Last updated: March 17, 2025
In Keflavik, Iceland, August presents a blend of mild temperatures and frequent rain, making it a unique month for visitors. With maximum temperatures averaging 16°C (62°F) and minimums dipping to 7°C (45°F), the overall average hovers around a cool 11°C (52°F). Nature enthusiasts may want to prepare for the 89 mm (3.5 in) of rainfall across approximately 13 wet days, as humidity levels remain high at 88%. Whether you’re exploring the rugged landscapes or delving into local culture, August’s weather in Keflavik offers a refreshing, albeit wet, experience.
In August, Keflavik, Iceland, experiences a refreshing transition into late summer, with temperatures ranging from a comfortable 7°C (45°F) at night to a pleasant 16°C (62°F) during the day. This month records an average temperature of 11°C (52°F), making it one of the warmest times of the year. As a stark contrast to the winter months, August showcases a significant rise in warmth, rising from the frigid lows of January that plunge to -6°C (22°F). The gradual increase in temperatures from early spring, where the average barely reaches 5°C (41°F) in April, culminates in this vibrant month. Such moderate weather makes August an ideal time for exploring the stunning landscapes of Iceland, making it a favored choice for travelers seeking to experience the unique beauty of the region.
In August, Keflavik experiences a brief respite from the heavier rains characteristic of earlier summer months, with precipitation amounting to 89 mm (3.5 in) over 13 days of rain. This marks a notable decrease from the July total of 78 mm (3.1 in), suggesting a gradual transition toward the wetter autumn months. As the year progresses, September brings a significant spike in precipitation to 171 mm (6.7 in) over 21 days, indicating that while August offers slightly drier conditions, it serves as a precursor to the wetter season ahead. Overall, the trend highlights a seasonal shift with August acting as a bridge between the drier summer and the increasingly wet fall.
In August, Keflavik experiences a notable peak in humidity, reaching 88%, which is the highest level recorded throughout the year. This trend marks the culmination of steadily rising humidity from July's 87% and reflects the typical Scandinavian summer climate, characterized by both warmth and moisture. As the seasons transition, humidity levels begin to taper off in September to 85%, hinting at the onset of autumn. Overall, the summer months of May through August consistently hover around 85%, underscoring a humid climate that influences not only the weather but the lush landscapes of Iceland.
In August, Keflavik experiences a UV Index of 4, placing it in the moderate exposure category. This signifies a shift from the high levels of UV radiation seen in the summer months of June and July, where the Index reached 6. With a burn time of just 30 minutes, August serves as a reminder that while the summer sun begins to wane, precautions are still necessary for skin protection. Interestingly, the UV levels generally trend downward as the year progresses, starting at a low Index of 1 in January, and only reaching a maximum of 6 in peak summer. As the days shorten, visitors can enjoy the scenic beauty of this coastal town with a bit more safety in mind. For ongoing updates on UV levels, check out Keflavik UV Index.
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In Keflavik, Iceland, August shines with 294 hours of anticipated sunlight, marking a gentle decline from the vibrant summer months of June and July, which boast 338 and 312 hours respectively. This gradual reduction hints at summer's sweet surrender to the approaching autumn. Yet, August still radiates ample daylight, inviting exploration and adventure before the days shorten. Reflecting the overall trend, summer months consistently deliver the most sunshine, providing a stark contrast to the dimmer winter, where hours dip to a mere 28 in December. With every passing month, the rhythm of light and dark in Keflavik showcases the island's distinct and enchanting seasonal cycle.
In Keflavik, Iceland, the likelihood of sunny weather takes a noticeable dip in August, with only a 12% chance of sunshine. This trend is part of a broader shift throughout the year, where the summer months exhibit generally lower probabilities of sunny days compared to earlier springs and later autumns. Notably, May stands out with a more promising 49% chance of sun, suggesting that while summer may not be the sunniest season in Iceland, it still offers moments of light that are valued amidst the often overcast skies. As temperatures rise and tourists flock to the region, those hoping for a glimpse of sun in August may need to manage their expectations, as the chances for clear skies are among the lowest of the year.
