Last updated: August 21, 2025
April in Kalajoki, Finland is a month of transition, marked by a striking temperature range that spans from a comfortable 20°C (68°F) at its peak to a chilly -13°C (9°F) at its lowest. The average temperature hovers around 2°C (36°F), inviting both the promise of spring and the lingering chill of winter. With 39 mm (1.5 in) of precipitation spread over 7 days, residents can expect a mix of rain and possibly even some late snow. Humidity levels sit high at 86%, adding to the brisk, refreshing atmosphere. This April, Kalajoki's weather offers a unique glimpse into the changing seasons, combining cool air with the hint of warmer days ahead.
In April, Kalajoki experiences a notable transformation as winter gives way to spring. With a minimum temperature of -13°C (9°F) and an average temperature climbing to 2°C (36°F), the cold grip eases, allowing for a significant increase in warmth. The maximum temperature can reach a delightful 20°C (68°F), showcasing the first hints of milder days ahead. This month marks a dramatic shift from the biting cold of winter, as temperatures steadily rise from the frigid conditions of January through March. April serves as a bridge, hinting at the imminent arrival of summer, bringing a refreshing reprieve as nature awakens in beautiful Kalajoki.
In April, Kalajoki experiences a relatively steady pattern of precipitation, receiving 39 mm (1.5 inches) of rain over the course of 7 days. This mirrors the precipitation levels of the previous month, March, while also showcasing a slight increase compared to the amounts recorded in January and February. As spring unfolds, residents witness a gradual rise in both precipitation and warmth, setting the stage for richer rainfall in the coming months, particularly in May, when totals soar to 55 mm (2.2 inches). Notably, April marks the transition into a busier weather season, where the days become longer and more temperate, hinting at the lushness to come as summer approaches.
In April, Kalajoki, Finland experiences a noticeable drop in humidity, dipping to 86% from the previous months, where it hovered just below the 90% mark. This decrease signifies a transition towards the drier months ahead, as May follows with an even lower 80% humidity level. The trend suggests that as spring unfolds, the air gradually becomes less saturated, providing a breath of fresh air after the winter's heavy moisture. With each passing month, residents can expect a shift, culminating in the summer months, where humidity stabilizes around the 76-83% range. This seasonal ebb and flow of humidity not only reflects the changing weather patterns but also sets the stage for the vibrant growth of spring and summer in this beautiful Finnish locale.
In April, Kalajoki, Finland, experiences a noticeable shift in the UV Index, which rises to 4, marking a transition to moderate exposure levels. This increase from March’s Index of 3 signals that, while sun safety measures may not be critical yet, it’s time to start being mindful of UV exposure, especially during outdoor activities. With a burn time of just 30 minutes, residents and visitors alike should embrace the sunny days while being aware that as spring unfolds, the sun's intensity gradually escalates, leading into the brighter months ahead. For more information about the UV Index throughout the year, visit Kalajoki UV Index.
UV Risk Categories
In Kalajoki, Finland, April brings a delightful burst of sunshine, marking a significant turning point in the year with 370 hours of daylight, a notable increase from March's 275 hours. This upward trend in sunlight hours continues as we move into late spring and early summer, with May reaching 450 hours and June peaking at 515 hours. The gradual ascent from the wintry gloom of January’s mere 36 hours highlights the region's transformation, as daylight begins to dominate the landscape. As the months progress, the golden rays of April herald the vibrant energy of summer, illuminating both the days and the spirits of those who bask in its glow.
In April, Kalajoki, Finland, starts to shake off the winter chill as the likelihood of sunny weather reaches 47%, marking a promising step toward brighter days. This increase follows a steady rise from a mere 7% in January, reflecting the transition from snow-laden landscapes to hints of spring. With the sun making a welcome return after the long winter months, April shines brighter than March's 43%, signaling more opportunities to bask in the emerging warmth. As we move deeper into the season, the trend continues, paving the way for even sunnier months ahead, particularly in June and July when chances peak at 50% and 53%, respectively. April serves as a delightful precursor to the vibrant summer that awaits.
As April unfolds in Kalajoki, Finland, residents are greeted with a significant increase in daylight, basking in 15 hours of sunlight by month's end. This shift highlights a remarkable trend, where the length of daylight dramatically rises from just 5 hours in January to a vibrant 18 hours in May. Following the extended light of spring, the days will peak in June before gradually tapering off. This pattern starkly contrasts with the earlier months, where the long, dark winters slowly give way to the rejuvenating brightness of spring, inviting both locals and visitors to embrace the beauty of the extended daylight.
