May Weather in Siglufjoerdur, Iceland

Last updated: March 17, 2025

In May, Siglufjörður, Iceland experiences a dynamic climate characterized by a maximum temperature of 12°C (53°F) and an average of 4°C (39°F), dipping to a minimum of -2°C (28°F). This month sees 59 mm (2.3 in) of precipitation over 13 days, contributing to the region's lush and vibrant landscape. With an impressive humidity level of 91%, the air is often crisp and invigorating, embodying the enchanting spirit of Icelandic spring. Whether you’re exploring stunning vistas or enjoying indoor activities, May in Siglufjörður is sure to captivate.

May Temperature in Siglufjoerdur

As May rolls into Siglufjörður, the lingering chill of winter begins to fade, paving the way for a gradual warming trend. With minimum temperatures rising to a brisk -2°C (28°F) and daytime highs reaching a mild 12°C (53°F), locals and visitors alike can finally enjoy the burgeoning scenes of spring. The average temperature climbs to 4°C (39°F), suggesting a delightful transition as the days become longer and more vibrant. This month marks a turning point in the year; the icy grip of winter loosens its hold, encouraging nature to awaken and showcase the breathtaking beauty of Iceland, enticing adventurers to explore this enchanting landscape.

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

The chart illustrates May temperature patterns in Siglufjoerdur, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends.
JanFebMarAprMayJunJulAugSepOctNovDec333434363944474845413635
Data source: Temperature data for Siglufjoerdur 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 Siglufjoerdur

In May, Siglufjörður experiences a notable drop in precipitation, with 59 mm (2.3 in) recorded, making it one of the drier months of the year. This decrease from the heavier rains seen earlier in the spring reflects a shift in the seasonal weather pattern. The region enjoys 13 days of precipitation, which is less frequent compared to the 14 days in April, indicating the potential arrival of sunnier days. As the month progresses, residents and visitors alike anticipate the lush greenery that follows the rain, making May a transitional month where the landscape begins to shimmer with vibrant colors.

May Precipitation Trends in Siglufjoerdur

The chart displays monthly precipitation patterns in Siglufjoerdur, 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.
JanFebMarAprMayJunJulAugSepOctNovDec1181041017959728884159147116138
Data source: Precipitation data for May generated using information from the Copernicus Climate Change Service.
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May Humidity in Siglufjoerdur

In Siglufjörður, Iceland, the month of May welcomes a slight dip in humidity to 91%, marking a transition as the spring season begins to wane. This figure is marginally lower than the preceding months, where humidity levels hovered between 92% and 94% from January through April. As summer unfolds, the overall trend shows a gradual decrease, with June expected to offer even drier conditions at 90%. This consistent humidity pattern not only reflects the unique coastal climate of Siglufjörður but also sets the stage for the warmer, yet still moist, months ahead, as humidity levels stabilize around 90-91% through the summer.

May Average Humidity in Siglufjoerdur

This chart illustrates the average monthly humidity levels in Siglufjoerdur, with May's data highlighted for easy comparison. It shows the fluctuation in humidity throughout the year, allowing you to see how May's humidity levels compare to other months.
JanFebMarAprMayJunJulAugSepOctNovDec92%93%94%93%91%90%91%91%91%90%90%90%
Data source: Humidity data for May generated using information from the Copernicus Climate Change Service.

May UV Index in Siglufjoerdur

As the days grow longer and sunnier, May in Siglufjoerdur sees an increase in UV exposure, with a UV Index of 5, placing it in the moderate exposure category. This marks a gentle rise from April's Index of 3, allowing for about 30 minutes of unprotected sun exposure before a burn occurs. The shift from winter's low indices highlights the transition into warmer months, making it essential for outdoor enthusiasts to take precautions. As June approaches with even higher values, it's a perfect reminder to stay informed and protected against UV rays. For more details on the UV Index throughout the year, visit Siglufjoerdur UV Index.

