June Weather in Keflavik, Iceland

Last updated: March 17, 2025

June in Keflavik, Iceland offers a refreshing coastal climate characterized by an average temperature of 9°C (48°F), with maximums reaching 15°C (60°F) and minimums dropping to around 4°C (39°F). Visitors can expect a moderate level of precipitation, totaling 87 mm (3.4 in) over approximately 15 days throughout the month, contributing to the lush greenery of the region. With an humidity level of 85%, June provides a cool and breezy atmosphere, perfect for exploration and enjoying the stunning natural landscapes. Whether you're wandering through charming towns or embarking on scenic hikes, the weather creates a uniquely invigorating experience for all who visit.

June Temperature in Keflavik

In June, Keflavik, Iceland experiences a delightful shift towards warmer temperatures, a welcome change after the long, chilly winter months. The mercury begins to rise, with minimum temperatures averaging around 4°C (39°F) and maximums reaching a pleasant 15°C (60°F). This month marks a distinct transition from the spring’s cool grip, as June boasts a comfortable average temperature of 9°C (48°F), making it a great time to explore the stunning landscapes and vibrant flora that Iceland has to offer. As the days grow longer and the midnight sun casts its glow, visitors can relish in the mild weather, perfect for outdoor adventures and enjoying the breathtaking natural beauty of this unique destination.

June Weather in Keflavik: Daily Temperature Highs, Lows, and Averages

The chart illustrates June temperature patterns in Keflavik, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends.
JanFebMarAprMayJunJulAugSepOctNovDec353636404448525248433836
Data source: Temperature data for Keflavik 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.

June Precipitation in Keflavik

In June, Keflavik experiences a notable drop in precipitation compared to the preceding months, with a total of 87 mm (3.4 in) recorded over 15 days. This reduction marks a transition into summer, as rainfall is lighter than in both April and May, which saw higher averages of 133 mm and 115 mm, respectively. Interestingly, the trend of decreasing precipitation continues into July, where levels dip further to 78 mm (3.1 in), indicating a shift towards drier weather. Despite the lighter rain, June's weather is often accompanied by longer daylight hours, making it a vibrant month for both locals and visitors in this picturesque part of Iceland.

June Precipitation Trends in Keflavik

The chart displays monthly precipitation patterns in Keflavik, with values for each month alongside June's data, which is highlighted for easy comparison. It shows the amount of precipitation, providing insights into how June's conditions compare to those of other months.
JanFebMarAprMayJunJulAugSepOctNovDec117126110133115877889171119119119
Data source: Precipitation data for June generated using information from the Copernicus Climate Change Service.
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June Humidity in Keflavik

In June, Keflavik experiences a noticeable shift toward higher humidity, maintaining a steady level of 85% that begins to rival the peak months of summer. This marks a continuation of a gradual increase from May's humidity of 85%, setting the stage for the warmer July and August months, which typically see even higher humidity levels at 87% and 88%, respectively. Throughout the year, humidity levels in Keflavik exhibit a consistent pattern, with winter months hovering around 80% and gradually climbing into the mid-80s by late spring. This trend underscores Iceland's unique coastal climate, where maritime influences keep the air moist, especially as the days grow longer and the temperatures rise.

June Average Humidity in Keflavik

This chart illustrates the average monthly humidity levels in Keflavik, with June's data highlighted for easy comparison. It shows the fluctuation in humidity throughout the year, allowing you to see how June's humidity levels compare to other months.
JanFebMarAprMayJunJulAugSepOctNovDec80%77%82%80%85%85%87%88%85%85%81%80%
Data source: Humidity data for June generated using information from the Copernicus Climate Change Service.

June UV Index in Keflavik

In June, the UV Index in Keflavik, Iceland, reaches 6, indicating a high exposure category with a burn time of just 25 minutes. This marks a noticeable trend as the UV Index escalates from the low levels of winter, where it remained at 1 from January to February, to a moderate 5 in May. As summer begins, it's essential for residents and visitors to be more vigilant about sun protection during the month of June, as the sun's intensity increases significantly. Following June, July maintains the same high index, making it crucial to stay informed about the Keflavik UV Index to enjoy the Icelandic summer safely while minimizing the risk of sunburn. For more detailed information, visit Keflavik UV Index.

