Last updated: August 21, 2025
April in Hanko, Finland offers a blend of crisp, invigorating weather, ideal for those who enjoy the shift towards spring. With a maximum temperature reaching a brisk 9°C (49°F) and an average of 3°C (38°F), the days gradually become milder. However, the nights can still dip to a chilly -2°C (29°F). This month sees 28 mm (1.1 in) of precipitation over approximately 7 days, contributing to the refreshing humidity level of 87%. Those visiting during this period will experience Hanko's unique early spring charm, complete with occasional rainfall and cool breezes.
As temperatures begin to rise in Hanko, Finland during April, the transition from winter to spring is unmistakable. The month greets residents with a minimum temperature of -2°C (29°F), while the average climbs to 3°C (38°F), peaking at a pleasant 9°C (49°F). This shift marks a significant improvement compared to the preceding months of January through March, where sub-zero temperatures were the norm. The thawing of the landscape and the arrival of milder weather signal not just a change in degree but also a brightening outlook as Hanko shakes off the cold remnants of winter and welcomes the invigorating essence of spring. With each passing day, the lingering chill fades, making way for blooming nature and a renewed vibrancy in the coastal town.
In April, Hanko, Finland, experiences a notable decrease in precipitation, receiving just 28 mm (1.1 in) of rain over only 7 days. This contrasts sharply with the heavier rainfall in preceding months, with January delivering 56 mm and March 50 mm. As spring begins to unfold, April not only marks the transition to drier weather but also features a significant drop in the number of wet days compared to winter. This trend sets the stage for the upcoming months, as May and June bring slightly higher precipitation levels, indicating a gradual buildup towards the summer peak. The overall pattern highlights a clear seasonal shift, with April serving as a gentle bridge between the crisp, wet winter and the lush, vibrant summer ahead.
In April, humidity levels in Hanko, Finland begin to show a subtle yet significant decline, settling at 87%. This drop from the 90%+ range experienced during the winter months suggests a slow transition towards drier conditions as spring unfolds. While still relatively humid, April serves as a bridge to the milder, more comfortable days of May, where humidity plummets to 76%. This shift not only heralds the arrival of warmer weather but also indicates that Hanko experiences one of its most drastic drops in humidity before summer reintroduces moderate levels. The overall trend illustrates a gradual easing of humidity through the spring, paving the way for the drier months ahead.
As spring unfolds in Hanko, Finland, the UV Index steadily increases, reflecting the shift in sun exposure and its potential effects on skin. In April, the UV Index reaches 4, categorizing it as moderate, which means it's time to be mindful of sun protection, especially during peak hours. This marks an upward trend from March's index of 3, showing that sunlight is becoming more intense as the days grow longer. With a burn time of just 30 minutes, it’s crucial to apply sunscreen or seek shade to protect your skin from UV rays. As May approaches, expect this moderate exposure to rise further, emphasizing the importance of staying vigilant in your sun safety routine. For more details on UV levels throughout the year, you can visit Hanko UV Index.
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April in Hanko, Finland, is a delightful transition into the warmer months, boasting 377 hours of sunshine. This sunny trend follows a gradual increase from the 66 hours in January, almost mirroring the rebirth of nature as winter retreats. By March, the daylight had more than doubled, reaching 276 hours and igniting a sense of anticipation for the spring. Following this promising momentum, April shines particularly brightly, serving as a reminder of the longer days ahead that June and July capitalize on, with their peak hours of 490 and 487 hours, respectively. As winter's grip loosens, the steady climb in daylight hours through these spring months sets a vibrant tone for the vibrant summer days that follow.
As spring unfolds in Hanko, Finland, the likelihood of sunny weather takes a noticeable leap in April, with a 50% chance of sun illuminating the days. This boost follows a gradual increase from the winter months, where January began with a mere 5% and March ramped up to 37%. The transition into April marks a turning point, suggesting that the city is shaking off the remnants of winter. While the sunny days of summer begin to beckon—with July peaking at 61%—April stands out as a month of promise, capturing the essence of renewed hope and brighter days ahead.
