May Weather in Grundarfjoerdur, Iceland

Last updated: March 17, 2025

May in Grundarfjörður, Iceland offers a refreshing transition into spring, characterized by a maximum temperature of 12°C (53°F) and an average of 6°C (42°F). The month often starts chilly, with minimum temperatures dipping to -1°C (31°F). Expect a wet period, as 80 mm (3.1 in) of precipitation falls over 14 days, contributing to the lush landscape. Humidity levels remain high at 87%, enhancing the invigorating Icelandic atmosphere. Whether you're hiking through the vibrant scenery or enjoying the breathtaking coastal views, May presents a unique and enchanting experience in this charming town.

May Temperature in Grundarfjoerdur

As May arrives in Grundarfjörður, Iceland, temperatures begin to show a promising shift towards milder conditions, signaling the approach of summer. With a minimum temperature of -1°C (31°F) and an average of 6°C (42°F), the chill of winter starts to fade away, making way for daytime highs reaching up to 12°C (53°F). This marks a notable increase from the preceding months, where temperatures hovered around freezing. The transition from the cold grip of April, with its max reaching only 10°C (51°F), highlights the annual warming trend that occurs as spring unfolds. In May, you can expect to experience the fresh, cool air of early spring, perfect for exploring the stunning landscapes and breathtaking vistas that Iceland has to offer.

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

The chart illustrates May temperature patterns in Grundarfjoerdur, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends.
JanFebMarAprMayJunJulAugSepOctNovDec343435384247505147433836
Data source: Temperature data for Grundarfjoerdur generated using information from the Copernicus Climate Change Service.
Choose your preferred temperature unit
The average of daily temperatures (24 hours) calculated across all days in the month.

May Precipitation in Grundarfjoerdur

In May, Grundarfjörður experiences a noticeable decrease in precipitation, with a total of 80 mm (3.1 in) spread over 14 days. This is a slight decline compared to the wetter months of April and February, which both exceed 100 mm. The trend in May hints at a transitional phase into the drier summer months, as June typically follows with even lower precipitation levels. This pattern emphasizes the shifting climate dynamics in the region, where May serves as a bridge between the lingering spring rains and the drier spell of summer, making it a unique time for both locals and visitors to enjoy the beauty of Iceland’s landscapes.

May Precipitation Trends in Grundarfjoerdur

The chart displays monthly precipitation patterns in Grundarfjoerdur, 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.
JanFebMarAprMayJunJulAugSepOctNovDec9510690105806274731591018791
Data source: Precipitation data for May generated using information from the Copernicus Climate Change Service.
Choose your preferred precipitation unit

May Humidity in Grundarfjoerdur

As the spring months transition into summer, May in Grundarfjörður, Iceland experiences a slight dip in humidity, settling at 87%. This is part of a subtle decline following April’s higher level of 86%. While January and February maintain the year’s highest humidity levels at 89%, May's figure indicates a gradual easing in moisture as warmer temperatures approach. Overall, the humidity trend remains relatively high throughout the year, with a consistent range of 85% to 90%, reflecting Iceland's cool coastal climate and lush landscapes. As summer arrives, Grundarfjörður's air may feel a bit lighter, yet the rich, vibrant atmosphere remains a hallmark of this beautiful locale.

May Average Humidity in Grundarfjoerdur

This chart illustrates the average monthly humidity levels in Grundarfjoerdur, 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.
JanFebMarAprMayJunJulAugSepOctNovDec89%89%90%86%87%85%88%89%89%88%87%87%
Data source: Humidity data for May generated using information from the Copernicus Climate Change Service.

May UV Index in Grundarfjoerdur

As spring gives way to summer in Grundarfjöðr, Iceland, May marks a noticeable shift in the UV Index, climbing to a level 5 under the moderate exposure category. This increase signals a change from the lower UV levels seen in the earlier months, making it essential for residents and visitors to stay vigilant about sun protection, with a burn time of just 30 minutes. The trend continues into June and July, where the UV Index remains steady at 5, underscoring the importance of safeguarding your skin as outdoor activities ramp up. As you enjoy the lush landscapes and vibrant atmosphere of Grundarfjöðr, be sure to monitor the UV readings for a more enjoyable and safe experience. For detailed information, visit Grundarfjoerdur UV Index.

