Last updated: March 17, 2025
In August, Hafnarfjörður experiences a mild and dynamic climate, with maximum temperatures reaching up to 19°C (66°F) while averaging around 11°C (52°F). The month sees a minimum temperature of 4°C (40°F), offering a refreshing chill to contrast the warmer summer days. Expect frequent rainfall during this time, accumulating to 90 mm (3.6 in) over approximately 14 days, resulting in an 87% humidity level that can make the air feel quite damp. Whether you're exploring the vibrant seaside town or delving into the natural wonders surrounding it, August's weather reflects the unique charm of Iceland's coastal beauty.
In Hafnarfjoerdur, August stands out as a pleasant transition into the late summer months, with temperatures that are notably milder compared to the deeper winter chill. The minimum temperature hovers around a comfortable 4°C (40°F), while the average reaches a pleasant 11°C (52°F), peaking with a maximum of 19°C (66°F). As the summer heat peaks in July, August’s warmth remains inviting, indicating an overall trend of increasing temperatures throughout the summer season. This gradual shift from the biting cold of winter to the refreshing embrace of late summer provides a lovely backdrop for outdoor activities and exploration in this enchanting part of Iceland. It’s during these mild days that visitors can fully appreciate Hafnarfjoerdur's stunning landscapes and vibrant culture.
In August, Hafnarfjörður experiences a moderate amount of precipitation, with 90 mm (3.6 in) falling over the month, spread across 14 days. This marks a slight increase from the drier conditions of July, which recorded 81 mm (3.2 in) with only 16 rainy days. As summer transitions towards fall, the rainfall begins to pick up, although August tends to maintain a relatively limited frequency of rainy days. This trend continues as September follows with a significant rise in precipitation to 163 mm (6.4 in) over 22 days, highlighting a notable shift towards wetter conditions that characterize the approach of autumn in this coastal region of Iceland. Overall, while August remains a relatively dry month compared to its predecessors, it paves the way for the increasingly soggy days that lie ahead.
In August, Hafnarfjörður, Iceland, experiences a notable increase in humidity, peaking at 87%. This marks a gradual upward trend that begins in the earlier summer months, where humidity levels hover around 82% to 86% in June and July. As the summer fades into autumn, humidity remains consistently high, with September and October also recording 87% and 88%, respectively. This rise in humidity throughout the summer sets the stage for a damp transition into the fall, making August one of the most humid months of the year, perfectly encapsulating the cool, coastal climate of this picturesque Icelandic town.
In August, Hafnarfjoerdur experiences a UV Index of 4, placing it in the moderate exposure category. This represents a slight dip from the high levels encountered in June and July, where the Index peaked at 6. With burn times of approximately 30 minutes, residents and visitors are reminded to take precautions, especially during peak sun hours. Overall, the trend from spring to summer shows a gradual increase in UV radiation, culminating in those high summer months, before tapering down as autumn approaches. For detailed insights and to plan sun safety accordingly, check the Hafnarfjoerdur UV Index.
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In Hafnarfjörður, Iceland, the August sunshine serves as a beautiful bridge between the vibrant summer months and the approaching autumn chill. With 297 hours of sunlight, August shines brightly, contributing to a gradual decline from July’s peak of 316 hours. This trend highlights the region's longer days during summer, as sunlight begins to taper off post-June’s impressive 338 hours. While the warmth of late summer lingers, it marks a significant drop from the sun-drenched days of May, which boasts 344 hours. As the year transitions, September shows a further decrease with 206 hours, emphasizing the fleeting nature of summer's light. The bright August sun is a reminder of the longer days enjoyed just weeks before, encouraging both exploration and reflection as the seasons change.
In Hafnarfjörður, Iceland, August is notably one of the sunniest months, but it ironically experiences its lowest chance of sunny weather, with only an 8% likelihood of sunshine. This stands in stark contrast to the earlier months of May, when the sun makes a promising appearance 42% of the time, creating a gradual build toward summer. However, as the year progresses into the summer, June and July see sharp declines in sunny days, with chances plummeting to 15% and 11%, respectively. This trend suggests that while August may bring the tail end of summer, cloud cover often takes precedence, making it one of the least sunny months in Hafnarfjörður. Fans of sun might find themselves yearning for the early summer days, as the chances for a bright August sky become increasingly slim.
