Last updated: March 24, 2025
Experience the charm of Porto Ercole in September, where temperatures gracefully range from a balmy 14°C (57°F) at night to a peak of 29°C (84°F) during the day, averaging a comfortable 22°C (72°F). While visitors can enjoy predominantly sunny skies, a total of 63 mm (2.5 in) of rain falls over seven days, providing a refreshing contrast to the warm, 66% humidity. This delightful blend of weather sets the perfect backdrop for exploring scenic coastal views and indulging in local culinary delights.
In September, Porto Ercole transitions into the heart of autumn while still basking in the warmth of summer. With minimum temperatures rising to 14°C (57°F) and an average high of 29°C (84°F), visitors can enjoy pleasantly warm days ideal for exploring the picturesque coastline. This month sees a smooth drop in temperature from the scorching heights of July and August, making outdoor activities and leisurely walks along the promenade particularly inviting. As the days start to shorten and a gentle breeze sweeps through the air, the average temperature stabilizes at 22°C (72°F), offering the perfect balance of warmth and comfort. September is an excellent time to experience the charm of Porto Ercole, where the fading summer sun provides a stunning backdrop for unforgettable memories.
In September, Porto Ercole experiences a notable resurgence in precipitation, with 63 mm (2.5 in) recorded across 7 days. This marks a significant increase compared to the drier summer months, where rainfall dwindled to as little as 14 mm in August. The transition from summer to autumn brings a refreshing shift, as the rates of precipitation begin to rise alongside the slightly cooler temperatures. Interestingly, September's rainfall sets the stage for the wetter months ahead, hinting at a dramatic increase in October with 103 mm (4.1 in), illustrating a clear trend of escalating precipitation as fall progresses. This month serves as a reminder of nature's cyclical rhythm, where the quiet summer gives way to the robust rains of autumn.
In September, Porto Ercole experiences a slight increase in humidity, reaching 66%, which is a modest resurgence following the drier summer months of July and August, when humidity levels dipped to their lowest at 57% and 55%, respectively. This resurgence signals the transition into autumn, as humidity begins to rise again, peaking at 79% in October. The data reveals a general trend of decreasing humidity through the summer, followed by a return to higher levels as the year progresses towards the winter months, with January and November consistently exhibiting the highest humidity, around 84%. This rhythm of humidity reflects Porto Ercole's Mediterranean climate, making September a comfortable yet refreshing time to visit.
September in Porto Ercole, Italy, marks a transition as summer begins to fade, bringing with it a UV Index of 7, categorized as high. This level indicates a notable decrease from the peak summer months of June and July when the Index soared to 10 and 9, respectively. In September, the recommended burn time extends to 25 minutes, allowing for a more relaxed outdoor experience compared to the intense 15 minutes earlier in the summer. As the UV Index drops, it paves the way for more enjoyable sun-soaked days, perfect for soaking in the natural beauty of this charming coastal town. For more detailed insights on UV levels throughout the year, visit Porto Ercole UV Index.
UV Risk Categories
As September rolls in, Porto Ercole basks in a delightful 340 hours of sunshine, offering a perfect transition from the vibrant summer days to the gentle embrace of autumn. While the sun-soaked peak of July shines brightest with 433 hours, September still holds onto the warmth, embodying the tail end of summer's glory. This month marks a noticeable dip from August, where the sun dazzled for 402 hours, yet it maintains a significantly brighter outcome than the cooler months yet to come. The gradual decline in sunlight from summer to autumn serves as a reminder of nature's rhythm, making September an inviting time to enjoy the scenic beauty and tranquil charm of this coastal gem.
In September, Porto Ercole enjoys a 60% chance of sunny weather, making it a delightful time to soak up the Mediterranean sun. As summer comes to a close, the likelihood of clear skies starts to shift slightly from the peak months of July and August, which boast 70% and 74% respectively. This gradual decline hints at the transition to autumn, yet September still offers a plentiful dose of sunshine compared to the cooler months ahead. It’s an ideal time for visitors to relish the beauty of the coastline before the weather turns, combining warm days with lesser crowds, ensuring a perfect getaway in this picturesque Italian gem.