As April unfolds in Hanko, Finland, the lengthening days bring a refreshing vibrancy to the landscape, with daylight extending to an impressive 14 hours. This upward trend is a delightful contrast to the mere 6 hours of sunlight experienced in January. Following the gradual increase from 9 hours in February and 11 hours in March, April signals the time when winter's grasp begins to loosen, allowing for more outdoor exploration and enjoyment. The transition to longer days continues into May and June, peaking at 18 hours in the summer, yet it’s in April that the allure of spring truly blossoms, inviting residents and visitors alike to revel in the extended sunlight and milder temperatures.
As winter gives way to spring in Hanko, April showcases a gentle shift in the winds, with an average speed of 7.2 m/s (16 mph). This marks a slight decrease from the brisk March winds, which peaked at 7.8 m/s (18 mph), reflecting a gradual easing of the chill as warmer months approach. Interestingly, as the year progresses, wind speeds exhibit a noticeable trend; descending through late spring and reaching their annual low in June at 4.8 m/s (11 mph), only to rise again in the autumn months. This interplay of breezes not only captures the change in seasons but also sets the stage for a vibrant outdoor experience as Hanko transitions into milder weather.
Weather in Hanko varies notably across the year, with each month offering distinct climate conditions. This page compares April’s weather to other months in Hanko, focusing on differences in temperature, rainfall, humidity, and UV levels.
In comparison to January, April experiences milder temperatures, with averages rising from January's chilly 1°C (33°F) to a more pleasant 3°C (38°F). While both months have their share of precipitation, April sees significantly less with 28 mm (1.1 in) across 7 days, compared to January's 56 mm (2.2 in) over 14 days. Additionally, humidity levels remain high in both months, but January is slightly more humid at 92% compared to April’s 87%. For more details on January's weather patterns, you can check out Hanko weather in January.
April's weather shows a noticeable warming trend compared to February. With average temperatures rising to 3°C (38°F) from February's average of -1°C (31°F), April experiences milder conditions, including a maximum of 9°C (49°F) versus February's high of only 6°C (43°F). While April has less precipitation at 28 mm (1.1 in) over 7 days, February sees more rainfall at 49 mm (1.9 in) spread over 11 days. Despite both months having high humidity levels, April’s average of 87% is slightly lower than February's 91%. For more detailed insights, visit Hanko weather in February.
April weather generally sees a slight improvement compared to March, with average temperatures rising from 0°C (33°F) in March to 3°C (38°F) in April. The maximum temperatures also increase, reaching 9°C (49°F) in April compared to 7°C (44°F) in March. However, April experiences a decrease in total precipitation, with 28 mm (1.1 in) over 7 days compared to 50 mm (2.0 in) over 10 days in March. Humidity levels remain fairly consistent between the two months, with March slightly higher at 90% compared to April's 87%. For more details on March weather, you can check Hanko weather in March.
April and May present a notable transition in weather conditions. In April, temperatures range from a chilly minimum of -2°C (29°F) to a maximum of 9°C (49°F), with an average of just 3°C (38°F). The month experiences about 28 mm (1.1 in) of precipitation over 7 days and is characterized by high humidity at 87%. In contrast, May sees a significant warming trend, with minimum temperatures rising to 1°C (35°F) and maximums reaching 18°C (64°F), leading to an average temperature of 8°C (46°F). Although May has slightly higher precipitation at 36 mm (1.4 in) over the same number of rainy days, humidity decreases to a more comfortable 76%. For a closer look at what May has in store, check out Hanko weather in May.
April weather is characterized by cooler temperatures, with averages hovering around 3°C (38°F) and maximums reaching only 9°C (49°F). This month also sees higher humidity levels at 87% and a total precipitation of 28 mm (1.1 in) spread over 7 days. In contrast, June brings a noticeable warmth, with average temperatures climbing to 14°C (57°F) and maximums hitting 22°C (73°F). Although June has slightly more precipitation at 37 mm (1.5 in), it experiences fewer rainy days, only 6, and lower humidity at 80%. For more details on June weather in Hanko, you can check Hanko weather in June.
