May Weather in Hammarby, Sweden

Last updated: August 27, 2025

May in Hammarby, Sweden, brings a vibrant mix of weather that transitions from the bite of winter to the warmth of early summer. With temperatures ranging from a minimum of -5°C (24°F) to a maximum of 28°C (83°F), the month showcases diverse conditions. The average temperature settles at a mild 10°C (51°F), making it an ideal time for outdoor exploration. However, be prepared for occasional showers, as the area experiences 57 mm (2.3 in) of precipitation over 11 days. The humidity level sits at a comfortable 74%, enhancing the refreshing feel of the spring air as nature awakens in full bloom.

May Temperature in Hammarby

May in Hammarby, Sweden, marks a delightful transition from the harsh winters, offering a breath of freshness as temperatures begin to rise. With a minimum of -5°C (24°F) and an average of 10°C (51°F), the month presents a notable shift towards milder conditions. The maximum reaches a pleasant 28°C (83°F), hinting at the summer warmth just around the corner. This upward trend from the preceding months, characterized by lingering cold temperatures, heralds a time when outdoor activities flourish amidst blooming landscapes. As daylight extends and the chill recedes, May invites both residents and visitors to embrace the vibrant energy of spring in this picturesque Swedish locale.

May Weather in Hammarby: Daily Temperature Highs, Lows, and Averages

The chart illustrates May temperature patterns in Hammarby, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Hammarby, May typically has an average temperature of {2}°C ({3}°F), with highs reaching up to {4}°C ({5}°F) and lows dropping to around {6}°C ({7}°F).
JanFebMarAprMayJunJulAugSepOctNovDec282833405061636053443630
Data source: Temperature data for Hammarby generated using information from the Copernicus Climate Change Service.
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The average of daily temperatures (24 hours) calculated across all days in the month.

May Precipitation in Hammarby

May brings a notable shift in Hammarby's precipitation patterns, with an increase to 57 mm (2.3 in), making it the wettest month so far this year. This uptick is accompanied by 11 days of rainfall, which marks the highest number of precipitation days in any month to date. Unlike the lighter showers of April, which saw only 29 mm of rain over 7 days, May sets the stage for a lush, green landscape, as it transitions into the summer months. Following May, June and July maintain a similar level of rainfall at 70 mm (2.7 in) each, suggesting a trend of sustained moisture that is crucial for the vibrant flora and fauna of the region. As spring gives way to summer, the increased rainfall in May clearly contributes to a more dynamic and lively environment in Hammarby.

May Precipitation Trends in Hammarby

The chart displays monthly precipitation patterns in Hammarby, with values for each month alongside May’s data, which is highlighted for easy comparison. It shows the amount of precipitation, providing insights into how May’s conditions compare to those of other months. In Hammarby, May typically receives around {2} mm ({3} inches) of precipitation spread over approximately {4} days.
JanFebMarAprMayJunJulAugSepOctNovDec363639295770709053884956
Data source: Precipitation data for May generated using information from the Copernicus Climate Change Service.
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May Humidity in Hammarby

In Hammarby, Sweden, May ushers in a refreshing change as humidity drops to a pleasant 74%, marking a significant decline from the frigid winter months when levels peaked at 96% in January. This trend of decreasing humidity continues into June and July, where it stabilizes at 73%. As spring gives way to summer, the atmosphere becomes noticeably more comfortable, encouraging outdoor activities. However, this drop is soon followed by a gradual rise in humidity starting in August, hinting at the approaching autumn with September's 87% and gradually climbing back towards winter's moisture-laden levels. Overall, May serves as a sweet interlude in Hammarby, balancing humidity levels with the emerging warmth of the season.

May Average Humidity in Hammarby

This chart illustrates the average monthly humidity levels in Hammarby, with May’s data highlighted for easy comparison. It shows the fluctuation in humidity throughout the year, helping you understand how conditions vary by season. In May, average humidity in Hammarby is approximately {2}%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec96%93%91%84%74%73%73%78%87%92%94%94%
Data source: Humidity data for May generated using information from the Copernicus Climate Change Service.

May UV Index in Hammarby

In May, the UV Index in Hammarby, Sweden, reaches 5, signaling a moderate level of sun exposure that calls for some caution. As spring unfolds, the burn time shortens to about 30 minutes, highlighting the increasing intensity of the sun compared to earlier months when the UV Index lingered around 1 in January and February. This upward trend continues from April, where the UV Index was at 4. With these increasing levels, it's essential to be mindful of sun safety practices as the days grow warmer and longer. For more detailed insights on the UV Index throughout the year, check out the comprehensive guide here: Hammarby UV Index.

