Last updated: August 31, 2025
Experience the charming September weather in Serravalle, San Marino, where temperatures gracefully range from a maximum of 31°C (88°F) to a refreshing minimum of 10°C (50°F). The average temperature hovers around a comfortable 21°C (69°F), making it an ideal time for outdoor exploration. While the month sees 93 mm (3.7 in) of precipitation across 10 rainy days, the humidity remains at a pleasant 66%, adding to the allure of this picturesque locale. Embrace the vibrant colors of autumn as you revel in the seasonal charm that Serravalle has to offer!
As September arrives in Serravalle, San Marino, the lingering warmth of summer begins to transition into the crispness of autumn. With minimum temperatures averaging around 10°C (50°F) and maximums peaking at a pleasant 31°C (88°F), this month offers a comfortable average temperature of 21°C (69°F). September stands out as a bridge between the heat of August and the cooler days of October, making it an ideal time for outdoor activities. As the month progresses, the days start to shorten, hinting at the seasonal shift, while still retaining a palpable warmth that invites exploration of the picturesque landscapes. Overall, September presents a delightful balance of warmth and refreshing coolness, perfect for both locals and visitors alike.
September in Serravalle, San Marino, marks a significant uptick in precipitation, with 93 mm (3.7 in) falling over 10 days—making it one of the wetter months of the year. This increase contrasts with the relatively drier summer months of July and August, which recorded 55 mm (2.2 in) and 49 mm (1.9 in) respectively, over just 6 days each. The surge in rainfall heralds the transition into the autumn season, setting the stage for the upcoming months, which also show heightened precipitation—most notably November, which averages a similar amount of 95 mm (3.7 in). The trend of increasing rainfall in September suggests a shift in weather patterns, making it an essential month for replenishing the region's moisture reserves.
As the summer warmth begins to fade, September in Serravalle, San Marino, witnesses a noticeable uptick in humidity, reaching a comfortable 66%. This slight increase marks a transition from the drier months of July and August, which recorded the lowest levels at 57% and 55%, respectively. Observing the overall trend, humidity levels in Serravalle exhibit a gradual rise from the leaner summer, peaking again in the late fall and winter months, with October and November seeing notable jumps to 79% and 84%. This natural ebb and flow of humidity not only defines the climate's character throughout the year but also enhances the vibrant beauty of autumn as the landscape prepares for the chill of winter.
As September rolls into Serravalle, San Marino, residents and visitors can expect a high UV Index of 7, indicating a significant increase in sun exposure compared to the early months of the year. This comes after a summer of very high UV levels, peaking at 9 in both June and July, where protective measures were crucial with burn times as short as 15 minutes. While September's burn time reverts back to 25 minutes, it's essential to remain cautious, as the UV Index remains elevated. As the season transitions into fall, the UV Index will gradually decline, making October's moderate levels more manageable. For best practices on sun safety and to keep track of the UV Index trends, visit Serravalle UV Index.
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As summer gracefully gives way to autumn, September in Serravalle, San Marino continues to bask in a warm glow, with 339 hours of sunshine lighting up the landscape. This month, while a slight dip from the sun-drenched heights of July and June, maintains a brightness that outshines the earlier months of the year, especially in contrast to January and February. The steady climb in sunlight hours from the start of the year peaks in late summer, illustrating a vibrant transition into fall. With days still filled with ample sunshine, September offers a delightful blend of warmth and the promise of cooler days ahead, making it an ideal time to enjoy the picturesque surroundings before winter arrives.
In Serravalle, San Marino, September offers a pleasant transition into the fall, boasting a 55% chance of sunny weather. This month maintains a commendable level of sunshine following the warm, sun-drenched days of August, which sees the highest probability at 63%. The trends indicate that as summer draws to a close, the likelihood of clear skies remains notably strong compared to the winter months, where the chance dips considerably. With sunshine more common than not in September, visitors can enjoy outdoor activities and explore the stunning landscapes of this charming locale before the leaves begin to change.