Maximum UV Index Levels in Grundarfjoerdur for May

The chart shows the monthly maximum UV Index (UVI) for Grundarfjoerdur 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.
JanFebMarAprMayJunJulAugSepOctNovDec112355543211
Data source: Grundarfjoerdur 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 Grundarfjoerdur

May in Grundarfjörður, Iceland, is a delightful turning point in the year, basking in 343 hours of sunshine, a remarkable leap from the 228 hours recorded in April. As spring settles in, the increase in sunlight heralds a vibrant transformation of the landscape, inviting locals and visitors alike to soak in the beauty of blooming flora. This trend of escalating daylight continues into the early summer months, with June and July still enjoying substantial sun, though slightly less than May. In contrast, as autumn approaches, the hours of daylight gradually decline, dipping to just 56 hours by November. Overall, May serves as a shining example of nature’s rebirth, making it an ideal time to experience the breathtaking scenery and vibrant atmosphere of Grundarfjörður.

Monthly Sunshine Duration in Grundarfjoerdur: May Highlighted

The May sunshine duration represents the total number of hours Grundarfjoerdur 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.
JanFebMarAprMayJunJulAugSepOctNovDec25h81h190h228h343h311h298h268h179h125h56h17h
Data source: Grundarfjoerdur May Sunshine duration data generated using information from the Copernicus Climate Change Service.

Chance of Sun in Grundarfjoerdur During May

In Grundarfjörður, Iceland, the likelihood of sunny weather notably increases as spring approaches, with May boasting a 48% chance of sunshine—the highest percentage for the year. This month marks a significant uptick compared to the preceding months, such as April at 25% and March with a mere 14%. The trend suggests a gradual transition to sunnier days after the long winter months, making May an appealing time to visit. Interestingly, this peak in sunny weather is followed by a steep decline in the summer months, where June's chance drops to 24% and further decreases in July and August. Thus, if you're hoping to bask in the sun, May presents a prime opportunity in Grundarfjörður.

Percentage of Sunny Days in May in Grundarfjoerdur

The chart illustrates the percentage of sunny days in Grundarfjoerdur 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 Grundarfjoerdur experiences clear skies throughout the year.
JanFebMarAprMayJunJulAugSepOctNovDec27%19%14%25%48%24%14%14%14%21%21%25%
Data source: Grundarfjoerdur May chance of sun data, generated using information from the Copernicus Climate Change Service.

Daylight Hours in Grundarfjoerdur in May

In Grundarfjörður, Iceland, the transition from winter to summer brings a remarkable increase in daylight hours, creating a symphony of light as the seasons change. Starting with a mere 5 hours of daylight in January, the days dramatically lengthen, reaching 8 hours by February and 11 hours in March. By April, the daylight extends to 15 hours, heralding the arrival of spring. The most striking change occurs in May, when the sun graces the landscape for 18 hours, inviting locals and visitors alike to embrace the beauty of the outdoors. This peak in daylight continues through June, with an impressive 21 hours of sunlight—ideal for exploring Iceland’s breathtaking scenery. As summer fades into autumn, daylight gradually declines, slipping to 16 hours in August and down to 12 hours by September, before tapering off again in the winter months to just 3 hours in December. This rhythmic fluctuation of daylight throughout the year not only shapes the environment but also influences the vibrant lifestyle of Grundarfjörður's inhabitants.

Average Daylight Hours in Grundarfjoerdur for May

The chart illustrates the variation in daylight duration in Grundarfjoerdur throughout the year, with May highlighted. It shows the monthly changes in daylight hours, calculated by summing the hours between sunrise and sunset.
JanFebMarAprMayJunJulAugSepOctNovDec5h 10m8h 25m11h 49m15h 17m18h 50m21h 31m19h 55m16h 24m12h 57m9h 33m6h 9m3h 52m
Data source: Grundarfjoerdur daylight hours, calculated by summing the hours between sunrise and sunset for each day.

