Last updated: August 21, 2025
April in Hämeenlinna, Finland showcases a dramatic transition as winter gives way to spring. The maximum temperature can reach a pleasant 21°C (70°F), while the average hovers around 3°C (38°F), and chilly nights may dip as low as -13°C (9°F). Rainfall is a common theme, with roughly 46 mm (1.8 in) of precipitation spread over 12 days, contributing to a humidity level of 86%. This mix of warmth and moisture paints a vibrant, if unpredictable, picture of the Finnish spring, inviting outdoor enthusiasts to experience the seasonal bloom amidst the lingering coolness.
In Hämeenlinna, Finland, April marks a significant transition as winter gives way to spring. This month welcomes a snug average temperature of 3°C (38°F), a noticeable uplift from the harsh cold of the preceding months. The minimum temperature can drop to -13°C (9°F), yet the days warm up dramatically, with sunny spells pushing the maximum to a delightful 21°C (70°F). This range reflects a broader trend of warming, making April a month of promise where the remnants of winter are replaced by the budding vitality of spring. It’s an exhilarating time to experience the changing landscape, where the chill of March is replaced by a renewed sense of warmth and life.
In Haemeenlinna, Finland, April marks a transition in precipitation patterns as the winter thaw gives way to the more temperate spring months. With 46 mm (1.8 in) of rainfall over 12 days, April’s precipitation levels are slightly lower than the preceding months, yet they remain significant in maintaining the region's vibrant ecosystem. The consistency of rainfall during April not only supports blooming flora but also prepares the ground for the increased moisture that May will bring, with its higher totals of 60 mm (2.4 in). As spring progresses, this trend of steady precipitation serves as a reminder of nature's renewal, with each drop contributing to the lush landscapes that characterize Finnish springs.
In April, the humidity in Hämeenlinna, Finland begins to show a significant decline, dipping to 86%. This marks a noticeable shift from the winter months, where humidity levels hovered around an impressive 97% in January and remained fairly high at 95% in February and 93% in March. As spring unfolds, the moisture in the air gradually decreases, paving the way for more comfortable conditions. This trend continues through May and June, where humidity levels drop further to 75%, offering residents a refreshing change after the long, damp winter. The fluctuation in humidity indicates a transition, signaling that warmer months are on the horizon while still retaining a hint of the cool, moist charm typical of Finnish springs.
As April arrives in Hämeenlinna, Finland, the UV Index climbs to 4, indicating a moderate exposure level that requires some sun safety awareness. This increase from March's Index of 3 reflects the gradual emergence of spring, with similar moderate levels expected in May. With a burn time of 30 minutes, it's essential to take precautions if you plan to bask in the sun. As the season progresses, residents and visitors alike should be mindful of the rising UV levels, leading up to the high Index readings in the summer months. For more details on UV Index trends throughout the year, check out Haemeenlinna UV Index.
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April marks a significant turning point in Haemeenlinna, Finland, as the sun begins to shine more brightly and consistently after the long, dark winter months. With an impressive 346 hours of sunshine, April nearly doubles the hours from March, heralding the arrival of spring. This upward trend continues into May and June, where the days become even longer and brighter, peaking at 479 hours of sunshine in June. Each month shows a dramatic increase in daylight, creating a vibrant atmosphere that awakens the landscape and invigorates the community. As the year progresses, the sunshine gradually tapers off, but the exuberance of April remains a cherished memory, marking the rejuvenation that comes with the arrival of warmer days.
April marks a significant turning point in the likelihood of sunny weather in Hämeenlinna, Finland, with a sunny chance of 42%—an increase from 37% in March. This upward trend is a welcoming sign after the long, dark winter months, as the days gradually grow longer and warmer. Compared to the previous months, where January and February barely muster 3% and 14% of sunshine, April offers a refreshing glimpse of brighter days ahead. While the sunny potential dips in May and below in August, the transition into April heralds the beginning of more favorable weather, paving the way for summer's eventual arrival.
As spring unfolds in Hämeenlinna, Finland, the increase in daylight is strikingly evident. April marks a pivotal transition, with daylight lasting 14 hours, a significant jump from the 11 hours in March. This gradual extension of sunlight foreshadows the longer days ahead, as May brings a generous 17 hours of light. The steady climb from the deep winter months, where daylight barely reached 6 hours in January, to April's burgeoning brightness invigorates both nature and the community. As summer approaches, the abundance of sunlight peaks in June with nearly 19 hours, celebrating the vibrant energy of the season. The progression of daylight in Hämeenlinna encapsulates the dynamic rhythm of the year, inviting residents to revel in the return of longer, brighter days.