As April unfolds in Kalajoki, Finland, the average wind speed settles at a gentle 3.5 m/s (8 mph). This marks a slight increase from the previous months, showing a welcome transition from the brisk winds of March. Interestingly, as the temperatures begin to warm, the winds remain relatively moderate, suggesting that while spring brings a freshness to the air, it does so with a soft touch. The winds in April are notably milder than the gusty conditions anticipated in October, when speeds jump to 4.4 m/s (10 mph). This trend highlights a distinctive seasonal pattern, where the crispness of winter gradually gives way to the calmer breezes of spring, creating an inviting atmosphere for outdoor exploration.
Weather in Kalajoki varies notably across the year, with each month offering distinct climate conditions. This page compares April’s weather to other months in Kalajoki, focusing on differences in temperature, rainfall, humidity, and UV levels.
April and January present notably different weather conditions. In January, temperatures can plunge to as low as -28°C (-18°F), with an average temperature of -5°C (22°F) and occasional highs reaching 6°C (44°F). The humidity is quite high at 99%, contributing to a cold and crisp atmosphere. Precipitation is relatively low at 36 mm (1.4 in) over 9 days, but the air is damp. In contrast, by April, the weather begins to warm up, with temperatures ranging from a minimum of -13°C (9°F) to a pleasant average of 2°C (36°F) and a maximum of 20°C (68°F). Though April still experiences some humidity at 86%, the overall feel is much more temperate. Precipitation slightly increases to 39 mm (1.5 in) over 7 days, indicating a shift towards a more spring-like climate. For more details on January weather, you can check Kalajoki weather in January.
April and February present quite contrasting weather conditions. In February, temperatures plunge with a minimum of -27°C (-16°F) and an average of -7°C (20°F), making it the coldest month of the two. With humidity levels at a high 97% and precipitation spread over 8 days, the chilly atmosphere can feel quite damp. In contrast, April welcomes a significant rise in temperatures, ranging from a minimum of -13°C (9°F) to an average of 2°C (36°F), and even reaching a maximum of 20°C (68°F). The humidity remains relatively high at 86%, but the decrease in cold makes it feel more pleasant, despite similar precipitation levels of 39 mm (1.5 in) over 7 days. For more details on February weather, you can refer to Kalajoki weather in February.
April brings a noticeable warming trend compared to March, with average temperatures rising from -3°C (27°F) in March to 2°C (36°F) in April. The minimum temperatures also improve significantly, from a chilly -28°C (-19°F) in March to a more tolerable -13°C (9°F) in April. Although both months see similar levels of precipitation—39 mm (1.5 in) in April and 37 mm (1.5 in) in March—April experiences slightly fewer rainy days, with precipitation occurring on 7 days compared to 10 days in March. Humidity levels are still high in both months, but they decrease from 93% in March to 86% in April, indicating a gradual shift towards drier conditions. For more details on March's climate, you can visit Kalajoki weather in March.
April and May showcase a distinct transition in weather patterns. In April, temperatures range from a chilly minimum of -13°C (9°F) to a maximum of 20°C (68°F), with an average of 2°C (36°F). The month experiences 39 mm (1.5 in) of precipitation across 7 days, coupled with high humidity at 86%. Conversely, May brings warmer conditions with temperatures ranging from -5°C (24°F) to a pleasant maximum of 27°C (80°F), and an average temperature of 8°C (47°F). Although May sees a slight increase in precipitation at 55 mm (2.2 in) over 8 days, the humidity drops to 80%. For a closer look at the climatic conditions, check out the Kalajoki weather in May.
April and June present contrasting weather patterns. In April, temperatures range from a chilly minimum of -13°C (9°F) to a mild maximum of 20°C (68°F), with an average temperature of 2°C (36°F). The month experiences 39 mm (1.5 in) of precipitation over 7 days, accompanied by high humidity at 86%. In contrast, June warms up significantly, with temperatures ranging from a minimum of 0°C (32°F) to a maximum of 30°C (86°F) and an average of 14°C (58°F). Precipitation in June increases slightly to 53 mm (2.1 in) over 8 days, while humidity drops to 76%. For more detailed weather information, check out Kalajoki weather in June.