In Hafnarfjoerdur, Iceland, the evolution of daylight duration throughout the year unveils a captivating trend. Starting with a mere 5 hours in January, the days gradually lengthen, reaching a peak of 20 hours in June. This surge continues into July, where daylight slightly decreases to 19 hours. As summer wanes, August sees a significant drop to 16 hours of daylight, signaling the onset of autumn. This decline continues into September, with daylight reducing to 12 hours, before tapering off further as winter approaches. The progressive transition from the long, bright summer days to the shorter, cozy winter hours encapsulates the unique charm of life in this northern paradise.
In August, Hafnarfjörður experiences a gentle breeze, with an average wind speed of 3.5 m/s (8 mph), marking a shift towards the calmer side of the annual wind spectrum. This month typically follows a gradual downward trend in wind speed that begins in late spring, reaching its yearly low just before the winds pick up again in the fall. Notably, August's winds are softer than those of the preceding months, including July's average of 3.6 m/s (8 mph) and significantly lower than the 5.0 m/s (11 mph) winds seen in the early winter months. As summer fades into autumn, the transition in wind speed heralds a more serene atmosphere, inviting residents and visitors alike to savor the last vestiges of summer’s warm embrace before the crispness of September brings a resurgence in gusty conditions.
The weather in Hafnarfjoerdur 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 Hafnarfjoerdur and find detailed weather information for every month.
In August, the weather in Hafnarfjordur is relatively mild, with temperatures ranging from a minimum of 4°C (40°F) to a maximum of 19°C (66°F) and an average of 11°C (52°F). The month sees about 90 mm (3.6 in) of precipitation over 14 days, accompanied by high humidity at 87%. In contrast, January brings much colder conditions, with temperatures dipping to a minimum of -11°C (13°F) and peaking at 10°C (51°F), averaging just 1°C (33°F). This winter month experiences more significant precipitation at 118 mm (4.6 in) spread across 16 days, while humidity remains slightly lower at 84%. For more details, you can explore Hafnarfjoerdur weather in January.
When comparing the weather in August and February, there are stark differences in both temperatures and overall conditions. August sees milder temperatures, with a minimum of 4°C (40°F), an average of 11°C (52°F), and a maximum of 19°C (66°F). Humidity is high at 87%, and precipitation occurs on about 14 days, totaling 90 mm (3.6 in). Conversely, February is much colder, with temperatures ranging from a minimum of -18°C (0°F) to a maximum of 9°C (48°F), and an average temperature of just 1°C (34°F). This month experiences more precipitation—135 mm (5.3 in) across 19 days—with a slightly lower humidity level of 82%. For a closer look at weather specifics, you can refer to Hafnarfjoerdur weather in February. Overall, August offers a more temperate climate, while February presents a harsh winter experience.
August generally offers milder temperatures compared to March, with average daytime highs reaching up to 19°C (66°F), while March struggles with a maximum of only 10°C (49°F). However, March's colder climate brings much lower minimum temperatures, dipping to -11°C (13°F), in contrast to August’s minimum of 4°C (40°F). Rainfall is relatively abundant in both months, with March experiencing slightly more precipitation at 105 mm (4.1 in) over 18 days, compared to August's 90 mm (3.6 in) over 14 days. Humidity levels are quite similar, with August being marginally more humid at 87%, while March sits at 85%. For more detailed information on March weather, you can visit Hafnarfjoerdur weather in March.
When comparing the weather in August and April, it becomes clear that April is generally colder, with minimum temperatures dropping to -9°C (16°F) compared to August's minimum of 4°C (40°F). The average temperature in April is 4°C (40°F), while August boasts a more comfortable average of 11°C (52°F). Precipitation is notably higher in April, with 138 mm (5.4 in) over 17 days, compared to August's 90 mm (3.6 in) over 14 days. Additionally, while humidity is slightly higher in August at 87%, April still maintains a significant level at 81%. For a detailed look at weather specifics, you can visit Hafnarfjoerdur weather in April.
In comparing the weather of August and May, we see distinct differences in temperature and precipitation. August boasts milder temperatures, with a minimum of 4°C (40°F), an average of 11°C (52°F), and a maximum of 19°C (66°F), whereas May experiences cooler conditions, ranging from a minimum of -3°C (27°F) to a maximum of 15°C (59°F), with an average of 7°C (44°F). Despite August being warmer, it has less precipitation, measuring 90 mm (3.6 in) over 14 days, compared to May's higher total of 124 mm (4.9 in) across 18 days. Additionally, humidity levels remain high in both months, with August at 87% and May slightly lower at 83%. For more detailed information on May's weather, you can visit Hafnarfjoerdur weather in May.
