Last updated: March 24, 2025
September in Stromboli, Italy, is characterized by mild temperatures and occasional showers, making it a pleasant time to visit. With a maximum of 28°C (83°F) and an average of 25°C (76°F), the island enjoys warm days and cool evenings, while nighttime temperatures dip to a comfortable 19°C (66°F). Visitors should expect approximately 50 mm (2.0 in) of rainfall across 7 days, contributing to the lush landscapes that this volcanic gem is known for. The humidity levels, averaging around 68%, add a touch of Mediterranean warmth, perfect for exploring the island’s natural beauty and vibrant culture.
As summer gracefully transitions into autumn, September temperatures in Stromboli, Italy offer a delightful blend of warmth and comfort. With minimums settling at 19°C (66°F) and averages rising to 25°C (76°F), the island remains inviting for both sunbathers and adventurers alike. The maximum temperature reaching 28°C (83°F) ensures plenty of sunshine to enjoy the stunning landscapes and vibrant culture. This month strikes a perfect balance, marking a gradual decline from the scorching summer highs while still promising enjoyable weather for exploring the beauty of this volcanic paradise.
In September, Stromboli experiences a moderate precipitation amount of 50 mm (2.0 in) over approximately 7 days, marking a transition as summer winds down and autumn approaches. This increase from the drier summer months, such as May and June, reflects a shift toward a wetter climate pattern, which continues into October and November. Following the relatively low rainfall during the peak summer months, September's precipitation serves as a gentle precursor, foreshadowing the more substantial downpours that arrive in the latter part of the year, notably with October averaging 79 mm (3.1 in) and November hitting 117 mm (4.6 in). This trend emphasizes how September acts as a bridge, connecting the dry heat of summer to the wetter, vibrant landscapes of autumn on the stunning volcanic island.
As summer fades in Stromboli, Italy, September welcomes a gradual rise in humidity, settling at 68%. This marks a transition from the driest months of June through August, which recorded the lowest humidity levels at 64% and 61% respectively. As autumn approaches, the humidity begins to bounce back, with October seeing a notable increase to 73%. The fluctuations in humidity throughout the year highlight Stromboli's shift between drier summer air and the more humid conditions of winter, where levels begin to peak again, reaching 78% by January and December. This trend not only influences local weather patterns but also enriches the island's unique ecosystem.
In September, the UV Index in Stromboli, Italy settles at a robust 8, categorizing it as very high. This reflects a continuation of intense sunlight from the summer months, where July and August also peaked at a UV Index of 10. As the days begin to shorten and temperatures cool down, the burn time remains quick at just 15 minutes, urging residents and visitors to maintain sun safety protocols. This trend of elevated UV levels underscores the importance of protection against sun exposure well into the early autumn months. For more detailed insights into UV levels throughout the year, be sure to check out Stromboli UV Index.
UV Risk Categories
As summer gracefully fades into autumn, September in Stromboli, Italy, offers an enticing blend of warmth and light. With 339 hours of sunshine, this month marks a transition from the sun-drenched days of July and August, which peak at 420 and 395 hours respectively. Although the days begin to shorten, the lingering vibrancy is evident, as September still glows brighter than the cooler months ahead, including October with its 315 hours. This gentle decline invites visitors to enjoy the island's stunning vistas and vibrant culture, all basked in the soft glow of early fall sunlight. The rhythmic pattern of sunshine throughout the year, peaking in mid-summer, paints a picture of Stromboli as a year-round haven, where each season brings its own charm.
In Stromboli, Italy, the likelihood of sunny weather experiences some fascinating trends throughout the year. July and August shine the brightest, boasting an impressive 88% and 90% chance of sunshine, respectively, making them peak summer months ideal for sun-seekers. As September rolls in, the sun's presence remains strong with a solid 64% chance, effectively bridging the summer cheer into the early autumn. However, as the nights cool and autumn approaches, this sunny streak begins to wane, leading into the dramatically lower probabilities of sunshine in October and November, both at just 42%. Thus, September offers one of the last chances for sun worshippers to bask in warm rays before the weather shifts to the quieter, less sunny months ahead.
