Last updated: August 21, 2025
Experience the enchanting weather of Ydra, Greece, in September, where warm days and mild evenings create the perfect atmosphere for exploration. With maximum temperatures reaching up to 30°C (86°F) and an average of 25°C (77°F), enjoy the sun as the beautiful island transitions into autumn. The nights, cooling down to a pleasant 18°C (65°F), invite you to indulge in evening strolls. Despite only two days of rainfall totaling 25 mm (1.0 in), the humidity level at 65% adds to the island's allure, ensuring a refreshing breeze throughout your stay. Whether you’re lounging by the water or wandering through historic streets, September offers an idyllic backdrop for your Greek island adventure.
In September, Ydra, Greece, embraces the transition from the sweltering summer heat to a more temperate climate. With minimum temperatures around 18°C (65°F) and maximums reaching 30°C (86°F), the island offers a delightful balance of warmth and comfort. The average temperature of 25°C (77°F) invites visitors to enjoy outdoor activities and explore the stunning landscapes without the oppressive heat of July and August. As the month progresses, the pleasant evenings become ideal for dining al fresco, allowing travelers to savor the beauty of the Mediterranean while basking in the comfortable temperatures that mark this beautifully transitional time of year.
In September, Ydra, Greece experiences a noticeable resurgence in precipitation, receiving 25 mm (1.0 in) of rain over just two days. This uptick marks a shift from the arid months of summer, which saw negligible rainfall, and serves as a precursor to the wetter autumn months ahead. Compared to the preceding summer, September's precipitation is significantly higher, indicating a transition towards the more humid conditions typical of the fall. As the island's landscape begins to embrace the moisture, the gentle arrival of rain prepares the terrain for the lush greenery that will bloom in the subsequent months. This seasonal shift is not only vital for nature but also enhances the island's charm as it escapes the post-summer dryness.
As September arrives in Ydra, Greece, the humidity typically settles at a comfortable 65%, marking a subtle transition from the drier summer months. Following the peak dryness of August, with levels dropping to 63%, September brings a slight uptick in moisture, hinting at the upcoming autumn. This month acts as a bridge, as humidity gradually rises through the fall, reaching 72% by October. Overall, the trend shows a clear seasonal shift; while winter and spring months boast higher humidity levels, with January and February averaging around 76% and 75% respectively, the summer weeks typically offer a reprieve, with July and August dipping to their lowest at 68% and 63%. As humidity stabilizes in September, it signals the changing landscape of Ydra, blending the warmth of summer with the refreshing embrace of autumn.
In September, Ydra, Greece, maintains a notably high UV Index of 8, categorizing it as very high, with a burn time of only 15 minutes under direct sunlight. This marks a gradual decline from the peak of 10 during the summer months, yet the exposure remains significant as the days begin to shorten. Travelers should continue to take precautions, such as wearing sunscreen and protective clothing, to guard against harmful UV rays. With its stunning coastal beauty, Ydra entices visitors even as the UV intensity starts to ease, making it essential to stay informed about sun safety. For more details, check the comprehensive guide here: Ydra UV Index.
UV Risk Categories
September in Ydra, Greece, offers a delightful transition into autumn with an average of 348 hours of sunshine, reflecting the tail end of the summer’s radiant glow. Following the peak of 422 hours in July, sunshine gradually tapers off in August, yet September still basks in an abundance of sunlight, outshining the months preceding it like January and February. This trend showcases a lingering warmth that invites visitors to explore the island's vibrant charm and scenic beauty, as the days remain bright and temperate, perfect for outdoor adventures and leisurely strolls along the picturesque coastline. As the season shifts, Ydra continues to offer a sun-drenched allure, making September an idyllic time to experience its magical landscapes.
In September, Ydra, Greece, enjoys a promising likelihood of sunny weather, with a robust 82% chance of sunshine. This month marks a delightful transition from the peak summer heat of July and August, both boasting an impressive 97% sun probability, to a more temperate climate that still favors outdoor activities. As the days start to cool slightly, September retains a significant amount of sunshine, continuing the trend of high visibility experienced throughout the summer months. With this favorable weather pattern, visitors can expect to bask in warm, sunny days perfect for exploring the island's stunning scenery and vibrant culture, while still avoiding the intense heat of mid-summer.