As summer gracefully transitions into autumn, September in Porto Ercole, Italy brings a gentle decline in daylight, offering approximately 12 hours of sun-filled skies. Following the peak brightness of June, which boasts a generous 15 hours of daylight, the days gradually shorten, a trend that continues into the crisp days of October. This seasonal shift highlights a comforting balance between lingering warmth and the anticipation of cooler months ahead. As daylight wanes, the enchanting evenings beckon, making September a perfect time to savor sunsets over the Tyrrhenian Sea while embracing the beauty of nature's transformation.
September in Porto Ercole, Italy brings a gentle shift in the winds, with an average speed of 3.5 m/s (8 mph). Crucially, this marks a subtle increase from the calmer summer months, reflecting a gradual return to the breezier conditions typical of autumn. While June sees the lightest winds at just 2.9 m/s (6 mph), the arrival of September signals a transition towards the crisp fall air, setting the stage for more robust winds as the season progresses. This trend continues into October, which experiences a notable uptick to 5.0 m/s (11 mph), reinforcing the idea that as summer wanes, the winds of Porto Ercole gain strength, inviting residents and visitors alike to embrace the refreshing change in atmosphere.
The weather in Porto Ercole 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 Porto Ercole and find detailed weather information for every month.
In September, temperatures in Porto Ercole range from a mild 14°C (57°F) to a warm 29°C (84°F), with an average of 22°C (72°F) and a moderate level of humidity at 66%. Precipitation is relatively light, totaling around 63 mm (2.5 in) across about 7 days. In contrast, January presents much cooler temperatures, with lows dropping to 0°C (32°F) and a high of only 17°C (63°F), averaging 10°C (50°F). The precipitation remains similar at 64 mm (2.5 in) over the same number of rainy days, but the humidity increases significantly to 84%. For more detailed insights, you can check the weather specifics at Porto Ercole weather in January.
In September, the weather typically features milder temperatures, with average highs around 22°C (72°F) and maximums reaching up to 29°C (84°F), making it a pleasant time for outdoor activities. Conversely, February temperatures drop significantly, averaging around 11°C (52°F), with maximums only reaching about 17°C (64°F) and even dipping to a chilling minimum of -2°C (29°F). Despite both months experiencing similar levels of precipitation—around 63 mm (2.5 in) in September compared to 66 mm (2.6 in) in February—February tends to feel much more humid at 76%, compared to September's 66%. For a detailed look at February weather in this region, check out Porto Ercole weather in February.
In comparing the weather between September and March, September generally offers warmer temperatures, with averages around 22°C (72°F) and highs reaching up to 29°C (84°F). In contrast, March experiences cooler conditions, with an average temperature of 12°C (53°F) and a maximum of 20°C (67°F). Precipitation levels are similar, with September receiving 63 mm (2.5 in) over about 7 days and March slightly lower at 62 mm (2.4 in) over 8 days. Humidity is also comparable, with September at 66% and March slightly higher at 68%. For more details on March weather, you can visit Porto Ercole weather in March.
September and April present notable differences in weather patterns. In September, temperatures are generally warmer, with a minimum of 14°C (57°F) and an average of 22°C (72°F), peaking at a maximum of 29°C (84°F). In contrast, April features cooler conditions, starting at a minimum of 6°C (43°F) and averaging 14°C (57°F), reaching a high of 22°C (72°F). While both months experience similar precipitation levels, with September recording 63 mm (2.5 in) and April a slightly lower 56 mm (2.2 in), the humidity in April is slightly higher at 70%, compared to 66% in September. For more detailed information on April weather, visit Porto Ercole weather in April.
In comparing the weather of September and May, September generally boasts warmer temperatures, with average highs reaching 29°C (84°F) compared to May’s maximum of 27°C (81°F). The minimum temperatures in September are notably higher as well, starting at 14°C (57°F) versus May's cooler 9°C (49°F). Additionally, while September experiences 63 mm (2.5 in) of precipitation over approximately 7 days, May sees slightly less rain at 53 mm (2.1 in) across 10 days, although humidity levels are quite similar, with September at 66% and May at 69%. For a closer look at May weather specifics, you can check Porto Ercole weather in May.