In April, Haemeenlinna experiences an average wind speed of 3.4 m/s (8 mph), which offers a refreshing transition into spring. While the wind picks up slightly from the previous month of March at 3.9 m/s (9 mph), April's breezy conditions are markedly gentler compared to the stronger winds that often characterize the fall months, peaking in October at 4.2 m/s (9 mph). This shift reflects a gradual calm as the climate warms, with April's breeze inviting residents and visitors alike to enjoy blossoming landscapes and outdoor activities. In comparison to the slower summer months, where the wind slows to around 2.7 to 3.1 m/s, April’s moderate winds provide an invigorating backdrop to the awakening of nature.
Weather in Haemeenlinna varies notably across the year, with each month offering distinct climate conditions. This page compares April’s weather to other months in Haemeenlinna, focusing on differences in temperature, rainfall, humidity, and UV levels.
In comparing the weather between April and January, April offers milder temperatures, with a minimum of -13°C (9°F) and an average of 3°C (38°F), reaching a maximum of 21°C (70°F). This contrasts sharply with January, which experiences much colder conditions, where temperatures can drop to a minimum of -25°C (-13°F) and average around -4°C (25°F), with highs only reaching 8°C (46°F). Although both months see relatively similar precipitation levels, April boasts slightly less with 46 mm (1.8 in) over 12 days compared to January's 48 mm (1.9 in) across 11 days. Additionally, January holds a higher humidity level at 97%, compared to April's 86%, making January feel much colder and damp. For more detailed information on January weather, visit Haemeenlinna weather in January.
In comparing the weather between February and April, it’s clear that April offers a notable shift towards milder conditions. While February experiences much colder temperatures with a minimum of -28°C (-18°F) and an average of -5°C (24°F), April sees temperatures ranging from a low of -13°C (9°F) to an average of 3°C (38°F), and peaking at a comfortable 21°C (70°F). Precipitation levels are somewhat similar, with February receiving 41 mm (1.6 in) over 9 days, compared to April’s 46 mm (1.8 in) over 12 days, but the higher humidity in February at 95% creates a more biting chill. In contrast, April's humidity of 86%, while still significant, accompanies a rise in temperatures that makes outdoor activities more appealing. For further insights into February's climate, check out Haemeenlinna weather in February.
In comparing the weather between March and April, it's evident that April experiences a significant warming trend. April's average temperature is 3°C (38°F), a notable increase from March's average of -2°C (29°F). This change is reflected in the maximum temperatures as well, with April reaching up to 21°C (70°F), compared to March's highest of only 11°C (52°F). Precipitation levels are quite similar, with April recording 46 mm (1.8 in) over 12 days, slightly more than March's 43 mm (1.7 in) over 11 days. Humidity is slightly lower in April at 86%, while March's higher humidity of 93% contributes to its chilly feel. For a detailed look at March weather in Haemeenlinna, check out Haemeenlinna weather in March.
April and May show a notable shift in weather patterns, with May generally being warmer and drier. In April, temperatures range from a minimum of -13°C (9°F) to a maximum of 21°C (70°F), with an average temperature of only 3°C (38°F). The month experiences 46 mm (1.8 in) of precipitation over 12 days, combined with high humidity at 86%.
In contrast, May sees temperatures rising significantly, with lows of -4°C (26°F) and highs reaching up to 28°C (82°F), leading to a more comfortable average of 10°C (50°F). Although May has more total precipitation at 60 mm (2.4 in), it occurs over just 10 days, and humidity decreases to 75%. This transition marks May as a more pleasant month compared to its predecessor. For more details, you can check Haemeenlinna weather in May.
April weather is characterized by a significant chill, with temperatures ranging from a brisk minimum of -13°C (9°F) to a milder maximum of 21°C (70°F) and an average of just 3°C (38°F). The month sees considerable humidity at 86% and experiences precipitation over 12 days, totaling 46 mm (1.8 in). In contrast, June welcomes warmer conditions, boasting a minimum temperature of 2°C (35°F) and an average temperature of 16°C (61°F), with maximums reaching a comfortable 31°C (88°F). Although June sees slightly more rainfall at 71 mm (2.8 in) over 10 days, the overall humidity drops to 75%. For a detailed forecast, check out Haemeenlinna weather in June.