As summer gives way to autumn, September in Ydra, Greece experiences a gentle decline in daylight, with 12 hours of sunshine illuminating the picturesque landscapes. The month marks a transition from the peak summer brightness of 14 hours in July and August, as daylight subtly shortens. This gradual decrease in daylight serves as a reminder of the changing seasons, with earlier sunsets inviting cozy evenings and the beauty of autumn hues to emerge. Following September's moderate light levels, the days continue to shorten, leading into October's 11 hours of daylight, setting the stage for the cooler months ahead.
As autumn begins to whisper through the island of Ydra, September brings a gentle breeze with an average wind speed of 5.0 m/s (11 mph), slightly invigorating compared to the calmer summer months. This transitional period marks a shift from the mellow winds of June and July, which barely stayed above 3.2 m/s, to a more lively atmosphere reminiscent of the spring months. Notably, September’s winds set the stage for October's return to 6.3 m/s (14 mph), hinting at the seasonal shift while still allowing the lingering warmth of summer to grace the shores. The consistent uptick in wind later in the year suggests that Ydra's weather is preparing for a brisker transition into autumn, making it an ideal time for visitors to enjoy both the beauty of the changing landscape and the refreshing coastal currents.
Weather in Ydra varies notably across the year, with each month offering distinct climate conditions. This page compares September’s weather to other months in Ydra, focusing on differences in temperature, rainfall, humidity, and UV levels.
September typically enjoys mild to warm temperatures, with average highs around 25°C (77°F) and minimal precipitation, averaging just 25 mm (1.0 in) over two days. The humidity is moderate at 65%, creating a pleasant atmosphere for outdoor activities. In contrast, January brings a significant drop in temperatures, with average highs of only 12°C (54°F) and lows around 4°C (39°F). This month is also wetter, seeing around 56 mm (2.2 in) of precipitation over eight days and higher humidity levels at 76%. For a more detailed look at January's climate, check out Ydra weather in January.
September experiences milder and warmer conditions compared to February. With average temperatures peaking at 25°C (77°F), it offers a pleasant climate characterized by low precipitation of just 25 mm (1.0 in) over only 2 days, and humidity around 65%. In contrast, February is significantly cooler, with average temperatures ranging from a minimum of 6°C (42°F) to a maximum of 18°C (64°F). This month sees more frequent rain, accumulating 50 mm (2.0 in) across 7 days, and higher humidity levels at 75%. For more details on February weather, you can refer to Ydra weather in February.
In September, the weather is warm and pleasant, with average temperatures hovering around 25°C (77°F) and maximums reaching up to 30°C (86°F). The month experiences minimal rainfall, with only 25 mm (1.0 in) across just two days, contributing to a comfortable humidity level of 65%. In contrast, March presents cooler temperatures, with minimums around 6°C (43°F) and an average of 14°C (57°F), peaking at 18°C (65°F). March is also wetter, seeing 34 mm (1.3 in) of precipitation over four days, and a higher humidity of 74%. For more details on the weather during this month, visit Ydra weather in March.
September and April present quite contrasting weather patterns. In September, temperatures are warmer, with averages around 25°C (77°F) and highs reaching 30°C (86°F), while humidity sits at a comfortable 65%. In contrast, April brings cooler weather, with an average temperature of 16°C (61°F) and maximums of only 22°C (71°F), alongside slightly higher humidity at 75%. Both months experience modest precipitation, with September receiving 25 mm over 2 days and April slightly less at 21 mm over 3 days. For more detailed insights into April weather, you can check Ydra weather in April.
In September, temperatures rise notably with a minimum of 18°C (65°F) and an average of 25°C (77°F), peaking at a warm 30°C (86°F). This month experiences higher precipitation levels at 25 mm (1.0 in) over two days, accompanied by a humidity of 65%. In contrast, May offers milder conditions with lower temperatures, featuring a minimum of 15°C (59°F) and a maximum of 25°C (77°F). Precipitation is also more manageable in May, recording only 10 mm (0.4 in) across one day, though humidity levels are slightly higher at 77%. For a more detailed look at May weather in Ydra, check out Ydra weather in May.
