Last updated: March 17, 2025
September in Vestmannaeyjar, Iceland brings a blend of cool temperatures and notable precipitation. With a maximum temperature reaching 14°C (58°F) and an average of 10°C (50°F), the island experiences chilly days, while lows dip to a brisk 2°C (36°F). This month is characterized by intense weather, boasting 220 mm (8.7 in) of rain spread over 22 days, resulting in a high humidity level of 87%. Visitors can expect a misty, atmospheric ambiance, perfect for exploring the breathtaking landscapes and vibrant local culture, albeit layered in weatherproof attire!
As September arrives in Vestmannaeyjar, Iceland, the temperatures begin to shift, signaling the transition into autumn. The month greets visitors with minimum temperatures around 2°C (36°F), an average of 10°C (50°F), and a pleasant maximum peaking at 14°C (58°F). This slight increase from the cooler summer months hints at the gradual cooling trend, as the highs begin to taper off from August's warmer days. With a notable shift from the summer warmth to the crispness of fall, September showcases a refreshing climate that invites exploration of the island's stunning landscapes, adorned by the early whispers of changing foliage. As the days shorten, the gentle drop in temperature sets the perfect backdrop for experiencing the enchanting beauty of Iceland’s early autumn.
As summer gives way to autumn in Vestmannaeyjar, September emerges as a particularly wet month, boasting an impressive 220 mm (8.7 in) of precipitation over 22 days. This marks a noticeable uptick compared to the preceding months, as the island transitions from the milder, drier summer season. In fact, September's rainfall surpasses that of August by nearly 100 mm, serving as a reminder of the region's rugged climate. The increase in both precipitation volume and frequency of rainy days signals a shift, heralding the start of the wetter months ahead as temperatures drop and the landscape transforms under blanket of clouds and rain.
In September, Vestmannaeyjar experiences a notable peak in humidity, reaching 87%, a figure that mirrors the high humidity of August. This month marks a continuation of summer's lingering moisture, as the island transitions towards the cooler autumn months. The relative humidity remains consistently high during this period, with only slight fluctuations observed throughout the year. Following September, October sees an even higher level of humidity at 88%, indicating that the island's wet, maritime climate is both persistent and characteristic. Overall, the late summer and early autumn months highlight a trend of elevated humidity levels, making Vestmannaeyjar a uniquely damp and atmospheric destination during this time.
September in Vestmannaeyjar, Iceland, marks a transition as the UV Index shows a moderate level of 3, allowing for approximately 30 minutes of sun exposure before risking damage. This month follows a vibrant summer peak, where July and June recorded high UV levels (6), which required more caution due to a burn time of just 25 minutes. As autumn approaches, the UV levels drop from August's moderate 4, signifying that while the sun's intensity lessens, it's still important to be mindful of sun safety. With a gradual decline in the UV Index through the months, September’s conditions provide a gentle reminder to enjoy the outdoors while still protecting your skin. For more detailed information, visit Vestmannaeyjar UV Index.
UV Risk Categories
As summer draws to a close in Vestmannaeyjar, September brings a delightful transition with 198 hours of sunshine, marking a charming farewell to the sun-drenched days of summer. Following the peak of 324 hours in June, daylight begins to wane, but September's sunlight still lingers longer than in the colder months ahead. This gradual decline presents a stunning backdrop for exploring the islands, where the vibrant landscapes bathed in golden light invite both adventure and relaxation. After the bustling summer months, the sun's gentle embrace in September offers a perfect blend of warmth and tranquility, making it an ideal time to savor the natural beauty of this enchanting Icelandic locale.
As September ushers in the early hints of autumn in Vestmannaeyjar, the likelihood of sunny weather remains relatively modest, with only a 16% chance of sunshine. This marks a slight decrease from the summer months, where peaks were reached in May at 41%, only to dip notably in July and August. Interestingly, while the promise of sunlight wanes into the fall, September does still offer better odds than the drearier winter months, such as February with just 17%. Travelers to this enchanting archipelago should prepare for varying weather, embracing both the charm of sunshine and the mystique of Iceland's often cloudy skies.