May Winds in Grundarfjoerdur

In May, Grundarfjörður experiences a gentle shift in wind patterns, with an average speed of 5.9 m/s (13 mph), continuing a trend of gradually decreasing winds from the spring peak in April. This drop marks a notable transition, as the area sees its calmest winds of the year, hinting at the more tranquil summer months ahead. As the windy season wanes, June and July maintain similar light breezes, averaging around 6.1 m/s (14 mph) and 5.4 m/s (12 mph) respectively. The overall trend towards lighter winds in late spring invites residents and visitors alike to relish the stunning landscapes and outdoor activities without the challenge of stronger gusts, making May a delightful time in this picturesque Icelandic town.

Average May Wind Speed in Grundarfjoerdur

The chart displays monthly wind speed patterns in Grundarfjoerdur, 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.
JanFebMarAprMayJunJulAugSepOctNovDec8.27.08.06.15.9 m/s6.15.44.27.98.67.07.1
Data source: Grundarfjoerdur May wind data, generated using information from the Copernicus Climate Change Service.

How May Weather in Grundarfjoerdur Compares to Other Months

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

In comparing the weather of May and January, it's clear that May generally offers milder temperatures. With average highs of 12°C (53°F) and lows around 1°C (34°F), May presents a more pleasant climate than January, which has an average temperature of just 1°C (34°F) and can dip down to -6°C (21°F). However, January sees slightly more precipitation, averaging 95 mm (3.7 in) over 16 days, compared to May's 80 mm (3.1 in) over 14 days. The humidity levels are similar as well, with January at 89% and May at 87%. For a more detailed look at January's weather, you can check out Grundarfjoerdur weather in January.

May and February exhibit distinctly different weather patterns. In May, temperatures are notably milder, with a minimum of -1°C (31°F) and a maximum of 12°C (53°F), averaging around 6°C (42°F). In contrast, February's chill can be felt with temperatures dipping as low as -7°C (20°F) and only reaching a maximum of 7°C (45°F), averaging just 1°C (34°F). Precipitation is more intense in February, totaling 106 mm (4.2 in) over 18 days, compared to May’s 80 mm (3.1 in) spread across 14 days. Humidity levels remain relatively high in both months, with 87% in May and 89% in February, creating a damp atmosphere. For more detailed insights, you can check out the Grundarfjoerdur weather in February.

When comparing the weather in May and March, it's clear that May offers milder temperatures, with an average of 6°C (42°F) compared to March's average of just 1°C (35°F). The minimum temperature in May is slightly higher at -1°C (31°F), making it a more pleasant month overall. However, both months see a significant amount of precipitation, with May experiencing 80 mm (3.1 in) over 14 days and March seeing 90 mm (3.5 in) over 16 days. Humidity is also high in both months, with March being slightly more humid at 90% compared to May's 87%. For a detailed comparison of March weather in a specific location, you can refer to Grundarfjoerdur weather in March.

When comparing the weather in May to that of April, we can see some notable differences. May tends to be slightly warmer, with an average temperature of 6°C (42°F) compared to April's 3°C (38°F). The minimum and maximum temperatures in May are also higher, ranging from -1°C (31°F) to 12°C (53°F), whereas April experiences a lower minimum of -7°C (20°F) and a maximum of 10°C (51°F). Despite May being warmer, it has a moderate amount of precipitation, totaling 80 mm (3.1 in) over 14 days, which is less than April's 105 mm (4.1 in) spread across 17 days. The humidity remains quite similar in both months, with May at 87% and April at 86%. For those interested in more detailed information, you can check Grundarfjoerdur weather in April.

May and June offer a noticeable shift in weather, with June typically warmer and slightly drier. In May, temperatures range from a chilly minimum of -1°C (31°F) to an average of 6°C (42°F) and a maximum of 12°C (53°F). Contrastingly, June sees a minimum temperature of 3°C (38°F) and a more moderate average of 8°C (47°F), reaching up to 14°C (58°F) at its peak. While May experiences higher precipitation at 80 mm (3.1 in) over 14 days, June has a more manageable total of 62 mm (2.4 in) across 13 days. Humidity levels slightly decrease in June to 85%, compared to May's 87%. For more information, you can check Grundarfjoerdur weather in June.

