Last updated: March 17, 2025
In August, Selfoss, Iceland experiences a mild climate characterized by a maximum temperature of 19°C (66°F) and an average of 11°C (52°F), with nighttime lows dipping to 5°C (41°F). This month sees a notable precipitation total of 96 mm (3.8 in), spread over approximately 13 days, indicating a relatively wet period. With an average humidity level of 87%, visitors can expect a cool, damp environment that highlights Iceland's stunning natural beauty, making it an intriguing destination for both adventurers and nature enthusiasts alike.
In Selfoss, Iceland, August marks a delightful transition into milder temperatures, setting the stage for late summer adventures. The month welcomes a minimum of 5°C (41°F) and an average temperature of 11°C (52°F), providing a comfortable climate for exploring the stunning landscapes. With a maximum reaching up to 19°C (66°F), August stands out as one of the warmest months of the year, making it a prime time for outdoor activities. This trend of gradually rising temperatures, beginning with the chilly depths of winter, showcases Iceland's unique seasonal shifts and sets an inviting backdrop to experience the country’s breathtaking natural beauty.
In August, Selfoss, Iceland, experiences a modest uptick in precipitation, collecting an average of 96 mm (3.8 in) over 13 days of rainfall. This marks a slight increase compared to the drier summer months of June and July, which saw only 89 mm and 86 mm respectively. The summer's tapering off in precipitation reveals a shift as the region prepares for the wetter autumn season ahead. Notably, September typically brings a significant surge, with levels almost doubling to 194 mm (7.7 in) over 21 days. This trend illustrates the transitional nature of the climate in Selfoss, where the warmth of summer gives way to the pronounced rainfalls of fall, capturing the dynamic weather patterns that define this scenic part of Iceland.
In Selfoss, Iceland, August marks a peak in humidity, reaching 87%, which ties with September for the highest level of the year. The trend shows a gradual rise in humidity from the earlier months, starting at 84% in January and maintaining a relatively stable range through the spring and early summer. Interestingly, there’s a notable spike during July, which sees humidity climb to 86%, leading into the wet and lush late summer landscape. As temperatures begin to cool in the fall, humidity remains high, hovering around 87% in both August and September, before tapering off slightly in the subsequent months. This pattern underscores Selfoss's characteristic dampness, contributing to its vibrant natural beauty throughout the year.
In August, the UV Index in Selfoss, Iceland reaches a moderate level of 4, indicating a slight increase in sun exposure awareness compared to the previous months of summer. As we transition from the high UV Index of 6 in July, the recommended burn time extends to 30 minutes. This moderate exposure reflects a gradual easing of intensity as autumn approaches, allowing residents and visitors alike to enjoy outdoor activities while still being mindful of sun protection. Similar trends are seen throughout the year, with UV Index values fluctuating based on the seasons. For more detailed information, visit Selfoss UV Index.
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In August, the sun shines brightly in Selfoss, Iceland, offering an impressive 298 hours of daylight, just a notch below the peak summer months. This month marks the tail end of a vibrant summer, where sunlight has gradually increased from a mere 39 hours in January to a robust 334 hours in May. The trend illustrates a steady climb towards the summer solstice, with each month contributing to a tapestry of longer days, peaking in June. As August wanes, the days begin to shorten, yet residents and visitors alike savor the lingering warmth and light before the descent into fall, where daylight plummets to 74 hours in November and just 29 hours by December. This dynamic shift showcases the unique allure of Iceland's changing seasons, making August a delightful time to enjoy the natural beauty of the region.
In Selfoss, Iceland, the prospect of basking in sunny weather reaches its peak in May, with a 42% chance of sunshine, but by the time August rolls around, that likelihood diminishes significantly to just 11%. This illustrates a notable trend where the summer months, especially June and July, persistently hover around a mere 15% chance of clear skies. As autumn approaches, the sun’s presence becomes even more fleeting, with September and October offering sunlight chances of only 13% and 25%, respectively. Thus, while August might suggest the continuation of summer, it starkly contrasts with the sunnier positions early in the season, highlighting the unpredictability of Icelandic weather as the year progresses.
