May Weather in Mosfellsbaer, Iceland

Last updated: March 17, 2025

May in Mosfellsbær, Iceland brings a delightful yet variable climate, with temperatures ranging from a maximum of 16°C (62°F) to a minimum of -4°C (25°F). The month averages a cool 7°C (44°F), offering a refreshing backdrop for outdoor exploration. However, be prepared for the frequent showers as precipitation totals reach 118 mm (4.6 in) over 18 days, contributing to the lush greenery of the landscape. With an 85% humidity level, the air feels moist and invigorating, making May a unique blend of chilly breezes and vibrant nature in this stunning Icelandic locale.

May Temperature in Mosfellsbaer

In May, Mosfellsbær, Iceland, begins to shed the winter chill, ushering in a refreshing transition with temperatures that range from a minimum of -4°C (25°F) to a pleasant maximum of 16°C (62°F). As the average temperature rises to 7°C (44°F), the nascent warmth signals the arrival of spring, moving away from the icy grips of April, which had seen lows of -10°C (15°F). This month showcases a significant leap in daytime temperatures, encouraging outdoor activities and a burst of greenery as nature awakens. The gradual warming trend continues into June, making May a delightful precursor to the milder summer months in this stunning Icelandic landscape.

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

The chart illustrates May temperature patterns in Mosfellsbaer, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends.
JanFebMarAprMayJunJulAugSepOctNovDec303133394449525246413431
Data source: Temperature data for Mosfellsbaer 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 Mosfellsbaer

In May, Mosfellsbær experiences a notable blend of consistent moisture and increasing warmth as spring advances towards summer. With 118 mm (4.6 in) of precipitation over 18 days, May mirrors January's rainfall yet stands out as one of the wetter months of the season. This trend of steady rainfall provides a lush backdrop for the natural beauty of the area, supporting vibrant plant growth as flora awakens. Following the wettest months of winter and the transitional April showers, May sets the stage for a balance of sun and rain, hinting at the drier spell that typically follows in June, where precipitation dips to 94 mm. Overall, May encapsulates the essence of Icelandic spring, marked by both frequent rain showers and the promise of brighter days ahead.

May Precipitation Trends in Mosfellsbaer

The chart displays monthly precipitation patterns in Mosfellsbaer, 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.
JanFebMarAprMayJunJulAugSepOctNovDec11813110612311894768316394105107
Data source: Precipitation data for May generated using information from the Copernicus Climate Change Service.
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May Humidity in Mosfellsbaer

In May, Mosfellsbær, Iceland, experiences a noticeable decline in humidity, dropping to 85%, which marks the beginning of a gradual decrease as the year progresses. This decline follows the lush, damp months of winter and early spring, where humidity levels hover around 94% to 96%. As the warmth of summer approaches, humidity continues to dwindle, reaching its low of 81% in June before climbing again in the later months. This trend highlights a transition from the cold, moisture-laden atmosphere of early months to the drier, warmer conditions of summer—an essential characteristic of Iceland's dynamic climate.

May Average Humidity in Mosfellsbaer

This chart illustrates the average monthly humidity levels in Mosfellsbaer, 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.
JanFebMarAprMayJunJulAugSepOctNovDec96%95%94%87%85%81%86%88%92%93%94%95%
Data source: Humidity data for May generated using information from the Copernicus Climate Change Service.

May UV Index in Mosfellsbaer

As spring blooms into summer in Mosfellsbaer, May marks a noticeable shift in the UV Index, rising to 5 with a moderate exposure category. This increase reflects a trend seen in the months leading up to summer, where UV levels escalate from a low of 1 in January and February, gradually reaching 4 by April. With a burn time of 30 minutes, it's essential for residents and visitors to be mindful of their sun exposure in May, as the sun's intensity can be deceiving. As we look ahead to June, the UV Index is expected to peak at 6, indicating high UV levels. For those planning outdoor activities, staying informed is key; you can track these changes more closely by visiting Mosfellsbaer UV Index.

