Last updated: August 27, 2025
In Harstad, Norway, May unveils a diverse climate, where temperatures range from a brisk -6°C (22°F) to a pleasant 22°C (71°F). The average temperature hovers around a cool 6°C (42°F), setting the stage for a refreshing spring ambiance. May also brings 85 mm (3.4 in) of precipitation spread over 15 days, contributing to the lush greenery of the region. With an average humidity level of 77%, the month presents a unique blend of crisp air and occasional showers, making it a perfect time for nature enthusiasts to explore the stunning landscapes of this Norwegian gem.
In May, Harstad, Norway, begins its transition from the chill of winter to the warmth of summer. The temperatures reflect this shift, with a minimum of -6°C (22°F) and an average of 6°C (42°F), climbing to a pleasant maximum of 22°C (71°F). These figures illustrate a significant departure from the preceding months, where temperatures lingered well below freezing. As the days grow longer and the snow melts away, the vibrant Norwegian landscapes awaken, making May an ideal time to explore the region, where you can truly experience the beauty of nature as it bursts into life.
In Harstad, Norway, May marks a noticeable shift in the precipitation landscape, with an average rainfall of 85 mm (3.4 in) over 15 days. This amount is a dip from the wetter months preceding it, such as March, which recorded 136 mm (5.4 in), showcasing the trend of diminishing rainfall as spring transitions into summer. May’s milder precipitation levels suggest a gradual easing into the drier months ahead, which culminates in a relatively low 101 mm (4.0 in) in July. Interestingly, this month balances the scale, neither too dry nor excessively wet, providing a refreshing interlude before the higher summer precipitation peaks in August. Overall, May serves as a bridge of moderate rain, setting the stage for the warmer and often rainier days to follow.
In May, the humidity in Harstad, Norway drops to 77%, marking a clear shift from the winter months, when moisture levels hovered around 89% in January. This decline suggests a transition into a drier season, as April's humidity also decreased to 83%. Following May, humidity begins to rise again in June to 82%, indicating the onset of summer. Overall, the trend shows a distinct fluctuation throughout the year, with the highest levels of humidity occurring in the colder months and a noticeable dip in late spring, making May a brief respite before the humidity rises again for the summer months.
As spring blossoms into May, Harstad, Norway, experiences a noticeable rise in UV Index levels, climbing to 4, which places it in the moderate exposure category. This marks a shift from the lower indices of the previous months, reflecting the growing strength of the sun as summer approaches. With a burn time of just 30 minutes, it's important for residents and visitors alike to be mindful of sun safety during this time. While the early months of the year maintained a low exposure level with a UV Index of 1, the transition through April’s UV Index of 3 sets the stage for May's increased intensity. As you enjoy the longer days and warmer weather, remember to take necessary precautions to protect your skin. For continued updates on sun exposure, be sure to check the Harstad UV Index.
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In May, Harstad, Norway, basks in the glorious embrace of 455 hours of sunshine, marking a vibrant peak in the sunlit spectrum after a long, dark winter. As the days stretch longer, the increase from April's 340 hours showcases a remarkable transformation, reflecting the awakening of nature and the spirited arrival of summer. This trend continues as June and July approach, each boasting even more sunshine with 462 and 473 hours, respectively. The gradual climb in daylight from the frigid 16 hours in January to the sunny heights of May captures the essence of Harstad's seasonal shift, inviting residents and visitors alike to revel in the magic of the midnight sun.
In Harstad, Norway, the quest for sunny weather in May reveals an interesting trend as the region transitions from the chilly winter months to the gentle warmth of late spring. While the chance of sun in May sits at 24%, this is a moderate rise from the lower percentages seen in the winter months, such as a mere 19% in both January and March. April, often a precursor to sunnier times, offers a slightly better 27% chance, nudging toward the more favorable conditions ahead. However, May's outlook suggests that while longer daylight hours may boost spirits, the skies still hold on to some clouds. As summer approaches in June, the likelihood of sunshine increases only slightly to 25%, indicating that Harstad's weather can remain unpredictable, making each sunny day a welcomed surprise in the heart of spring.
