Last updated: March 17, 2025
Experience the unique charm of Reykjavik, Iceland in August, where the maximum temperature can reach a comfortable 20°C (68°F), while the average temperature hovers around a cool 11°C (52°F). With minimum temperatures dipping to 5°C (41°F), visitors should be prepared for varying conditions. August is marked by 83 mm (3.3 in) of precipitation over approximately 15 days, resulting in a humidity level of 88% that adds to the vibrant, lush scenery. This cozy summer month showcases Iceland's unpredictable weather, making it an intriguing destination for adventurers and nature lovers alike.
In August, Reykjavik, Iceland experiences a delightful transition from the summer warmth to the cooler embrace of autumn. With temperatures ranging from a mild 5°C (41°F) at night to a comfortable 20°C (68°F) during the day, it provides ideal conditions for outdoor exploration. The city's average temperature of 11°C (52°F) reflects a peak in warmth compared to the earlier months of the year, signaling one of the best times to enjoy Reykjavik’s vibrant culture and stunning landscapes. As summer draws to a close, days are still relatively long and luminous, inviting both locals and visitors to soak in the picturesque surroundings before the chill of September begins to set in.
In August, Reykjavik experiences a moderate precipitation amount of 83 mm (3.3 in), slightly higher than the 75 mm (3.0 in) recorded in July. With 15 rainy days, August stands out as a transitional month, hinting at the wetter conditions to come in September when the precipitation jumps to 164 mm (6.5 in). This gradual increase in rainfall, combined with a decreasing trend in the summer months, reflects Reykjavik's shift from the relatively dry spells of late summer into the robust autumn rains. As the days shorten, August offers a reminder of the approaching changes in Iceland's dramatic climate, where fluctuations in weather patterns play a pivotal role in the landscape's transformation.
In Reykjavik, Iceland, the humid climate exhibits a noticeable trend throughout the year, peaking in the winter months and gradually decreasing in late spring and summer. August, with its humidity level at 88%, marks a slight rebound from July's 86%, as the city transitions from the warmer summer months to the crisp autumn air. Interestingly, this month remains significantly more humid than the late spring levels of 85% in May and 81% in June. As autumn approaches, humidity levels climb again, reaching 92% in September, a reminder of the city's consistently moist atmosphere. Overall, while summer brings a modest dip in humidity, the year-round maritime influence ensures that moisture remains a defining characteristic of Reykjavik’s climate.
In August, Reykjavik experiences a moderate UV Index of 4, indicating a slight increase in sun intensity compared to the previous months. With an approximate burn time of 30 minutes, locals and visitors alike should be mindful of sun exposure, especially as they enjoy the lingering summer days. This trend marks a gradual transition from the high levels observed in June and July, where the UV Index peaked at 6. As summer wanes, the UV Index will decrease again in September, but August still offers ample opportunities for outdoor activities while reminding everyone to stay sun safe. To learn more about UV levels in the region, check out Reykjavik UV Index.
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In August, Reykjavik basks in 282 hours of sunlight, a delightful peak of brightness before the days gradually shorten into autumn. This month showcases a notable abundance of daylight, continuing the upward trend seen from January's mere 32 hours to June's 312 hours, with sunlight reaching its climax in May. As summer stretches its warm embrace, August presents a vibrant atmosphere where locals and visitors alike can revel in outdoor activities and natural beauty. However, as the season transitions into September, the lingering warmth starts to wane, with the sun retreating to 187 hours, signaling the impending embrace of Iceland's hushed winter months. This rhythm of sunlight not only illuminates the landscape but also mirrors the ebb and flow of life in this enchanting Nordic capital.
In Reykjavik, Iceland, the likelihood of sunny weather takes a significant dip as summer progresses into August, with a mere 10% chance of sunshine. This trend reflects a broader pattern observed from the peak of late spring, where May boasts a more promising 46% chance of clear skies, down to the more dismal numbers of July and August, both hovering around the low teens. Surprisingly, even as the summer months roll in, the sun seems reluctant to stick around, indicating that despite being one of the warmest months, August often gives way to the gray skies more typical of Icelandic weather. As autumn approaches, the chances of sun begin to rise slightly again in September, but for those dreaming of a sun-kissed August adventure, it may be wise to pack for changing weather conditions.
