Last updated: March 24, 2025
September in San Francesco, Italy offers a delightful climate, with maximum temperatures reaching 29°C (84°F) and an average of 18°C (65°F), providing a pleasant environment for both locals and visitors. This month experiences a minimum temperature of 5°C (42°F), highlighting the potential for cooler evenings. Rainfall totals 83 mm (3.3 in) over approximately 10 days, ensuring the landscape remains lush and vibrant. With humidity levels around 66%, the air feels comfortable, making September an ideal time for exploring the charm of this picturesque location.
In September, San Francesco enjoys a delightful transition from the summer heat, with temperatures gradually cooling down yet remaining pleasantly warm. The month opens with a minimum temperature of around 5°C (42°F) and peaks at a comfortable 29°C (84°F), making it ideal for outdoor adventures and exploring the picturesque surroundings. The average temperature sits at a mild 18°C (65°F), creating a perfect balance between warm days and cooler nights. This gradual decline from the sweltering temperatures of August not only highlights the region’s seasonal shift but also invites visitors to relish in the rich hues of autumn while enjoying the still-warm days that September generously offers.
In September, San Francesco experiences a notable increase in precipitation, with 83 mm (3.3 in) falling over 10 days. This marks a shift from the drier summer months of July and August, which saw only 46 mm (1.8 in) and 43 mm (1.7 in), respectively. As the summer heat wanes, the arrival of autumn brings a more consistent pattern of rainfall that continues into October, which averages 94 mm (3.7 in). This transition not only revitalizes the lush landscapes but also prepares the region for the wetter months ahead, where November peaks with 143 mm (5.6 in) of rain and 13 precipitation days. Thus, September serves as a bridge, gently ushering in the rainy season and enhancing the vibrant scenery of San Francesco.
In September, San Francisco experiences a notable shift in humidity, with levels averaging around 66%. This represents a slight increase from the drier months of July and August, which boast their lowest humidity levels at 57% and 55%, respectively. As summer transitions to autumn, the city's humidity begins to rise, paving the way for the wetter winters ahead. Compared to the heights of January and November, where humidity peaks at 84%, September serves as a refreshing mid-point, signaling the gradual return to the more humid conditions that define the city's climate for much of the year. Overall, the trend highlights a clear seasonal pattern, where dwindling summer aridity gives way to more moisture-laden air, setting the stage for the impending wet season.
In September, San Francesco experiences a UV Index of 7, placing it in the high exposure category with a burn time of just 25 minutes. This marks a notable drop from the peak summer months of July and August, where the index soared to a 10 and 9 respectively, both signaling very high risk levels. As autumn approaches, the UV Index begins to ease, moving from the intense sun of summer to a more moderate yet still impactful level. Visitors and locals alike should remain vigilant about sun protection, especially during midday hours when UV rays can still be potent. To learn more about the UV Index throughout the year, visit San Francesco UV Index.
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As summer begins to wane in San Francesco, September welcomes a delightful 338 hours of sunshine, marking a gentle transition from the peak brightness of July and August. The sun-drenched days of early autumn maintain a warmth that lingers from previous months, though they begin to yield to the approaching cooler October, which sees a drop to 302 hours. This seasonal shift complements the lush surroundings, encouraging both locals and visitors to indulge in outdoor activities under the golden rays. Notably, the trend in sunshine hours reveals a steady increase from winter's 182 hours in January, steadily climbing towards the summer months, only to gradually taper off as the year progresses. With its enchanting light and thriving landscapes, September stands out as a serene yet vibrant month in the ever-sunny tapestry of San Francesco.
As September unfolds in San Francesco, Italy, residents and visitors can anticipate a 53% chance of sunny weather, making it a delightful time to explore the scenic beauty of the region. Following the warm and increasingly sunlit months of summer, September maintains a solid likelihood of sunshine, though it also hints at the approaching fall. Interestingly, this month's sun probability dips slightly compared to the peak summer months of July and August, which boast sun chances over 60%. Nevertheless, September stands out as a wonderful transitional phase, where the lingering warmth of summer can still be enjoyed amidst the backdrop of autumn's arrival. Thus, while the days may grow shorter, the pleasant weather still beckons, inviting outdoor adventures and picturesque moments.