April and July present stark contrasts in weather. In April, temperatures range from a chilly minimum of -2°C (29°F) to an average of 3°C (38°F), with a maximum reaching only 9°C (49°F). The month is marked by significant humidity at 87% and around 28 mm (1.1 in) of precipitation spread across 7 days. In contrast, July brings warmth and comfort, with temperatures ranging from a minimum of 12°C (53°F) to an average of 17°C (63°F) and highs peaking at 25°C (76°F). The precipitation in July increases slightly to 57 mm (2.2 in) over 8 days, but the humidity decreases to 80%, making it feel more pleasant. For more detailed weather insights, check Hanko weather in July.
In April, temperatures are generally cool, with a minimum of -2°C (29°F) and an average of around 3°C (38°F), peaking at a maximum of 9°C (49°F). The month typically experiences 28 mm (1.1 in) of precipitation over about 7 days, accompanied by high humidity levels at 87%. In contrast, August brings much warmer conditions, with minimum temperatures of 11°C (51°F) and averaging 17°C (63°F), reaching highs of 23°C (73°F). This month sees increased precipitation, totaling 94 mm (3.7 in) spread across about 13 days, while humidity slightly decreases to 83%. For more specific weather details about this month, you can refer to Hanko weather in August.
April and September present contrasting weather experiences. In April, temperatures can drop to a chilly -2°C (29°F), with an average of 3°C (38°F) and a peak of 9°C (49°F). The month is characterized by relatively low precipitation, totaling 28 mm (1.1 in) over about 7 days while maintaining a high humidity of 87%. In contrast, September brings a mild climate, with temperatures starting at a minimum of 7°C (45°F), averaging 14°C (57°F), and reaching a high of 20°C (68°F). This month experiences significantly more rainfall, with 71 mm (2.8 in) spread over roughly 14 days, yet retains the same humidity level of 87%. For those interested in exploring the specifics of September weather, here's more information: Hanko weather in September.
April and October present distinct weather characteristics, reflecting the transition from winter to spring and autumn to winter, respectively. In April, temperatures typically range from a chilly -2°C (29°F) at night to a mild maximum of 9°C (49°F), with an average around 3°C (38°F). The month experiences moderate precipitation at 28 mm (1.1 in) over about 7 days, accompanied by a humidity level of 87%. In contrast, October ushers in a milder climate, with temperatures starting at a minimum of 1°C (35°F) and peaking at 16°C (61°F), averaging 10°C (49°F). However, it is significantly wetter, receiving 123 mm (4.8 in) of rain across roughly 19 days, with humidity slightly higher at 90%. For more detailed information on the weather conditions in October, you can visit Hanko weather in October.
April and November exhibit quite different weather patterns, with April typically presenting cooler temperatures and less precipitation. In April, temperatures range from a minimum of -2°C (29°F) to a maximum of 9°C (49°F), accompanied by about 28 mm (1.1 in) of precipitation over approximately 7 days. In contrast, November features slightly colder minimum temperatures at -3°C (26°F) but has a higher average of 6°C (43°F) and can reach up to 13°C (56°F). This month experiences significantly more rainfall, totaling 82 mm (3.2 in) over around 17 days, and a higher humidity level of 91%. Thus, while April signals the beginning of spring with milder and drier conditions, November transitions into the chill of winter, bringing wetter and more humid weather. For more details on November weather specifics, you can check out Hanko weather in November.
In comparing the weather between April and December, we see distinctly different conditions. April tends to be milder, with average temperatures around 3°C (38°F) and a maximum of 9°C (49°F), while December presents a chillier atmosphere, featuring an average of 2°C (36°F) and highs reaching only 8°C (46°F). Precipitation is more frequent in December, with 80 mm (3.1 in) over 19 days compared to April's 28 mm (1.1 in) across 7 days. Additionally, humidity levels are slightly higher in December at 90%, compared to April's 87%. For more detailed information on December weather conditions, visit Hanko weather in December.
As April unfolds in Hanko, the transition from winter to spring becomes palpable, with temperatures beginning to creep upwards, making the air feel more refreshing. While the month still experiences chillier days compared to the peak of summer, the average temperature indicates a slow thaw with only occasional freezing lows. Additionally, April sees an increase in precipitation, with a noticeable uptick in humidity that adds a crispness to the brisk air. This month sets the stage for the vibrant blooms of May, making it a time of change and anticipation. For a deeper understanding of Hanko's seasonal shifts, explore the full details at Hanko Climate.