As summer gently fades in Reykjavik, August brings a delightful balance of daylight, with approximately 16 hours of sun illuminating the landscape. This duration reflects a gradual decrease compared to the peak of 20 hours in June, but still offers ample opportunity for exploration and enjoyment of the vibrant Icelandic scenery. Following the bright months of May and June, when daylight began to stretch its arms, August marks the beginning of a subtle transition as days grow shorter, paving the way for the fall months ahead. While the golden rays of late summer linger, Reykjavik’s charm remains ever-present, inviting both locals and visitors to take full advantage of these bright August days before the sun retreats further into the horizon.
In August, Reykjavik experiences its calmest winds of the year, with an average speed of just 3.2 m/s (7 mph). This gentle breeze contrasts sharply with the winds of the preceding months, where speeds typically ranged from 3.4 to 4.7 m/s. As summer transitions to autumn, the wind begins to pick up again in September, reaching 4.8 m/s (11 mph), signaling a shift in the season. Overall, this pattern highlights the seasonal ebb and flow of Reykjavik's wind, with August standing out as a tranquil pause before the briskness of fall returns.
The weather in Reykjavik 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 Reykjavik and find detailed weather information for every month.
August and January present stark contrasts in weather conditions. In August, temperatures range from a pleasant 5°C (41°F) to a maximum of 20°C (68°F), creating a relatively mild climate with an average of 11°C (52°F). However, the month sees considerable precipitation, with 83 mm (3.3 in) spread over about 15 days and humidity averaging 88%. Conversely, January is much colder, characterized by minimum temperatures plunging to -13°C (8°F) and average temperatures around 0°C (32°F), peaking at a maximum of 10°C (50°F). This month also experiences more precipitation, totaling 113 mm (4.5 in) over 16 days, along with a higher humidity level of 96%. For a closer look at the specifics of January weather, visit Reykjavik weather in January.
August and February present strikingly different weather patterns. In August, temperatures range from a mild minimum of 5°C (41°F) to a pleasant maximum of 20°C (68°F), accompanied by moderate rainfall of 83 mm (3.3 in) over about 15 days, and an average humidity of 88%. In contrast, February is much colder, with temperatures dipping as low as -18°C (-1°F) and only reaching a maximum of 8°C (47°F). Precipitation in February is even higher at 125 mm (4.9 in), spread across about 18 days, while humidity climbs to a notable 95%. For more detailed insights, you can check Reykjavik weather in February.
August and March present contrasting weather conditions in Reykjavik. In August, temperatures range from a pleasant 5°C (41°F) to a maximum of 20°C (68°F), with an average of 11°C (52°F). The month is characterized by relatively high humidity at 88% and experiences 83 mm (3.3 in) of precipitation over about 15 days. In contrast, March is significantly colder, with temperatures ranging from a minimum of -13°C (9°F) to a maximum of 9°C (49°F), averaging only 1°C (34°F). This month sees even higher humidity at 94% and more precipitation at 103 mm (4.1 in) spread over 18 days. For more detailed insights, you can check Reykjavik weather in March.
When comparing the weather in August and April, we can see significant differences in temperature and precipitation patterns. August tends to be milder, with average temperatures ranging from 5°C (41°F) to 20°C (68°F), while April is cooler, characterized by average temperatures from -8°C (17°F) to 14°C (57°F). Although April experiences slightly higher precipitation, totaling 121 mm (4.8 in) over 18 days, August's weather still brings considerable wetness with 83 mm (3.3 in) spread across 15 days. Additionally, the humidity levels are quite similar, hovering around 88% in August and 87% in April, creating consistently moist conditions throughout both months. For those looking for detailed insights into April weather specifics, you can refer to Reykjavik weather in April.
When comparing the weather in August to that in May, we see some notable differences. August enjoys a milder average temperature of 11°C (52°F) with maximums reaching up to 20°C (68°F), compared to May's cooler average of 7°C (44°F) and highs of only 15°C (60°F). Precipitation is slightly lower in August, with 83 mm (3.3 in) over about 15 days, while May experiences higher rainfall totaling 113 mm (4.4 in) over 18 days. Both months feature high humidity levels, with August at 88% and May slightly less at 85%. For more detailed information, you can check Reykjavik weather in May.
