Last updated: March 17, 2025
September in Stykkishólmur, Iceland, presents a fascinating blend of cool temperatures and vibrant autumnal scenery. With a maximum temperature reaching 14°C (58°F) and an average of 8°C (48°F), the month showcases the gradual transition into winter. The minimum temperature can dip to 0°C (32°F), hinting at the approaching chill. Rainfall is a significant feature this month, with 155 mm (6.1 in) of precipitation over 19 days, creating a lush, if damp, environment. The high humidity level of 89% adds to the crisp, invigorating air, making September a captivating time to explore the natural beauty and unique charm of Stykkishólmur.
As September rolls into Stykkishólmur, Iceland, temperatures begin to show a gentle transition towards cooler days, reflecting the impending approach of autumn. With a minimum dipping to around 0°C (32°F) and a comfortable average settling at 8°C (48°F), this month marks a departure from the milder summer warmth. The maximum temperature is a pleasant 14°C (58°F), allowing for enjoyable outdoor activities against the stunning autumnal backdrop. September’s weather serves as a reminder that nature's palette is shifting, with crisp air and shorter days hinting at the winter months ahead. The gradual cooling compared to the summer highlights an inviting yet brisk atmosphere, perfect for those who cherish the beauty of Iceland's change of seasons.
September in Stykkisholmur, Iceland, marks a notable shift in precipitation patterns, as the area experiences its wettest month with an impressive 155 mm (6.1 in) of rainfall spread over 19 days. This surge represents a significant increase compared to the preceding summer months, where rainfall totals hovered around 70 mm, reflecting a transition to the wetter fall season. The frequency of rain also rises, suggesting that visitors and locals alike should be prepared for frequent showers. This combination of ample precipitation and increased rainy days highlights September as a pivotal time of year, setting the stage for the dramatic landscapes that characterize Iceland's autumn.
In September, Stykkishólmur experiences a notable humidity level of 89%, aligning closely with the high moisture levels seen in the earlier months of the year. The humidity in Stykkishólmur exhibits a subtle seasonal trend, beginning robustly in winter with 89% in both January and February, before peaking at 90% in March. As spring gives way to summer, humidity begins to ease slightly, reaching a low of 85% in June. However, as the year transitions back into fall, humidity levels rebound, returning to 89% by September, just before a slight dip to 88% in October. This consistent humidity throughout the year paints a picture of Stykkishólmur as a region with stable, moist air, providing a unique charm to its coastal climate.
As September rolls into Stykkisholmur, the UV Index settles at a moderate 3, reflecting a noticeable shift from the vibrant summer months. Following August's UV Index of 4, this slight decrease indicates a gradual transition toward shorter days and dwindling sunlight. During this time, sun exposure remains manageable, with a burn time of 30 minutes, allowing residents and visitors to enjoy outdoor activities while still being mindful of their skin health. It's a perfect opportunity to bask in the early autumn hues, but don’t forget to check local conditions for more details on UV levels—stay informed through Stykkisholmur UV Index.
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As summer fades into autumn, September in Stykkisholmur, Iceland, offers a beautiful transition marked by 176 hours of sunlight—a generous amount compared to the darker months ahead. Following the glorious peak of May with its 338 hours, the sun begins to wane gently, still providing ample daylight for outdoor adventures amidst stunning landscapes. This month shows a significant decrease compared to the sun-drenched July and August, yet September's light invites visitors to enjoy the crisp air and breathtaking vistas at a time when nature is on the brink of change. With October looming and only 123 hours of daylight projected, September serves as a delightful farewell to the sun, a final chance to savor those lingering daylight hours before winter settles in.
In September, Stykkisholmur experiences a modest likelihood of sunny weather, with only a 13% chance of sunshine, which mirrors the trend observed in both July and August. As summer draws to a close, this percentage reflects a general decline in sunny conditions compared to the brighter days of late spring, like May when the odds nearly double to 47%. With autumn approaching, the weather shifts, yet the consistent 13% in the early fall highlights a typical, if somewhat cloudy, transition for this coastal Icelandic town. Thus, while September may not bring abundant sunshine, it offers a charming blend of crisp air and stunning landscapes, making it an appealing time for outdoor exploration despite the overcast skies.