In comparing April and July weather, April presents a brisk and transitional climate with temperatures ranging from a chilly -13°C (9°F) at its lowest to a mild 21°C (70°F) at its peak, averaging around 3°C (38°F). The month sees precipitation of 46 mm (1.8 in) over approximately 12 days, contributing to a high humidity level of 86%. In contrast, July offers a much warmer environment, with minimum temperatures of 6°C (44°F) and maximums reaching 31°C (88°F), averaging 17°C (63°F). Despite being the wettest month with 85 mm (3.4 in) of rain over 11 days, July’s humidity is slightly lower at 80%. For more specific details, check out Haemeenlinna weather in July.
In comparing the weather between April and August, a noticeable shift occurs in both temperature and precipitation. April experiences colder temperatures, with a minimum of -13°C (9°F) and an average of only 3°C (38°F), while August enjoys warmer conditions, ranging from a minimum of 5°C (42°F) to a comfortable average of 16°C (61°F) and a peak of 30°C (86°F). Precipitation increases in August to 80 mm (3.2 in) over 13 days, compared to April’s 46 mm (1.8 in) over 12 days. Interestingly, humidity levels remain fairly high in both months, with April at 86% and August slightly lower at 83%. For more detailed information about August weather, you can visit Haemeenlinna weather in August.
In April, temperatures in Hämeenlinna range from a chilly minimum of -13°C (9°F) to a pleasant maximum of 21°C (70°F), with an average of around 3°C (38°F). The month is characterized by high humidity at 86% and receives about 46 mm (1.8 in) of precipitation over 12 days. In contrast, September brings milder conditions, with temperatures fluctuating between -2°C (29°F) at night and a maximum of 23°C (74°F) during the day, averaging 11°C (52°F). Although September experiences slightly higher precipitation of 65 mm (2.6 in) over 13 days and a humidity level of 90%, it marks a transition into the cooler autumn months. For more detailed information, check Haemeenlinna weather in September.
April and October present distinct weather patterns, showcasing the transition between seasons. In April, temperatures can dip as low as -13°C (9°F), with an average of 3°C (38°F) and daytime highs reaching 21°C (70°F). This month experiences about 46 mm (1.8 in) of precipitation over 12 days, coupled with a high humidity level of 86%. In contrast, October features milder conditions, with minimum temperatures around -6°C (22°F) and an average of 6°C (43°F), while the maximum can reach 18°C (65°F). However, October is wetter, receiving approximately 75 mm (2.9 in) of precipitation across 15 days and higher humidity at 93%. For more detailed information, you can visit Haemeenlinna weather in October.
April and November present distinct weather patterns, despite their proximity in the calendar. In April, temperatures range from a brisk minimum of -13°C (9°F) to a comfortable maximum of 21°C (70°F), with an average of 3°C (38°F). The month experiences moderate precipitation at 46 mm (1.8 in) over 12 days, accompanied by a humidity level of 86%. In contrast, November exhibits cooler temperatures, with a minimum of -11°C (13°F) and a maximum of 12°C (54°F), along with a similar average of 2°C (36°F). The precipitation slightly increases to 52 mm (2.1 in) over 11 days, and humidity peaks at 94%. For more detailed insights, check out Haemeenlinna weather in November.
April and December present contrasting weather conditions, reflecting the transition from winter to spring. In April, temperatures range from a minimum of -13°C (9°F) to a pleasant maximum of 21°C (70°F), with an average of 3°C (38°F). With 46 mm (1.8 in) of precipitation spread over 12 days, and a relatively lower humidity of 86%, April feels much milder compared to December.
In contrast, December is much colder, with temperatures dipping to a minimum of -20°C (-5°F) and averaging -2°C (29°F), peaking at just 5°C (42°F). This month witnesses higher precipitation levels at 63 mm (2.5 in) over 14 days, coupled with a higher humidity of 95%. The stark differences in temperature and weather conditions between these two months highlight the significant seasonal shift. For more details, you can check Haemeenlinna weather in December.
April in Hämeenlinna is a month of transition, where the lingering chill of winter slowly gives way to spring's warmth. With temperatures ranging from frigid lows to pleasantly mild highs, this month stands out as a time of variability. While the average temperature hovers around 3°C, the maximum can reach as high as 21°C, inviting the early blooms of spring. However, April also brings its share of rain, with nearly half the month experiencing precipitation, resulting in an average humidity of 86%. This combination of unpredictable temperatures and frequent rain sets April apart from the more stable weather patterns of other months. For a more in-depth look at the climate throughout the year, visit Haemeenlinna Climate.