Last updated: March 24, 2025
In September, Ostuni, Italy experiences a delightful Mediterranean climate characterized by a warm average temperature of 23°C (74°F). Daily highs can reach a maximum of 32°C (90°F), while nighttime lows provide a comfortable escape, dropping to 16°C (60°F). The month sees approximately 34 mm (1.3 in) of precipitation spread over 7 days, making it a transitional period where sunny days are common, but brief showers may occur. With a humidity level of 66%, visitors can expect a pleasantly warm atmosphere perfect for exploring the stunning white-washed streets and enjoying the local culture.
In September, Ostuni, Italy, offers a delightful transition from the sweltering summer heat to a more temperate climate. With minimum temperatures around 16°C (60°F) and averaging 23°C (74°F), the month is pleasantly warm, making it ideal for exploring the charming streets and stunning landscapes. Daytime highs reaching 32°C (90°F) still invite sunbathing and outdoor activities, but the cooler evenings provide a refreshing contrast, encouraging leisurely strolls through the town. As autumn approaches, the warmth of September feels inviting yet comfortable, ushering in a season that harmoniously blends lingering summer vibes with the freshness of fall.
September in Ostuni, Italy, marks a transition into a wetter season, with precipitation amounting to 34 mm (1.3 in) over 7 rainy days. This increase follows the drier summer months, where July and August see minimal rainfall, registering only 13 mm (0.5 in) and 20 mm (0.8 in) respectively. As the autumn approaches, rainfall begins to pick up again, foreshadowing the wetter months ahead, particularly October, which averages 63 mm (2.5 in). This trend highlights September as a pivotal month, bridging the dry heat of summer and the refreshing, more saturated autumn weather in this beautiful coastal town.
In Ostuni, Italy, September marks a transition as the summer heat begins to wane, bringing an increase in humidity to 66%. This slight rise follows the driest month of August, where humidity dipped to 56%, creating a notably comfortable backdrop for daily activities. The cooling temperatures of September create a refreshing contrast, yet the humidity is still lower than the winter months, where levels soar back to 82% in January and December. As the year progresses, the trend shows a gradual increase in humidity from summer's end to the winter months, inviting a unique charm to Ostuni’s late summer evenings.
As summer transitions to autumn in Ostuni, Italy, September marks a shift in the UV Index, reflecting changes in sun intensity and exposure risks. With a UV Index of 7, indicating a high exposure category, locals and visitors should be vigilant, especially with a burn time of just 25 minutes. This month follows a series of very high UV Index readings during the peak summer months of June through August, where burn times were notably shorter at only 15 minutes. As the days gradually shorten, October will see a slight decrease to a UV Index of 6, but caution is still advised with another 25-minute burn time. For more insights on protecting yourself from harmful UV exposure, check out the detailed Ostuni UV Index.
UV Risk Categories
As summer gives way to autumn, September in Ostuni, Italy, offers a delightful blend of warm weather and vibrant sunshine, totaling 343 hours of radiant daylight. This month, while quieter than the peak summer months of July and June, still captures the essence of a Mediterranean escape, providing ample opportunities for outdoor adventures and leisurely strolls through the historic streets. The gradual decline in sunlight from the soaring 427 hours in July hints at the seasonal transition, yet September maintains a rich tapestry of sun-soaked days, making it an ideal time to explore Ostuni's stunning landscapes and cultural gems. With temperatures still warm but crowds receding, visitors can enjoy the charm of this ancient town in a more relaxed atmosphere, savoring the last golden rays of summer before the cooler months set in.
As summer transitions into autumn, Ostuni, Italy continues to bask in a generous 59% chance of sunny weather in September. This marks a slight decline from the peak of 84% in July and 81% in August, yet it's still favorable for those seeking pleasant days outdoors. September maintains a sunny disposition, especially when compared to earlier months like November and December, where chances of sun drop significantly. With the warmth of summer lingering and the crowds beginning to thin, September offers an ideal blend of beautiful weather and a more tranquil atmosphere for exploring this charming gem of Apulia.