As summer transitions into autumn, September in San Francesco, Italy, offers a delightful balance of daylight, with around 12 hours of sun. This month marks a gentle decline from the peak 15 hours of daylight seen in June and July, yet still boasts more light than the gloomier winter months. The steady decrease in daylight hours from the vibrant days of summer to the cozier ambiance of early fall underscores a natural rhythm that enhances the charm of the season, inviting residents and visitors alike to revel in the rich colors and mellow warmth of autumn. As the days grow shorter, the promise of cozy evenings and cultural festivities begins to take center stage, making September a perfect time to soak in the enduring beauty of San Francesco.
As September unfolds in San Francesco, the gentle embrace of the wind begins to soften, with an average speed of 1.7 m/s (4 mph). This marks a subtle decline from the busier summer months, where breezes hovered around 2.0 m/s in both July and August. Interestingly, the autumn air starts to whisper promises of change, transitioning from the slightly stronger gusts of earlier months toward a more tranquil atmosphere. As the year progresses into October, expect a revitalization, with an increase to 2.4 m/s (5 mph), heralding the return of more spirited winds and a subtle shift in the seasonal rhythm. This dance of air speeds throughout the year beautifully reflects the calming yet dynamic essence of San Francesco’s climate.
The weather in San Francesco 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 San Francesco and find detailed weather information for every month.
September and January present stark contrasts in weather. In September, temperatures range from a mild 5°C (42°F) at night to a warm 29°C (84°F) during the day, with an average of 18°C (65°F). The month usually sees around 83 mm (3.3 in) of precipitation over approximately 10 days, and the humidity is moderate at 66%. In contrast, January experiences much colder conditions, with temperatures dipping to a minimum of -8°C (17°F) and averaging just 3°C (38°F), peaking at 13°C (57°F). This month is drier, with 61 mm (2.4 in) of precipitation spread across about 8 days, though the humidity is higher at 84%. For more details on January weather, you can check San Francesco weather in January.
September and February present contrasting weather patterns, reflecting the shifts between late summer and winter. In September, temperatures range from a mild 5°C (42°F) to a warm 29°C (84°F), with an average of 18°C (65°F). The month sees moderate precipitation of 83 mm (3.3 in) over about 10 days, accompanied by a relative humidity of 66%. In contrast, February experiences much colder conditions, with temperatures varying from a chilly -12°C (10°F) to a maximum of 19°C (66°F) and an average of just 6°C (43°F). Precipitation increases slightly, reaching 105 mm (4.1 in) over 11 days, while the humidity also rises to 76%. For a detailed overview of February weather, check out San Francesco weather in February.
In September, temperatures are generally milder, with a range from a chilly 5°C (42°F) to a warm 29°C (84°F) and an average of 18°C (65°F). The month experiences around 83 mm (3.3 in) of precipitation over approximately 10 days, accompanied by a humidity level of 66%. In contrast, March brings more variability, with minimum temperatures dropping to a frigid -15°C (5°F) and an average of only 7°C (45°F), peaking at 21°C (71°F). Notably, precipitation levels are slightly higher at 89 mm (3.5 in), spread over 11 days, and humidity is marginally higher at 68%. For more detailed insights, you can check San Francesco weather in March.
When comparing the weather in September and April, notable differences emerge. September offers warmer temperatures, with an average of 18°C (65°F) and highs reaching up to 29°C (84°F), while April's average temperature is cooler at 11°C (52°F), peaking at 24°C (75°F). Precipitation is slightly higher in April, totaling 96 mm (3.8 in) over 12 days compared to September's 83 mm (3.3 in) over 10 days. Additionally, humidity levels are relatively close, with September at 66% and April slightly higher at 70%. For a more detailed look at April's climate, you can visit San Francesco weather in April.
In comparing the weather in September and May, we see notable differences in temperature and precipitation. September typically has a warmer average temperature of 18°C (65°F), with maximums reaching up to 29°C (84°F), while May is cooler with an average of 15°C (59°F), also peaking at 29°C (84°F). In terms of precipitation, May experiences more rainfall, totaling 126 mm (5.0 in) over 17 days, compared to September's 83 mm (3.3 in) across 10 days. Additionally, humidity is slightly higher in May at 69%, compared to 66% in September. For more detailed information on May weather, visit San Francesco weather in May.
