Last updated: March 24, 2025
In Bolsena, Italy, September welcomes a vibrant blend of summer warmth and autumn breezes. Daytime temperatures can peak at a maximum of 31°C (88°F), while the average temperature settles comfortably around 20°C (68°F). As the month unfolds, the air cools down to a refreshing minimum of 7°C (46°F) during the night. Visitors can expect a moderate precipitation amount of 99 mm (3.9 in) over 9 days, contributing to a humidity level of 66%. This transitional month is ideal for exploring the enchanting landscapes and rich history of Bolsena, where the changing season enhances its picturesque charm.
As summer gives way to autumn, Bolsena, Italy, experiences a notable shift in weather during September. The temperatures begin to cool, with minimums around 7°C (46°F) offering a refreshing change from the sweltering heat of August. The average temperature peeks at 20°C (68°F), providing a pleasant balance for outdoor activities. As the month progresses, highs can still reach a comfortable 31°C (88°F), allowing visitors to enjoy warm days while the crispness of fall starts to settle in. This transitional month not only marks the end of Italy's vibrant summer but also sets the stage for the charming autumnal beauty of the region, making September a perfect time to explore the picturesque landscapes surrounding Bolsena.
September marks a significant shift in precipitation for Bolsena, Italy, where rainfall totals peak at 99 mm (3.9 in), the highest of any month in the region. This increase, occurring over 9 days, sets the stage for the approaching autumn, as the days grow shorter and cooler. Notably, the month serves as a transition from the drier summer months—like July and August, which saw only 45 mm (1.8 in) and 43 mm (1.7 in) respectively—to a wetter fall, signaling a return of lush landscapes. As September progresses, it’s evident that nature is preparing for the rainy season ahead, with the high precipitation levels a precursor to the wetter months of October and November. The consistent rainfall not only invigorates the scenery but also enhances the character of this enchanting lakeside town.
As summer wanes into autumn, September in Bolsena, Italy, presents a refreshing shift in humidity, settling at a moderate 66%. Following the height of the season, which boasts the lowest humidity levels in July and August at 57% and 55% respectively, September's conditions begin to reflect the transition towards the wetter months ahead. The humidity gradually climbs from the summer lows, mirroring the increase observed in October, which surges to 79%. This pattern highlights the gradual return of moisture in the air as the region braces for the cooler, wetter fall and winter months, emphasized by the notable rise that comes in the following months of November and December, both of which hover around 84%.
As September rolls into Bolsena, Italy, the UV Index settles at a moderate level of 7, indicating a high exposure category that warrants some caution. This marks a slight decline from the intense very high indices experienced during the summer months of June, July, and August, where UV levels peaked at 10. However, with a burn time of just 25 minutes, it's essential for residents and visitors alike to remain vigilant. The transition into autumn brings a refreshing change, but the sun can still be strong, especially compared to the earlier months of the year. As October approaches, the UV Index will continue to decrease, promoting safer outdoor activities. For more detailed insights, check the full UV data at Bolsena UV Index.
UV Risk Categories
As summer gracefully transitions into autumn, September brings a delightful balance of sunshine to Bolsena, Italy, with around 336 hours of glorious daylight. This month stands out as a serene period following the peak brightness of July and August, which basked in long, sun-filled days averaging 433 and 401 hours respectively. September’s hours may dwindle as daylight shortens, yet it maintains a warm glow, often featuring crisp air that invites leisurely outdoor activities. The gradual decrease in sunlight continues into October, with 309 hours, hinting at seasonal shifts while still allowing ample time for exploring Bolsena's stunning landscapes. This delightful blend of warmth and mildness makes September a truly enchanting time to experience the beauty of this idyllic Italian town.
In September, Bolsena, Italy enjoys a promising 53% chance of sunny weather, marking a transition from the peak summer months of July and August, which boast sunny probabilities of 64% and 63%, respectively. As autumn approaches, this percentage indicates a decline but still offers favorable conditions for outdoor activities and sightseeing. Interestingly, the likelihood of sunny days in September sits comfortably above the mid-year average, suggesting that early fall is a delightful time to experience the beauty of Bolsena, with pleasant weather that enhances its scenic charm. As the month unfolds, visitors can expect a mix of warm days and cooler evenings, making it an inviting season for exploration.