Maximum UV Index Levels in Siglufjoerdur for May

The chart shows the monthly maximum UV Index (UVI) for Siglufjoerdur 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.
JanFebMarAprMayJunJulAugSepOctNovDec112356543211
Data source: Siglufjoerdur 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 Siglufjoerdur

In the heart of Siglufjoerdur, Iceland, May shines brightly as a transition moment from the lingering darkness of winter to the vibrant summer days. With 314 hours of sunshine, May marks a significant leap from February's mere 59 hours, showcasing a delightful trend toward longer, sun-soaked days. The increase in daylight hours continues from April's 254 hours, hinting at the joyous arrival of summer. As the sunlight peaks in May, it sets the stage for the upcoming months—June and July—when the sun graces the region with a generous bounty of nearly 300 hours each. By August, the sun remains plentiful, albeit slightly decreased to 270 hours, as the days gradually prepare for the return to darkness later in the year. May not only illuminates Siglufjoerdur with an impressive amount of sunshine but also celebrates the gradual emergence of longer, brighter days that characterizes this enchanting Icelandic locale.

Monthly Sunshine Duration in Siglufjoerdur: May Highlighted

The May sunshine duration represents the total number of hours Siglufjoerdur 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.
JanFebMarAprMayJunJulAugSepOctNovDec12h59h160h254h314h284h283h270h159h90h37h3h
Data source: Siglufjoerdur May Sunshine duration data generated using information from the Copernicus Climate Change Service.

Chance of Sun in Siglufjoerdur During May

As spring blossoms in Siglufjoerdur, Iceland, the likelihood of sunny weather begins to steadily rise, peaking in May with a notable 35% chance of sunshine. This marks a significant increase from the early months of the year, where the chance of sun hovers around a mere 20% in January, gradually climbing to 27% in April. Following May, the prospects of sunny days dip slightly in June and July, settled around 28% and 27% respectively. This trend demonstrates the gradual transition from the long, dark winter months to the brighter, more inviting days of late spring. Thus, May emerges as a particularly promising time to enjoy the vibrant beauty of Siglufjoerdur under the sun's warm embrace.

Percentage of Sunny Days in May in Siglufjoerdur

The chart illustrates the percentage of sunny days in Siglufjoerdur 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 Siglufjoerdur experiences clear skies throughout the year.
JanFebMarAprMayJunJulAugSepOctNovDec20%17%16%27%35%28%27%24%14%15%19%25%
Data source: Siglufjoerdur May chance of sun data, generated using information from the Copernicus Climate Change Service.

Daylight Hours in Siglufjoerdur in May

In Siglufjörður, Iceland, the evolution of daylight throughout the year presents a captivating narrative of seasonal change. As the longest winter nights give way to brighter days, January's mere 4 hours of daylight dramatically shifts to 19 hours by May, marking a significant spring awakening. This growth continues to peak in June with a breathtaking 23 hours of daylight, allowing the breathtaking landscapes to bask in the sun's embrace. However, as summer wanes, the days gradually shorten — July still enjoys a generous 20 hours, but by August, the sunlight begins to recede to 16 hours. The progression towards winter is a gentle reminder, as September dips to 13 hours, before plunging into the cold depths of October with 9 hours and ultimately the dimmer days of November and December, where daylight lingers for just 5 and 2 hours, respectively. This rhythmic dance of light and dark beautifully encapsulates the dynamic nature of life in this remote Icelandic fjord, revealing a striking juxtaposition between long summer days and the stark brevity of winter.

Average Daylight Hours in Siglufjoerdur for May

The chart illustrates the variation in daylight duration in Siglufjoerdur throughout the year, with May highlighted. It shows the monthly changes in daylight hours, calculated by summing the hours between sunrise and sunset.
JanFebMarAprMayJunJulAugSepOctNovDec4h 33m8h 11m11h 49m15h 30m19h 28m23h 33m20h 55m16h 42m13h 1m9h 24m5h 42m2h 56m
Data source: Siglufjoerdur daylight hours, calculated by summing the hours between sunrise and sunset for each day.

May Winds in Siglufjoerdur

In May, Siglufjörður experiences a notable shift in wind conditions, with an average speed of 5.8 m/s (13 mph), marking a decline from the more brisk winds of the earlier months. Following the gustier March and January, this reduction in wind speed paves the way for a calmer spring atmosphere. As summer approaches, the trend continues with June and July witnessing even lighter breezes, dropping to 6.2 m/s (14 mph) and 4.5 m/s (10 mph), respectively. This seasonal transition highlights a comforting shift, as locals and visitors alike can enjoy the stunning landscapes of Iceland with a gentle wind rather than the relentless gusts typical of winter and early spring.