Maximum UV Index Levels in Mosfellsbaer for May

The chart shows the monthly maximum UV Index (UVI) for Mosfellsbaer 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.
JanFebMarAprMayJunJulAugSepOctNovDec112456643211
Data source: Mosfellsbaer 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 Mosfellsbaer

May brings a radiant burst of sunshine to Mosfellsbær, Iceland, with 334 hours of daylight, marking a significant peak in the annual sunshine hours. This month stands out as a striking contrast to the dimly lit winter months, where January and February barely muster a combined total of 114 hours. As spring unfolds, the days grow longer, and the number of sunshine hours swells dramatically from 184 in March to 211 in April, laying the foundation for May's luminous embrace. Following May, the sun continues to shine generously in June and July, although there is a gradual decrease, with 308 and 307 hours, respectively. As the summer months transition into autumn, the daylight hours decline, reminding us of the cyclical nature of light in this stunning Icelandic locale.

Monthly Sunshine Duration in Mosfellsbaer: May Highlighted

The May sunshine duration represents the total number of hours Mosfellsbaer 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.
JanFebMarAprMayJunJulAugSepOctNovDec30h84h184h211h334h308h307h282h181h131h67h24h
Data source: Mosfellsbaer May Sunshine duration data generated using information from the Copernicus Climate Change Service.

Chance of Sun in Mosfellsbaer During May

As winter gives way to spring, the likelihood of sunny weather in Mosfellsbær takes a noticeable turn. With the chance of sun in May soaring to 44%, it's a significant leap from the preceding months, where percentages hover below 30%. This trend marks May as a prime time for enjoying the outdoors, as the skies begin to clear and the days grow longer. While June through August may not promise much sunshine, with chances dropping to as low as 10%, May stands out as a bright spot in an otherwise cloudy sequence, inviting locals and visitors alike to revel in the beauty of Iceland's blossoming landscapes.

Percentage of Sunny Days in May in Mosfellsbaer

The chart illustrates the percentage of sunny days in Mosfellsbaer 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 Mosfellsbaer experiences clear skies throughout the year.
JanFebMarAprMayJunJulAugSepOctNovDec30%17%14%24%44%14%10%8%12%24%19%17%
Data source: Mosfellsbaer May chance of sun data, generated using information from the Copernicus Climate Change Service.

Daylight Hours in Mosfellsbaer in May

In Mosfellsbær, Iceland, the transformation of daylight hours is a mesmerizing journey through the seasons. January begins with just 5 hours of daylight, gradually increasing to 8 hours in February and reaching 11 hours by March. As spring unfolds, daylight expands dramatically to 15 hours in April, culminating in a glorious 18 hours by May. This trend continues into June, where the sun graces the sky for a remarkable 20 hours, the peak of the year. However, as summer fades, the daylight begins to wane, dropping to 19 hours in July and gently decreasing to 16 hours in August. By September, daylight recedes to 12 hours, before continuing its descent through the autumn months, rounding out the year with only 4 hours in December. This cyclical dance of light not only marks the passage of time but also paints a vivid picture of nature's rhythm in this enchanting part of Iceland.

Average Daylight Hours in Mosfellsbaer for May

The chart illustrates the variation in daylight duration in Mosfellsbaer throughout the year, with May highlighted. It shows the monthly changes in daylight hours, calculated by summing the hours between sunrise and sunset.
JanFebMarAprMayJunJulAugSepOctNovDec5h 29m8h 33m11h 50m15h 10m18h 31m20h 50m19h 29m16h 14m12h 55m9h 38m6h 24m4h 18m
Data source: Mosfellsbaer daylight hours, calculated by summing the hours between sunrise and sunset for each day.

May Winds in Mosfellsbaer

In May, Mosfellsbær experiences a gentle breeze with an average wind speed of 3.0 m/s (7 mph), marking a slight decrease from the preceding months. This trend showcases a transition into the warmer season, as earlier spring months, from January to April, had consistently higher winds around 3.5 to 3.8 m/s. As the chill of winter wanes, the milder May winds create a serene atmosphere, perfect for enjoying the burgeoning greenery and longer daylight hours. Interestingly, after May, the wind speeds begin to pick up again, hinting at the increasing energy of late spring and early summer. Overall, May's softer breezes invite a breath of fresh air as the landscape awakens, making it an enchanting time to experience the natural beauty of Iceland.

