Last updated: August 21, 2025
Experience the enchanting beauty of Skiathos, Greece in September, where the temperatures pleasantly range from a comfortable 17°C (63°F) to a soaring 29°C (84°F), with an average of 24°C (75°F) that invites outdoor adventures. The month sees about 62 mm (2.5 in) of rainfall spread over four days, ensuring that the island remains lush and vibrant. With humidity levels around 58%, the climate is perfect for sun-soaked days on the beach and picturesque strolls through charming streets. Whether you're relaxing under the sun or exploring the stunning landscapes, September offers a delightful atmosphere to savor the essence of Skiathos.
In September, Skiathos experiences a delightful transition from the peak summer heat, with average temperatures settling at a comfortable 24°C (75°F). Mornings begin with a mild 17°C (63°F), providing a refreshing start to the day, while afternoons can heat up to a pleasant 29°C (84°F). This month marks a subtle shift, as the island bids farewell to the high summer swelter, yet maintains a desirable warmth perfect for beach days and outdoor adventures. As the days slowly shorten, September beautifully blends the last whispers of summer with the cooler whispers of autumn, making it an idyllic time to explore this enchanting Greek paradise.
In September, Skiathos experiences a notable shift in its weather pattern, characterized by an increase in precipitation after the typically dry summer months. With 62 mm (2.5 in) of rainfall over approximately 4 days, this marks a transition from the hot, sun-drenched days of August, which saw only 26 mm in rainfall. As the island prepares for the cooler autumn, the renewed moisture not only nourishes the lush scenery but also suggests a gradual rise in precipitation frequency, with rainfall days increasing from just 2 in August to 4 in September. This moderate rainfall helps to rejuvenate the landscape, making September a beautiful time to visit for those who enjoy milder weather and a greener backdrop.
In September, Skiathos experiences a notable uplift in humidity, reaching around 58% after the drier summer months. This slight increase marks a transition from the comfortable low humidity of 51% in August, as the island begins to welcome the hints of autumn. The trend reveals a seasonal shift; while the summer months offer refreshing breezes and lower humidity, September serves as a bridge, maintaining a pleasant yet slightly muggy atmosphere. This change paves the way for the more humid months ahead, with October seeing a significant rise back to 73%, highlighting the island’s distinct climatic pattern as it moves from the sun-soaked heights of summer into the cozy embrace of fall.
As summer fades, September in Skiathos sees the UV Index gradually decline from the peak levels witnessed in the earlier months. With an index of 8, categorized as very high, sun exposure remains significant, allowing for just 15 minutes of burn time without protection. This trend follows a steady rise from January's moderate index of 3, highlighting a clear seasonal pattern where UV levels soar during the summer months, particularly in July and August when they hit a maximum of 10. As the sun begins to dip lower in the autumn sky, visitors should remain vigilant, enjoying the lingering warmth while still taking necessary precautions. For more detailed information, check out the Skiathos UV Index.
UV Risk Categories
As the summer months gradually fade, September offers a splendid continuation of sunshine in Skiathos, Greece, with an impressive 346 hours of sunlight. This marks a gentle decline from the peak of July, which boasted 426 hours, yet still radiates warmth and vibrant energy. With September's welcoming glow, visitors can bask in the tail-end of summer, enjoying idyllic beach days and picturesque sunsets. The weather remains delightful, creating an enchanting atmosphere that perfectly bridges the bustling months of high season and the serene calm of autumn. As daylight hours wane into October, which sees a further reduction to 306 hours, September stands out as a beautifully illuminated transition, inviting all to appreciate the lasting allure of this stunning destination.
As September rolls in, Skiathos, Greece, continues to bask in a pleasant 67% chance of sunshine, making it a wonderful time to enjoy the charming beaches and vibrant landscapes. This month marks a transition as summer starts to wane, yet it remains significantly sunnier than the cooler months that follow, such as October and November with their 41% and 34% chances respectively. After reaching peak sunshine levels in July and August, September maintains a favorable 64% likelihood of clear skies, providing visitors with a delightful opportunity to experience the island’s beauty before the autumn chill sets in.