In May, the weather in Grundarfjörður is marked by cooler temperatures, with a minimum of -1°C (31°F) and an average of 6°C (42°F), peaking at 12°C (53°F). With 80 mm (3.1 in) of precipitation over 14 days and high humidity at 87%, May can feel quite damp and chilly. In contrast, July experiences milder conditions, showing a minimum temperature of 6°C (43°F) and an average of 10°C (51°F), reaching a maximum of 16°C (62°F). The precipitation is slightly less at 74 mm (2.9 in), also spread over 14 days, and the humidity remains high at 88%. For more detailed insights, you can check Grundarfjoerdur weather in July.

In comparing the weather between May and August, we see a noticeable shift in temperature and conditions. May experiences cooler temperatures, ranging from a minimum of -1°C (31°F) to a maximum of 12°C (53°F) with an average of 6°C (42°F). In contrast, August offers slightly warmer temperatures, with a minimum of 6°C (43°F) and a maximum of 16°C (60°F), averaging around 10°C (51°F). While both months have similar levels of precipitation—80 mm (3.1 in) in May and 73 mm (2.9 in) in August—May sees rainfall on 14 days compared to August's 13 days of wet weather. Humidity remains high in both months, at 87% in May and rising slightly to 88% in August. For those interested in the specific weather patterns of August, more details can be found here: Grundarfjoerdur weather in August.

May typically offers slightly cooler temperatures compared to September, with average highs around 12°C (53°F) and lows dipping to -1°C (31°F). In contrast, September sees an increase in warmth with average temperatures ranging from 2°C (36°F) at night to a daily maximum of 13°C (56°F). However, September experiences significantly more rainfall, with 159 mm (6.3 in) over 18 days, compared to May's 80 mm (3.1 in) across 14 days. Both months feature high humidity levels, hovering around 87% in May and slightly increasing to 89% in September. For a more detailed look at September weather, check out Grundarfjoerdur weather in September.

In comparing the weather between May and October, we find that both months experience similar minimum temperatures, with lows around -1°C (31°F). However, the average maximum temperature in May is slightly higher at 12°C (53°F) compared to October's 10°C (50°F). Precipitation levels also differ, with October receiving increased rainfall at 101 mm (4.0 in), spread over 18 days, whereas May sees 80 mm (3.1 in) over 14 days. Humidity levels remain relatively high in both months, with October at 88% and May at 87%. For more detailed information about October's weather, you can visit Grundarfjoerdur weather in October.

May and November present a marked contrast in their weather patterns, despite both months featuring similar humidity levels of 87%. In May, temperatures range from a minimum of -1°C (31°F) to an average of 6°C (42°F), with a maximum of 12°C (53°F). This month also sees about 80 mm (3.1 in) of precipitation spread over 14 days. In contrast, November is slightly colder, with temperatures dipping from a minimum of -3°C (27°F) to an average of 3°C (38°F) and a maximum of 10°C (51°F). Additionally, November experiences a bit more rainfall, totaling 87 mm (3.4 in) across 15 days. For a closer look at the weather conditions in November, you can visit Grundarfjoerdur weather in November.

In May, the weather begins to warm up, with temperatures ranging from a minimum of -1°C (31°F) to a maximum of 12°C (53°F), and an average of 6°C (42°F). During this month, there is also a notable amount of precipitation, averaging around 80 mm (3.1 in) over 14 rainy days, with a consistent humidity level of 87%.

In contrast, December features cooler temperatures, with a minimum of -5°C (23°F) and a maximum of 9°C (48°F), resulting in an average temperature of only 2°C (36°F). Precipitation increases slightly to 90 mm (3.6 in) spread over 16 days, while humidity remains steady at 87%. For more detailed information about the weather in Grundarfjörður during December, you can check Grundarfjoerdur weather in December.

Compare Grundarfjoerdur's Climate with Cities Worldwide

Conclusion: What to Expect From May Weather in Grundarfjoerdur

As spring unfolds in Grundarfjörður, May marks a transition with cooler temperatures and increased humidity that sets it apart from summer months. While the average temperature measures around 6°C, the chance of rain remains significant, with precipitation impacting nearly half the month. This results in a distinctive blend of brisk air and lush landscapes, giving the area its vibrant, refreshing appeal. As you prepare for your visit, be sure to explore more about the subtleties of weather throughout the year at Grundarfjoerdur Climate.