Maximum UV Index Levels in Hammarby for May

The chart shows the monthly maximum UV Index (UVI) for Hammarby in May, representing the highest UV radiation level. The UVI measures the intensity of ultraviolet radiation from the sun, indicating the potential risk of sunburn and UV-related health issues. In May, the maximum UV index in Hammarby typically reaches {2}, which falls under the {3} exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec113457754211
Data source: Hammarby May UVI data generated using information from the Copernicus Climate Change Service.

UV Risk Categories

  •  Extreme (11+): Avoid the sun, stay in shade.
  •  Very High (8-10): Limit sun exposure.
  •  High (6-7): Use SPF 30+ and protective clothing.
  •  Moderate (3-5): Midday shade recommended.
  •  Low (0-2): No protection needed.

May Sunshine in Hammarby

As spring unfolds in Hammarby, Sweden, May shines brightly with an impressive 420 hours of sunshine, marking a peak in the gradual increase that began in January with just 70 hours. This steady rise highlights the transition into summer, where residents and visitors can bask in nearly six hours of sunlight daily. Following the 388 hours recorded in April, May's sunny days are a prelude to June's even more radiant 465 hours. The warmth of spring not only energizes the landscape but also invites the community to embrace outdoor activities, fostering a vibrant atmosphere. The shift from long, dark winter days to the luminous afternoons of May embodies the joyous anticipation of summer ahead in this picturesque Swedish locale.

Monthly Sunshine Duration in Hammarby: May Highlighted

The May sunshine duration represents the total number of hours Hammarby experiences direct sunlight during the month of May, excluding cloudy or obstructed periods. This chart compares the sunshine duration of May with the other months of the year.
JanFebMarAprMayJunJulAugSepOctNovDec70h165h264h368h420h465h475h392h278h196h113h67h
Data source: Hammarby May Sunshine duration data generated using information from the Copernicus Climate Change Service.

Chance of Sun in Hammarby During May

As May rolls into Hammarby, Sweden, the possibility of sunny weather takes a modest dip, with only a 27% chance of sunshine. While this percentage marks a decrease from April's more promising 47%, it is noteworthy that the warming months ahead—especially June and July—bring a marked uptick in sunny days, reaching 41% and 50%, respectively. This trend reveals an interesting dynamic: while May may not deliver precisely the sunshine one might hope for, it serves as a transitional period leading into the summer months where the sun becomes more prevalent. Thus, the changing weather patterns hint at a gradual shift towards brighter days as the seasons progress.

Percentage of Sunny Days in May in Hammarby

The chart illustrates the percentage of sunny days in Hammarby throughout the year, with May highlighted. It highlights the variation in sunshine across each month and provides an overview of the typical frequency of sunny days, offering insights into how often Hammarby experiences clear skies throughout the year.
JanFebMarAprMayJunJulAugSepOctNovDec15%31%36%47%27%41%50%32%25%25%28%25%
Data source: Hammarby May chance of sun data, generated using information from the Copernicus Climate Change Service.

Daylight Hours in Hammarby in May

As spring blossoms into summer in Hammarby, Sweden, the daylight duration experiences a remarkable transformation. Starting with a mere 6 hours in January, the days gradually lengthen, boasting 9 hours of sunlight by February and 11 hours by March. This upward trend accelerates, culminating in April with 14 hours of daylight and reaching its zenith in May with an impressive 17 hours. The splendor of daylight peaks in June and July, holding steady at 18 hours each month, before gradually tapering off as autumn approaches. By August, daylight begins to wane to 15 hours, and further declines continues into September with 12 hours, before plunging into the shorter days of October and November. This rhythmic cycle of daylight not only mirrors the changing seasons but also enhances the seasonal experience in this beautiful Swedish locale.

Average Daylight Hours in Hammarby for May

The chart illustrates the variation in daylight duration in Hammarby throughout the year, with May highlighted. It shows the monthly changes in daylight hours, calculated by summing the hours between sunrise and sunset.
JanFebMarAprMayJunJulAugSepOctNovDec6h 38m9h 4m11h 51m14h 41m17h 21m18h 55m18h 4m15h 35m12h 48m10h7h 21m5h 48m
Data source: Hammarby daylight hours, calculated by summing the hours between sunrise and sunset for each day.