September and June present distinct weather patterns, each with its unique characteristics. In June, temperatures range from a minimum of 8°C (47°F) to a maximum of 34°C (94°F), with an average of 20°C (68°F), making it warmer overall. This month also sees less precipitation at 58 mm (2.3 in) over about 8 days. In contrast, September experiences cooler temperatures, with a minimum of 5°C (42°F), an average of 18°C (65°F), and a maximum of 29°C (84°F). Additionally, September has more rainfall, totaling 83 mm (3.3 in) over 10 days, along with slightly higher humidity at 66%. For a closer look at the June climate specifically, visit San Francesco weather in June.
When comparing the weather in September and July, a noticeable difference emerges in temperature and precipitation. September enjoys a broader range of temperatures, with minimums around 5°C (42°F) and maximums reaching up to 29°C (84°F), while July is generally warmer, featuring minimums of 11°C (51°F) and maximums soaring to 35°C (95°F). Additionally, July experiences less rainfall, accumulating 46 mm (1.8 in) over about 6 days, compared to September, which sees 83 mm (3.3 in) across approximately 10 days. Humidity levels are also higher in September at 66%, compared to July's 57%, making September feel a bit more humid and potentially more variable in weather conditions. For more details on July weather, you can visit San Francesco weather in July.
In comparing the weather of September to August, September experiences a notable decrease in temperature, with minimums dropping to 5°C (42°F) and average highs reaching 29°C (84°F) compared to August's minimum of 11°C (52°F) and average maximum of 34°C (94°F). Additionally, September brings increased precipitation, totaling 83 mm (3.3 in) over 10 days, while August has only 43 mm (1.7 in) over 7 days. Humidity levels also rise in September, averaging at 66%, compared to a more comfortable 55% in August. For a more detailed look at August's weather, you can visit San Francesco weather in August.
September and October present a distinct shift in weather conditions. In September, temperatures range from a minimum of 5°C (42°F) to a maximum of 29°C (84°F), with an average of 18°C (65°F). The month experiences around 83 mm (3.3 in) of precipitation over 10 days and maintains a humidity level of 66%. In contrast, October brings cooler temperatures, with a minimum of 3°C (38°F), an average of 13°C (56°F), and a maximum of 24°C (75°F). Precipitation slightly increases to 94 mm (3.7 in) over the same number of rainy days, accompanied by a rise in humidity to 79%. For a closer look at what to expect, you can check San Francesco weather in October.
In September, the weather is generally milder, with temperatures ranging from a minimum of 5°C (42°F) to a maximum of 29°C (84°F), averaging around 18°C (65°F). This month experiences some rainfall, with about 83 mm (3.3 in) spread over approximately 10 days and a humidity level of 66%. In contrast, November brings a significant drop in temperatures, with a minimum of -2°C (29°F) and a maximum of 18°C (64°F), averaging only 9°C (48°F). Precipitation increases to 143 mm (5.6 in) over 13 days, along with a higher humidity of 84%. For a more detailed look at November weather, you can check San Francesco weather in November.
September and December present significantly different weather patterns. In September, temperatures range from a cool minimum of 5°C (42°F) to a warm maximum of 29°C (84°F), with an average of 18°C (65°F). The month experiences moderate precipitation of 83 mm (3.3 in) over about 10 days, and the humidity is relatively comfortable at 66%. In contrast, December ushers in much colder temperatures, with a minimum of -5°C (23°F) and a maximum of 14°C (58°F), resulting in an average of just 5°C (41°F). Precipitation increases to 138 mm (5.4 in) over approximately 14 days, and humidity rises to 83%, creating a damp and chilly atmosphere. For more information on December weather specifics, visit San Francesco weather in December.
As summer gives way to autumn, September in San Francesco becomes a delightful transition, marked by comfortable temperatures that average around a refreshing 18°C (65°F). The warmest days can still reach about 29°C (84°F), creating that perfect window for enjoying outdoor activities. However, don't forget your umbrella, as this month usually sees about 10 days of rain, accumulating around 83 mm (3.3 in) in total. With humidity levels at 66%, there's a subtle crispness in the air that contrasts with the sweltering heat of the preceding summer months. For a more detailed look at what to expect throughout the year, explore the full details in the San Francesco Climate section.