As summer fades, September in Stykkisholmur, Iceland, marks a noteworthy transition in daylight duration. The month begins with an abundance of 12 hours of daylight, a substantial decline from the sunlit heights of summer with nearly 21 hours in June. This gradual shortening from August’s 16 hours reflects the encroaching autumn, a prelude to the stark winter ahead. Illuminating the landscape in early September helps locals and visitors soak in the vibrant hues of nature's change, before daylight further dwindles to just 9 hours by October. This rhythmic ebbs and flows of sunlight not only shapes the scenery but also reflects the Icelandic spirit, resilient and vibrant even as the days grow shorter.
As September dawns in Stykkisholmur, Iceland, the winds begin to stir with a familiar intensity, averaging 6.5 m/s (15 mph). This invigorating breeze is a return to the gustier conditions seen earlier in the year, matching the wind speeds of January and March. Following the calm of summer, where the wind dipped to 3.7 m/s (8 mph) in August, September heralds a transition toward the brisk, sprawling gales typical of Iceland's autumn months. With October expected to escalate to 7.0 m/s (16 mph), the coastal town gears up for a more challenging wind experience, reminding residents and visitors alike of nature's untamed spirit that shapes this breathtaking landscape.
The weather in Stykkisholmur 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 Stykkisholmur and find detailed weather information for every month.
September and January weather exhibit notable differences, reflecting the transition from late summer to winter. In September, temperatures range from a chilly minimum of 0°C (32°F) to a more moderate maximum of 14°C (58°F), with an average of 8°C (48°F). The month is characterized by significant rainfall, totaling 155 mm (6.1 in) over 19 days, while humidity remains high at 89%. In contrast, January experiences colder temperatures, with a minimum of -10°C (14°F) and a maximum of 10°C (50°F), averaging around 0°C (33°F). Precipitation is lower in January, at 94 mm (3.7 in) across 16 days, yet the humidity stays constant at 89%. For a more detailed look at the January weather conditions, visit Stykkisholmur weather in January.
September and February present contrasting weather patterns. In September, temperatures range from a minimum of 0°C (32°F) to a maximum of 14°C (58°F), with an average of 8°C (48°F), while February sees colder conditions with temperatures dipping as low as -12°C (11°F) and peaking at 8°C (47°F), averaging around 0°C (33°F). Precipitation is more frequent in September, with 155 mm (6.1 in) falling over 19 days, compared to February's 101 mm (4.0 in) spread across 17 days. Both months share high humidity levels at 89%, but the chill of February creates a distinctly harsher environment. For a closer look at February weather specifics, you can check Stykkisholmur weather in February.
In comparing the weather of September and March, it's clear that both months experience relatively cool temperatures, but March is generally colder. September has an average temperature of 8°C (48°F), peaking at 14°C (58°F), while March's average drops to just 1°C (34°F), with a maximum of 8°C (48°F). Additionally, September is wetter, with 155 mm (6.1 in) of precipitation over 19 days, compared to March's 90 mm (3.5 in) over 15 days. Humidity levels are quite similar, with September at 89% and March slightly higher at 90%. For more detailed information on the weather patterns during this time, you can check Stykkisholmur weather in March.
When comparing the weather in September and April, notable differences emerge in temperature and precipitation. September enjoys a milder average temperature of 8°C (48°F), with daytime highs reaching up to 14°C (58°F), while April has a cooler average of 4°C (39°F) and maximum temperatures of 13°C (56°F). In terms of precipitation, September is wetter, receiving 155 mm (6.1 in) over 19 days, compared to 101 mm (4.0 in) across 16 days in April. Humidity levels are slightly higher in September at 89%, whereas April sits at 86% humidity. For more detailed information about April weather, you can check out Stykkisholmur weather in April.
When comparing the weather in September and May, notable differences emerge. September typically experiences slightly warmer temperatures, with averages peaking at 14°C (58°F) compared to May's maximum of 15°C (59°F). However, September holds a higher average temperature of 8°C (48°F) against May's average of 6°C (43°F). Humidity levels remain similar, with September at 89% and May at 87%, but September has significantly more precipitation at 155 mm (6.1 in) over 19 days, while May receives only 82 mm (3.2 in) across 14 days. For a more detailed look at May weather patterns, you can visit Stykkisholmur weather in May.
