. Amidst this climatic shift, Turku experiences approximately 34 mm (1.3 in) of precipitation over about 9 days, contributing to a humidity level of 85% that accentuates the freshness in the air. As nature awakens, April provides both challenges and charms for residents and visitors alike, offering a unique glimpse into the evolving Finnish landscape.
In April, Turku, Finland begins to shed the deep chill of winter, offering a refreshing transition into spring. With minimum temperatures ranging from -12°C (10°F) to a pleasantly warm 21°C (71°F), the city experiences an average rise to 4°C (40°F). This marks a significant leap from the frigid conditions of the preceding months, indicating that nature is awakening. As warm days gently prevail, residents can finally trade winter coats for lighter attire, embracing the vibrant scenery painted by blossoming flowers and longer daylight hours. It's a month of hope and rejuvenation, where the brisk air holds a hint of warmth, inviting both locals and visitors alike to enjoy the early signs of spring's arrival.
In Turku, Finland, April marks a notable transition in precipitation patterns as the city begins to shake off the lingering chill of winter. With 34 mm (1.3 in) of rainfall over 9 days, it sees a decrease in precipitation compared to the preceding months, signaling the arrival of drier and milder conditions. This reduction from March’s 45 mm aligns with the typical trend of diminishing rainfall as spring progresses, setting the stage for the increased moisture that May will bring, typically bouncing back to 48 mm. The 9 precipitation days in April keep the city lush and vibrant, while also reflecting a gentle shift toward the sunnier months ahead.
April in Turku, Finland, marks the transition from the winter's persistent humidity to the milder, more temperate conditions of spring. With humidity levels dropping to 85%, April witnesses the most significant decline so far this year, following a trend of gradual decrease from January's 92% and February's 90%. This shift signifies the approach of warmer months, as May further decreases to 77%, ushering in a refreshing change. Despite April's drop, the lingering humidity sets the stage for the fragrant blooms of spring, showcasing how seasonal variations play a crucial role in the city's atmospheric dynamics.
As April arrives in Turku, Finland, the UV Index rises to 4, indicating a moderate exposure level. With a burn time of 30 minutes, it's essential to be mindful of sun protection during outdoor activities. This month marks a notable transition from the earlier months, where January through March recorded lower UV levels, reflecting the gradual increase in daylight and sun intensity as spring unfolds. Looking ahead to May, the UV Index climbs further to 5, suggesting that the sun's rays are becoming even more potent. For more detailed insights on the UV Index throughout the year, explore Turku UV Index.
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As April arrives in Turku, Finland, it brings a remarkable surge in sunshine, with a generous 372 hours of sunlight illuminating the city. This marks a significant leap from the 275 hours recorded in March, heralding the transition into brighter months ahead. The increase in daylight not only enhances the vibrancy of the scenery but also sparks a sense of rejuvenation among residents, eager to embrace the warmth after a long winter. Following April, May continues the upward trend with 458 hours of sunshine, further illustrating the gradual climb toward the peak summer months of June and July, when sunlight reaches an impressive 495 hours and 489 hours, respectively. This steady incline showcases Turku’s evolving landscape basking in the sun, inviting all to enjoy the beauty of the season.
As spring unfolds in Turku, Finland, April marks a notable increase in sunny days, boasting a 52% chance of sunshine. This is a significant leap compared to the 36% in March, signaling a shift towards brighter days as winter fades. While the sun’s presence peaks in June and July, the April sunshine lays the groundwork for the warmer months, inviting a refreshing change after the gloomy winter months. With April's sunny likelihood exceeding that of both May and August, it offers a promising glimpse into the delightful warmth that the spring season has to offer, making it an ideal time to embrace outdoor activities in this vibrant coastal city.
As April arrives in Turku, Finland, the days noticeably lengthen, welcoming an average of 14 hours of daylight. This transition reflects a steady upward trend from the 11 hours of March, signaling a vibrant shift as spring takes hold. With each passing month, sunlight steadily increases, peaking in the summer when the days stretch to an impressive 18 hours in June and July. The progression from the limited daylight in the winter months—just 6 hours in January—highlights the dramatic seasonal changes experienced in this northern locale. As April unfolds, residents and visitors alike can bask in the warming glow of longer days, laying the groundwork for the lively, sun-soaked days of summer ahead.