As summer gracefully transitions into autumn, September in Bolsena, Italy, offers a delightful balance of daylight with 12 hours of sunlight. Following the sun-drenched days of June and July, which bask in an impressive 15 hours and 14 hours of daylight respectively, September marks a gentle decline in daylight as it leads into the shorter days of October. This month experiences a reduction in sunlight, reflecting nature's rhythms, yet still provides ample time for exploration and relaxation. The gradual decrease from the peak of summer invites locals and visitors alike to savor the lingering warmth of early fall, making September a captivating time to enjoy the scenic beauty of this enchanting lakeside town.
As summer transitions to autumn, September in Bolsena offers a gentle breeze, with average wind speeds dipping to 2.0 m/s (4 mph). This marks the lowest point of the year, reflecting a noticeable shift from the more brisk winds earlier in the season. Throughout the warmer months, particularly June, July, and August, wind speeds hover around a moderate level, with July peaking at 2.6 m/s (6 mph). However, as September unfolds, the softer gusts provide a tranquil ambiance, making it an ideal time for leisurely strolls along the lake’s edge. This calming wind sets the stage for a picturesque autumn, inviting visitors to savor the serene beauty of Bolsena as it prepares for the cooler days ahead.
The weather in Bolsena 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 Bolsena and find detailed weather information for every month.
September and January present contrasting weather patterns typical of their respective seasons. In September, temperatures range from a mild 7°C (46°F) at night to a warm 31°C (88°F) during the day, resulting in an average of 20°C (68°F). With 99 mm (3.9 in) of precipitation over about 9 days, humidity hovers around 66%, contributing to a generally comfortable, albeit occasionally rainy, atmosphere.
In stark contrast, January experiences much cooler conditions, with temperatures dipping as low as -5°C (23°F) and peaking at only 15°C (60°F), averaging around 5°C (41°F). Precipitation is less frequent, totaling 57 mm (2.2 in) over about 7 days, but the humidity is higher at 84%, making the winter air feel damp and cold. For more detailed insights, you can check Bolsena weather in January.
September and February present contrasting weather patterns. In September, temperatures range from a minimum of 7°C (46°F) to a maximum of 31°C (88°F), with an average of 20°C (68°F). The month sees about 99 mm (3.9 in) of precipitation over 9 days, accompanied by a humidity level of 66%. Conversely, February experiences much colder conditions, with temperatures dipping as low as -7°C (19°F) at night and reaching a maximum of 18°C (65°F). The average temperature in February is a chilly 7°C (45°F), and it receives less precipitation at 73 mm (2.9 in) over 8 days, while humidity remains relatively high at 76%. To explore more details about February weather, check out Bolsena weather in February.
September and March present distinct contrasts in weather. September boasts warmer temperatures, with an average of 20°C (68°F) and highs reaching up to 31°C (88°F), making it a comfortable transition into autumn. In contrast, March experiences much cooler conditions, with an average of 9°C (48°F) and lows dropping to -10°C (14°F), as winter gives way to spring. Although September sees slightly more precipitation (99 mm or 3.9 in) over about 9 days, March is not far behind with 79 mm (3.1 in) of rain over 10 days, contributing to an overall dampness felt in both months. Humidity levels are similar, with September at 66% and March at 68%. For a closer look at March weather in the region, visit Bolsena weather in March.
September and April present contrasting weather patterns. In September, temperatures typically range from a minimum of 7°C (46°F) to a warm maximum of 31°C (88°F), with an average of 20°C (68°F). The month experiences about 99 mm (3.9 in) of precipitation over 9 days, with humidity levels at around 66%. In contrast, April starts off cooler, with minimum temperatures dipping to -2°C (29°F) and average daytime temperatures reaching 12°C (54°F), peaking at 26°C (78°F). This month also has slightly less rainfall, totaling 85 mm (3.4 in) over 10 days, with humidity slightly higher at 70%. For a closer look at the weather in April, you can refer to Bolsena weather in April.
When comparing the weather in September and May, we can see some notable differences. September experiences a wider range of temperatures, with a minimum of 7°C and an average of 20°C, while May has slightly cooler temperatures, ranging from a minimum of 4°C to an average of 16°C. Both months have the same maximum temperature of 31°C, but September tends to be more humid at 66% compared to May's 69%. Additionally, September has slightly less precipitation at 99 mm over 9 days, whereas May sees 96 mm of rainfall spread over 14 days, indicating a greater likelihood of rain during May. For more specific information on Bolsera's weather, you can check Bolsena weather in May.