Average May Wind Speed in Siglufjoerdur

The chart displays monthly wind speed patterns in Siglufjoerdur, 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.
JanFebMarAprMayJunJulAugSepOctNovDec9.17.29.36.65.8 m/s6.24.54.17.79.38.16.8
Data source: Siglufjoerdur May wind data, generated using information from the Copernicus Climate Change Service.

How May Weather in Siglufjoerdur Compares to Other Months

The weather in Siglufjoerdur changes throughout the year, offering a unique experience in each season. Below is a month-by-month comparison of May's weather with other months, highlighting differences in temperature, precipitation, and other key factors. Click on each section to discover seasonal trends in Siglufjoerdur and find detailed weather information for every month.

In comparing the weather of May and January, it is clear that May tends to be milder, with average temperatures ranging from -2°C (28°F) to a maximum of 12°C (53°F), while January experiences colder conditions, with temperatures varying from -8°C (18°F) to 9°C (48°F). May also boasts a slightly lower precipitation level of 59 mm (2.3 in) over 13 days, compared to January’s 118 mm (4.6 in) across 19 days, indicating that January is typically wetter. Additionally, both months share high humidity levels, with January reaching 92% and May close behind at 91%. For a more detailed look at January weather, you can visit Siglufjoerdur weather in January.

In comparing the weather conditions between May and February, we see a noticeable shift in temperature and precipitation patterns. May tends to be milder, with average temperatures ranging from a minimum of -2°C (28°F) to a maximum of 12°C (53°F), while February is cooler, featuring an average that spans from -5°C (23°F) to a maximum of 9°C (48°F). Precipitation in February is also significantly higher at 104 mm (4.1 in), spread over 17 days, compared to May's 59 mm (2.3 in) over 13 days. Additionally, both months experience high humidity levels, with February slightly higher at 93% versus May’s 91%. For a closer look at February weather specifics, you can visit Siglufjoerdur weather in February.

In comparing the weather between March and May, we can see notable differences in temperature and precipitation. May experiences milder conditions, with average temperatures ranging from a minimum of -2°C (28°F) to a maximum of 12°C (53°F), while March's temperatures are lower, with averages between -8°C (19°F) and 8°C (46°F). Additionally, May has a considerably lower precipitation level of 59 mm (2.3 in) spread over 13 days compared to March's 101 mm (4.0 in) over 19 days. Humidity levels remain high in both months, with March at 94% and May slightly lower at 91%. For those looking to explore the weather specifics in March, you can find more detailed information Siglufjoerdur weather in March.

In comparing the weather between April and May, it is evident that May offers slightly milder temperatures, with a minimum of -2°C (28°F), compared to April’s colder minimum of -8°C (18°F). The average temperature in May rises to 4°C (39°F), while April remains cooler at 2°C (36°F). Additionally, May experiences a maximum temperature of 12°C (53°F), in contrast to April's highest of 8°C (47°F). However, April tends to be wetter, receiving 79 mm (3.1 in) of precipitation over 14 days, compared to May's 59 mm (2.3 in) over 13 days. Both months have similar humidity levels, with May at 91% and April at 92%. For more detailed information, check out Siglufjoerdur weather in April.

May and June showcase a gradual transition in weather conditions. In May, temperatures range from a chilly minimum of -2°C (28°F) to a maximum of 12°C (53°F), with an average of 4°C (39°F). The month experiences a significant amount of precipitation, totaling 59 mm (2.3 in) over 13 days, coupled with high humidity levels at 91%. By June, temperatures rise slightly, with a minimum of 2°C (35°F), an average of 7°C (44°F), and a maximum of 13°C (56°F). Precipitation increases as well, with June recording 72 mm (2.8 in) across 15 days, and humidity remains high at 90%. This comparison highlights how June, while still cool and damp, offers a slight warming trend compared to the lingering chill of May. For more details, you can check the Siglufjoerdur weather in June.

In comparing the weather between May and July, we observe that July is generally warmer, with average temperatures rising from 4°C (39°F) in May to 9°C (48°F) in July. While both months experience high humidity levels of around 91%, July sees a slight increase in precipitation, with 88 mm (3.5 in) over 15 days compared to May's 59 mm (2.3 in) over 13 days. This indicates that July not only brings higher temperatures but also slightly more rainfall, making it a wetter month overall. For more detailed insights into July's weather, you can refer to Siglufjoerdur weather in July.

