Last updated: March 17, 2025
September in Akranes, Iceland, presents a captivating blend of mild temperatures and ample precipitation, creating a unique atmosphere. The average temperature hovers around 8°C (47°F), with daytime highs reaching a comfortable 15°C (60°F), while nighttime can dip to a brisk -2°C (29°F). Rainfall is a frequent companion, with 164 mm (6.5 in) accumulating over the course of approximately 20 rainy days, contributing to the region's lush landscapes. This month also sees a notable humidity level of 92%, wrapping Akranes in a mysterious, misty charm, making it an enchanting destination for visitors who relish the beauty of Iceland's dynamic autumn weather.
September in Akranes, Iceland marks a subtle transition as summer bids farewell and autumn begins to set in. With minimum temperatures dipping to -2°C (29°F) and an average of 8°C (47°F), the month exhibits a noticeable cooling compared to the balmy days of August. The maximum temperatures reach a comfortable 15°C (60°F), inviting outdoor adventures amid the stunning fall foliage. This drop in temperature signals the onset of winter, yet September retains a crisp charm, making it an ideal time for exploring Akranes' scenic landscapes before the harsher conditions of the colder months arrive.
September in Akranes, Iceland, marks a notable shift in precipitation patterns, as this month sees a significant peak in rainfall with 164 mm (6.5 in) of precipitation, making it the wettest month of the year. This surge is accompanied by 20 days of rain, the highest number of rainy days observed in any month. Compared to the preceding summer months, where rainfall gradually decreased, September's abundance contrasts sharply with July's dry spell of only 75 mm (3.0 in) over 16 days. This transition underscores the approaching autumn, bringing lush green landscapes and a crisp atmosphere, as the region prepares for the colder months ahead. It’s a vivid reminder of Iceland's dynamic climate, where the balance between sunshine and rain continuously shapes its stunning scenery.
In September, Akranes, Iceland, experiences a noticeable shift in humidity, with levels reaching around 92%—a slight increase from the summer months. This rise reflects the onset of autumn, as the warm, dry air of summer gives way to cooler, more moisture-laden conditions. Following the relatively drier months of June and May, where humidity dropped to 81% and 85% respectively, September's figures indicate a return to the higher humidity typical of the early year. The trends suggest that while January boasts the year's peak at 96%, September serves as a transitional point, signaling the gradual approach of winter as humidity begins to stabilize around the 90% mark.
In Akranes, Iceland, the UV Index in September reflects a mild transition from the sun-soaked summer months. With a UV Index of 3, categorized as moderate, residents and visitors alike should be mindful of their skin protection during the day's peak hours, as the burn time is approximately 30 minutes. This marks a decrease from the high summer readings of 6 in June and July, showcasing how seasonal changes affect UV radiation levels. As the year progresses towards autumn, the UV Index steadily drops, leading to lower exposure categories. For those interested in understanding more about the UV situation throughout the year, check out the complete details at Akranes UV Index.
UV Risk Categories
As summer fades into autumn, September in Akranes, Iceland offers a delightful blend of lingering warmth and reduced sunlight, with 187 hours of sunshine gracing the month. This marks a noticeable drop from the vibrant peak of June and May, where sunshine hours soar above 300, but it's still a substantial amount compared to the deep winter months that follow. The transition from the longer days of early summer gradually leads into the shorter, crisp days of October, which only sees 134 hours of sun. September acts as a gentle reminder of summer's charm while hinting at the approaching winter, encapsulating the beauty of change within Akranes’ unique climate cycle.
When considering the likelihood of sunny weather in September in Akranes, Iceland, the data reveals a rather modest chance of about 13%. This places September among the cooler months, aligning closely with the summer's low sunlight levels seen in July and August, both of which hover around 10%. While the possibility of sunshine remains limited compared to the spring months like May, which boasts a much brighter 46% chance, it does see a slight increase from its predecessors in the early autumn months, hinting at a slow transition toward the sunnier weeks of October, with its 24% likelihood. Overall, expect September in Akranes to be a mix of crisp days and overcast skies, with only rare moments to bask in the sun.