In comparing the weather between September and June, both months offer mild temperatures, with average highs of 22°C (72°F). However, June typically sees slightly warmer maximum temperatures, reaching up to 31°C (88°F), while September peaks at 29°C (84°F). Precipitation levels also differ significantly; September is wetter with 63 mm (2.5 in) of rain over 7 days, compared to June’s drier conditions, which only experience 17 mm (0.7 in) over 3 days. Additionally, humidity is slightly higher in September at 66%, compared to June’s 62%. For more detailed insights into June's weather, you can visit Porto Ercole weather in June.
In comparing the weather of September and July, it's evident that July tends to be warmer overall, with average temperatures reaching 25°C (77°F) compared to September's 22°C (72°F). The maximum temperature in July is slightly higher at 30°C (86°F) than September's peak of 29°C (84°F). However, September experiences more precipitation, with 63 mm (2.5 in) over seven days, whereas July sees only 18 mm (0.7 in) across just two rainy days. Additionally, September's humidity is higher at 66%, compared to July's 57%. For more details on July's weather in this region, you can check Porto Ercole weather in July.
In comparing the weather between August and September, we see a noticeable shift in temperatures and precipitation. August features warmer conditions, with minimum temperatures around 19°C (66°F) and average highs reaching 31°C (88°F), complemented by relatively low precipitation of only 14 mm (0.5 in) over 3 days and decreased humidity at 55%. In contrast, September experiences cooler temperatures, with a minimum of 14°C (57°F) and average maximums of 29°C (84°F). It also sees an increase in rainfall, totaling 63 mm (2.5 in) across 7 days, while humidity rises to 66%. For more detailed insights into August weather, you can check out Porto Ercole weather in August.
In September, the weather tends to be warmer with average temperatures ranging from a minimum of 14°C (57°F) to a maximum of 29°C (84°F), and a moderate precipitation of 63 mm (2.5 in) occurring on about 7 days. Humidity levels are generally around 66%, making it feel quite pleasant. In contrast, October sees a noticeable drop in temperatures, with averages between 12°C (54°F) and 25°C (77°F). This month also brings increased rainfall, totaling 103 mm (4.1 in) over approximately 9 days, and higher humidity at 79%. For more details, you can refer to Porto Ercole weather in October.
In comparing September and November weather, September is characterized by milder temperatures, with an average of 22°C (72°F) and maximums reaching up to 29°C (84°F). It experiences relatively low precipitation at 63 mm (2.5 in) over 7 days, and has a humidity level of 66%. In contrast, November brings significantly cooler temperatures, averaging 15°C (59°F), with maximums around 21°C (70°F) and minimums dropping to 7°C (45°F). This month also sees a substantial increase in precipitation, totaling 180 mm (7.1 in) over 17 days, along with higher humidity levels of 84%. For more details on November weather specifics, you can check Porto Ercole weather in November.
In September, Porto Ercole experiences a mild and pleasant climate, with average temperatures ranging from a minimum of 14°C (57°F) to a maximum of 29°C (84°F). The month sees relatively moderate rainfall, totaling 63 mm (2.5 in) over about 7 days, and humidity levels average around 66%. In contrast, December brings cooler weather with average temperatures dropping to a minimum of 5°C (41°F) and a maximum of 17°C (63°F). Precipitation increases significantly to 117 mm (4.6 in) over 12 days, accompanied by higher humidity levels at 83%. The transition from the warm, inviting fall of September to the chillier and wetter conditions typical of December marks a notable shift in Porto Ercole’s seasonal weather landscape. For more details, check Porto Ercole weather in December.
As September unfolds in Porto Ercole, the weather offers a delightful transition from the summer heat to the mildness of autumn. With average temperatures comfortably settling around 22°C (72°F), the days remain warm, but the evenings grow refreshingly cooler, inviting visitors to enjoy leisurely strolls along the stunning coastline. Though the month experiences an average of 63 mm of precipitation over about 7 days, rainfall tends to be sporadic, allowing ample opportunities to bask in the sun. Relative humidity at 66% adds a touch of richness to the air, making it an ideal time for outdoor activities. For those considering a trip, September's climate is perfectly poised between the sweltering heat of summer and the crispness of fall, making it a splendid time to explore this charming locale. For more detailed information, check out Porto Ercole Climate.