Maximum UV Index Levels in Keflavik for June

The chart shows the monthly maximum UV Index (UVI) for Keflavik in June, 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.
JanFebMarAprMayJunJulAugSepOctNovDec112356643211
Data source: Keflavik June 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.

June Sunshine in Keflavik

In Keflavik, Iceland, June shines brightly with an impressive 338 hours of sunshine, making it one of the sunniest months of the year. This peak in daylight follows a gradual increase from a mere 42 hours in January to a vibrant 344 hours in May, highlighting a significant transition into the summer months. While June maintains abundant sunlight, it slightly dips to 312 hours in July, suggesting a subtle shift as the country moves towards late summer. This trend of increasing sunshine not only enhances the beauty of Iceland's stunning landscapes but also invites locals and visitors alike to revel in the great outdoors during this delightful time of year.

Monthly Sunshine Duration in Keflavik: June Highlighted

The June sunshine duration represents the total number of hours Keflavik experiences direct sunlight during the month of June, excluding cloudy or obstructed periods. This chart compares the sunshine duration of June with the other months of the year.
JanFebMarAprMayJunJulAugSepOctNovDec42h90h195h214h344h338h312h294h207h146h79h28h
Data source: Keflavik June Sunshine duration data generated using information from the Copernicus Climate Change Service.

Chance of Sun in Keflavik During June

In Keflavik, Iceland, the likelihood of sunny weather sees significant fluctuations throughout the year, with June presenting a modest 18% chance of sunshine. This figure trails behind the uplifting 49% probability witnessed in May, hinting at the fleeting nature of early summer rays. Following June, the sunshine likelihood dips further in July and August, both hovering around 13% and 12% respectively, indicating that the brightest days of summer may still be elusive. As we transition into autumn, the chance of sun rises to 26% in October, suggesting a slightly more favorable outlook as the warmer months fade. This trend underscores the unpredictable weather patterns of Keflavik, where sunny days can feel like a precious rarity even during the summer season.

Percentage of Sunny Days in June in Keflavik

The chart illustrates the percentage of sunny days in Keflavik throughout the year, with June 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 Keflavik experiences clear skies throughout the year.
JanFebMarAprMayJunJulAugSepOctNovDec29%18%15%26%49%18%13%12%15%26%22%20%
Data source: Keflavik June chance of sun data, generated using information from the Copernicus Climate Change Service.

Daylight Hours in Keflavik in June

June is a spectacular month in Keflavik, Iceland, as daylight peaks at a remarkable 20 hours, allowing residents and visitors alike to bask in the enchanting glow of the midnight sun. This surge in daylight marks a striking contrast to the deep winter months, where January sees only 5 hours of sunshine. As spring unfolds, daylight gradually increases, jumping from 11 hours in March to an impressive 18 hours in May. By the time June arrives, the long days create a vibrant atmosphere, perfect for exploring the breathtaking landscapes and enjoying outdoor activities. Following June, daylight begins to taper off, with July experiencing 19 hours before gradually descending back into the shorter days of autumn. This unique rhythm of light beautifully highlights the seasonal transitions of Iceland, captivating those fortunate enough to experience it.

Average Daylight Hours in Keflavik for June

The chart illustrates the variation in daylight duration in Keflavik throughout the year, with June highlighted. It shows the monthly changes in daylight hours, calculated by summing the hours between sunrise and sunset.
JanFebMarAprMayJunJulAugSepOctNovDec5h 34m8h 35m11h 50m15h 8m18h 26m20h 42m19h 24m16h 11m12h 55m9h 40m6h 28m4h 24m
Data source: Keflavik daylight hours, calculated by summing the hours between sunrise and sunset for each day.

June Winds in Keflavik

In Keflavik, Iceland, June ushers in a gentle shift in the wind, with an average speed of 5.8 m/s (13 mph), slightly up from the calmer conditions of May. This increase reflects a gradual transition towards the bustling summer months, where the winds are notably milder than the brisk gusts of winter, which peak in January at 7.8 m/s (18 mph). Following June, the summer months see a minimal drop in wind intensity, with July recording 5.1 m/s (11 mph) and August further settling at 4.8 m/s (11 mph). This trend suggests a soothing atmosphere perfect for outdoor adventures and exploration, allowing visitors to enjoy the stunning landscapes of Iceland without the powerful winds that define the colder months. Overall, June’s gentle breezes herald the warmth of summer while still offering a hint of the characteristic vigor of Icelandic weather.