As summer gives way to fall in Serravalle, San Marino, September marks a subtle transition in daylight duration. With 12 hours of daylight, the month reflects a gradual decline following the peak of 15 hours experienced in June and July. This decrease signals nature’s shift, as days shorten progressively from the longer, sun-drenched days of summer to the crisp, cooler months ahead. The dynamic landscape transitions beautifully, offering a blend of lingering warmth alongside the majestic hues of autumn. This rhythmic pattern of daylight serves as a reminder of the cyclical changes in the seasons, inviting residents and visitors alike to relish the enchanting charm of September days.
As summer fades into autumn, September's winds in Serravalle, San Marino, reveal a gentle shift, with an average speed of 2.1 m/s (5 mph)—the mildest of the year. This calm transition marks a noticeable dip from the breezier months of late spring and early summer, where average wind speeds peaked at 3.5 m/s (8 mph) in May. The increase in wind throughout the earlier months hints at a more vibrant atmosphere, which softens as the region approaches October, where winds pick up again to 3.3 m/s (7 mph). Overall, September serves as a tranquil interlude, setting the stage for the crisp fall breezes that follow, making it a perfect time to enjoy the serene beauty of Serravalle.
Weather in Serravalle varies notably across the year, with each month offering distinct climate conditions. This page compares September’s weather to other months in Serravalle, focusing on differences in temperature, rainfall, humidity, and UV levels.
September and January offer contrasting weather experiences. In September, temperatures range from a mild 10°C (50°F) at night to a warm 31°C (88°F) during the day, with an average of 21°C (69°F). This month also sees relatively higher precipitation at 93 mm (3.7 in) over about 10 days, making the air feel less humid at 66%. In stark contrast, January's temperatures drop significantly, with a minimum of -3°C (27°F) and a maximum of 15°C (59°F), resulting in a chilly average of 6°C (43°F). This winter month has less precipitation at 41 mm (1.6 in) over approximately 8 days, but the humidity is higher at 84%, creating a damp and cold atmosphere. For more details, you can check Serravalle weather in January.
September and February present strikingly different weather patterns. In September, temperatures range from a comfortable 10°C (50°F) to a warm 31°C (88°F), with an average of 21°C (69°F), creating an inviting atmosphere for outdoor activities. In contrast, February brings much cooler conditions, with minimum temperatures dipping to -5°C (23°F) and averaging only 8°C (46°F). Although both months experience a similar amount of rainfall—93 mm (3.7 in) in September compared to 81 mm (3.2 in) in February—February is slightly more humid at 76%. To explore February's weather in more detail, check out Serravalle weather in February.
Comparing the weather in September and March reveals distinct differences in temperature and overall climate conditions. September typically boasts a warmer range with minimum temperatures around 10°C (50°F) and maximums reaching up to 31°C (88°F), averaging at 21°C (69°F). This month also experiences more rainfall, totaling 93 mm (3.7 in) over about 10 days, accompanied by a humidity level of 66%. In contrast, March is much cooler, with minimum temperatures dipping to -7°C (19°F) and a maximum of 20°C (68°F), averaging only 9°C (49°F). March features less precipitation at 58 mm (2.3 in) spread over 7 days, along with a slightly higher humidity of 68%. For a closer look at the weather specifics in March, you can visit Serravalle weather in March.
In comparing the weather of September and April, it's clear that September tends to be warmer, featuring an average temperature of 21°C (69°F), with maximum highs reaching up to 31°C (88°F). In contrast, April is significantly cooler, with an average temperature of only 13°C (56°F) and maximum temperatures peaking at 24°C (76°F). Additionally, September experiences more precipitation at 93 mm (3.7 in) over approximately 10 days, while April sees 54 mm (2.1 in) across just 9 days. Interestingly, April has a slightly higher humidity level at 70%, compared to September's 66%. For more specific insights about April weather, you can check Serravalle weather in April.
When comparing the weather in September and May, September tends to be warmer, featuring temperatures that range from a minimum of 10°C (50°F) to a maximum of 31°C (88°F), with an average of 21°C (69°F). In contrast, May sees slightly cooler temperatures, with a minimum of 8°C (46°F) and a maximum of 28°C (82°F), averaging around 17°C (64°F). Both months experience considerable precipitation, with September receiving 93 mm (3.7 in) over 10 days and May recording 86 mm (3.4 in) over 12 days. Additionally, humidity levels are relatively similar, with September at 66% and May at 69%. For a closer look at the specific weather conditions in May, you can visit Serravalle weather in May.