In Keflavik, Iceland, the shifting daylight throughout the year presents a captivating rhythm, particularly evident in August when the sun graces the landscape with 16 hours of light. This month marks a noticeable decline from the summer peak of 20 hours in June and 19 hours in July, yet it still offers a generous amount of daylight for exploration and adventure. As summer gives way to autumn, the gradual decrease continues into September with 12 hours, hinting at the shorter days ahead. The transition in August serves as a gentle reminder of nature's cycle, where longer, vibrant summer days slowly give way to the cozy embrace of winter. The extending twilight hours encourage moments of reflection and appreciation for the beauty of Iceland's landscapes bathed in soft evening light.
In Keflavik, Iceland, the August winds offer a refreshing respite from the more vigorous gusts of earlier months. With an average wind speed of just 4.8 m/s (11 mph), August stands out as the calmest month of the year, showcasing a notable decrease from the winter peaks, where January winds can reach 7.8 m/s (18 mph). As summer unfolds, wind speeds gradually decline, with May at 5.0 m/s (11 mph) and July slightly lower at 5.1 m/s. This trend emphasizes a gentle, serene atmosphere conducive to enjoying the vibrant Icelandic summer landscapes. As autumn approaches, the winds pick up again in September, returning to 7.2 m/s (16 mph), signaling a transition to the brisk conditions that characterize the rest of the year.
The weather in Keflavik changes throughout the year, offering a unique experience in each season. Below is a month-by-month comparison of August'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.
August and January present contrasting weather patterns in Keflavik. In August, temperatures range from a mild 7°C (45°F) to a pleasant maximum of 16°C (62°F), accompanied by relatively high humidity at 88% and a moderate amount of precipitation totaling 89 mm (3.5 in) over about 13 days. In contrast, January experiences much colder conditions, with temperatures dropping to a minimum of -6°C (22°F) and peaking at just 9°C (49°F). The month is wetter, with precipitation reaching 117 mm (4.6 in) across 17 days, while humidity remains lower at 80%. For a closer look at January's weather, check out Keflavik weather in January.
When comparing the weather in August and February, there are notable differences in temperature and precipitation. August is generally milder, with temperatures ranging from a low of 7°C (45°F) to a high of 16°C (62°F) and an average of 11°C (52°F). The month sees about 89 mm (3.5 in) of precipitation over approximately 13 days, accompanied by high humidity levels at 88%. In contrast, February experiences colder temperatures, with a minimum of -9°C (16°F) and a maximum of only 8°C (47°F), averaging just around 2°C (36°F). This month also receives more precipitation, totaling 126 mm (5.0 in) spread across 19 days, though humidity is lower at 77%. For more details, you can check Keflavik weather in February.
Comparing the weather in August and March reveals significant differences in temperature and precipitation patterns. August tends to be milder, with average temperatures ranging from a minimum of 7°C (45°F) to a maximum of 16°C (62°F), accompanied by relatively high humidity at 88%. In contrast, March experiences much cooler conditions, with temperatures ranging from a minimum of -6°C (21°F) to a maximum of 8°C (47°F) and a lower humidity level of 82%. Moreover, March sees slightly more precipitation on average, with 110 mm (4.3 in) over 18 days, compared to August's 89 mm (3.5 in) across 13 days. For a deeper look into the weather specifics for this month, check out Keflavik weather in March.
When comparing the weather in August and April, it's clear that August is generally milder, with temperatures ranging from a minimum of 7°C (45°F) to a maximum of 16°C (62°F), while April experiences chillier conditions, with temperatures dropping as low as -7°C (20°F) and reaching a maximum of 11°C (52°F). Additionally, April tends to be wetter, recording 133 mm (5.2 in) of precipitation over 18 days, compared to August’s 89 mm (3.5 in) over 13 days. While humidity levels are relatively high in both months, August has slightly more, sitting at 88% compared to April's 80%. For more detailed information, you can check Keflavik weather in April.
In comparing the weather in August and May, August tends to be slightly warmer with average temperatures ranging from 7°C (45°F) at night to a maximum of 16°C (62°F) during the day, while May features cooler conditions with temperatures averaging between 0°C (33°F) and 12°C (54°F). Although August has a lower total precipitation of 89 mm (3.5 in) over 13 days, it sees a higher average humidity of 88%, compared to May's 85% humidity and greater precipitation of 115 mm (4.5 in) spread over 16 days. For a detailed look at the weather in May, you can visit Keflavik weather in May.
