Last updated: August 21, 2025
In Hanko, Finland, May brings a refreshing climate as temperatures gradually rise, showcasing a maximum of 18°C (64°F) and an average of 8°C (46°F), while dipping to a cool minimum of 1°C (35°F). This transitional month experiences moderate precipitation, with approximately 36 mm (1.4 in) of rain spread over 7 days, resulting in a humidity level of 76%. As spring unfolds, Hanko's weather invites exploration, offering a vibrant backdrop for outdoor activities amidst its stunning coastal scenery.
As May arrives in Hanko, Finland, a noticeable transformation in temperatures signals the start of spring. The month's minimum temperature typically hovers around 1°C (35°F), while average daytime highs reach a pleasant 18°C (64°F). This is a significant leap from the preceding months, where lingering winter chills dominate, with averages stuck around 3°C (38°F) in April and even colder winter lows. By May, nature awakens, and the days grow warmer and longer, making it an ideal time for outdoor activities and enjoying the lush landscapes. The shift from the cold grasp of winter to milder springtime temperatures highlights May as a delightful turning point in Hanko's climate, inviting residents and visitors alike to embrace the season.
In May, Hanko, Finland experiences a moderate precipitation level, with 36 mm (1.4 in) falling over 7 days. Compared to the preceding months, May sees a slight uptick from the 28 mm (1.1 in) recorded in April, indicating a fresh transition into spring. This pattern of increasing rainfall continues into the summer months, as June and July each see precipitation levels rise to 37 mm (1.5 in) and 57 mm (2.2 in), respectively. The rainy days, however, remain relatively consistent, hinting at a stabilizing climate that balances warmth with light rainfall. Overall, May serves as a gentle precursor to the wetter summer ahead, contributing to the lush landscapes typical of Hanko.
In Hanko, Finland, May marks a notable shift in humidity levels, dropping to 76%. This decrease is significant compared to the earlier months of the year, which consistently hovered around 90% or higher. As the days grow warmer leading into summer, the transition from April's 87% to May's lower humidity signals a more comfortable outdoor experience. However, just as nature prepares for the sunny days ahead, humidity begins to creep back up in June at 80%. Overall, May stands out as a refreshing pause in humidity, offering a brief respite before the more humid summer months settle in.
As spring transitions into summer in Hanko, Finland, the UV Index shows a noticeable upward trend. In May, the UV Index reaches 5, categorizing exposure as moderate, with a burn time of approximately 30 minutes. This is a significant increase from the low readings of 1 seen in the winter months of January and February, and a moderate rise from April's 4. With the coming of warmer weather, it's essential to be mindful of sun exposure in May, especially as it sets the stage for the higher UV levels that June and July will bring. To stay informed about the evolving UV conditions, check out Hanko UV Index.
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As May unfolds in Hanko, Finland, residents bask in a remarkable 461 hours of sunshine, marking a delightful peak in the year's light output. Following the gradual ascent from January's meager 66 hours, the sun begins to make its presence felt, with each month leading up to May showcasing a steady increase—171 hours in February, 276 in March, and a substantial 377 in April. This trend of brightening days continues with June slightly surpassing May at 490 hours, before starting a gentle decline into the late summer months. The vibrant daylight not only enhances the picturesque coastal scenery but also invigorates the community, making May a quintessential month for outdoor activities and enjoying the natural beauty of this charming Finnish town.
In Hanko, Finland, the likelihood of sunny weather experiences a notable shift as the year progresses. Starting in January with a mere 5% chance of sunshine, the sun's presence gradually increases through the spring months, reaching 50% by April. While the odds dip slightly to 34% in May, this fluctuation is part of a larger upward trend, as the region transitions towards the sunnier summer months, where percentages soar to over 58% by June and peak at 61% in July. Thus, while May may not boast the highest chances for sunshine, it serves as a bridge to brighter days ahead, embodying the typical variations of Finland’s coastal climate.
In Hanko, Finland, May emerges as a vibrant transition into the heart of spring, boasting an impressive 17 hours of daylight. This surge in daylight follows a steady progression from the 6 hours in January to 14 hours by April, highlighting a remarkable increase that energizes both the natural world and its inhabitants. As the days lengthen, this month not only invites longer outdoor activities but also sets the stage for the forthcoming summer months, such as June, which enjoys the maximum daylight at 18 hours. The gradual climb from spring’s initial blooms in March to the sun-soaked days of May exemplifies the enchanting shift in Hanko's seasonal rhythm, signaling a time of renewal and exploration.