April in Turku, Finland offers a refreshing change in the atmosphere as the average wind speed rises to 3.6 m/s (8 mph), a slight increase from the steady breezes of March. This mild uptick signals a transition from the harsher winter months, where January and February saw their winds hovering around 3.3 m/s to 3.2 m/s (7 mph), to a more dynamic spring environment. As the landscape begins to bloom, the winds also prepare to shift, demonstrating a general trend where the late spring and early autumn months, like August and September, maintain similar wind speeds, providing a fresh and invigorating backdrop for outdoor activities. With an upcoming dip in June's speed to 2.9 m/s (6 mph), April stands as a delightful reminder of the invigorating winds that herald warmer days ahead.
Weather in Turku varies notably across the year, with each month offering distinct climate conditions. This page compares April’s weather to other months in Turku, focusing on differences in temperature, rainfall, humidity, and UV levels.
April and January present a stark contrast in weather conditions. In April, temperatures range from a minimum of -12°C (10°F) to a maximum of 21°C (71°F), with an average of 4°C (40°F). The month sees a modest precipitation of 34 mm (1.3 in) spread over 9 days, accompanied by a humidity level of 85%. In contrast, January is much colder, with temperatures plummeting to a minimum of -25°C (-13°F) and only reaching a maximum of 8°C (47°F), averaging -2°C (28°F). This month experiences greater precipitation at 48 mm (1.9 in) over the same number of days, along with slightly higher humidity levels at 92%. For a more detailed overview, you can check Turku weather in January.
April generally offers a milder climate compared to February, with minimum temperatures rising from an average of -24°C (-11°F) in February to -12°C (10°F) in April. The average temperature in April is a comfortable 4°C (40°F), while February remains quite chilly at -3°C (26°F). Though precipitation levels are slightly lower in April at 34 mm (1.3 in) compared to February's 42 mm (1.7 in), both months experience similar amounts of rainy days, with April seeing precipitation on 9 days and February on 8 days. Additionally, humidity remains high in both months, peaking at 90% in February and averaging 85% in April. For more details on February weather, visit Turku weather in February.
In comparing the weather between March and April, it is clear that April brings a notable increase in temperatures, with an average of 4°C (40°F) compared to March's average of 0°C (31°F). The maximum temperature in April can reach as high as 21°C (71°F), whereas March peaks at only 13°C (55°F). While April experiences slightly lower precipitation at 34 mm (1.3 in) over 9 days, March has a higher total precipitation of 45 mm (1.8 in) spread over 10 days. Additionally, humidity levels are marginally lower in April at 85% compared to March's 89%. For more details, you can check Turku weather in March.
April and May exhibit notable differences in weather patterns. In April, temperatures range from a chilly -12°C (10°F) at night to a mild 21°C (71°F) during the day, with an average of 4°C (40°F). Despite experiencing 34 mm (1.3 in) of precipitation over about nine days, the humidity remains high at 85%. In contrast, May brings warmer temperatures, with a minimum of -5°C (24°F) and a peak of 28°C (83°F), resulting in an average of 10°C (50°F). While May sees a slight increase in precipitation to 48 mm (1.9 in) over ten days, the humidity drops to a more comfortable 77%. For more details, check out Turku weather in May.
In April, temperatures in Turku range from a chilly minimum of -12°C (10°F) to a pleasant maximum of 21°C (71°F), with an average of 4°C (40°F). The month experiences moderate precipitation of 34 mm (1.3 in) over approximately 9 days and high humidity at 85%. In contrast, June features significantly warmer weather with temperatures ranging from a minimum of 2°C (36°F) to a maximum of 30°C (86°F), averaging 16°C (61°F). Although June has slightly more precipitation at 45 mm (1.8 in) over just 7 days, the humidity decreases to 78%. This transition from April to June marks a notable shift towards warmer and more stable weather. For more specific weather insights, check out Turku weather in June.
April and July present contrasting weather patterns, showcasing the transition from early spring to the height of summer. In April, temperatures range from a chilly -12°C (10°F) to a milder maximum of 21°C (71°F), with an average of around 4°C (40°F). The month experiences about 34 mm (1.3 in) of precipitation over approximately 9 days, accompanied by high humidity levels of 85%.