When comparing the weather in September and June, we see notable differences in temperature and precipitation patterns. September experiences a wider temperature range, with minimums dipping to 7°C (46°F) and highs reaching up to 31°C (88°F), resulting in an average temperature of 20°C (68°F). In contrast, June is slightly warmer with minimums around 9°C (49°F) and maximums peaking at 35°C (95°F), giving it an average temperature of 21°C (71°F). Additionally, September tends to be wetter, recording 99 mm (3.9 in) of precipitation over 9 days, compared to June's 48 mm (1.9 in) over just 5 days. Humidity levels are generally higher in September at 66%, compared to June's 62%. For more detailed insights, check out Bolsena weather in June.
When comparing the weather in September and July, notable differences emerge. September experiences a broader temperature range, with lows of 7°C (46°F) and highs of up to 31°C (88°F), averaging around 20°C (68°F). This month also sees more precipitation, totaling 99 mm (3.9 in) over 9 days, along with a higher humidity level at 66%. In contrast, July is warmer overall, with a minimum temperature of 14°C (57°F) and a maximum of 35°C (95°F), averaging a comfortable 24°C (75°F). Rainfall is significantly less prevalent in July, with only 45 mm (1.8 in) over 6 days and lower humidity at 57%. For more details on July weather, visit Bolsena weather in July.
In comparing the weather of September to that of August, it's evident that September experiences a notable drop in temperature, with minimums of 7°C (46°F) compared to August's milder 14°C (57°F). The average temperature in September is around 20°C (68°F), significantly lower than August's 25°C (77°F), while September sees maximums of 31°C (88°F), which is still warm but cooler than August's peak of 38°C (100°F). Additionally, September is wetter, with 99 mm (3.9 in) of precipitation over 9 days, compared to August's 43 mm (1.7 in) over 8 days. Moreover, humidity levels are higher in September at 66% versus August's 55%. These differences highlight how September transitions into a cooler and more humid climate. For more detailed information, you can check the Bolsena weather in August.
In September, the weather features a wide range of temperatures, with minimums around 7°C (46°F) and maximums reaching up to 31°C (88°F), resulting in an average of 20°C (68°F). September also sees about 99 mm (3.9 in) of precipitation over 9 days and a humidity level of 66%. In contrast, October experiences cooler temperatures, with lows of 6°C (43°F) and highs of 25°C (78°F), leading to an average of 15°C (59°F). The month is slightly wetter, with 95 mm (3.8 in) of precipitation spread across 10 days, and humidity rises to 79%. For more detailed information, check out Bolsena weather in October.
September typically experiences warmer weather compared to November, with average temperatures reaching around 20°C (68°F) and maximums peaking at 31°C (88°F). In contrast, November's average temperature drops significantly to 11°C (52°F), with highs only reaching 19°C (66°F). Additionally, November is marked by increased precipitation, totaling 151 mm (5.9 in) across 16 days, compared to September's 99 mm (3.9 in) over 9 days. The humidity also rises in November, reaching 84%, compared to 66% in September. For more detailed information, you can check Bolsena weather in November.
In September, the weather is warm and pleasant with average temperatures around 20°C (68°F) and maximums reaching up to 31°C (88°F), offering a comfortable atmosphere for outdoor activities. With a total precipitation of 99 mm (3.9 in) spread over 9 rainy days, the humidity sits at 66%, creating a somewhat muggy environment but still enjoyable. In contrast, December brings much cooler temperatures, with averages dropping to 7°C (44°F) and maximums capping at 15°C (60°F). This month experiences heavier precipitation at 115 mm (4.5 in) across 12 days and a higher humidity level of 83%, reflecting a much wetter and chillier climate. For a more detailed look at December weather, you can check this Bolsena weather in December.
As summer transitions into autumn, September in Bolsena brings a delightful shift in weather characterized by warmer days and cooler nights. The average temperature sits comfortably at a pleasant 20°C (68°F), which is a welcome change from the peak summer heat. While the days can still rise to a maximum of 31°C (88°F), evenings often dip to refreshingly cooler temperatures, around 7°C (46°F). This month also sees an increase in precipitation, with 99 mm (3.9 in) of rain over 9 days, making it one of the wetter months. The 66% humidity adds a touch of moisture to the air, contributing to the lush landscapes that flourish in this season. For a comprehensive understanding of what to expect throughout the year, check out the detailed insights at Bolsena Climate.