As September arrives in Vestmannaeyjar, Iceland, the daylight begins to wane after the height of summer. With 12 hours of daylight, the month marks a notable shift from the peak of 20 hours in June, as the enchanting glow of long summer days gives way to the earlier sunsets of autumn. This transition reflects a gradual decrease, following a trend from the lengthy days of late spring and summer, through August’s 16 hours, down to October's anticipated 9 hours. As daylight diminishes, the island's captivating landscapes transform with the changing light, inviting locals and visitors alike to savor the last warm days of the season.
In September, Vestmannaeyjar experiences a noticeable shift in wind dynamics, with an average wind speed of 5.9 m/s (13 mph). This gentle breeze signals a transition from the summer calm, characterized by consistent, lower speeds in July and August at 4.4 m/s (10 mph). As the days grow shorter and autumn approaches, the winds begin to pick up slightly, foreshadowing the stronger gusts that will follow in October and November. Interestingly, while September marks a mild resurgence in wind intensity, it remains significantly lower than the winter months, where the winds often peak upwards of 7.0 m/s (16 mph). This rhythmic ebb and flow of wind speeds paints a vivid portrait of the island's shifting seasons, making September a month of delightful breezes and a hint of the brisk air to come.
The weather in Vestmannaeyjar 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 Vestmannaeyjar and find detailed weather information for every month.
September weather in Vestmannaeyjar is characterized by milder temperatures, with averages around 10°C (50°F) and a maximum of 14°C (58°F), making it a relatively warmer month. However, it also experiences considerable precipitation, totaling 220 mm (8.7 in) over 22 days, coupled with high humidity at 87%. In contrast, January sees colder conditions, with temperatures averaging around 3°C (38°F) and dipping to a minimum of -5°C (22°F). The precipitation is slightly less at 177 mm (7.0 in), spread over 17 days, and humidity remains around 84%. For more details on January weather, you can check Vestmannaeyjar weather in January.
When comparing the weather in September and February, notable differences emerge despite some similarities. September experiences a milder temperature range, with average temperatures around 10°C (50°F) and a maximum of 14°C (58°F), while February is considerably cooler, with an average of just 3°C (38°F) and a maximum of 10°C (49°F). Precipitation levels are relatively close, with September receiving 220 mm (8.7 in) and February slightly less at 212 mm (8.3 in), both spread over approximately 22 days. Additionally, September's humidity is higher at 87%, compared to February's 82%. For a more detailed look at February's weather, you can visit Vestmannaeyjar weather in February.
In September, the weather tends to be milder with average temperatures hovering around 10°C (50°F), while March experiences a chillier average of just 4°C (39°F). September also sees a higher maximum temperature of 14°C (58°F) compared to March's peak of 10°C (50°F). While both months are relatively damp, September has greater precipitation at 220 mm (8.7 in) over 22 days, compared to March's 165 mm (6.5 in) over 21 days. Humidity levels are similar, with September at 87% and March at 85%. For more specific details about March weather, you can refer to Vestmannaeyjar weather in March.
When comparing the weather in September and April, notable differences emerge. September tends to be milder, with average temperatures ranging from a minimum of 2°C (36°F) to a maximum of 14°C (58°F), while April is cooler, with temperatures ranging from a minimum of -7°C (20°F) to a maximum of 11°C (52°F). Additionally, September experiences more precipitation, totaling 220 mm (8.7 in) over 22 days, compared to April's 161 mm (6.3 in) across 19 days. Humidity levels are also higher in September at 87%, compared to 81% in April. For more detailed information, check out this link: Vestmannaeyjar weather in April.
When comparing the weather in September and May, September typically showcases slightly warmer temperatures, with an average of 10°C (50°F) compared to May's average of 7°C (45°F). However, May experiences a bit more chill, with a minimum temperature of 1°C (34°F) versus September’s minimum of 2°C (36°F). Precipitation is more abundant in September, reaching 220 mm (8.7 in) over 22 days, while May sees 143 mm (5.6 in) distributed over 19 days. Additionally, September's humidity is a touch higher at 87%, compared to May's 83%. For those interested in the specifics of May weather, you can find more information here: Vestmannaeyjar weather in May.