As September unfolds in Akranes, Iceland, the length of daylight begins its steady decline, offering approximately 12 hours of brightness. This month serves as a bridge between the abundant light of summer, which peak in June at 20 hours, and the darker winter months ahead. Following the vibrant days of July and August, when daylight still lingers for 19 and 16 hours, respectively, September marks a shift towards the fall season. With daylight decreasing to 9 hours by October, this transition invites a softer, golden hue to the landscape, creating a beautiful backdrop for autumn adventures before the long nights of winter set in.
As summer transitions to autumn, September in Akranes, Iceland, brings a refreshing change in the air, marked by an increase in average wind speed to 4.8 m/s (11 mph). This gentle breeze contrasts sharply with the calmer days of August, where winds dipped to 3.2 m/s (7 mph), and reflects a broader pattern of seasonal variation. While winter months like January and February showcase slightly stronger winds at around 4.7 m/s and 4.4 m/s respectively, September stands out as a significant turning point, heralding the onset of autumn's brisker atmosphere. The wind picks up from the languid summer, invigorating the landscape and inviting residents and visitors alike to embrace the crispness of the changing season.
The weather in Akranes changes throughout the year, offering a unique experience in each season. Below is a month-by-month comparison of September's weather with other months, highlighting differences in temperature, precipitation, and other key factors. Click on each section to discover seasonal trends in Akranes and find detailed weather information for every month.
September and January exhibit contrasting weather patterns. In September, temperatures range from a chilly -2°C (29°F) to a mild 15°C (60°F), with an average of 8°C (47°F). The month experiences significant rainfall, totaling 164 mm (6.5 in) over 20 days, accompanied by high humidity at 92%. In stark contrast, January presents much colder conditions, with temperatures dipping as low as -13°C (8°F) and averaging around 0°C (32°F), reaching a maximum of 10°C (50°F). While precipitation is lower at 113 mm (4.5 in) over 16 days, humidity slightly increases to 96%. For further insights into January's weather conditions, check out Akranes weather in January.
September and February in Akranes present contrasting weather patterns. In September, temperatures range from a minimum of -2°C (29°F) to a maximum of 15°C (60°F), with an average of 8°C (47°F). The month experiences considerable precipitation, totaling 164 mm (6.5 in) over 20 days, coupled with high humidity at 92%. In comparison, February is much colder, with temperatures dipping from a minimum of -18°C (-1°F) to an average of 0°C (33°F) and reaching a maximum of only 8°C (47°F). This month sees slightly less precipitation at 125 mm (4.9 in) across 18 days, and humidity is slightly higher at 95%. For more detailed climate insights, visit Akranes weather in February.
September and March present contrasting weather experiences. In September, temperatures range from a minimum of -2°C (29°F) to a maximum of 15°C (60°F), with an average temperature of 8°C (47°F). The month is characterized by significant precipitation, totaling 164 mm (6.5 in) over approximately 20 days, and consistent humidity at 92%. In comparison, March is colder, with temperatures dipping to a minimum of -13°C (9°F) and reaching up to 9°C (49°F), averaging just 1°C (34°F). The precipitation in March is lower, at 103 mm (4.1 in) across 18 days, but the humidity is slightly higher at 94%. For a detailed look at the weather specifics in March, check out Akranes weather in March.
When comparing the weather in September and April, September tends to be milder with an average temperature of 8°C (47°F) and daytime highs reaching 15°C (60°F), whereas April is cooler, featuring an average temperature of 4°C (40°F) and maximums of 14°C (57°F). Both months experience significant rainfall, but September sees more precipitation at 164 mm (6.5 in) over 20 days compared to April's 121 mm (4.8 in) over 18 days. Additionally, September has a slightly higher humidity level at 92%, while April's humidity is around 87%. For more details on April weather specifically, you can check Akranes weather in April.
September and May in Akranes both showcase mild temperatures, with maximums reaching 15°C (60°F) in both months. However, September tends to be slightly warmer on average at 8°C (47°F) compared to May's average of 7°C (44°F). While both months experience comparable minimum temperatures, September sees more precipitation at 164 mm (6.5 in) over 20 days, compared to May's 113 mm (4.4 in) across 18 days. Additionally, September's higher humidity at 92% creates a more damp atmosphere than May's 85%. For more detailed information, you can check Akranes weather in May.