As summer fades into autumn, September in Ostuni, Italy, witnesses a gentle decline in daylight duration, basking in 12 hours of sunlight. Following the sun-soaked peaks of June and July, which enjoy a luxurious 15 and 14 hours respectively, September serves as a transitional month, offering a warm blend of lingering sunshine and the first hints of autumn’s embrace. This progression from the lengthy days of summer to the shorter daylight hours of October highlights the region's cyclical rhythm, with October further dipping to 11 hours, reminding residents and visitors alike that the beauty of the changing seasons is as captivating as the charming streets of Ostuni itself.
In September in Ostuni, Italy, a gentle breeze graces the ancient white-washed town, with average wind speeds around 3.4 m/s (8 mph). This marks a notable decrease from the summer months, where the winds tend to linger around 3.6 m/s. As the summer heat transitions into the mild embrace of autumn, September’s winds create a serene atmosphere, inviting leisurely strolls through the picturesque streets. Looking back at the annual trend, wind speeds remain relatively low during this time of year, contributing to the charming stillness that envelops Ostuni before the autumn chill begins to settle in. The refreshing gusts serve as a subtle reminder of the changing seasons, harmonizing perfectly with the vibrant hues of the region's landscapes.
The weather in Ostuni 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 Ostuni and find detailed weather information for every month.
In September, the weather in Ostuni is warm and inviting, with temperatures ranging from a minimum of 16°C (60°F) to a maximum of 32°C (90°F), and an average of 23°C (74°F). The month sees about 34 mm (1.3 in) of precipitation over 7 days, and humidity levels hover around 66%. In contrast, January brings a stark shift, with temperatures dipping to a minimum of -1°C (31°F) and only reaching up to 16°C (62°F), resulting in a much cooler average of 9°C (49°F). This month experiences more precipitation, totaling 62 mm (2.4 in) across 9 days, accompanied by higher humidity at 82%. For a more detailed look at what to expect during this period, visit Ostuni weather in January.
In September, the weather is generally warm and pleasant, with temperatures ranging from a minimum of 16°C (60°F) to a maximum of 32°C (90°F) and an average of 23°C (74°F). The month experiences a moderate amount of rainfall, totaling 34 mm (1.3 in) over about 7 days, while humidity levels are around 66%.
In contrast, February brings cooler temperatures, where the minimum dips to 2°C (35°F), with a maximum of only 19°C (66°F) and an average of 11°C (51°F). This month sees a higher precipitation amount of 56 mm (2.2 in) spread across approximately 9 days, and the humidity rises to 74%.
For more detailed insights into February weather, you can check the information here: Ostuni weather in February.
September and March exhibit strikingly different weather patterns. In September, temperatures range from a minimum of 16°C (60°F) to a maximum of 32°C (90°F), with an average temperature of 23°C (74°F), offering a warm and generally pleasant climate. Precipitation during this month is relatively low at 34 mm (1.3 in), occurring over 7 days, and the humidity averages around 66%.
In contrast, March is significantly cooler, with minimum temperatures plummeting to 1°C (34°F) and maximums reaching just 19°C (66°F), leading to an average temperature of 12°C (53°F). This month also experiences higher precipitation at 53 mm (2.1 in) across 9 days, and the humidity levels increase slightly to 70%.
For more detailed insights, you can check out Ostuni weather in March.
When comparing the weather between September and April, it's evident that September tends to be warmer and drier. In September, temperatures range from a minimum of 16°C (60°F) to a maximum of 32°C (90°F), with an average of 23°C (74°F) and only 34 mm (1.3 in) of precipitation over about 7 days. In contrast, April sees cooler temperatures, with a minimum of 6°C (42°F) and a maximum of 24°C (76°F), averaging 14°C (58°F). Additionally, April tends to be wetter, receiving 44 mm (1.7 in) of precipitation over the same number of days, and experiences slightly higher humidity at 71%. For more detailed insights, you can visit Ostuni weather in April.
September typically showcases warmer temperatures compared to May, with averages around 23°C (74°F) and a max of 32°C (90°F), whereas May sees cooler temperatures, averaging 18°C (66°F) with a maximum of 28°C (83°F). While September receives less precipitation at 34 mm (1.3 in) over 7 days, May experiences a slightly wetter month with 48 mm (1.9 in) across 6 days. Humidity levels are slightly higher in May at 71%, compared to 66% in September, creating a different feel to the two months. To learn more about the weather specifics in May, you can visit Ostuni weather in May.