As September unfolds in Stromboli, Italy, the daylight begins to wane, marking the transition from the vibrant summer months to the softer glow of autumn. With 12 hours of daylight, this month sees a gentle decline from the peak light of 14 hours in June and July, reflecting nature's gradual shift towards shorter days. While the sunshine begins to recede, the lingering warmth of summer persists, providing ample opportunity to explore the island's stunning landscapes. This gradual tapering in daylight serves as a reminder of the cycles of the seasons, where each month offers its own unique charm and beauty.
As September arrives in Stromboli, Italy, the wind begins to settle into a gentle rhythm, with an average speed of 3.1 m/s (7 mph), mirroring the calm of the late summer days. This tranquil breeze is a notable decrease from the lively winds of earlier months, with speeds tapering off from 4.8 m/s in April to 3.6 m/s in May, and then dwindling further in the peak summer heat. As the island transitions into autumn, the winds will gradually start to pick up again, with October bringing a refreshing increase to 5.6 m/s (12 mph). This pattern not only highlights the natural ebb and flow of the season but also sets the stage for the invigorating gusts that will soon breathe life back into the landscape.
The weather in Stromboli 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 Stromboli and find detailed weather information for every month.
In September, the weather is notably warmer, with average temperatures ranging from a minimum of 19°C (66°F) to a maximum of 28°C (83°F), accompanied by moderate humidity levels of 68%. The month experiences about 50 mm (2.0 in) of precipitation over approximately 7 days, making it relatively drier compared to January. In contrast, January presents a much cooler climate, with temperatures dropping to an average low of 4°C (39°F) and a maximum of 18°C (65°F). Moreover, January sees higher precipitation levels at 75 mm (2.9 in) over 12 days and increased humidity at 78%. This stark difference in weather highlights the seasonal transition from the warmth of late summer to the chill of mid-winter. For further details, you can check Stromboli weather in January.
September and February present notably different weather conditions. In September, temperatures range from a mild minimum of 19°C (66°F) to a warm maximum of 28°C (83°F), with an average of 25°C (76°F). The month typically experiences about 50 mm (2.0 in) of precipitation over 7 days, coupled with a humidity level of 68%. In contrast, February sees cooler temperatures, with a minimum of 7°C (44°F) and a maximum of 17°C (64°F), averaging around 13°C (56°F). Precipitation increases slightly to 59 mm (2.3 in) over 9 days, while humidity is a bit higher at 71%. For more specific insights, you can refer to Stromboli weather in February.
September and March display contrasting weather patterns. In September, temperatures are relatively warm, with an average of 25°C (76°F) and maximums reaching up to 28°C (83°F), while the minimum temperature rarely drops below 19°C (66°F). Humidity is moderate at 68%, with about 50 mm (2.0 in) of precipitation across 7 days. In contrast, March experiences cooler temperatures overall, with an average of 13°C (57°F) and maximums of 18°C (64°F). The minimum temperature can fall to 8°C (48°F), and humidity is slightly higher at 70%. Additionally, March sees more precipitation, totaling 71 mm (2.8 in) over 9 days. For a closer look at March weather, check out Stromboli weather in March.
When comparing September and April weather, September is generally warmer, with average temperatures ranging from a minimum of 19°C (66°F) to a maximum of 28°C (83°F). In contrast, April's temperatures are cooler, averaging between 11°C (51°F) and 21°C (70°F). Both months experience similar precipitation levels, with September receiving 50 mm (2.0 in) and April slightly less at 45 mm (1.8 in), both spread over seven days. Notably, April has a higher humidity level at 73%, compared to September's 68%. For more details about April weather, you can check Stromboli weather in April.
In September, temperatures are generally warmer than in May, with averages reaching 25°C (76°F) and maximums hitting 28°C (83°F), while May sees lower averages of 19°C (66°F) and maximums of 25°C (78°F). Additionally, September experiences more precipitation, totaling 50 mm (2.0 in) over about 7 days, compared to May's 18 mm (0.7 in) over just 4 days. Despite the slightly lower average temperature in May, it has a higher humidity level of 72% compared to September's 68%. For more detailed information about weather conditions during this month, you can check Stromboli weather in May.