In comparing the weather between September and June, it's clear that September tends to be cooler and wetter. The average temperature in September hovers around 8°C (47°F) with highs reaching only 15°C (60°F), while June enjoys slightly warmer temperatures, averaging 9°C (49°F) with maximums of 18°C (65°F). Additionally, September experiences significantly more precipitation, with 164 mm (6.5 in) spread over 20 days, compared to June's 92 mm (3.6 in) over 16 days. Humidity levels are also higher in September at 92%, as opposed to June's 81%. For a closer look at the weather specifics in June, you can refer to Akranes weather in June.
September weather is markedly cooler than July, with average temperatures ranging from a minimum of -2°C (29°F) to a maximum of 15°C (60°F), compared to July's milder conditions of 4°C (40°F) to 21°C (71°F). Additionally, September experiences significantly higher precipitation, with 164 mm (6.5 in) over 20 days, whereas July sees just 75 mm (3.0 in) over 16 days. The humidity is also slightly higher in September at 92%, compared to 86% in July, contributing to a distinctly different atmospheric feel as summer transitions to autumn. For more insights into July weather, check Akranes weather in July.
In comparing the weather between August and September, it is evident that September brings a significant drop in temperature, with averages shifting from 11°C (52°F) in August to just 8°C (47°F). The maximum temperatures also decline sharply, from 20°C (68°F) in August to a mere 15°C (60°F) in September. Additionally, September experiences more precipitation, totaling 164 mm (6.5 in) over 20 days, compared to August's 83 mm (3.3 in) over 15 days. The humidity is slightly higher in September at 92%, compared to 88% in August. This transition reflects the onset of autumn as summer warmth fades away. For a detailed look at August weather, check Akranes weather in August.
September and October present a noticeable transition in weather patterns. In September, temperatures range from a minimum of -2°C (29°F) to a maximum of 15°C (60°F), with an average of 8°C (47°F). The month is characterized by significant rainfall, totaling 164 mm (6.5 in) across 20 days, coupled with high humidity at 92%. In contrast, October sees slightly colder temperatures with a minimum of -4°C (25°F) and a maximum of 13°C (56°F), as well as a lower average of 5°C (42°F). Rainfall decreases to 96 mm (3.8 in) over 16 days, with humidity remaining relatively high at 93%. Overall, while both months are cool and wet, October tends to be a bit colder and less precipitation-heavy than September. For more detailed insights, check out Akranes weather in October.
In September, temperatures range from a chilly -2°C (29°F) at night to a mild 15°C (60°F) during the day, averaging around 8°C (47°F). The month sees considerable precipitation, totaling 164 mm (6.5 in) over 20 days, with high humidity levels averaging 92%. In contrast, November's temperatures drop further, with a minimum of -10°C (15°F) and a maximum of 11°C (53°F), leading to a cooler average of 2°C (35°F). Precipitation is less frequent, amounting to 105 mm (4.1 in) spread over 15 days, while humidity remains high at 94%. For a deeper look into November's weather specifics, refer to Akranes weather in November.
In comparing the weather conditions between September and December, it is evident that December is significantly colder. September boasts milder temperatures with an average of 8°C (47°F) and a maximum of 15°C (60°F), while December sees temperatures drop to an average of 0°C (33°F), with minimums plummeting to -13°C (9°F). Additionally, September experiences more precipitation, totaling 164 mm (6.5 in) over 20 days, compared to December’s 106 mm (4.2 in) across 17 days. Despite lower precipitation, December's humidity remains high at 95%, slightly above September’s 92%. For more information about weather specifics during this month, you can visit Akranes weather in December.
As September unfolds in Akranes, the transition to autumn becomes palpable, marked by a significant drop in temperatures and an increase in precipitation compared to the summer months. With the average temperature hovering around 8°C (47°F), the month presents a refreshing chill, inviting layers into daily attire. Rain becomes a frequent companion, gracing the area on about 20 days, contributing to the monthly total of 164 mm (6.5 in) of precipitation—a stark contrast to the drier, sunnier days of summer. Additionally, humidity levels soar to 92%, enhancing that crisp, brisk feel in the air. This is a time when nature shifts its palette, making September in Akranes an enchanting if a bit wet, harbinger of the winter ahead. For an in-depth look at the climate throughout the year, explore Akranes Climate.