In contrast, July boasts significantly warmer temperatures, with a minimum of 5°C (40°F), an average of 18°C (64°F), and maximum highs reaching 33°C (91°F). This month sees an increase in precipitation to 85 mm (3.4 in) over about 11 days, while humidity drops slightly to 78%. For a more detailed look at July weather in Turku, check out Turku weather in July.
April and August present contrasting weather patterns. In April, temperatures fluctuate between a chilly minimum of -12°C (10°F) to a mild maximum of 21°C (71°F), with an average of around 4°C (40°F). The month sees moderate precipitation of 34 mm (1.3 in) over approximately 9 days, accompanied by high humidity levels at 85%. In contrast, August enjoys warmer conditions, with temperatures ranging from a comfortable minimum of 4°C (40°F) to a maximum of 29°C (84°F) and an average of 16°C (62°F). This month experiences higher overall precipitation at 95 mm (3.7 in), occurring over 13 days, while humidity drops slightly to 79%. For more detailed insights on August weather, check out Turku weather in August.
April and September in Turku showcase notable differences in weather. April typically experiences cooler temperatures, ranging from a minimum of -12°C (10°F) to an average of 4°C (40°F) and peaking at 21°C (71°F). In contrast, September enjoys milder conditions, with temperatures fluctuating between a minimum of -3°C (28°F) and an average of 12°C (54°F), reaching a maximum of 23°C (74°F). While April sees a lower total precipitation of 34 mm (1.3 in) over 9 days, September has a higher rainfall of 69 mm (2.7 in) across 12 days, leading to slightly elevated humidity levels in both months (85% in April and 86% in September). For more detailed insights, check out Turku weather in September.
April and October present contrasting climates, showcasing the transition from spring to autumn. In April, temperatures range from a chilly -12°C (10°F) at their lowest to a pleasant 21°C (71°F) at their highest, with an average of 4°C (40°F). The month typically sees 34 mm (1.3 in) of precipitation over 9 days and a humidity level of 85%, creating a crisp, fresh atmosphere. In contrast, October features milder temperatures, with a minimum of -6°C (21°F) and a maximum of 17°C (63°F), averaging 7°C (45°F). Rainfall increases notably to 78 mm (3.1 in) spread over 15 days, alongside a slightly higher humidity of 90%. This results in a damp, cool environment, ideal for experiencing the rich colors of autumn. For more about the specific weather in October, you can check Turku weather in October.
April and November present distinct weather patterns, reflecting the transition between winter and winter's approach. In April, temperatures range from a minimum of -12°C (10°F) to a comfortable maximum of 21°C (71°F), with an average of 4°C (40°F). The month experiences a moderate precipitation level of 34 mm (1.3 in) over approximately 9 days, accompanied by a humidity of 85%.
In contrast, November generally sees cooler temperatures, with a minimum of -9°C (15°F) and a maximum of only 13°C (56°F), and an overall average of 3°C (38°F). This month tends to be wetter, accumulating about 54 mm (2.1 in) of precipitation across 10 days, and the humidity rises slightly to 91%. For a detailed look at November's weather, you can visit Turku weather in November.
April and December exhibit significant differences in weather patterns. In April, temperatures range from a minimum of -12°C (10°F) to a maximum of 21°C (71°F), averaging around 4°C (40°F). The month sees about 34 mm (1.3 in) of precipitation over 9 days, with humidity around 85%. In contrast, December is notably colder, with temperatures ranging from -21°C (-5°F) to a maximum of 7°C (45°F) and an average of 0°C (31°F). Rainfall increases to 74 mm (2.9 in) over 14 days, and humidity rises slightly to 89%. For more detailed information, you can refer to Turku weather in December.
As April rolls into Turku, the transition from winter to spring becomes palpable, showcasing a remarkable diversity in weather. While daytime temperatures might occasionally soar up to a pleasant 21°C, cooler nights remind us that winter is not quite over, with lows dipping down to -12°C. This month typically experiences about 34 mm of precipitation across 9 days, contributing to a rather humid atmosphere with an average humidity of 85%. Compared to the chill of earlier months, April serves as a refreshing reminder of the warmer days ahead, making it a fascinating time to experience Turku's evolving landscape. For more insights on the city’s climate throughout the year, check out Turku Climate.