In comparing the weather of September and June, we can see some notable differences. September tends to have slightly warmer temperatures, with an average of 25°C (76°F) compared to June's average of 23°C (74°F). While September boasts a maximum of 28°C (83°F), June can reach higher at 30°C (85°F). Precipitation levels are markedly higher in September, with 50 mm (2.0 in) spread over about 7 days, whereas June receives just 23 mm (0.9 in) over 3 days, indicating that September is typically wetter. Humidity levels remain similar, with September at 68% and June at 67%. For a closer look at the weather specifics for June in Stromboli, you can check out Stromboli weather in June.
When comparing the weather in September to that of July, September tends to be slightly cooler, with average temperatures ranging from a minimum of 19°C (66°F) to a maximum of 28°C (83°F), compared to July's minimum of 21°C (70°F) and maximum of 30°C (86°F). September also experiences more rainfall, with a total of 50 mm (2.0 in) over 7 days, whereas July sees only 20 mm (0.8 in) across 3 days. Additionally, humidity is a bit higher in September at 68%, compared to July's 64%. For more detailed weather insights, you can check Stromboli weather in July.
In comparing the weather between August and September, it's evident that September experiences milder temperatures, with a minimum of 19°C (66°F) and an average of 25°C (76°F), compared to August's warmer minimum of 22°C (71°F) and an average of 27°C (81°F). Additionally, August records higher maximum temperatures, reaching up to 31°C (88°F), while September peaks at 28°C (83°F). Precipitation is also more frequent in September, with 50 mm (2.0 in) over 7 days, compared to August, which sees only 23 mm (0.9 in) over just 3 days. Finally, humidity levels rise in September to 68%, up from August's 61%. For a closer look at weather patterns, check out Stromboli weather in August.
In September, the weather is generally warmer, with average temperatures reaching up to 25°C (76°F) and maximums peaking at 28°C (83°F). This month experiences about 50 mm (2.0 in) of rainfall over 7 days, coupled with a humidity level of 68%. In contrast, October sees a slight decrease in average temperatures, with a minimum of 16°C (60°F) and an average of 21°C (70°F), while still reaching a maximum of 27°C (81°F). However, it is wetter, with 79 mm (3.1 in) of precipitation across 11 days and a rise in humidity to 73%. For more detailed insights, you can check out Stromboli weather in October.
September typically offers warmer temperatures, with an average high of 28°C (83°F) and a lower humidity of 68%. In contrast, November brings cooler weather, with average highs around 22°C (73°F) and significantly higher humidity levels at 77%. Additionally, November experiences more precipitation, totaling 117 mm (4.6 in) over 13 days, compared to September's 50 mm (2.0 in) across just 7 days. For more detailed insights into the weather during this month, you can check Stromboli weather in November.
September and December exhibit quite contrasting weather patterns. In September, temperatures are warmer, with an average around 25°C (76°F) and highs reaching up to 28°C (83°F). The month sees a total precipitation of 50 mm (2.0 in) over about 7 days, accompanied by a humidity level of 68%. In stark contrast, December experiences cooler temperatures, with an average of 15°C (59°F), dropping to a minimum of 9°C (49°F) and a maximum of 19°C (66°F). Additionally, December is wetter, receiving 118 mm (4.6 in) of precipitation over 14 days, alongside a higher humidity of 78%. For more details on December weather, you can check Stromboli weather in December.
As summer transitions into autumn, September in Stromboli offers a delightful mix of warmth and moderate humidity, providing a refreshing escape compared to the peak heat of July and August. With average temperatures settling around a pleasant 25°C (76°F), visitors can enjoy comfortable days perfect for exploration. Although there are a few rainy days, the total precipitation remains relatively low, allowing for plenty of sunshine amidst occasional cooling showers. This balance not only enhances the island's stunning landscapes but also creates an inviting atmosphere for those looking to experience the beauty of Stromboli without the summer crowds. For more insights on what to expect throughout the year, visit Stromboli Climate.