In August, Selfoss, Iceland enjoys a generous 16 hours of daylight, marking a delightful transition from the height of summer's 20 hours of sunlight in June. This month serves as a bridge, where days gradually shorten, yet the energy of long summer evenings lingers, perfect for outdoor exploration and festivities. As August wraps up, sunlight gently wanes, paving the way for the softer light of autumn, with daylight dipping to 12 hours in September. The trend showcases a gradual yet striking shift in the northern skies, reflecting the dynamic rhythm of seasonal changes in this captivating region.
As summer wanes in Selfoss, Iceland, August brings a gentle sigh of wind, with average speeds dipping to 2.7 m/s (6 mph), the lowest of the year. This tranquil breeze contrasts with the brisker gusts of earlier months, showcasing a seasonal shift as nature quietly prepares for autumn. Notably, May also records a low with 2.9 m/s (6 mph), suggesting that late spring and summer provide a calm refuge compared to the invigorating winds of September, which surge back up to 4.1 m/s (9 mph). The year's wind patterns highlight a rhythmic transition from rugged winters, characterized by steady winds between 3.4 and 4.1 m/s, to the stillness of summer, before invigorating autumn breezes sweep in again.
The weather in Selfoss 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 Selfoss and find detailed weather information for every month.
August and January present strikingly contrasting weather conditions. In August, temperatures range from a chilly 5°C (41°F) at their minimum to a comfortable 19°C (66°F) at their peak, with an average of 11°C (52°F). The month sees a reasonable amount of rainfall, with 96 mm (3.8 in) over about 13 days and high humidity at 87%. Conversely, January introduces much harsher conditions, featuring temperatures that plummet from a minimum of -14°C (7°F) to a maximum of 10°C (50°F), averaging around 0°C (32°F). Rainfall is greater during this winter month at 142 mm (5.6 in), spread across 15 days, with slightly lower humidity at 84%. For more detailed information on January weather, you can visit Selfoss weather in January.
August and February present a stark contrast in weather conditions. In August, temperatures range from a mild 5°C (41°F) to a pleasant 19°C (66°F), accompanied by an average of 11°C (52°F). Humidity levels are high at 87%, with 96 mm (3.8 in) of precipitation spread over 13 days. In contrast, February is characterized by much colder temperatures, with lows plummeting to -16°C (3°F) and an average temperature of around 0°C (32°F), peaking at just 8°C (47°F). The month experiences even more precipitation, totaling 158 mm (6.2 in) over 19 days, along with slightly lower humidity levels at 82%. For a detailed look at February weather in Selfoss, visit Selfoss weather in February.
In comparing the weather between August and March, we see significant differences in temperature and precipitation. August enjoys a milder climate with average temperatures ranging from 5°C (41°F) to 19°C (66°F), while March is notably colder, with temperatures ranging from a frigid -15°C (5°F) to a maximum of only 9°C (49°F). Additionally, August experiences about 96 mm (3.8 in) of precipitation over 13 days, whereas March sees slightly more rainfall at 121 mm (4.8 in) across 18 days. The humidity remains relatively similar, with August at 87% and March at 85%. For more detailed insights into the weather during March, you can refer to Selfoss weather in March.
In comparing the weather between April and August, we find notable differences in temperature and precipitation. August experiences milder temperatures with a minimum of 5°C (41°F) and an average of 11°C (52°F), peaking at 19°C (66°F). Conversely, April is significantly chillier, with temperatures dipping as low as -12°C (11°F) and an average of 4°C (39°F). Precipitation levels also vary, as April sees more rainfall, totaling 140 mm (5.5 in) across 18 days, compared to August's 96 mm (3.8 in) over 13 days. Humidity is slightly higher in August at 87%, while April maintains a humidity level of 81%. For more details, you can check Selfoss weather in April.
When comparing the weather in August and May, we see notable differences in temperature and precipitation. August tends to be warmer, with average temperatures ranging from a minimum of 5°C (41°F) to a maximum of 19°C (66°F), whereas May has cooler averages, ranging from a minimum of -3°C (27°F) to a maximum of 16°C (61°F). In terms of rainfall, May experiences slightly more precipitation at 128 mm (5.0 in) over 18 days, compared to August's 96 mm (3.8 in) over 13 days. Both months have high humidity levels, with August at 87% and May at 83%. For a more detailed look at May weather, you can visit Selfoss weather in May.