Average May Wind Speed in Mosfellsbaer

The chart displays monthly wind speed patterns in Mosfellsbaer, 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.
JanFebMarAprMayJunJulAugSepOctNovDec3.83.83.83.53.0 m/s3.53.12.74.03.63.43.3
Data source: Mosfellsbaer May wind data, generated using information from the Copernicus Climate Change Service.

How May Weather in Mosfellsbaer Compares to Other Months

The weather in Mosfellsbaer 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 Mosfellsbaer and find detailed weather information for every month.

In May, temperatures in Mosfellsbaer show a significant improvement compared to January, with a minimum of -4°C (25°F) and an average of 7°C (44°F), climbing up to a maximum of 16°C (62°F). This transition to warmer weather is coupled with high humidity levels around 85% and precipitation of 118 mm (4.6 in) spread over 18 days. In contrast, January is much harsher, with temperatures dipping as low as -16°C (3°F) and averaging -1°C (30°F), peaking at only 10°C (50°F). January also experiences similar precipitation levels of 118 mm (4.6 in) but over just 16 days, accompanied by even higher humidity at 96%. To explore more about January weather specifics, you can visit Mosfellsbaer weather in January.

When comparing the weather in May and February, notable differences emerge. In February, temperatures can plummet as low as -22°C (-7°F), with an average around -1°C (31°F) and rarely exceeding 8°C (47°F). In contrast, May offers much milder temperatures, with a minimum of -4°C (25°F) and an average of 7°C (44°F), peaking at 16°C (62°F). Precipitation is somewhat similar, with February receiving 131 mm (5.1 in) over 17 days, slightly higher than May's 118 mm (4.6 in) across 18 days. Additionally, February tends to be more humid, boasting 95% humidity compared to May's 85%. For more detailed insights on the chilly February climate, visit Mosfellsbaer weather in February.

In comparing the weather between March and May, it is evident that May experiences significantly milder temperatures, with an average of 7°C (44°F) compared to March's chilly average of just 1°C (33°F). The temperature in May ranges from a minimum of -4°C (25°F) to a maximum of 16°C (62°F), while March sees a more frigid minimum of -15°C (5°F) and a maximum of 9°C (49°F). Precipitation levels are relatively close, with May receiving 118 mm (4.6 in) over 18 days and March totaling 106 mm (4.2 in) over 17 days, though March is marked by higher humidity at 94% compared to May's 85%. For more detailed information on March weather, you can check out Mosfellsbaer weather in March.

In comparing the weather of April and May, it becomes evident that May experiences milder temperatures, with a minimum of -4°C (25°F) and an average of 7°C (44°F), while April is chillier, dipping to a minimum of -10°C (15°F) and averaging just 4°C (39°F). Both months see substantial precipitation, with April receiving 123 mm (4.8 in) in 17 days compared to May's 118 mm (4.6 in) over 18 days. Humidity levels remain quite high in both months, with April at 87% and May at 85%. For a closer look at the specifics of April weather in this region, visit Mosfellsbaer weather in April.

May and June present an intriguing transition in weather patterns. In May, temperatures range from a chilly minimum of -4°C (25°F) to a mild maximum of 16°C (62°F), with an average of 7°C (44°F). The month sees considerable precipitation, totaling 118 mm (4.6 in) over 18 days, and tends to be quite humid, with an average humidity of 85%. In contrast, June experiences a rise in temperatures, with a minimum of 2°C (35°F), an average of 9°C (49°F), and a maximum reaching 20°C (68°F). Precipitation decreases to 94 mm (3.7 in) over 15 days, and humidity drops slightly to 81%. This makes June feel warmer and more accommodating compared to the chillier and wetter conditions of May. For more detailed insights, you can check out Mosfellsbaer weather in June.

In May, the weather is cooler, with temperatures ranging from a minimum of -4°C (25°F) to a maximum of 16°C (62°F) and an average of 7°C (44°F). It experiences significant precipitation, totaling 118 mm (4.6 in) over 18 days, with a high humidity level of 85%. In contrast, July brings milder temperatures, with lows of 3°C (38°F) and highs of 23°C (73°F), averaging 11°C (53°F). This month sees less rain, totaling 76 mm (3.0 in) over 16 days, while humidity remains high at 86%. For a detailed look at July weather, check Mosfellsbaer weather in July.