May Winds in Hammarby

In Hammarby, Sweden, May ushers in a gentle breeze with an average wind speed of 2.9 m/s (7 mph), marking a slight decline from the milder conditions of the previous months. This drop aligns with a broader trend observed as spring transitions into summer, where the wind speeds generally soften, hitting their lowest in June and July at 2.7 m/s (6 mph). Interestingly, as the year progresses into the autumn months, wind speeds begin to regain momentum, reaching their peak in October at 4.1 m/s (9 mph). Overall, May exemplifies the calming winds of spring, while hinting at the breezier autumn days to come.

Average May Wind Speed in Hammarby

The chart displays monthly wind speed patterns in Hammarby, with values for each month shown alongside May's data, which is highlighted for easy comparison. It illustrates the average wind speed, offering insights into how May's wind conditions compare to the rest of the year.
JanFebMarAprMayJunJulAugSepOctNovDec3.13.53.63.52.9 m/s2.72.73.23.14.13.33.2
Data source: Hammarby May wind data, generated using information from the Copernicus Climate Change Service.

How May Weather in Hammarby Compares to Other Months

Weather in Hammarby varies notably across the year, with each month offering distinct climate conditions. This page compares May’s weather to other months in Hammarby, focusing on differences in temperature, rainfall, humidity, and UV levels.

The weather in May is significantly warmer and more varied compared to January. May sees temperatures ranging from a minimum of -5°C (24°F) to a pleasant maximum of 28°C (83°F), with an average of 10°C (51°F). In contrast, January features much colder conditions, with temperatures dropping as low as -22°C (-8°F) and only reaching a maximum of 9°C (49°F), averaging around -2°C (28°F). While May experiences more precipitation at 57 mm (2.3 in) over 11 days, January has less at 36 mm (1.4 in) across 8 days, though it is notably more humid with levels at 96%. For a closer look at January specifics, check Hammarby weather in January.

When comparing the weather in May and February, significant differences emerge in both temperature and humidity levels. May experiences a much milder climate, with average temperatures ranging from a minimum of -5°C (24°F) to a maximum of 28°C (83°F), whereas February is notably colder, with temperatures averaging between -17°C (1°F) and 9°C (48°F). Additionally, May brings more pleasant conditions with lower humidity at 74%, compared to February's high humidity of 93%. Precipitation is also more frequent in May, with 57 mm (2.3 in) over 11 days, while February sees 36 mm (1.4 in) over just 8 days. For a closer look at the conditions in February, visit Hammarby weather in February.

In comparing the weather of March and May, a noticeable shift in temperature and conditions is evident. March experiences much colder temperatures, ranging from a minimum of -20°C (-3°F) to a maximum of 18°C (64°F), with an average of 0°C (33°F). In contrast, May showcases a milder climate, with temperatures ranging from a minimum of -5°C (24°F) to a maximum of 28°C (83°F), averaging at a comfortable 10°C (51°F).

Precipitation levels are higher in May, with 57 mm (2.3 in) falling over 11 days, compared to March's 39 mm (1.5 in) over 7 days. Humidity is also higher in March at 91%, while May has a lower humidity level of 74%. For those interested in more detailed weather patterns, you can check out Hammarby weather in March.

In comparing the weather of April and May, it's clear that May brings warmer temperatures and more variability. In April, the minimum temperature drops to a chilling -13°C (9°F), with an average of 4°C (40°F) and a maximum of only 21°C (70°F). In contrast, May exhibits a more pleasant range, starting at a minimum of -5°C (24°F) and peaking at 28°C (83°F) with an average temperature of 10°C (51°F). This significant increase in warmth coincides with an uptick in precipitation, as May sees 57 mm (2.3 in) over 11 days compared to April’s 29 mm (1.1 in) over 7 days. Interestingly, the humidity in April remains slightly higher at 84%, compared to 74% in May. For more detailed insights into April conditions, you can check Hammarby weather in April.

May and June display a notable shift in weather conditions. In May, temperatures range from a minimum of -5°C (24°F) to a maximum of 28°C (83°F), with an average of 10°C (51°F). The month experiences 57 mm (2.3 in) of precipitation over 11 days, combined with a humidity level of 74%. In contrast, June warms up significantly, with temperatures starting at a minimum of 4°C (39°F) and reaching as high as 31°C (88°F), averaging 16°C (61°F). However, this month sees slightly higher rainfall at 70 mm (2.7 in) across 10 days, while humidity remains comparable at 73%. For a closer look at June's weather patterns, you can check Hammarby weather in June.