September and June exhibit distinct weather patterns that reflect the transition from summer to early autumn. In September, temperatures range from a minimum of 10°C (50°F) to a maximum of 31°C (88°F), with an average of 21°C (69°F). This month also sees higher precipitation levels of 93 mm (3.7 in) over about 10 days, contributing to a humidity of 66%. In contrast, June features slightly warmer conditions, with a minimum of 12°C (54°F) and a maximum of 33°C (92°F), averaging 23°C (73°F). Rainfall in June is lighter, totaling only 39 mm (1.5 in) across approximately 5 days, and the humidity is a bit lower at 62%. For more details on June conditions, check out Serravalle weather in June.
In comparing the weather between September and July, September exhibits a more moderate temperature range with a minimum of 10°C (50°F) and an average of 21°C (69°F), while July tends to be warmer, featuring a minimum of 17°C (63°F) and an average of 25°C (77°F). July also experiences higher maximum temperatures, reaching up to 33°C (92°F), compared to September’s peak of 31°C (88°F). Additionally, July is drier with only 55 mm (2.2 in) of precipitation over 6 days, whereas September sees increased rainfall of 93 mm (3.7 in) across 10 days and higher humidity levels at 66% compared to July's 57%. For more details, visit Serravalle weather in July.
In comparing the weather of September to August, September presents a cooler climate with temperatures ranging from a minimum of 10°C to a maximum of 31°C, while August boasts warmer weather, with temperatures reaching a high of 36°C and an average of 25°C. Additionally, September experiences more precipitation, totaling 93 mm over 10 days, compared to August's 49 mm over just 6 days. Humidity levels are also higher in September at 66%, compared to August's 55%, making the latter feel slightly drier and hotter. For a detailed overview of August weather, you can visit Serravalle weather in August.
In September, the weather is warm with average temperatures reaching 21°C (69°F), highlighting a comfortable climate ideal for outdoor activities. The month sees a range of temperatures from a minimum of 10°C (50°F) to a maximum of 31°C (88°F), alongside a notable 93 mm (3.7 in) of precipitation spread over 10 days and a humidity level of 66%.
In contrast, October experiences cooler temperatures, with an average of 16°C (61°F) and highs of 27°C (81°F). The month is slightly drier, receiving 78 mm (3.1 in) of rain over just 8 days but features increased humidity at 79%. For more detailed insights, you can check out the Serravalle weather in October.
As September transitions into November, the weather experiences a marked shift. September boasts warmer temperatures, with a minimum of 10°C and an average of 21°C, peaking at 31°C, while November cools down significantly, starting at a minimum of 2°C and averaging only 12°C, reaching a maximum of 20°C. Both months receive similar amounts of precipitation, approximately 93 mm in September and 95 mm in November, but November sees a slightly increased number of rainy days at 12 compared to September's 10. Additionally, humidity rises from 66% in September to 84% in November, contributing to a noticeably chillier and more damp atmosphere. For those interested in more detailed information, check out Serravalle weather in November.
September and December present contrasting weather patterns. In September, temperatures range from a pleasant minimum of 10°C (50°F) to a warm maximum of 31°C (88°F), with an average of 21°C (69°F). The month experiences about 93 mm (3.7 in) of precipitation over 10 days, accompanied by moderate humidity at 66%. In stark contrast, December sees much cooler temperatures, with a minimum of -1°C (31°F) and an average of only 7°C (46°F), peaking at 17°C (63°F). Although precipitation decreases slightly to 78 mm (3.1 in), it lasts over 11 days, and humidity rises to a higher 83%. For more insights into December’s climate, you can check Serravalle weather in December.
As September unfolds in Serravalle, the weather transitions from the intense heat of summer to a more temperate climate, providing a refreshing change for residents and visitors alike. With maximum temperatures reaching around 31°C, the warmth still lingers, but the average cools down significantly, offering pleasant evenings. While rainfall begins to make its presence felt with about 10 days of precipitation, the overall humidity remains moderate at 66%, creating a comfortable atmosphere. This blend of fading summer warmth and emerging autumnal freshness makes September distinct from the sultry months preceding it, perfect for exploring the beauty of the region. For a deeper insight into how Serravalle's weather evolves throughout the year, visit Serravalle Climate.