Last updated: August 27, 2025
May in Alta, Sweden offers a delightful transition into spring, with temperatures soaring to a pleasant maximum of 21°C (69°F) while averaging around 9°C (49°F). However, the month can start off chilly, with minimums dipping down to -2°C (29°F). Expect 50 mm (2.0 in) of precipitation spread over 9 days, which contributes to the region's lush landscape but also means it's wise to pack a rain jacket. With an average humidity level of 77%, the air is invigorating yet slightly moist, making May an enchanting time to experience Alta's natural beauty.
In Alta, Sweden, May marks a delightful transition into warmer weather, showcasing a significant rise in temperatures compared to the preceding months. With minimum temperatures nudging slightly above freezing at -2°C (29°F) and an average of 9°C (49°F), the chill of winter begins to recede. The days become notably more pleasant, with a maximum of 21°C (69°F) inviting outdoor adventures and the blooming of vibrant flora. This month effectively bridges the lingering coolness of spring with the balmy arrival of summer, illustrating a fascinating upward trend as the region gears up for the sunnier months ahead. As daylight extends and the landscape warms, residents and visitors alike can revel in the invigorating embrace of May's temperate charm.
May in Alta, Sweden, ushers in a noticeable increase in precipitation, with 50 mm (2.0 in) of rain recorded over the month, making it one of the wetter months so far in the year. This uptick in rainfall is mirrored by a consistent 9 precipitation days, aligning with the trend of increasing moisture as spring transitions into summer. Notably, May's precipitation is significantly higher than that of April, which saw just 25 mm (1.0 in) over 7 days, suggesting a burgeoning vitality in the landscape as nature awakens. As the days lengthen and temperatures rise, this infusion of water is essential for nurturing the vibrant growth of flora, laying the groundwork for the lush summer months ahead in Alta.
In May, Alta, Sweden experiences a noticeable shift in humidity, dropping to 77%, marking one of the lower points in the year. This reduction continues a gradual decline that begins in April when the humidity is 85%. As spring progresses and the days warm up, the air becomes notably drier, leading into the summer months. June and July further reinforce this trend, showcasing humidity levels of 76% and 74%, respectively. Overall, May serves as a transitional month where residents can enjoy a more comfortable atmosphere, paving the way for the relatively drier conditions that characterize the summer season.
As spring transitions into summer, May in Alta, Sweden marks a notable shift in UV exposure with an UV Index of 5, indicating a moderate risk of harm from unprotected sun exposure. With a burn time of just 30 minutes, it's essential for residents and visitors to be mindful of sun safety practices. This trend builds on the gradual increase seen from January through April, where the UV Index steadily rose from a low of 1 to a moderate 4. As the days get longer and sunnier, preparations for the upcoming higher UV levels in June and July become vital. For more detailed information, visit the Alta UV Index.
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May marks a significant peak in sunshine hours in Alta, Sweden, with 454 hours of bright, uplifting light. This not only reflects a continuation of the increasing trend from the 71 hours in January but also signifies the beginning of the summer's radiant embrace. The gradual rise in sunshine is particularly striking from April to May, where a leap from 366 to 454 hours captures the essence of late spring, inviting outdoor adventures and community gatherings. As the days grow longer, leading into June with 477 hours, residents and visitors alike can bask in the glory of longer days, underscoring the transformative power of sunlight in this picturesque Arctic region.
As spring transitions into summer, the likelihood of sunny weather in Alta, Sweden reveals an intriguing pattern. In May, the chance of sunshine stands at 31%, slightly lower than the previous month, April, which enjoys a peak of 49%. This decline serves as a reminder that while May continues to offer some delightful sunny days, it also ushers in a period of unpredictability. Notably, the month of June marks a significant shift, with sunny chances climbing to 55%, highlighting how the onset of summer brings more consistent warmth and clearer skies. As such, while May may not guarantee an abundance of sunshine, it’s a month of gradual transition that perfectly sets the stage for the radiant days ahead.