In May, temperatures range from a chilly -5°C (24°F) at night to a comfortable 28°C (83°F) during the day, with an average of 10°C (51°F). The month sees 57 mm (2.3 in) of precipitation over about 11 days, paired with a relatively high humidity of 74%.

By July, the weather warms considerably, with minimum temperatures rising to 6°C (43°F) and maximums reaching 32°C (90°F), resulting in a higher average temperature of 17°C (63°F). Although July experiences slightly more precipitation at 70 mm (2.7 in) over the same number of rainy days, the humidity remains similar at 73%. For more detailed insights on July's climate, check out Hammarby weather in July.

In May, temperatures can range from a chilly -5°C (24°F) at night to a warm 28°C (83°F) during the day, with an average of 10°C (51°F). The month typically receives 57 mm (2.3 in) of precipitation over 11 days, and the humidity hovers around 74%. In contrast, August experiences milder nighttime temperatures, with a minimum of 3°C (38°F) and a maximum of 30°C (85°F), resulting in a higher average of 16°C (61°F). Precipitation increases to 90 mm (3.5 in) across 13 days, accompanied by slightly higher humidity of 78%. For a closer look at weather specifics in August, you can visit Hammarby weather in August.

May and September exhibit notable differences in weather patterns. In May, temperatures range from a minimum of -5°C (24°F) to a maximum of 28°C (83°F), with an average of 10°C (51°F). This month experiences approximately 57 mm (2.3 in) of precipitation over 11 days, accompanied by a relative humidity of 74%. In contrast, September features a milder temperature range, with minimums at -1°C (31°F) and maximums at 24°C (75°F), averaging around 11°C (53°F). Although September has slightly less precipitation at 53 mm (2.1 in) over 9 days, it boasts a higher humidity level of 87%. For a closer look at conditions during this time, check out Hammarby weather in September.

May and October weather exhibits notable differences, particularly in terms of temperature and humidity. In May, temperatures range from a chilly -5°C (24°F) to a warm 28°C (83°F), with an average around 10°C (51°F). The month experiences around 57 mm (2.3 in) of precipitation over approximately 11 days, and the humidity sits at a comfortable 74%. In contrast, October is colder, with temperatures varying from -5°C (23°F) to a maximum of 20°C (68°F), averaging 7°C (44°F). It also sees increased precipitation at 88 mm (3.5 in) over 13 days and higher humidity at 92%. For those interested in specific weather patterns, Hammarby weather in October provides further insights into the conditions during this month.

May and November present striking contrasts in weather conditions. In May, temperatures range from a chilly -5°C (24°F) at night to a warm 28°C (83°F) during the day, averaging around 10°C (51°F). The month enjoys a fair amount of rainfall, with about 57 mm (2.3 in) over approximately 11 days, and humidity sits at a comfortable 74%. In contrast, November introduces colder temperatures, dipping as low as -12°C (11°F) at night and reaching a maximum of 14°C (58°F), averaging a mere 2°C (36°F). While it sees slightly less precipitation at 49 mm (1.9 in) over 9 days, the humidity is significantly higher at 94%, resulting in a much denser feel to the air. For more insights into November's climate, you can check out Hammarby weather in November.

The weather in May is significantly milder compared to December, with temperatures ranging from a chilly minimum of -5°C (24°F) to a warmer maximum of 28°C (83°F), and an average temperature of 10°C (51°F). In contrast, December sees much colder conditions, with temperatures plummeting to a low of -18°C (-1°F) and an average of -1°C (30°F), while peaking at only 8°C (47°F). Both months experience similar levels of precipitation, with May accumulating 57 mm (2.3 in) over 11 days, and December slightly less at 56 mm (2.2 in) over 13 days, though December’s higher humidity at 94% contrasts sharply with May's more moderate 74%. For a more detailed look at the climate during this month, check out Hammarby weather in December.

Compare Hammarby's Climate with Cities Worldwide

Conclusion: What to Expect From May Weather in Hammarby

As spring fully unfolds in Hammarby, May brings a delightful shift in weather that is noticeably warmer than the preceding months. With temperatures peaking at a pleasant 28°C and an average of 10°C, this month marks the transition from the chill of early spring to more inviting conditions. While you may still encounter some rainy days—11 in total contributing to approximately 57 mm of precipitation—the overall atmosphere becomes increasingly vibrant, with humidity hovering around 74%. This combination of warmth and occasional showers creates a lush, blooming landscape that sets the stage for the summer ahead. For more insights on weather patterns throughout the year, explore Hammarby Climate.