April and July present stark contrasts in weather patterns. In April, temperatures fluctuate from a chilly minimum of -13°C (9°F) to a pleasant maximum of 20°C (68°F), with an average of 2°C (36°F). The month sees about 39 mm (1.5 in) of precipitation over seven days, contributing to a high humidity level of 86%. In contrast, July boasts a much warmer climate, with temperatures ranging from a minimum of 3°C (38°F) to a scorching maximum of 33°C (91°F) and an average of 17°C (63°F). The summer month also experiences increased rainfall, totaling 68 mm (2.7 in) over eleven days, albeit with slightly lower humidity at 79%. For more detailed insights on this summer month, check out Kalajoki weather in July.
April and August exhibit significantly different weather patterns. In April, temperatures range from a chilly minimum of -13°C (9°F) to a mild maximum of 20°C (68°F), with an average of just 2°C (36°F). The month sees a fair amount of precipitation at 39 mm (1.5 in) over approximately 7 days, accompanied by relatively high humidity at 86%. In contrast, August experiences much warmer temperatures, with a minimum of 2°C (35°F), an average of 15°C (59°F), and a peak of 33°C (92°F). During this month, precipitation increases to 87 mm (3.4 in) spread over 15 days, while humidity drops slightly to 83%. For more details on weather conditions in August, check out Kalajoki weather in August.
April and September present contrasting weather experiences. In April, temperatures range from a chilly minimum of -13°C (9°F) to a comfortable maximum of 20°C (68°F), with an average of 2°C (36°F). The month sees around 39 mm (1.5 in) of precipitation over approximately 7 days, accompanied by high humidity at 86%. In contrast, September features milder temperatures, with a minimum of -3°C (26°F) and a maximum of 23°C (75°F), averaging at 10°C (50°F). This month experiences more rainfall, totaling 75 mm (3.0 in) across about 12 days, and humidity rises slightly to 89%. For a more detailed overview, you can check Kalajoki weather in September.
April and October present distinct weather characteristics despite both being transitional months. April typically shows a broader temperature range, with a minimum of -13°C (9°F) and a maximum of 20°C (68°F), averaging around 2°C (36°F). This month also experiences relatively lower precipitation at 39 mm (1.5 in) over about 7 days, with humidity at 86%. In contrast, October tends to be cooler overall, with temperatures ranging from a minimum of -14°C (8°F) to a maximum of 19°C (67°F), averaging 5°C (41°F). However, it has more frequent rainfall, totaling 81 mm (3.2 in) across 14 days, coupled with higher humidity at 94%. For those looking to explore October weather specifics, detailed information is available at Kalajoki weather in October.
April and November present notably different weather patterns, with April marking the transition from the chill of winter to the mildness of spring, while November exhibits the onset of winter's grip. In April, temperatures range from a chilly -13°C (9°F) at their lowest to a refreshing max of 20°C (68°F), accompanied by an average of 2°C (36°F). It experiences 39 mm (1.5 in) of precipitation over approximately 7 days, with humidity at a moderate 86%. In contrast, November sees cooler temperatures, with a minimum of -18°C (0°F) and a maximum of 10°C (51°F), averaging around 1°C (33°F). The month is wetter, with 58 mm (2.3 in) of precipitation over 11 days and a higher humidity level of 94%. For more detailed information, take a look at the Kalajoki weather in November.
When comparing the weather in April and December, notable differences emerge. April experiences a much milder temperature range, with minimums of -13°C (9°F) and maximums reaching up to 20°C (68°F), while December is significantly colder, featuring minimums of -22°C (-8°F) and highs only reaching 5°C (42°F). Precipitation levels in December are slightly higher at 48 mm (1.9 in) over more days—12 days compared to April's 39 mm (1.5 in) over just 7 days. Additionally, humidity is notably higher in December at 98% versus April’s 86%, contributing to a distinctly damp and frigid atmosphere. For more detailed information about the weather during this month, check out Kalajoki weather in December.
As April unfolds in Kalajoki, it marks a notable transition from the deep freeze of winter to the budding warmth of spring. With temperatures that can swing from chilly lows to relatively mild highs, April often surprises residents with its variability. This month also sees a moderate amount of precipitation, hinting at the increasing humidity levels that pave the way for new growth. Compared to the harsh cold of preceding months, April feels like a breath of fresh air, inviting outdoor activities and scenic enjoyment. For a deeper dive into the weather trends, visit Kalajoki Climate.