As the year unfolds in Alta, Sweden, daylight hours gradually increase with the arrival of spring, peaking beautifully in May. Starting from just 6 hours in January, the sun begins to rise earlier and linger longer, offering 9 hours in February and 11 hours in March. By April, daylight stretches to a refreshing 14 hours, but it truly blossoms in May, where it reaches an impressive 17 hours. This surge heralds the impending midnight sun of June, which boasts 18 hours, before gradually tapering off again into the late summer months. The trend of diminishing light reemerges with September's 12 hours and settles into winter's embrace with just 6 hours returning by December. The rhythm of daylight in Alta showcases the dramatic seasonal changes, highlighting the beauty of each phase in this Arctic haven.
In Alta, Sweden, May ushers in a gentle breeze with an average wind speed of 4.0 m/s (9 mph), making it the calm before the summer gusts. As the year progresses, one can observe a gradual decline in wind speeds from April’s 4.9 m/s (11 mph), indicating a transition toward milder conditions. This trend continues into June, where the average dips further to 3.5 m/s (8 mph), presenting a contrast to the brisk conditions of winter months like January and October, which boast higher averages of 5.2 m/s (12 mph) and 5.8 m/s (13 mph), respectively. Overall, late spring sees a lull in windiness, creating a serene atmosphere perfect for enjoying the emerging summer landscape.
Weather in Alta varies notably across the year, with each month offering distinct climate conditions. This page compares May’s weather to other months in Alta, focusing on differences in temperature, rainfall, humidity, and UV levels.
In comparing the weather of May and January, it's evident that May enjoys significantly milder temperatures, with an average of 9°C (49°F) compared to January's chilly 0°C (33°F). January can see minimum temperatures plummet to -15°C (6°F), whereas May's lows only dip to -2°C (29°F). While both months experience similar levels of precipitation, with May at 50 mm (2.0 in) over 9 days and January at 43 mm (1.7 in) across 10 days, January's higher humidity of 90% adds to the cold's sharpness, compared to May's more comfortable 77%. For a deeper look into January weather specifics, check out Alta weather in January.
When comparing the weather in May and February, notable differences emerge. May features a milder climate, with average temperatures ranging from -2°C (29°F) at night to a pleasant 21°C (69°F) during the day, while February is significantly colder, with average temperatures spanning from -12°C (11°F) to a maximum of 9°C (48°F). Precipitation is slightly higher in May at 50 mm (2.0 in) over 9 days, compared to February's 38 mm (1.5 in), even though both months have the same number of rainy days. Additionally, May's humidity is lower at 77% compared to February's 88%, contributing to a more comfortable atmosphere as spring approaches. For more details about February weather, you can check Alta weather in February.
May typically brings milder temperatures compared to March, with average temperatures rising from 2°C (35°F) in March to a more comfortable 9°C (49°F) in May. While March can see a minimum temperature as low as -10°C (14°F), May's temperatures rarely dip below -2°C (29°F). Precipitation levels are somewhat comparable, with 50 mm (2.0 in) in May and 44 mm (1.7 in) in March, both spread across approximately 9 days. However, humidity in March is slightly higher at 89%, compared to 77% in May, contributing to a cooler, more damp feel during early spring. For a more detailed look at March weather, check out this link: Alta weather in March.
In comparing the weather between April and May, it's clear that May enjoys a milder climate, with minimum temperatures rising from -5°C (24°F) in April to -2°C (29°F). The average temperature also increases to 9°C (49°F) in May, contrasted with April's cooler average of 5°C (40°F). Furthermore, the maximum temperature in May reaches a pleasant 21°C (69°F), significantly higher than April's peak of 17°C (62°F). While both months experience precipitation, May has a higher total of 50 mm (2.0 in) over 9 days compared to April's 25 mm (1.0 in) over 7 days, indicating a wetter end to spring. Humidity levels remain high in both months, though slightly lower in May at 77% compared to 85% in April. For a more detailed look at April weather, you can visit Alta weather in April.
May and June showcase a noticeable shift in weather conditions. In May, temperatures range from a chilly minimum of -2°C (29°F) to a mild maximum of 21°C (69°F), with an average of 9°C (49°F). The month experiences about 50 mm (2.0 in) of precipitation over 9 days, coupled with a high humidity level of 77%. In contrast, June brings warmer temperatures, with a minimum of 7°C (44°F) and a maximum of 23°C (75°F), resulting in an average of 15°C (60°F). The precipitation in June is slightly reduced to 44 mm (1.7 in), occurring over just 7 days, while humidity remains comparable at 76%. For a detailed look at June weather in this region, you can check Alta weather in June.