Average June Wind Speed in Keflavik

The chart displays monthly wind speed patterns in Keflavik, with values for each month shown alongside June's data, which is highlighted for easy comparison. It illustrates the average wind speed, offering insights into how June's wind conditions compare to the rest of the year.
JanFebMarAprMayJunJulAugSepOctNovDec7.87.27.26.25.05.8 m/s5.14.87.26.87.16.5
Data source: Keflavik June wind data, generated using information from the Copernicus Climate Change Service.

How June Weather in Keflavik Compares to Other Months

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

In June, the weather in Keflavik sees milder temperatures, with a minimum of 4°C (39°F) and a maximum of 15°C (60°F), along with an average of 9°C (48°F). The month experiences about 87 mm (3.4 in) of precipitation over approximately 15 days, accompanied by a high humidity level of 85%. In contrast, January brings much colder conditions, featuring a minimum temperature of -6°C (22°F) and a maximum of 9°C (49°F), with an average temperature of only 2°C (36°F). Precipitation increases to 117 mm (4.6 in) over 17 days, and the humidity remains relatively high at 80%. For more detailed insights on the January weather, you can refer to Keflavik weather in January.

June and February exhibit contrasting weather patterns, highlighting the seasonal differences in temperature and precipitation. In June, temperatures range from a chilly 4°C (39°F) at night to a mild 15°C (60°F) during the day, with an average of 9°C (48°F). The month sees approximately 87 mm (3.4 in) of precipitation over about 15 days, accompanied by high humidity at 85%. In stark contrast, February experiences much colder conditions, with minimum temperatures dropping to -9°C (16°F) and a maximum of only 8°C (47°F), averaging 2°C (36°F). Precipitation is more abundant at 126 mm (5.0 in), occurring over 19 days, and while humidity is slightly lower at 77%, the frigid temperatures make for a significantly harsher climate. For more detailed information, you can check this link: Keflavik weather in February.

When comparing the weather between June and March, it's evident that June presents significantly warmer temperatures, with average highs reaching 15°C (60°F) compared to March's maximum of only 8°C (47°F). March experiences colder conditions, with minimum temperatures dropping to -6°C (21°F), while June has a milder minimum of 4°C (39°F). Precipitation levels are also notable; March receives slightly more rainfall, totaling 110 mm (4.3 in) over 18 days, compared to June's 87 mm (3.4 in) across 15 days. Humidity levels are relatively similar, with June at 85% and March at 82%. For a detailed look at March weather conditions, you can visit Keflavik weather in March.

When comparing the weather in June and April, June generally offers milder temperatures with average daily highs reaching around 15°C (60°F), compared to April's maximum of 11°C (52°F). However, April experiences colder nights, with temperatures dropping to a minimum of -7°C (20°F), while June's lows remain above 4°C (39°F). Precipitation is also notable; June receives 87 mm (3.4 in) over approximately 15 days, while April has higher rainfall at 133 mm (5.2 in) over 18 days. Humidity levels are slightly higher in June at 85%, compared to 80% in April. For more detailed insights into April weather, visit Keflavik weather in April.

In comparing the weather of June and May, we see that June experiences slightly warmer temperatures, with a minimum of 4°C (39°F), an average of 9°C (48°F), and a maximum of 15°C (60°F). In contrast, May has a lower temperature range, featuring a minimum of 0°C (33°F), an average of 7°C (44°F), and a maximum of 12°C (54°F). While both months experience high humidity at 85%, June receives less precipitation overall, totaling 87 mm (3.4 in) over 15 days, compared to May’s 115 mm (4.5 in) over 16 days. For more details on weather conditions in May, check this link: Keflavik weather in May.