When comparing the weather between June and August, we see some notable differences and similarities. August tends to be slightly warmer, with average temperatures ranging from a minimum of 7°C (45°F) to a maximum of 16°C (62°F), whereas June's temperatures range from 4°C (39°F) to 15°C (60°F). Both months experience similar levels of precipitation, with August having 89 mm (3.5 in) over 13 days and June receiving 87 mm (3.4 in) over 15 days. Additionally, August has a marginally higher humidity at 88%, compared to June's 85%. For a closer look at June's specific weather conditions, you can check out this link: Keflavik weather in June.
In comparing the weather between July and August, we see some notable differences. July features slightly warmer temperatures, with a minimum of 6°C (43°F) and a maximum of 19°C (66°F), whereas August has a minimum of 7°C (45°F) and a maximum of 16°C (62°F). Both months have an average temperature of 11°C (52°F). Precipitation levels are also higher in August, with 89 mm (3.5 in) over 13 days, compared to July's 78 mm (3.1 in) over 18 days. Humidity remains quite similar, with August at 88% and July at 87%. For more details on July's weather, you can check Keflavik weather in July.
August tends to be milder than September, with temperatures ranging from a minimum of 7°C (45°F) to a maximum of 16°C (62°F), and an average of 11°C (52°F). In contrast, September sees cooler temperatures, with a minimum of 1°C (34°F) and a maximum of 13°C (56°F), bringing the average down to 9°C (48°F). Additionally, September experiences more rainfall, totaling 171 mm (6.7 in) over 21 days compared to August's 89 mm (3.5 in) over 13 days. Humidity levels are similar, with August at 88% and September slightly lower at 85%. For more details on September weather, you can visit Keflavik weather in September.
In comparing the weather conditions of August and October, August tends to be milder with temperatures ranging from a minimum of 7°C (45°F) to a maximum of 16°C (62°F) and an average of 11°C (52°F). This month also experiences considerable precipitation at 89 mm (3.5 in) over approximately 13 days, coupled with high humidity levels of 88%. In contrast, October brings cooler temperatures, with a minimum of -1°C (30°F), an average of 6°C (44°F), and a maximum of 12°C (53°F). It is also wetter, with 119 mm (4.7 in) of rain spread over 18 days, while the humidity slightly decreases to 85%. For more details on the weather in October, visit Keflavik weather in October.
When comparing the weather in August and November, it's evident that November is significantly colder. August features milder temperatures with a minimum of 7°C (45°F) and an average of 11°C (52°F), peaking at 16°C (62°F). In contrast, November's temperatures drop, with a minimum of -4°C (25°F) and an average of 4°C (39°F), maxing out at 10°C (51°F). Precipitation is also more frequent in November, accumulating to 119 mm (4.7 in) over 18 days compared to August's 89 mm (3.5 in) across 13 days. Additionally, while humidity remains relatively high in both months, it is slightly lower in November at 81%, compared to August's 88%. For a closer look at November weather, check out Keflavik weather in November.
In comparing August and December weather, August offers milder temperatures with a minimum of 7°C (45°F) and a maximum of 16°C (62°F), while December experiences much colder conditions, featuring a minimum of -6°C (21°F) and a maximum of 9°C (49°F). Precipitation is relatively high in both months, with August receiving 89 mm (3.5 in) across 13 days, compared to December’s 119 mm (4.7 in) over 18 days. Humidity levels are slightly higher in August at 88%, while December's humidity is around 80%, contributing to a distinctly different feel during each month. For more detailed information on December weather, you can check Keflavik weather in December.
As summer wanes, August in Keflavik presents a distinct transition in weather, characterized by moderate temperatures and noticeable humidity. With maximum highs reaching around 16°C (62°F), the month offers a pleasant reprieve from the chillier temperatures typical of late autumn and winter. However, the average temperature settles at a cool 11°C (52°F), making it feel brisk, especially on overcast days. Rainfall is quite common, with precipitation occurring on nearly half of the days, leading to an overall moist atmosphere that can make the air feel heavier. This climate contrasts sharply with both the milder, drier conditions of early summer and the frosty chill of winter. Travelers looking to experience this unique weather pattern should consider visiting to appreciate the fresh landscapes and vibrant flora, while keeping in mind the varying conditions. For more insights into the region's climate, check out Keflavik Climate.