When comparing the weather in August and June, August generally displays slightly warmer temperatures, with a minimum of 5°C (41°F), an average of 11°C (52°F), and a maximum of 19°C (66°F). In contrast, June has temperatures ranging from a minimum of 2°C (37°F) to a maximum of 19°C (67°F), with an average of 9°C (49°F).
Precipitation levels in August are relatively high at 96 mm (3.8 in) over 13 days, while June receives 89 mm (3.5 in) across 15 days. Additionally, August tends to be more humid, with humidity levels at 87%, compared to June's 82%. For more detailed information on June weather specifically, you can check Selfoss weather in June.
In comparing the weather between July and August, July tends to be slightly warmer, with average temperatures reaching up to 24°C (76°F) compared to August's maximum of 19°C (66°F). While both months experience relatively high humidity—87% in August and 86% in July—August does see an increase in rainfall, totaling 96 mm (3.8 in) over 13 days, compared to 86 mm (3.4 in) over 15 days in July. Overall, July offers warmer and somewhat drier conditions, making it a preferable month for outdoor activities. For more detailed weather specifics, you can check out Selfoss weather in July.
August and September display notable differences in weather patterns. In August, temperatures range from a minimum of 5°C (41°F) to a maximum of 19°C (66°F), with an average of 11°C (52°F). The month experiences approximately 96 mm (3.8 inches) of precipitation over 13 days, maintaining a consistent humidity level of 87%.
In contrast, September sees a drop in temperatures, with nightly lows hitting -2°C (29°F) and daily highs reaching only 16°C (61°F), resulting in an average temperature of 8°C (47°F). This month is significantly wetter, accumulating about 194 mm (7.7 inches) of rain over 21 days, while humidity remains steady at 87%. For a closer look at what to expect, you can check Selfoss weather in September.
In comparing the weather of August and October, we see a notable shift in temperatures and precipitation. August enjoys a milder climate with temperatures ranging from a minimum of 5°C (41°F) to a maximum of 19°C (66°F), while October experiences colder conditions, with minimums dipping to -5°C (23°F) and highs only reaching 13°C (55°F). Precipitation increases slightly in October, totaling 113 mm (4.4 in) over 16 days, compared to August's 96 mm (3.8 in) over 13 days. Humidity remains quite high in both months, with October at 88% and August at 87%. For a more detailed look at the climate in the fall, you can check out Selfoss weather in October.
August and November exhibit distinct differences in weather patterns. In August, temperatures range from a mild 5°C (41°F) to a comfortable maximum of 19°C (66°F), while November experiences much cooler conditions with temperatures dipping as low as -8°C (17°F) and peaking at 11°C (52°F). Precipitation is also more abundant in November, totaling 128 mm (5.0 in) over 15 days compared to August's 96 mm (3.8 in) spread over 13 days. Humidity levels are slightly lower in November at 85%, compared to the high humidity of 87% in August. For a more detailed look at weather conditions in November, you can check Selfoss weather in November.
August and December present distinctly different weather conditions in Selfoss. In August, temperatures range from a chilly 5°C (41°F) to a pleasant 19°C (66°F), with an average of 11°C (52°F), complemented by high humidity levels at 87%. This summer month also sees around 96 mm (3.8 in) of precipitation over approximately 13 days. In contrast, December plunges into winter, with temperatures dropping significantly, with a minimum of -11°C (12°F) and a maximum of only 9°C (49°F), averaging around 0°C (33°F). The precipitation rises to 137 mm (5.4 in) spread over 16 days, while humidity remains relatively high at 84%. For a more detailed overview of December weather, you can refer to Selfoss weather in December.
As August arrives in Selfoss, the weather takes on a unique character that sets it apart from the other months of the year. With temperatures generally warmer, averaging around 11°C (52°F) and peaking at a maximum of 19°C (66°F), this month offers a pleasant respite from the chill of winter. However, it’s not without its quirks; rainfall is quite common, with around 96 mm (3.8 in) falling across approximately 13 days, and humidity levels hover at a notable 87%. This combination results in a somewhat damp atmosphere, contrasting with the dry, crisp conditions of winter. For those keen to learn more about the climatic nuances that shape this region, visit Selfoss Climate.