In comparing September and June weather, September tends to be cooler with temperatures ranging from a minimum of 2°C (36°F) to a maximum of 14°C (58°F), while June features slightly warmer temperatures, with a minimum of 5°C (41°F) and a maximum of 16°C (62°F). Additionally, September experiences significantly higher precipitation, totaling 220 mm (8.7 in) over 22 days, compared to June’s 105 mm (4.1 in) over 16 days. Humidity levels are also higher in September at 87%, compared to June's 82%. For more details, check the Vestmannaeyjar weather in June.
In comparing the weather of September and July, it is evident that September is significantly cooler, with average temperatures ranging from a minimum of 2°C (36°F) to a maximum of 14°C (58°F). In contrast, July sees milder conditions, with a minimum of 7°C (45°F) and a maximum of 18°C (65°F). Additionally, September experiences considerably higher precipitation, accumulating 220 mm (8.7 in) over 22 days, while July has only 109 mm (4.3 in) over 17 days. The humidity levels are quite similar, with September at 87% and July at 86%. For those interested in the specifics of July weather, you can find more details here: Vestmannaeyjar weather in July.
In comparing the weather between September and August, we observe a noticeable decline in temperatures as summer transitions into autumn. September experiences lower temperatures, with a minimum of 2°C (36°F) and an average of 10°C (50°F), compared to August's warmer minimum of 7°C (45°F) and average of 12°C (53°F). Precipitation also increases significantly in September, totaling 220 mm (8.7 in) over 22 days, while August sees considerably less rainfall at 117 mm (4.6 in) over only 14 days. Despite both months sharing the same humidity level of 87%, the shift in temperature and precipitation highlights the more variable and wetter conditions typical of September. For more detailed information, you can check Vestmannaeyjar weather in August.
In September, the weather is milder, with average temperatures ranging from 2°C (36°F) to 14°C (58°F), while October sees a slight drop, with temperatures between -2°C (29°F) and 12°C (54°F). September experiences more precipitation, totaling 220 mm (8.7 in) over 22 days, compared to October's 152 mm (6.0 in) across 18 days. Humidity remains high in both months, with September at 87% and October slightly higher at 88%. For a detailed look at October's climate, check out Vestmannaeyjar weather in October.
In comparing the weather of September and November, it's evident that November is cooler overall, with average temperatures dropping from 10°C (50°F) in September to just 4°C (40°F). While September experiences milder conditions with a maximum of 14°C (58°F), November sees a maximum of only 11°C (52°F) and can plummet as low as -4°C (24°F) at night. Interestingly, precipitation levels are somewhat lower in November at 172 mm (6.8 in) over 17 rainy days, compared to September's more substantial 220 mm (8.7 in) spread across 22 days. Humidity remains relatively high in both months, with September slightly wetter at 87% versus November's 85%. For more details on November weather, check out Vestmannaeyjar weather in November.
In September, the weather in Vestmannaeyjar is generally milder, with average temperatures ranging from a cool 2°C (36°F) at night to a pleasant 14°C (58°F) during the day. This month sees significant rainfall, with 220 mm (8.7 in) of precipitation over 22 days and high humidity at 87%.
In contrast, December brings much colder temperatures, with nighttime lows dipping to -4°C (26°F) and daytime highs averaging only 10°C (50°F). Although precipitation is somewhat lower at 189 mm (7.5 in) over 19 days, the humidity remains relatively high at 84%. Those interested in specifics can explore more about Vestmannaeyjar's December weather through this link: Vestmannaeyjar weather in December.
September in Vestmannaeyjar brings a significant shift in weather, transitioning from the milder summer months to a more brisk and unpredictable climate. With temperatures hovering around a cool average of 10°C, the days become noticeably shorter and the humidity remains high, creating a damp atmosphere. Precipitation is frequent, with nearly three weeks of the month seeing rain, resulting in a total of 220 mm. This makes September one of the wetter months in the region, setting it apart from the drier summer period. For those interested in understanding how the climate evolves throughout the year, be sure to explore Vestmannaeyjar Climate.