In September, the weather typically features a warmer climate with average temperatures reaching 25°C (77°F) and maximum highs of 30°C (86°F), compared to June, which has a slightly cooler average of 23°C (74°F) and a maximum of 29°C (84°F). Both months share the same minimum temperature of 18°C (65°F), but September is characterized by a bit more rainfall, recording about 25 mm (1.0 in) over 2 days, while June experiences only 6 mm (0.2 in) of precipitation over just 1 day. Additionally, humidity levels are lower in September at 65%, compared to June's 71%, making September feel more comfortable despite the warmer temperatures. For more details about weather conditions in June, you can refer to Ydra weather in June.
In comparing the weather between July and September, we see some notable differences. July typically features warmer temperatures, with a minimum of 22°C (72°F) and an average of 26°C (80°F), peaking at 32°C (89°F). This month also boasts very little precipitation, averaging just 1 mm (0.0 in), and experiences no rainy days, resulting in a humidity level of 68%. In contrast, September has milder temperatures, with a minimum of 18°C (65°F) and an average of 25°C (77°F), reaching a maximum of 30°C (86°F). This month is slightly more humid at 65% and sees a small amount of rain, accumulating to 25 mm (1.0 in) over 2 days. For a more detailed view of typical conditions, you can explore Ydra weather in July.
In comparing the weather between August and September, we see a noticeable shift in temperatures and precipitation. August experiences warmer nights with a minimum of 23°C (74°F) and an average temperature of 27°C (81°F), peaking at 32°C (89°F). In contrast, September offers cooler nights with a minimum temperature of 18°C (65°F) and a slightly lower average of 25°C (77°F), with a maximum of 30°C (86°F). While August remains relatively dry with only 5 mm (0.2 in) of precipitation over the entire month, September sees a slight uptick in rainfall, accumulating 25 mm (1.0 in) over two days. Interestingly, the humidity remains relatively stable, with August at 63% and September at 65%. For more details on the weather during this time, check out Ydra weather in August.
In September, the weather tends to be warmer, with average temperatures around 25°C (77°F) and maximums reaching up to 30°C (86°F). The month experiences a moderate amount of precipitation, totaling 25 mm (1.0 in) over just 2 days, and humidity levels are relatively comfortable at 65%. In contrast, October brings cooler temperatures, with averages dropping to 21°C (71°F) and maximums at 27°C (81°F). This month sees a slight increase in rainfall, with 26 mm (1.0 in) spread over 4 days, and humidity levels rising to 72%. For more details on the weather in October, you can visit Ydra weather in October.
September typically boasts warmer temperatures with an average of 25°C (77°F) and maximums reaching up to 30°C (86°F), making it a pleasant month for outdoor activities. In contrast, November brings cooler weather, with average temperatures dropping to 18°C (65°F) and maximums around 23°C (74°F). Additionally, November experiences greater precipitation, with 47 mm (1.9 in) falling over 8 days, compared to September's 25 mm (1.0 in) over just 2 days. Humidity levels also increase from 65% in September to 75% in November, contributing to a more moist atmosphere. For detailed information, you can check Ydra weather in November.
In September, the weather is notably warmer, with average temperatures ranging from a minimum of 18°C (65°F) to a maximum of 30°C (86°F), accompanied by relatively low precipitation of 25 mm (1.0 in) over just 2 days. The humidity sits at a moderate 65%, creating a comfortable, summery atmosphere. In contrast, December brings much cooler conditions, with average temperatures dropping to a minimum of 8°C (47°F) and a maximum of 21°C (69°F). This month also sees increased precipitation at 61 mm (2.4 in) over 10 days, along with higher humidity levels at 76%. For more detailed weather insights, check out Ydra weather in December.
As summer transitions to autumn, September on Ydra showcases a delightful blend of warmth and mildness, setting it apart from the more intense heat of the preceding months. With comfortable average temperatures around 25°C and only a hint of rainfall—just 25 mm across a couple of days—this month invites visitors to bask in pleasant breezes and lower humidity levels, typically around 65%. Unlike the sweltering highs of July and August, September offers a refreshing respite that enhances the island's tranquil beauty, making it an ideal time for exploration and relaxation. For more on what to expect, check out Ydra Climate.