In Harstad, Norway, the progression of daylight duration throughout the year reveals a captivating transformation from the depths of winter to the heights of summer. January begins with a mere 5 hours of sunlight, gradually increasing to 7 hours in February and jumping to 11 hours by March, signaling the approach of spring. As the days warm and lengthen, April offers a noticeable leap to 16 hours of daylight, paving the way for May, where the sun graces the sky for an impressive 21 hours. This trend continues seamlessly into June, when the sun shines for an astounding 24 hours, creating a continuous day where night feels almost non-existent. However, as summer wanes, the daylight begins to recede; July offers 23 hours, which drops to 17 hours in August and further decreases to 13 hours by September. The descent continues through the fall, with October providing 9 hours, and the bleakness of November and December, where daylight dwindles to a stark 0 hours in the heart of winter. This rhythmic ebb and flow of light strikingly reflects the seasonal changes in this Arctic region.
In May, Harstad experiences a gentle breeze with an average wind speed of 2.6 m/s (6 mph), marking a subtle decline from the stronger winds of the previous months. This dip reflects a seasonal trend, as the wind speeds in late spring tend to soften, transitioning from the more brisk conditions of early spring. Compared to the wind speeds of 3.2 m/s (7 mph) in March and April, May's winds invite a serene ambiance, perfect for outdoor activities. As summer approaches, wind speeds gradually rise again, hinting at the lively breezes that will accompany the longer days ahead. Overall, May's winds present a calm interlude, balancing the vigor of earlier months with the tranquility of late spring.
Weather in Harstad varies notably across the year, with each month offering distinct climate conditions. This page compares May’s weather to other months in Harstad, focusing on differences in temperature, rainfall, humidity, and UV levels.
In comparing May and January weather, notable differences emerge in both temperature and conditions. May experiences a milder temperature range, with a minimum of -6°C (22°F) and a maximum of 22°C (71°F), leading to an average of 6°C (42°F). In contrast, January is significantly colder, featuring a minimum of -24°C (-11°F) and a maximum of 8°C (46°F), resulting in an average of -5°C (24°F). Precipitation levels are somewhat similar, with January receiving 98 mm (3.9 in) over 14 days and May seeing 85 mm (3.4 in) across 15 days; however, January's humidity stands higher at 89% compared to May's 77%. For more details, visit Harstad weather in January.
When comparing the weather in May and February, it's clear that May offers a significant increase in temperature and a more moderate climate. In February, temperatures can drop as low as -20°C (-4°F), with an average of -5°C (22°F) and highs reaching only 7°C (45°F). In contrast, May features a wider temperature range, with minimums of -6°C (22°F) and pleasant maximums of up to 22°C (71°F).
February experiences heavier precipitation at 107 mm (4.2 in) over 14 days, compared to May's 85 mm (3.4 in) over 15 days, although May has slightly lower humidity at 77% versus February's 88%. For a more detailed look, check out Harstad weather in February.
The comparison of weather in May and March reveals significant differences in temperature and precipitation. In May, the temperatures range from a minimum of -6°C (22°F) to a comfortable average of 6°C (42°F), peaking at 22°C (71°F). In contrast, March experiences much colder conditions, with temperatures varying from a frigid minimum of -21°C (-6°F) to an average of -3°C (28°F) and a maximum of only 8°C (46°F). Precipitation is notably higher in March, totaling 136 mm (5.4 in) over 19 days, compared to May's 85 mm (3.4 in) spread over 15 days. Humidity levels also differ slightly, standing at 85% in March and 77% in May. For more detailed insights into March weather, you can visit Harstad weather in March.
The weather in May shows a noticeable improvement compared to April, with higher average temperatures rising from 1°C (34°F) in April to 6°C (42°F) in May. While April experienced colder nights with a minimum temperature of -12°C (11°F), May's minimum temperature is milder at -6°C (22°F). Precipitation in May is slightly lower at 85 mm (3.4 in) over 15 days, compared to April’s 100 mm (3.9 in) over 18 days, suggesting drier conditions as spring progresses. Humidity also decreases from 83% in April to 77% in May, indicating a shift towards more comfortable weather. For a closer look at the weather conditions in April, you can refer to Harstad weather in April.
May and June present a gradual shift in weather patterns, characterized by slightly warmer temperatures and increased precipitation. In May, temperatures range from a chilly minimum of -6°C (22°F) to a comfortable maximum of 22°C (71°F), with an average of 6°C (42°F). The month experiences 15 days of precipitation, accumulating 85 mm (3.4 in) while maintaining a humidity level of 77%. In contrast, June sees a higher average temperature of 10°C (51°F), with minimum and maximum temperatures ranging from 1°C (34°F) to 23°C (74°F). This month also brings more rain, totaling 117 mm (4.6 in) over 17 days and rising humidity to 82%. For a closer look at June weather trends, visit Harstad weather in June.