When comparing the weather in September and June, distinct differences emerge. September is generally cooler, with temperatures ranging from a minimum of 0°C (32°F) to a maximum of 14°C (58°F), while June experiences slightly warmer conditions, with minimum temperatures of 2°C (37°F) and highs reaching 18°C (64°F). Additionally, September sees significantly more rainfall, averaging 155 mm (6.1 in) over 19 days compared to June's 66 mm (2.6 in) over 13 days. Humidity levels are slightly higher in September at 89%, versus June's 85%, indicating a more damp atmosphere as summer fades. For a detailed look at June's climate, you can visit Stykkisholmur weather in June.
When comparing the weather in September and July, significant differences emerge. In September, temperatures range from a chilly 0°C (32°F) at night to a maximum of 14°C (58°F) during the day, with an average of 8°C (48°F). The month also sees higher precipitation, totaling 155 mm (6.1 in) over 19 days, accompanied by high humidity at 89%. In contrast, July offers milder weather, with minimum temperatures around 6°C (43°F), average temperatures of 11°C (52°F), and maximums reaching 19°C (66°F). Precipitation is also lower in July, with about 68 mm (2.7 in) over 14 days and a slightly lower humidity of 88%. For more details on July weather, you can check this link: Stykkisholmur weather in July.
September's weather is characterized by cooler temperatures compared to August, with average lows dropping from 5°C (40°F) in August to 0°C (32°F) in September. The maximum temperatures also decline, from 18°C (65°F) in August to 14°C (58°F) in September. Furthermore, September sees a significant increase in precipitation, totaling 155 mm (6.1 in) across 19 days, compared to August's 71 mm (2.8 in) over 12 days. Despite the slight increase in humidity from 88% in August to 89% in September, the overall climate shifts toward a much wetter and cooler atmosphere in September. For more details on August weather, you can visit Stykkisholmur weather in August.
September and October present a noticeable shift in weather patterns. In September, temperatures range from a minimum of 0°C (32°F) to a maximum of 14°C (58°F), with an average of 8°C (48°F). The month is relatively wet, receiving 155 mm (6.1 in) of precipitation over 19 days, and maintaining a high humidity level at 89%. By contrast, October sees cooler temperatures, with a minimum of -2°C (29°F), an average of 6°C (42°F), and a maximum of 11°C (52°F). Precipitation decreases to 91 mm (3.6 in) over 16 days, while humidity remains slightly lower at 88%. For more detailed insights on how October weather unfolds, check out Stykkisholmur weather in October.
September and November present quite distinct weather patterns. In September, temperatures range from a minimum of 0°C (32°F) to an average of 8°C (48°F), peaking at 14°C (58°F). The month experiences considerable precipitation, totaling 155 mm (6.1 in) over approximately 19 days, coupled with high humidity at 89%. In contrast, November sees cooler temperatures, with a minimum of -4°C (24°F) and an average of 2°C (37°F), reaching a maximum of 12°C (53°F). The total precipitation for November is lower at 84 mm (3.3 in) over 15 days, with slightly decreased humidity at 87%. For more detailed information about the weather in November, you can check Stykkisholmur weather in November.
When comparing the weather in September to that of December, a noticeable transition to colder conditions is observed. In September, temperatures range from a minimum of 0°C (32°F) to a maximum of 14°C (58°F), with an average of 8°C (48°F). The month also experiences higher precipitation, totaling 155 mm (6.1 in) over 19 days, accompanied by high humidity levels at 89%. By December, the weather becomes significantly chillier, with temperatures dipping to a minimum of -9°C (17°F) and an average around 1°C (35°F); the maximum temperature reaches only up to 10°C (50°F). Precipitation decreases to 89 mm (3.5 in) over 17 days, and humidity remains relatively stable at 87%. For more detailed information about December weather, you can visit Stykkisholmur weather in December.
As September unfolds in Stykkisholmur, the weather marks a notable transition from the warmth of summer to the cool embrace of autumn. With average temperatures dipping to a crisp 8°C (48°F) and maximum highs reaching only 14°C (58°F), this month introduces cooler days, particularly in contrast to the warmer summer months. The increased precipitation—155 mm (6.1 in) spread over 19 days—transforms the landscape into a vibrant tapestry of autumnal hues, while the high humidity at 89% adds to the briskness in the air. Autumnal adventures await, making September a remarkable time to experience the unique climate of this coastal gem. For a deeper dive into the weather patterns throughout the year, explore Stykkisholmur Climate.