May and July present distinct weather patterns, showcasing the transition from spring to summer. In May, temperatures range from a chilly -2°C (29°F) at night to a mild 21°C (69°F) during the day, with an average of 9°C (49°F). The month experiences about 50 mm (2.0 in) of precipitation over roughly 9 days, and humidity is relatively high at 77%. In contrast, July is warmer, with nighttime temperatures starting at 9°C (48°F) and peaking at 26°C (80°F), leading to an average of 17°C (64°F). Precipitation slightly increases to 55 mm (2.1 in), also spread over 9 days, but humidity drops slightly to 74%. For a closer look at specific conditions, check out this link: Alta weather in July.
In May, temperatures in Alta typically range from a chilly low of -2°C (29°F) to a comfortable high of 21°C (69°F), with an average temperature of 9°C (49°F). This month experiences around 50 mm (2.0 in) of precipitation over about 9 days, coupled with a humidity level of 77%. In contrast, August sees a significant rise in temperatures, with a minimum of 8°C (47°F), an average of 17°C (63°F), and a maximum of 27°C (81°F). However, it also brings slightly more rainfall, totaling 68 mm (2.7 in) over 12 days, while maintaining the same humidity level of 77%. For more details about the August climate, check out Alta weather in August.
May and September each boast their own unique weather characteristics, though both months present relatively mild temperatures. In May, the minimum temperature dips to -2°C (29°F), with an average of 9°C (49°F) and a maximum of 21°C (69°F). This month sees moderate precipitation of about 50 mm (2.0 in) over 9 days, with humidity levels around 77%. In contrast, September experiences slightly warmer conditions, beginning with a minimum temperature of 3°C (38°F), averaging 13°C (56°F), and reaching a maximum of 22°C (72°F). Precipitation rises slightly to 52 mm (2.0 in) over 10 days, with humidity increasing to 85%. For more detailed insights on September weather, you can check Alta weather in September.
In May, temperatures range from a minimum of -2°C (29°F) to a maximum of 21°C (69°F), with an average of 9°C (49°F). The month sees about 50 mm (2.0 in) of precipitation over 9 days and maintains a humidity level of 77%. In contrast, October experiences cooler temperatures, with a minimum of 0°C (32°F) and a maximum of 16°C (60°F), while the average holds steady at 9°C (48°F). Rainfall increases to 76 mm (3.0 in) over 13 days, and humidity rises slightly to an average of 89%. For more information on the weather in October, you can refer to Alta weather in October.
May and November present contrasting weather patterns. In May, temperatures range from a minimum of -2°C (29°F) to a maximum of 21°C (69°F), with an average of 9°C (49°F). This month typically sees about 50 mm (2.0 in) of precipitation over 9 days and features a humidity level of 77%. In contrast, November is colder, with temperatures dipping lower, featuring a minimum of -7°C (20°F) and a maximum of only 14°C (57°F), averaging at 5°C (41°F). Precipitation remains similar at 50 mm (2.0 in), but it occurs over 11 days, leading to a higher humidity of 90%. For more detailed insights on November's climate, visit Alta weather in November.
May and December present stark contrasts in weather conditions. In May, temperatures range from a minimum of -2°C (29°F) to an average of 9°C (49°F) and can peak at 21°C (69°F), creating a pleasant spring atmosphere. The month sees about 50 mm (2.0 in) of precipitation across 9 days, with humidity levels around 77%. In contrast, December is much colder, with temperatures dropping to a minimum of -10°C (14°F) and an average of just 2°C (35°F), reaching a maximum of 8°C (47°F). It is also a wetter month, with approximately 70 mm (2.8 in) of rainfall spread over 15 days, and higher humidity at 87%. For a detailed look at the weather in December, check out Alta weather in December.
As spring unfolds, May in Alta brings a refreshing shift in weather, characterized by rising temperatures and increased humidity. With the maximum temperature reaching a comfortable 21°C (69°F) and an average of 9°C (49°F), the month stands out compared to the cooler and darker winter months. However, it's also marked by some precipitation, totaling approximately 50 mm over 9 days, hinting at the transition to summer. This combination of warmer days and a slight uptick in moisture rewards residents and visitors alike with the rejuvenating beauty of nature in bloom. For a deeper dive into the unique climate of Alta, check out Alta Climate.