June and July both bring mild temperatures, but July tends to be slightly warmer overall. In June, temperatures range from a minimum of 4°C (39°F) to a maximum of 15°C (60°F), with an average of 9°C (48°F). In contrast, July sees minimum temperatures of 6°C (43°F) and can reach up to 19°C (66°F), averaging 11°C (52°F). Precipitation is slightly lower in July at 78 mm (3.1 in) over 18 days compared to June’s 87 mm (3.4 in) over 15 days, although humidity remains high in both months at around 85-87%. For more detailed information on weather conditions in July, check out Keflavik weather in July.

In June, the weather tends to be cooler with temperatures ranging from a minimum of 4°C (39°F) to a maximum of 15°C (60°F) and an average of 9°C (48°F). The month sees an average precipitation of 87 mm (3.4 in) over 15 days, accompanied by a high humidity level of 85%. In contrast, August experiences slightly warmer temperatures, with a minimum of 7°C (45°F), an average of 11°C (52°F), and a maximum of 16°C (62°F). Precipitation is marginally higher at 89 mm (3.5 in) over 13 days, while humidity rises slightly to 88%. For more details about the weather in August, you can explore Keflavik weather in August.

In comparing the weather between June and September, we see both similarities and notable differences. June typically features slightly warmer temperatures, with average highs reaching up to 15°C (60°F), while September sees a max of 13°C (56°F). Both months experience an average temperature of 9°C (48°F), but September tends to be cooler, with minimum temperatures dropping to 1°C (34°F) compared to June's 4°C (39°F). Precipitation levels are also higher in September, totaling 171 mm (6.7 in) across 21 days, compared to June's 87 mm (3.4 in) over 15 days. Humidity remains constant at around 85% in both months, contributing to a damp atmosphere. For more detailed insights, you can explore Keflavik weather in September.

In June, the weather is generally milder with temperatures ranging from a minimum of 4°C (39°F) to a maximum of 15°C (60°F), averaging around 9°C (48°F). This month sees about 87 mm (3.4 in) of precipitation over roughly 15 days, with humidity levels at a consistent 85%. In contrast, October experiences cooler temperatures, where the minimum can drop to -1°C (30°F) and the average is 6°C (44°F), peaking at 12°C (53°F). Additionally, October is wetter, with precipitation reaching 119 mm (4.7 in) spread over 18 days, maintaining the same humidity level of 85%. For more detailed insights, you can check out Keflavik weather in October.

In comparing the weather between June and November, June enjoys milder temperatures with average highs of 15°C (60°F) and a minimum of 4°C (39°F), fostering a relatively pleasant climate for outdoor activities. In contrast, November brings cooler conditions, with average temperatures peaking at 10°C (51°F) and dipping to a minimum of -4°C (25°F). Additionally, November tends to be wetter, receiving 119 mm (4.7 in) of rainfall over 18 days compared to June’s 87 mm (3.4 in) over 15 days. While humidity levels are slightly higher in June at 85%, November remains relatively humid at 81%. For more detailed information, you can explore Keflavik weather in November.

June and December present contrasting weather conditions. In June, temperatures range from a minimum of 4°C (39°F) to a maximum of 15°C (60°F), with an average of 9°C (48°F). This month experiences 87 mm (3.4 in) of precipitation over about 15 days, accompanied by relatively high humidity levels of 85%. Conversely, December is much chillier, with temperatures dipping to a minimum of -6°C (21°F) and only reaching a maximum of 9°C (49°F), resulting in an average temperature of just 2°C (37°F). Precipitation increases slightly to 119 mm (4.7 in) across 18 days, while humidity remains lower at 80%. For those interested in a detailed look at the weather conditions during this frosty month, visit Keflavik weather in December.

Compare Keflavik's Climate with Cities Worldwide

Conclusion: What to Expect From June Weather in Keflavik

June in Keflavik marks the transition into summer, bringing milder temperatures that delight locals and travelers alike. With an average temperature hovering around a comfortable 9°C, days become longer and brighter, creating the perfect backdrop for outdoor adventures. However, expect occasional rain, as the month sees precipitation on about half the days, contributing to the region's lush landscapes. The high humidity levels can add a chill to the air, reminding visitors that they're still in a coastal climate. For a deeper dive into the distinct features of Keflavik's climate throughout the year, be sure to explore Keflavik Climate.