Last updated: March 17, 2025
May in Hafnarfjörður, Iceland presents a blend of cool temperatures and moderate rainfall, offering a unique early summer experience. With maximum temperatures reaching 15°C (59°F) and an average of 7°C (44°F), visitors can expect crisp, invigorating weather. However, it's not uncommon for temperatures to dip as low as -3°C (27°F) during the chilly nights. Rain is a frequent companion in May, with an average precipitation of 124 mm (4.9 in) spread over 18 days, contributing to the region's lush, green landscapes. Humidity remains high at 83%, ensuring a refreshing, albeit cool, atmosphere perfect for exploring the stunning natural beauty of this coastal gem.
In May, Hafnarfjörður, Iceland, experiences a noticeable warming trend that offers a refreshing escape from the cold winter months. With temperatures ranging from a minimum of -3°C (27°F) to a pleasant maximum of 15°C (59°F), the average temperature settles at around 7°C (44°F), signaling the transition into milder weather. This month marks a significant leap from the chill of previous months—April's averages are about 3°C cooler. As daylight increases and nature begins to bloom, the crisp air combined with these inviting temperatures makes May an ideal time for outdoor activities, revealing the beauty of Iceland's landscapes and the vibrant life that awaits.
In Hafnarfjoerdur, Iceland, May experiences a moderate precipitation total of 124 mm (4.9 in), slightly lower than the preceding months of April and February, which tend to receive more rainfall. With 18 rainy days, this month contributes to the early summer's gradual shift towards drier conditions, as seen in June, which typically sees a decrease to 97 mm (3.8 in) over just 17 days of rain. The consistent precipitation throughout the spring months, particularly notable in April at 138 mm (5.4 in), indicates a wet transition into the warmer season. As the rainy days decrease moving into late spring and summer, it reflects a typical trend in the region's climate, highlighting the unique balance of moisture against the backdrop of Iceland's stunning landscapes.
In Hafnarfjoerdur, Iceland, the humidity levels in May settle at a moderate 83%, offering a brief respite from the higher moisture seen in the months surrounding it. Following a slight decline from the typically dense winter months—where humidity hovers around 84-86%—May signifies a transitional phase before the summer months, which see an uptick in dampness, peaking in August at 87%. This gradual shift highlights a consistent pattern where the coastal climate remains relatively humid year-round, but May stands out as a balance point, bridging the cooler spring and the increasingly humid summer. As such, residents and visitors alike can appreciate May’s mild yet moist atmosphere, perfect for exploring the stunning landscapes of this unique locale.
In May, Hafnarfjoerdur experiences a notable shift in its UV Index, reaching 5, which falls into the moderate exposure category. This is a continuation of the increasing trend established in April with a UV Index of 3. As spring progresses, outdoor enthusiasts should be mindful of their burn time, reduced to 30 minutes, indicating that even on cloudy days, the sun's rays can be deceptively strong. This increase in UV exposure highlights the importance of protection as we approach the summer months, where the UV Index climbs even higher. For a comprehensive look at UV levels throughout the year, check out the Hafnarfjoerdur UV Index.
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In Hafnarfjörður, Iceland, the arrival of May brings a remarkable transformation, as the days stretch and the sun shines brightly for an impressive 344 hours throughout the month. This surge in daylight marks a significant leap from April's 215 hours, indicating the end of winter's grip and the full embrace of spring. As the days continue to grow longer, June keeps the momentum with 338 hours of sunlight, while July and August maintain a generous glow, with 316 and 297 hours respectively. The gradual decline begins in September, where the sunlight recedes to 206 hours, reminding us of the cyclic nature of seasons in this enchanting land. May stands out as a beacon of light, inviting both locals and visitors to relish the beauty of Iceland's awakening landscape.
As spring unfolds in Hafnarfjörður, May brings a notable shift in the likelihood of sunny weather, with a 42% chance of sunshine adorning the skies. This is a significant improvement compared to the earlier months, such as January and February, where sunny days are a rarity at 30% and 16%, respectively. The gradual ascent from April's 25% to May's vibrant offerings reflects the invigorating transition into summer. However, sunshine takes a downturn with the arrival of June and beyond, dipping as low as 11% in July and 8% in August. Thus, May stands out as a cherished window of opportunity, inviting residents and visitors alike to soak up the sun before the chill returns in the autumn months.