In Hanko, Finland, the weather experiences a noticeable shift in wind patterns as the year progresses, culminating in milder conditions by May. With an average wind speed of 5.9 m/s (13 mph), May stands out as one of the calmest months, following the more blustery spring months of March and April, which recorded averages of 7.8 m/s (18 mph) and 7.2 m/s (16 mph), respectively. This decline in wind speed not only signals the transition towards summer but also creates a more serene atmosphere ideal for outdoor activities. Interestingly, the wind starts to pick up again in June, suggesting that while May may be gentle, the surrounding months maintain a lively breezy character that Hanko is known for. Overall, the trends highlight a dynamic interplay between calm and invigorating winds that define this picturesque coastal region throughout the year.
Weather in Hanko varies notably across the year, with each month offering distinct climate conditions. This page compares May’s weather to other months in Hanko, focusing on differences in temperature, rainfall, humidity, and UV levels.
May and January present stark contrasts in weather. In January, temperatures range from a chilling -13°C (8°F) at their lowest to a modest 8°C (46°F) at their peak, with an average of just 1°C (33°F). The month experiences significant precipitation, totaling 56 mm (2.2 inches) over 14 days, coupled with high humidity levels at 92%. In contrast, May offers a much milder climate, with temperatures fluctuating between a minimum of 1°C (35°F) and a maximum of 18°C (64°F), resulting in a more comfortable average of 8°C (46°F). Precipitation in May is lower at 36 mm (1.4 inches) and fewer rainy days, totaling just 7, while humidity levels slightly decrease to 76%. For more detailed information, you can check Hanko weather in January.
When comparing the weather between February and May, it's clear that May is significantly milder. In May, temperatures range from a minimum of 1°C (35°F) to a maximum of 18°C (64°F), with an average of 8°C (46°F). In contrast, February experiences much colder weather, with temperatures ranging from a frigid -13°C (10°F) to a maximum of 6°C (43°F) and an average temperature of -1°C (31°F). Additionally, while May sees 36 mm (1.4 in) of precipitation over approximately 7 days, February has a higher total of 49 mm (1.9 in) spread across 11 days, contributing to its higher humidity level of 91% compared to May's 76%. For more detailed information about February weather, you can visit Hanko weather in February.
In comparing the weather of March and May, we see a notable shift in temperatures and conditions. March typically experiences colder temperatures, with a minimum of -10°C (13°F) and an average around 0°C (33°F), while May offers a more pleasant range, with minimum temperatures of 1°C (35°F) and averages reaching up to 8°C (46°F). Precipitation is somewhat higher in March at 50 mm (2.0 in), occurring over 10 days, compared to May's 36 mm (1.4 in) over 7 days. Additionally, March has a higher humidity level of 90%, making it feel chillier despite the lower average temperatures. For a detailed look at March weather specifics, you can refer to Hanko weather in March.
May generally experiences milder temperatures compared to April, with the minimum temperature rising from -2°C (29°F) in April to 1°C (35°F) in May. The average temperature in May is also warmer at 8°C (46°F) compared to just 3°C (38°F) in April, and the maximum temperature can reach as high as 18°C (64°F) in May, significantly higher than April's peak of 9°C (49°F). Although May sees slightly more precipitation at 36 mm (1.4 in) compared to April's 28 mm (1.1 in), both months have the same number of rainy days (7). Additionally, humidity is lower in May at 76% versus April's 87%, making May feel more comfortable overall. For more detailed information on April weather, you can check Hanko weather in April.
In May, the weather is quite cool, with temperatures ranging from a minimum of 1°C (35°F) to a maximum of 18°C (64°F) and an average of 8°C (46°F). The month sees about 36 mm (1.4 in) of precipitation over 7 days, accompanied by a humidity level of 76%. In contrast, June welcomes slightly warmer conditions, with lows of 6°C (44°F) and highs reaching 22°C (73°F), averaging around 14°C (57°F). Precipitation remains similar at 37 mm (1.5 in), but occurs over just 6 days, and humidity increases slightly to 80%. For more details, you can check out Hanko weather in June.