May and July present a striking contrast in weather patterns. In May, temperatures range from a chilly minimum of -6°C (22°F) to a pleasant average of 6°C (42°F) and can reach up to 22°C (71°F). Meanwhile, July experiences significantly warmer conditions, with minimum temperatures starting at 6°C (43°F) and averaging around 13°C (55°F), reaching a high of 28°C (82°F). Additionally, May sees a substantial amount of rainfall, totaling 85 mm (3.4 in) over 15 days, whereas July receives even more precipitation at 101 mm (4.0 in) across 13 days, reflecting its slightly more humid atmosphere with 83% humidity compared to May's 77%. For more specific details about July's weather, you can visit Harstad weather in July.
In May, the weather features a broader temperature range with minimums dipping to -6°C (22°F) and maximums reaching 22°C (71°F), resulting in an average temperature of 6°C (42°F). This month also sees 85 mm (3.4 in) of precipitation spread across 15 days, accompanied by a humidity level of 77%.
In contrast, August exhibits milder minimum temperatures of 4°C (40°F) and higher maximums at 27°C (81°F), leading to an average temperature of 12°C (54°F). Precipitation increases to 127 mm (5.0 in) over 20 days, with humidity slightly higher at 84%. This shift reflects a transition from the cooler spring conditions of May to the warmer, more humid environment experienced in August. For more details, you can check the Harstad weather in August.
When comparing the weather in May and September, we see distinct differences that reflect the transition from spring to autumn. In May, temperatures range from a chilly minimum of -6°C (22°F) to a pleasant maximum of 22°C (71°F), with an average temperature of 6°C (42°F) and about 85 mm (3.4 in) of precipitation over 15 days. The humidity sits at 77%, contributing to the refreshing feel of spring.
In contrast, September experiences a cooler climate, with temperatures ranging from a minimum of -1°C (31°F) to a maximum of 21°C (70°F) and an average of 9°C (48°F). September tends to be wetter, receiving around 130 mm (5.1 in) of precipitation on 17 days, while humidity rises slightly to 88%. For a more detailed look at weather patterns and conditions during this month, you can check Harstad weather in September. Overall, May showcases the warmth and vibrant growth of spring, while September introduces cooler temperatures and increased rainfall as autumn sets in.
May and October exhibit distinct weather patterns, reflecting the transition between spring and autumn. In May, temperatures range from a minimum of -6°C (22°F) to a maximum of 22°C (71°F), with an average of 6°C (42°F). The month sees approximately 85 mm (3.4 in) of precipitation over 15 days and maintains a humidity of 77%. Conversely, October is slightly cooler, with temperatures dropping to a minimum of -7°C (20°F) and peaking at 17°C (62°F), averaging around 4°C (39°F). This month tends to be wetter, receiving about 103 mm (4.0 in) of rain across 16 days, and the humidity rises to 88%. For more details, visit Harstad weather in October.
May and November present strikingly different weather conditions. In May, temperatures range from a minimum of -6°C (22°F) to a pleasant maximum of 22°C (71°F), with an average of 6°C (42°F). The month receives about 85 mm (3.4 in) of precipitation over 15 days, and humidity levels sit at 77%. In stark contrast, November is much colder, with temperatures dipping as low as -20°C (-4°F) and peaking at only 10°C (51°F), averaging around 0°C (33°F). This month sees an increase in precipitation to 109 mm (4.3 in) spread across 19 days, accompanied by higher humidity at 87%. For a more detailed look at November's weather, you can explore Harstad weather in November.
May and December present stark contrasts in weather. In May, temperatures range from a chilly -6°C (22°F) at night to a comfortable 22°C (71°F) during the day, with an average of 6°C (42°F). The month experiences 85 mm (3.4 in) of precipitation over approximately 15 days, accompanied by a humidity level of 77%. In contrast, December is much colder, with nighttime lows plummeting to -19°C (-2°F) and daytime highs only reaching up to 8°C (46°F), averaging -3°C (26°F). Precipitation increases slightly to 97 mm (3.8 in) across 16 days, and humidity rises to 87%. For more specifics on December’s weather, check out Harstad weather in December.
May in Harstad brings a refreshing shift from the lingering chill of winter, with temperatures gradually rising and the landscape coming alive. While the average temperature hovers around a cool 6°C, it's not uncommon to experience warmer days, peaking at a pleasant 22°C. The month sees a fair share of precipitation, with approximately 15 days of rain contributing to the lush greenery. With an average humidity of 77%, May feels wetter but also heralds the gradual transition to summer. For those curious about the broader climate patterns in the region, visit Harstad Climate for more insights.