In comparing the weather of June and August in Hafnarfjörður, both months experience similar maximum temperatures reaching up to 19°C (66°F). However, August presents slightly milder average temperatures with a minimum of 4°C (40°F) and an average of 11°C (52°F), whereas June has a minimum temperature of 2°C (36°F) and an average of 9°C (49°F). June sees a bit more precipitation, accumulating 97 mm (3.8 in) over 17 days, compared to August's 90 mm (3.6 in) over 14 days. Humidity levels are higher in August at 87%, in contrast to June's 82%. For more detailed information, you can check Hafnarfjoerdur weather in June.
In comparing the weather between July and August, we see some notable differences. July boasts a slightly higher maximum temperature of 23°C (74°F) compared to August's maximum of 19°C (66°F), while both months have similar average temperatures around 11°C (52°F). Precipitation levels are also similar, with July receiving 81 mm (3.2 in) over 16 days, whereas August sees a bit more rain at 90 mm (3.6 in) over 14 days. Humidity remains quite high in both months, with July at 86% and August slightly higher at 87%. For more detailed information on July weather patterns, you can check Hafnarfjoerdur weather in July.
August typically offers milder temperatures compared to September, with minimums around 4°C (40°F) and an average of 11°C (52°F), reaching a maximum of 19°C (66°F). In contrast, September sees a drop in temperatures, with minimums plunging to -2°C (29°F) and an average of 8°C (47°F), peaking at 16°C (60°F). Additionally, September is noticeably wetter, with precipitation totaling 163 mm (6.4 in) over 22 days, compared to August's 90 mm (3.6 in) over 14 days. Both months experience high humidity levels of 87%, contributing to a damp atmosphere. For more detailed information on September weather, visit Hafnarfjoerdur weather in September.
In August, the weather is relatively mild, with temperatures ranging from a minimum of 4°C (40°F) to a maximum of 19°C (66°F), and an average of 11°C (52°F). This month experiences moderate precipitation of 90 mm (3.6 in) over about 14 days, coupled with a high humidity level of 87%. In contrast, October brings noticeably colder temperatures, starting from a minimum of -5°C (23°F) and peaking at 13°C (55°F), with an average temperature of 5°C (42°F). Rainfall increases to 111 mm (4.4 in) over 17 days, while humidity remains slightly higher at 88%. For more detailed information on the weather conditions in October, you can visit Hafnarfjoerdur weather in October.
In August, the weather in Hafnarfjordur showcases milder temperatures, with a minimum of 4°C (40°F) and an average of 11°C (52°F), peaking at a comfortable 19°C (66°F). The month sees a substantial amount of rainfall, totaling 90 mm (3.6 in) over about 14 days, coupled with high humidity at 87%. In contrast, November brings a notable shift, with temperatures dipping significantly, featuring a minimum of -9°C (16°F) and an average of just 2°C (36°F), while the maximum remains at 11°C (52°F). Rainfall increases to 112 mm (4.4 in) across 15 days, and humidity remains relatively high at 85%. For more insights on November's climate, check out Hafnarfjoerdur weather in November.
August and December present starkly contrasting weather conditions. In August, temperatures range from a cool 4°C (40°F) at night to a more comfortable 19°C (66°F) during the day, with an average of 11°C (52°F). The month experiences significant rainfall, totaling 90 mm (3.6 in) over 14 days and maintains a high humidity level of 87%. In contrast, December sees much harsher weather, with temperatures dropping to a minimum of -9°C (16°F) and peaking at around 10°C (50°F), resulting in an average of only 1°C (34°F). This month also features increased precipitation of 114 mm (4.5 in) over 16 days, but with slightly lower humidity at 84%. For more detailed information on December weather, you can visit Hafnarfjoerdur weather in December.
As August unfolds in Hafnarfjörður, visitors can anticipate a delightful shift in weather marked by milder temperatures and increased humidity. This month typically presents a warmer embrace compared to the cooler summer months, with the average temperature hovering around a comfortable level. However, the frequent rain showers—spanning about half the month—remind us of Iceland’s unpredictable nature. The combination of humid air and occasional rain creates a uniquely crisp atmosphere perfect for exploring the town's stunning landscapes. For a deeper dive into the climate nuances throughout the year, check out Hafnarfjoerdur Climate.