In Hafnarfjörður, Iceland, the journey from winter's short days to the summer's prolonged sunlight is truly remarkable. Starting with just 5 hours of daylight in January, the sun steadily reemerges as spring approaches, providing 8 hours in February and 11 hours by March. April brings a burst of life with 15 hours of daylight, setting the stage for May, where the daylight reaches an impressive 18 hours. This trend peaks in June, when the days stretch to 20 hours, inviting residents and visitors alike to bask in the ample light. As summer wanes, daylight begins to gently recede, with July still enjoying 19 hours, before tapering off to 16 hours in August, and finally descending into the shorter days of autumn and winter. The cyclical rhythm of daylight in Hafnarfjörður not only marks the seasons but also celebrates the vibrant contrasts of Iceland's natural beauty.
In Hafnarfjörður, Iceland, the winds of May usher in a subtle shift, with an average wind speed of just 3.5 m/s (8 mph). This marks a gentle decline from the preceding months, where January through April presented sturdier gales averaging around 4.3 to 5.0 m/s. As spring deepens, the breezy atmosphere becomes softer, creating a serene backdrop for nature's vibrant revival. This trend of diminishing wind speeds continues into summer, where June and July experience similar conditions. Thus, May represents a calming interlude before the winds pick up again in the fall, highlighting the region's dynamic yet rhythmic climatic dance.
The weather in Hafnarfjoerdur 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 Hafnarfjoerdur and find detailed weather information for every month.
When comparing the weather in May and January, notable differences emerge. In May, temperatures tend to be milder, with a minimum of -3°C (27°F) and an average of 7°C (44°F), peaking at 15°C (59°F). This month also experiences higher humidity at 83% and slightly more precipitation, averaging 124 mm (4.9 in) over 18 days. In contrast, January presents colder conditions with a minimum temperature of -11°C (13°F) and an average of just 1°C (33°F), reaching a maximum of 10°C (51°F). Interestingly, January has a similar amount of precipitation at 118 mm (4.6 in) but over 16 days, coupled with an almost identical humidity level of 84%. For a deeper dive into January's specific weather patterns, visit Hafnarfjoerdur weather in January.
Comparing the weather in May and February reveals a significant shift in temperatures and conditions. In May, temperatures range from a chilly -3°C (27°F) at night to a pleasant 15°C (59°F) during the day, with an average of 7°C (44°F). The month experiences a notable amount of precipitation, with 124 mm (4.9 in) spread over 18 days, and humidity remains high at 83%.
In contrast, February is considerably colder, with temperatures dipping to a minimum of -18°C (0°F) and peaking at 9°C (48°F), averaging just 1°C (34°F). This month also has slightly more precipitation at 135 mm (5.3 in) across 19 days, with humidity at 82%. For a detailed look at February weather specifics, you can check Hafnarfjoerdur weather in February. Overall, May offers a marked improvement in warmth and comfort compared to the frigid conditions typical of February.
In comparing the weather of May and March, it is clear that May experiences milder temperatures, with a minimum of -3°C (27°F) and an average of 7°C (44°F) compared to March’s lower minimum of -11°C (13°F) and an average of just 2°C (35°F). While both months have similar precipitation days—18 days—May sees slightly more rainfall, with a total of 124 mm (4.9 in) versus March’s 105 mm (4.1 in). Humidity remains fairly close between the two months, with May at 83% and March at 85%. For more specific details on March weather patterns, you can visit Hafnarfjoerdur weather in March.
In comparing the weather conditions of May and April, May demonstrates a slight increase in average temperatures, rising from April's average of 4°C (40°F) to 7°C (44°F). Furthermore, May experiences milder minimum temperatures, with a low of -3°C (27°F), compared to April’s colder minimum of -9°C (16°F). Precipitation levels in May, at 124 mm (4.9 in) over 18 days, are slightly lower than April's 138 mm (5.4 in) recorded over 17 days. The humidity remains relatively high in both months, with May averaging 83% and April at 81%. For a more detailed look at April's weather patterns, please visit Hafnarfjoerdur weather in April.
May's weather tends to be cooler and more variable than June's, with temperatures ranging from a chilly minimum of -3°C (27°F) to a comfortable maximum of 15°C (59°F) and an average of 7°C (44°F). The month also experiences higher precipitation, totaling 124 mm (4.9 in) over 18 days, contributing to a humidity level of 83%. In contrast, June ushers in slightly warmer temperatures, with a minimum of 2°C (36°F) and a maximum of 19°C (66°F), leading to an average of 9°C (49°F). The amount of precipitation decreases to 97 mm (3.8 in) over 17 days, while humidity remains relatively stable at 82%. For a closer look at climate specifics, check out Hafnarfjoerdur weather in June.