May and August exhibit distinct weather patterns, showcasing the transition from early spring to late summer. In May, temperatures range from a chilly minimum of -2°C (28°F) to a maximum of 12°C (53°F), with an average of 4°C (39°F). This month experiences a total precipitation of 59 mm (2.3 in) over 13 days, maintaining a high humidity of 91%. In contrast, August sees a more moderate temperature range, with a minimum of 5°C (41°F) and a maximum of 17°C (63°F), averaging 9°C (48°F). Precipitation increases to 84 mm (3.3 in), still over 13 days, while humidity remains constant at 91%. For more detailed information on the weather in August, you can visit Siglufjoerdur weather in August.

May and September both feature cool temperatures and high humidity, but they present distinct weather patterns. In May, temperatures range from a minimum of -2°C (28°F) to a maximum of 12°C (53°F), with an average of 4°C (39°F) and 59 mm (2.3 in) of precipitation spread over about 13 days. In contrast, September sees slightly higher temperatures, with a minimum of 1°C (35°F) and a maximum of 13°C (56°F), averaging 7°C (46°F). However, it experiences significantly more rainfall, totaling 159 mm (6.3 in) over approximately 19 days. This increase in precipitation in September may contribute to a wetter atmosphere despite both months maintaining a consistent humidity level of 91%. For a closer look at September weather, visit Siglufjoerdur weather in September.

In comparing the weather of May and October, both months share a similar minimum temperature of around -2°C (28°F). However, May experiences slightly milder average temperatures of 4°C (39°F), compared to October's average of 5°C (41°F). While May typically has a maximum of 12°C (53°F), October's highest temperature reaches only 9°C (49°F). Precipitation also sees a notable increase in October with 147 mm (5.8 in) over 20 days, in contrast to May's 59 mm (2.3 in) across 13 days. The humidity remains quite high in both months, with May at 91% and October at 90%, indicating a generally damp atmosphere. For more specific insights into October weather in the area, you can refer to Siglufjoerdur weather in October.

May and November exhibit distinct weather patterns, reflecting the transition between spring and winter months. In May, temperatures start to warm up, with averages around 4°C (39°F) and a maximum of 12°C (53°F), accompanied by 59 mm (2.3 in) of precipitation over 13 days. The humidity remains high at 91%, giving a fresh but damp feel to the air.

In contrast, November experiences slightly cooler conditions, with an average temperature of 2°C (37°F) and a maximum of 10°C (49°F). It is also wetter, as the month receives 116 mm (4.6 in) of precipitation over 18 days, coupled with a humidity level of 90%. For more specific information about weather during this time, you can check Siglufjoerdur weather in November. Overall, while both months are characterized by chilly temperatures and significant precipitation, November tends to be slightly colder and wetter than May.

In comparing the weather between May and December, May tends to be slightly milder, with average temperatures ranging from -2°C (28°F) to 12°C (53°F) and a total precipitation of 59 mm (2.3 in) over about 13 days. The humidity is relatively high at 91%, making the air feel quite damp. In contrast, December typically sees colder temperatures, with an average ranging from -5°C (24°F) to 10°C (50°F) and significantly higher precipitation levels at 138 mm (5.4 in) spread across approximately 20 days. The humidity during December is slightly lower at 90%, but the weather remains quite chilly and wet. For a closer look at what December entails, check out Siglufjoerdur weather in December.

Compare Siglufjoerdur's Climate with Cities Worldwide

Conclusion: What to Expect From May Weather in Siglufjoerdur

As May wraps up the cooler spring days in Siglufjoerdur, it slowly transitions into a more temperate climate compared to the harshness of winter. With temperatures starting to sway into the double digits and a notable increase in both humidity and precipitation, the arrival of this month hints at the blossoming beauty of late spring. While the landscape begins to awaken, the 13 days of rain remind visitors that unpredictability still lingers in the air. Overall, May offers a unique blend of crispness and greenery, a stark contrast to the depths of winter and a tantalizing preview of summer's warmth. For a deep dive into the region's climate, visit Siglufjoerdur Climate.