In September, Skiathos welcomes a gentle transition from the vibrant summer months to the crispness of autumn, with 12 hours of daylight gracing the island. This slight decline from August's 13 hours signifies the subtle shift in season, yet the days remain long enough to enjoy the stunning beaches and picturesque landscapes. Following a gradual increase from January's 9 hours to a peak in the summer, daylight begins to recede, hinting at the cozy charm of fall. As the island settles into this enchanting shift, visitors can relish the warm sun while savoring the scenic beauty that Skiathos has to offer in this beautiful month.
As summer transitions into autumn, September in Skiathos brings a refreshing shift in the breeze, with an average wind speed of 5.4 m/s (12 mph). This marks a gentle increase from the languid summer months of June through August, where the winds were notably calm at around 3.1 to 3.9 m/s. The vibrant energy of September not only hints at the approaching fall but also provides the perfect backdrop for enjoying outdoor activities amidst the island's stunning scenery. With wind speeds gradually ramping up again, it's a time where the air feels alive and invigorating, making it an ideal moment for adventure seekers and nature lovers alike to explore the captivating charm of Skiathos.
Weather in Skiathos varies notably across the year, with each month offering distinct climate conditions. This page compares September’s weather to other months in Skiathos, focusing on differences in temperature, rainfall, humidity, and UV levels.
September weather is characterized by warmer temperatures, with average highs reaching 29°C (84°F) and a pleasant humidity level of 58%. It experiences relatively low precipitation, with about 62 mm (2.5 in) over just four days, making it an enjoyable month for outdoor activities. In contrast, January brings much cooler temperatures, with averages only reaching 11°C (52°F) and lows dipping to 1°C (33°F). The winter month also sees higher precipitation levels of 117 mm (4.6 in) spread over 12 days, contributing to increased humidity at 82%. For those interested in more detailed information, you can check Skiathos weather in January.
September's weather is much warmer and drier compared to February. With average temperatures around 24°C (75°F) and maximums reaching 29°C (84°F), September enjoys a pleasant climate, albeit with some humidity at 58% and light precipitation of 62 mm over just 4 days. In contrast, February sees significantly cooler temperatures, averaging only 12°C (54°F) and peaking at 17°C (64°F). It is also wetter, with 95 mm of rainfall spread over 10 days and higher humidity levels at 78%. For more detailed information on February weather, you can visit Skiathos weather in February.
In comparing the weather of September and March, we can see a distinct variation in temperature and precipitation. September boasts a milder climate with average temperatures ranging from a minimum of 17°C (63°F) to a maximum of 29°C (84°F), while March is considerably cooler, with temperatures averaging between 3°C (37°F) and 19°C (66°F). Additionally, September experiences less precipitation, with 62 mm (2.5 in) falling over about 4 days, compared to March, which sees 82 mm (3.2 in) over approximately 9 days. Furthermore, March has higher humidity levels at 76%, versus September's 58%. For more detailed information on the weather conditions during March, you can refer to Skiathos weather in March.
When comparing the weather in September and April, there is a significant difference in temperature and humidity levels. September enjoys warmer temperatures, with averages around 24°C (75°F) and maximums reaching up to 29°C (84°F), offering a pleasant climate for outdoor activities. In contrast, April temperatures are much cooler, with an average of 14°C (58°F) and maximums peaking at 21°C (69°F). While both months experience similar levels of precipitation—62 mm (2.5 in) in September and 62 mm (2.4 in) in April—the rain is more spread out in April, with rainfall occurring on six days compared to just four days in September. Additionally, April's higher humidity at 70% can make the cooler temperatures feel more damp, while September's lower humidity at 58% generally contributes to a more comfortable feel. For more specific insights into April weather, you can check Skiathos weather in April.
When comparing the weather in September and May, September tends to be warmer, with average temperatures ranging from a minimum of 17°C (63°F) to a maximum of 29°C (84°F). In contrast, May has cooler temperatures, with averages between 13°C (56°F) and 25°C (77°F). While both months experience precipitation over about four days, September sees more rainfall (62 mm or 2.5 in) compared to May's 31 mm (1.2 in). Additionally, humidity is higher in May at 71%, while September's humidity averages around 58%. For more details, you can check out Skiathos weather in May.