When comparing the weather in June and August, it's clear that both months feature mild temperatures, but August tends to be slightly warmer. August has a minimum temperature of 5°C (41°F) and an average of 11°C (52°F), while June starts a bit cooler with a minimum of 2°C (36°F) and an average of 9°C (49°F). Precipitation levels are fairly similar, with June receiving 92 mm (3.6 in) over 16 days and August having 83 mm (3.3 in) across 15 days. Notably, August experiences a higher humidity level at 88%, compared to June's 81%. For those interested in exploring the specifics of June weather, you can find more details here: Reykjavik weather in June.
In comparing the weather between July and August, both months exhibit similar temperature averages, with August having a minimum of 5°C and a maximum of 20°C, compared to July's min of 4°C and max of 21°C. However, August tends to be slightly wetter, receiving 83 mm of precipitation over 15 days, while July has 75 mm across 16 days. Additionally, humidity levels remain high in both months, with August at 88% and July at 86%. For a more detailed overview of July's weather patterns, you can check Reykjavik weather in July.
In comparing the weather between August and September, we observe a notable shift in temperatures and precipitation. August tends to be milder with minimum temperatures around 5°C (41°F) and average highs reaching 20°C (68°F). In contrast, September experiences cooler conditions, featuring minimum temperatures dropping to -2°C (29°F) and a maximum of only 15°C (60°F). Additionally, September sees a significant increase in precipitation, with 164 mm (6.5 in) over 20 days compared to August's 83 mm (3.3 in) over 15 days. The humidity also rises slightly in September, reaching 92% compared to August's 88%. For more details, check Reykjavik weather in September.
August and October present contrasting weather conditions, with August experiencing milder temperatures and relatively higher averages. The minimum temperature in August hovers around 5°C (41°F), while in October, it drops significantly to -4°C (25°F). The average temperature in August is 11°C (52°F), compared to just 5°C (42°F) in October. Both months see a good amount of precipitation, with October slightly wetter at 96 mm (3.8 in) over 16 days, compared to August's 83 mm (3.3 in) across 15 days. Humidity levels are also higher in October, reaching 93%, compared to 88% in August. For more details, check out Reykjavik weather in October.
August and November present distinctly different weather patterns. In August, temperatures range from a mild 5°C (41°F) to a comfortable maximum of 20°C (68°F), making it a relatively pleasant month. However, it is also quite humid, with an average humidity of 88% and precipitation of 83 mm (3.3 in) spread over 15 days. In contrast, November brings much colder conditions, with average temperatures dropping to around 2°C (35°F) and a chilly minimum of -10°C (15°F). Additionally, November sees an increase in precipitation to 105 mm (4.1 in), with the same number of rainy days, but a slightly higher humidity level at 94%. For more detailed information, you can check Reykjavik weather in November.
August and December present starkly contrasting weather patterns. In August, temperatures range from a mild 5°C (41°F) at night to a pleasant 20°C (68°F) during the day, accompanied by relatively high humidity at 88%. The month sees about 83 mm (3.3 in) of precipitation over approximately 15 days, making it a typical late summer month in Reykjavik. In contrast, December brings a much colder climate, with temperatures dipping to a minimum of -13°C (9°F) and averaging around 0°C (33°F). Precipitation increases to 106 mm (4.2 in) across 17 days, while humidity rises to 95%. For more details on December weather in Reykjavik, visit Reykjavik weather in December.
As summer winds down, August in Reykjavik provides a unique blend of warmth and moisture that sets it apart from other months. With average temperatures reaching a comfortable 11°C, visitors can enjoy outdoor activities, although they should be prepared for the increased rainfall that typically accompanies this time of year. The combination of high humidity and noticeable precipitation across about half the month serves as a reminder of Iceland's unpredictable weather. This transitional period makes August an ideal time to experience the vibrant scenery and culture of Reykjavik, underscoring its appeal beyond just the sunny days. For more details about the seasonal characteristics that define this fascinating city, check out the comprehensive information on Reykjavik Climate.