In May, the weather is noticeably cooler, with temperatures ranging from a minimum of -3°C (27°F) to a maximum of 15°C (59°F), averaging around 7°C (44°F). This month also experiences higher precipitation, totaling 124 mm (4.9 in) over 18 days, coupled with a humidity level of 83%. In contrast, July brings warmer conditions, with temperatures ranging from a minimum of 3°C (38°F) to a maximum of 23°C (74°F) and an average of 11°C (53°F). The precipitation decreases to 81 mm (3.2 in), occurring over 16 days, while humidity rises slightly to 86%. For more details about July's weather, you can visit Hafnarfjoerdur weather in July.
May and August present contrasting weather patterns. In May, temperatures range from a chilly min of -3°C (27°F) to a mild max of 15°C (59°F), with an average of 7°C (44°F). The month sees considerable precipitation, totaling 124 mm (4.9 in) over 18 days, and maintains a high humidity level of 83%. In contrast, August offers a warmer climate, with temperatures ranging from a min of 4°C (40°F) to a max of 19°C (66°F) and an average of 11°C (52°F). Precipitation is less frequent, with about 90 mm (3.6 in) falling over 14 days, and humidity slightly increases to 87%. For more detailed information on August weather, you can check Hafnarfjoerdur weather in August.
May and September both experience cool temperatures, but September tends to be slightly milder, with average temperatures around 8°C (47°F) compared to May's 7°C (44°F). In May, the maximum temperature reaches 15°C (59°F), while in September, it edges up just a degree to 16°C (60°F). However, September is marked by increased precipitation, averaging 163 mm (6.4 in) over 22 rainy days, which is a notable rise from May's 124 mm (4.9 in) across 18 days. Additionally, the humidity levels are higher in September at 87%, compared to May's 83%. For more specific information about the weather in Hafnarfjörður during September, you can check out Hafnarfjoerdur weather in September.
When comparing the weather between May and October, it's evident that both months feature cool temperatures with May generally being slightly warmer. In May, the average temperature hovers around 7°C (44°F) with a max of 15°C (59°F), while October sees an average of 5°C (42°F) and a max of 13°C (55°F). Precipitation levels are fairly close; May records about 124 mm (4.9 in) over 18 days, whereas October has 111 mm (4.4 in) over 17 days. Humidity is a bit higher in October at 88%, compared to May's 83%. For a detailed look at the conditions in October, you can check Hafnarfjoerdur weather in October.
In comparing the weather of May and November, we can see distinct differences in temperature and conditions. May typically experiences milder temperatures, with averages around 7°C (44°F) and a maximum of 15°C (59°F), while November is chillier, averaging just 2°C (36°F) and reaching a maximum of 11°C (52°F). Precipitation levels are relatively close, with May receiving 124 mm (4.9 in) over 18 days and November slightly lower at 112 mm (4.4 in) across 15 days. Humidity is a bit higher in November at 85%, compared to May's 83%, contributing to a cooler and slightly more damp atmosphere. For more specific details, you can check out Hafnarfjoerdur weather in November.
May and December present striking contrasts in weather. In May, temperatures range from a minimum of -3°C (27°F) to an average of 7°C (44°F), peaking at 15°C (59°F), and the month sees 124 mm (4.9 in) of precipitation over 18 days, with humidity at 83%. In contrast, December's temperatures drop significantly, with a minimum of -9°C (16°F) and an average of just 1°C (34°F), reaching a maximum of 10°C (50°F). Precipitation in December is slightly lower at 114 mm (4.5 in) over 16 days, and humidity remains high at 84%. For more detailed insights, you can check Hafnarfjoerdur weather in December.
As May unfolds in Hafnarfjörður, the weather begins to shift, welcoming the mild embrace of spring. Compared to the chillier months that precede it, May brings a notable increase in temperatures, with average highs reaching a comfortable 15°C. However, the transition is not without its showers; the month experiences frequent precipitation, tallying up to 124 mm across 18 days, further enhancing the region's lush landscapes. The average humidity of 83% contributes to a fresh atmosphere, making it a wonderful time for outdoor exploration despite the occasional drizzle. To learn more about the broader climatic patterns that shape this enchanting coastal town, visit Hafnarfjoerdur Climate.