In September, the weather tends to be slightly warmer than in June, with average temperatures reaching 24°C (75°F) compared to June's average of 23°C (73°F). Both months experience maximum temperatures of around 29°C (84°F in September and 85°F in June), but September receives noticeably more precipitation, with 62 mm (2.5 in) over about 4 days, whereas June sees only 22 mm (0.9 in) over 2 days. Humidity levels remain fairly consistent, with September at 58% and June slightly higher at 61%. For more details on June weather, visit Skiathos weather in June.
In comparing the weather of September and July, we see some notable differences. September tends to be slightly cooler than July, with average temperatures ranging from a minimum of 17°C (63°F) to a maximum of 29°C (84°F) compared to July's minimum of 20°C (69°F) and maximum of 32°C (89°F). Both months experience relatively low precipitation, but September has slightly more with 62 mm (2.5 in) over 4 days, while July sees 58 mm (2.3 in) over just 2 days. Humidity levels are comparable, with September at 58% and July at 57%. For more details on July’s weather, you can check Skiathos weather in July.
In comparing the weather between August and September, September presents a more temperate atmosphere. With minimum temperatures dropping to 17°C (63°F) and an average of 24°C (75°F), it’s noticeably cooler than August, where minimums are around 21°C (71°F) and an average of 26°C (79°F). Humidity levels also increase in September to 58%, compared to a lower 51% in August, contributing to a slightly more comfortable feel. Additionally, September sees a greater amount of rainfall, with 62 mm (2.5 in) over four days, while August receives only 26 mm (1.0 in) over two days. For further details on August weather, visit Skiathos weather in August.
In September, the weather is generally warmer with temperatures ranging from a minimum of 17°C (63°F) to a maximum of 29°C (84°F), yielding an average of 24°C (75°F). This month sees about 62 mm (2.5 in) of precipitation over approximately 4 days, with a humidity level of 58%. In contrast, October cools down slightly, offering a minimum temperature of 14°C (58°F) and an average of 20°C (68°F), peaking at 26°C (79°F). Notably, precipitation increases to 83 mm (3.3 in) over 8 days, and the humidity rises to 73%. For more details on October weather, you can explore this link: Skiathos weather in October.
In September, the weather is warm and pleasant, with average temperatures reaching around 24°C (75°F) and maximums peaking at 29°C (84°F). This month experiences relatively low precipitation, totaling 62 mm (2.5 in) over about 4 days, making it a perfect time for outdoor activities with humidity at 58%. In contrast, November brings significant changes, with temperatures dropping to an average of 16°C (62°F) and maximums around 22°C (73°F). Precipitation increases to 80 mm (3.1 in) over 11 days, and humidity rises to 79%, indicating a much wetter and cooler environment. For more details on the weather in November, you can visit Skiathos weather in November.
September weather is characterized by warm temperatures, with a minimum of 17°C (63°F) and an average of 24°C (75°F), reaching a maximum of 29°C (84°F). This month experiences relatively low precipitation, totaling 62 mm (2.5 in) over just 4 days, and a comfortable humidity level of 58%. In contrast, December brings a significant drop in temperature, with lows of 7°C (45°F) and an average of 13°C (56°F), peaking at 19°C (67°F). The month sees increased rainfall, amounting to 117 mm (4.6 in) across 11 days, along with higher humidity at 81%. For more detailed insights about December conditions, check out Skiathos weather in December.
As summer gracefully transitions into autumn, September in Skiathos offers a delightful mix of warm weather and manageable humidity, making it a perfect time for beach lovers and outdoor enthusiasts. With temperatures still holding onto those summer vibes, the island sees a pleasant warmth accompanied by a refreshing breeze. While September experiences slightly more precipitation than the drier summer months, the rain typically amounts to only a few short showers, ensuring ample sunshine for outdoor activities. This month strikes a beautiful balance, offering visitors a comfortable climate to explore stunning landscapes and immerse themselves in local culture. For a deeper understanding of the island's weather patterns throughout the year, check out Skiathos Climate.