May and July present quite a contrast in weather conditions. In May, temperatures range from a chilly minimum of 1°C (35°F) to a comfortable maximum of 18°C (64°F), with an average of 8°C (46°F). The month sees about 36 mm (1.4 in) of precipitation over 7 days, accompanied by a humidity level of 76%. In contrast, July boasts significantly warmer temperatures, with a minimum of 12°C (53°F) and a maximum of 25°C (76°F), averaging around 17°C (63°F). Rainfall increases to 57 mm (2.2 in) over 8 days, and humidity rises slightly to 80%. For more detailed insights into July weather, check out Hanko weather in July.
In May, the weather in Hanko is characterized by cooler temperatures, with a minimum of 1°C (35°F) and an average of 8°C (46°F), reaching a maximum of 18°C (64°F). The month sees moderate precipitation, totaling 36 mm (1.4 in) over about 7 days, and a humidity level of 76%. In contrast, August offers a significantly warmer climate, with minimum temperatures around 11°C (51°F) and averages peaking at 17°C (63°F), with maximums reaching 23°C (73°F). However, it also brings more rain, as precipitation totals 94 mm (3.7 in) over approximately 13 days, with humidity rising slightly to 83%. For more details on the August weather, check out Hanko weather in August.
May and September present distinct weather patterns as the seasons shift. In May, temperatures range from a cool minimum of 1°C (35°F) to a pleasant maximum of 18°C (64°F), with an average of 8°C (46°F). This month sees relatively low precipitation at 36 mm (1.4 in) over about 7 days, accompanied by a humidity level of 76%. In contrast, September warms slightly with minimum temperatures of 7°C (45°F) and a maximum of 20°C (68°F), averaging around 14°C (57°F). However, it has a higher precipitation level of 71 mm (2.8 in) spread over 14 days and increased humidity at 87%. For more detailed information, you can refer to Hanko weather in September.
May and October present distinct weather profiles, showcasing the transition between spring and autumn. In May, temperatures range from a minimum of 1°C (35°F) to a maximum of 18°C (64°F), with an average temperature of 8°C (46°F). The month experiences moderate precipitation of 36 mm (1.4 in) over about 7 days, accompanied by a humidity level of 76%.
Conversely, October shows slightly cooler temperatures, with a minimum of 1°C (35°F), an average of 10°C (49°F), and a maximum of 16°C (61°F). However, it significantly increases in precipitation, totaling 123 mm (4.8 in) spread across 19 days, and a higher humidity level of 90%. This makes October a much wetter and more humid month compared to May. For a deeper look into October conditions, you can visit Hanko weather in October.
May and November offer quite different weather experiences. In May, temperatures range from a minimum of 1°C (35°F) to a maximum of 18°C (64°F), with an average of 8°C (46°F). The month sees about 36 mm (1.4 in) of precipitation over approximately 7 days and maintains a humidity level of 76%. In contrast, November presents cooler conditions with temperatures ranging from a low of -3°C (26°F) to a high of 13°C (56°F) and an average of 6°C (43°F). Precipitation is significantly higher during November, reaching 82 mm (3.2 in) across around 17 days, accompanied by increased humidity at 91%. For more detailed information on November's weather, you can visit Hanko weather in November.
May and December present stark contrasts in weather conditions. In May, temperatures range from a mild 1°C (35°F) at night to a pleasant average of 8°C (46°F), peaking at a maximum of 18°C (64°F) during the day, with moderate rainfall totaling 36 mm (1.4 in) over about 7 days. The humidity is relatively high at 76%, contributing to a fresh and vibrant atmosphere as spring unfolds.
In contrast, December brings much colder conditions, with nighttime lows dropping to -9°C (17°F) and a daytime average of only 2°C (36°F), reaching a maximum of 8°C (46°F). The month sees significantly more precipitation, with 80 mm (3.1 in) spread across approximately 19 days, and higher humidity levels at 90%, creating a damp and chilly environment. For more specific details on December weather, refer to Hanko weather in December.
As spring unfolds in Hanko, May brings a delightful shift in the weather. With an average temperature of 8°C, the days gradually warm up, making it more inviting compared to the chill of earlier months. While the chance of rain persists with about 36 mm of precipitation spread over 7 days, the overall humidity remains elevated at 76%, contributing to that refreshing spring atmosphere. This transitional month is perfect for outdoor activities, as nature comes to life, making it a beautiful time to explore. For a more in-depth look at Hanko's weather patterns throughout the year, check out Hanko Climate.