In comparing the weather between May and August, it's clear that August experiences milder temperatures, with minimums rising to 4°C (39°F) and maximums reaching 20°C (69°F), compared to May's range of -4°C (25°F) to 16°C (62°F). The average temperature in August is also higher at 11°C (52°F) versus May's 7°C (44°F). Precipitation is generally lower in August, totaling 83 mm (3.3 in) over 15 days, while May sees greater rainfall at 118 mm (4.6 in) across 18 days. Humidity levels remain quite high in both months, with August at 88% and May slightly lower at 85%. For more detailed information on August weather in Mosfellsbaer, check out Mosfellsbaer weather in August.

In May, the weather in Mosfellsbær features a cool climate, with temperatures ranging from a minimum of -4°C (25°F) to a maximum of 16°C (62°F), coupled with an average temperature of 7°C (44°F). The month also sees considerable rainfall, totaling 118 mm (4.6 in) over 18 rainy days and an overall humidity of 85%. In contrast, September presents slightly warmer temperatures, with a minimum of -3°C (27°F) and a maximum of 16°C (61°F), while the average temperature increases to 8°C (47°F). However, it experiences more precipitation, accumulating 162 mm (6.4 in) over 20 days, along with higher humidity at 92%. For more insights, check out Mosfellsbaer weather in September.

Comparing the weather between May and October reveals notable differences and similarities in temperature, precipitation, and humidity. In May, temperatures typically range from a chilly -4°C (25°F) at night to a comfortable 16°C (62°F) during the day, with an average of 7°C (44°F). This month sees higher precipitation levels at 118 mm (4.6 in) over 18 days and a humidity of 85%. In contrast, October brings slightly cooler temperatures, with a range of -6°C (22°F) to a maximum of 13°C (56°F) and an average of 5°C (41°F). The precipitation is lower at 94 mm (3.7 in) over 16 days, but humidity is notably higher at 93%. For a more detailed look at October’s weather in Mosfellsbaer, you can check Mosfellsbaer weather in October.

When comparing the weather in May and November, significant differences emerge. May typically sees milder temperatures, with average highs reaching 16°C (62°F) and a minimum of -4°C (25°F), while November experiences colder conditions, with an average maximum of 11°C (53°F) and a minimum dropping to -12°C (11°F). May also has higher humidity levels at 85%, but November's humidity rises to 94%, contributing to a chillier atmosphere. Precipitation levels are relatively close, with May receiving 118 mm (4.6 in) over 18 days and November seeing slightly less at 105 mm (4.1 in) over 15 days. For more specific insights into November weather, you can check Mosfellsbaer weather in November.

May and December offer starkly contrasting weather conditions. In May, temperatures typically range from a chilly -4°C (25°F) at night to a moderate 16°C (62°F) during the day, with an average of 7°C (44°F). The month experiences significant precipitation, with about 118 mm (4.6 in) spread over 18 days and humidity levels around 85%. In contrast, December sees much colder temperatures, with nighttime lows plummeting to -15°C (5°F) and daytime highs reaching up to 10°C (50°F), averaging around 0°C (32°F). There is slightly less rainfall at 107 mm (4.2 in), occurring over 17 days, but the humidity is higher at 95%. For a detailed look at December conditions, you can visit Mosfellsbaer weather in December.

Compare Mosfellsbaer's Climate with Cities Worldwide

Conclusion: What to Expect From May Weather in Mosfellsbaer

As May unfolds in Mosfellsbaer, the weather begins to transition from the biting chill of winter, introducing a refreshing mildness that radiates the promise of summer. With average temperatures soaring to a comfortable 7°C (44°F) and peak highs reaching 16°C (62°F), the month provides an ideal backdrop for outdoor exploration. However, travelers should be prepared for frequent rain, as May boasts around 18 days of precipitation, totaling 118 mm (4.6 in), adding a touch of moisture to the vibrant landscape. The increased humidity of 85% can create a cozy atmosphere, making the lush greenery and blooming flora even more captivating. To delve deeper into how the climate shapes life in this enchanting region, visit Mosfellsbaer Climate.