In comparing the weather of September and June, both months share an average temperature of 23°C (74°F), creating a comfortable climate for outdoor activities. However, September features a slightly wider temperature range, with minimums of 16°C (60°F) and maximums reaching 32°C (90°F), compared to June's cooler minimum of 13°C (56°F) and maximum of 34°C (93°F). Additionally, September experiences a bit more precipitation at 34 mm (1.3 in) over 7 days, while June sees less with just 26 mm (1.0 in) over 5 days. Humidity levels remain fairly consistent, hovering around 66% in September and 65% in June, contributing to a moderately humid experience in both months. For more details on June weather in Ostuni, you can check Ostuni weather in June.
In comparing the weather of September to that of July, we notice some distinct differences. September experiences milder temperatures with a minimum of 16°C (60°F), an average of 23°C (74°F), and a maximum reaching 32°C (90°F). In contrast, July is warmer, with minimum temperatures of 19°C (66°F), an average of 26°C (79°F), and highs that can soar to 35°C (95°F). Additionally, September sees more precipitation at 34 mm (1.3 in) over 7 days, compared to July's 13 mm (0.5 in) over just 3 days. Humidity levels are also slightly higher in September at 66%, while July maintains a lower humidity of 61%. For more detailed insights, you can check Ostuni weather in July.
In comparing the weather between August and September, we see a notable shift in temperatures and humidity levels. August tends to be hotter, with average temperatures around 27°C (81°F) and maximums reaching up to 36°C (97°F). In contrast, September experiences a more moderate climate, with an average temperature of 23°C (74°F) and maximums peaking at 32°C (90°F). Additionally, September records higher precipitation, totaling 34 mm (1.3 in) over 7 days, compared to August’s 20 mm (0.8 in) over just 4 days. Humidity also rises in September to 66%, up from 56% in August. For further details on August weather, you can visit this link: Ostuni weather in August.
In September, the weather tends to be warmer, with temperatures ranging from a minimum of 16°C (60°F) to a maximum of 32°C (90°F) and an average of 23°C (74°F). Precipitation is relatively low at 34 mm (1.3 inches) over about 7 days, with a humidity level of 66%. In contrast, October brings cooler temperatures, with a minimum of 12°C (54°F), an average of 18°C (66°F), and a maximum of 27°C (82°F). Rainfall increases in October to 63 mm (2.5 inches) over 8 days, accompanied by higher humidity at 74%. For a more detailed look at what to expect, check out Ostuni weather in October.
In September, the weather is generally warm and pleasant, with temperatures ranging from a minimum of 16°C (60°F) to a maximum of 32°C (90°F) and an average of 23°C (74°F). This month sees relatively low precipitation, with only 34 mm (1.3 in) spread over about 7 days, and the humidity sits at 66%. In contrast, November brings a significant drop in temperatures, with a minimum of 7°C (44°F), an average of 15°C (60°F), and a maximum of 22°C (73°F). Rainfall increases notably during this month, totaling 110 mm (4.3 in) over 12 days, and humidity rises to 80%. For a detailed look at the climate specifics, visit Ostuni weather in November.
September offers a warm climate with temperatures ranging from a comfortable 16°C (60°F) at night to a balmy maximum of 32°C (90°F) during the day, accompanied by relatively low precipitation of 34 mm (1.3 in) over about seven days. In contrast, December brings a significant drop in temperatures, with a chilly minimum of 5°C (41°F) and an average of only 11°C (53°F), while the maximum reaches a mild 18°C (64°F). The month sees increased rainfall, accumulating 61 mm (2.4 in) over approximately ten days, along with higher humidity levels at 82%. For a more detailed look at December conditions, you can visit Ostuni weather in December.
As summer transitions into autumn, September in Ostuni brings a delightful shift in weather that offers a refreshing escape from the peak heat of July and August. With temperature swings that average a comfortable 23°C (74°F), this month strikes a pleasant balance between warmth and mildness. Although there are still sunny days, the slight increase in precipitation—summing up to about 34 mm over approximately 7 days—adds an inviting diversity to the landscape, enhancing the region's natural beauty. Humidity levels hover around 66%, providing a soft, Mediterranean feel that makes exploring Ostuni’s charming streets a wonderful experience. For more insights into the weather patterns and trends, visit Ostuni Climate.