Last updated: March 24, 2025
July in Siena, Italy is characterized by a vibrant summer atmosphere, boasting a maximum temperature of 36°C (97°F) and a pleasant average of 24°C (76°F). While the minimum temperature can drop to 13°C (56°F), the warmth is tempered by a moderate humidity level of 57%. Visitors can expect some welcome relief from the heat as July brings about 38 mm (1.5 in) of precipitation over approximately 6 days, adding a refreshing touch to the sun-soaked days. Ideal for exploring this historic city, July offers a delightful blend of warm sunshine and occasional summer showers.
In July, Siena experiences its warmest days of the year, with temperatures reaching a sizzling maximum of 36°C (97°F), while the average hovers around a pleasant 24°C (76°F). This month marks a significant leap from the cooler temperatures of prior months, showcasing a sharp increase from 36°C in June. As nighttime descends, the minimum temperature remains mild at 13°C (56°F), providing a comfortable atmosphere for evening strolls through the city's enchanting streets. July's warm climate not only invites sun-seekers but also brings a vibrant energy to Siena, where outdoor festivals and local events flourish under the long, sunlit days.
In July, Siena experiences a moderate precipitation level of 38 mm (1.5 in), which is consistent with June's rainfall but marks a slight increase compared to August, where averages dip to 34 mm (1.3 in). Surprisingly, July's rainy days tally remains low at just 6, mirroring the preceding month, suggesting that most rainfall occurs in brief, intense showers. This dry spell during summer contrasts starkly with the wetter months of late fall, as November and October see significantly higher precipitation amounts, making July a relatively dry but still lush month in this picturesque Italian city.
In July, Siena experiences a notable dip in humidity, reaching 57%, which marks the lowest level for the year. This decline continues the summer trend, as humidity typically decreases from the 84% peak in January to the more comfortable levels of July and August, at 55%. As the hot summer months progress, residents and visitors alike can enjoy the warm weather without the heavy moisture typical of the winter months. Following this drier period, humidity begins to climb again in early autumn, suggesting a seasonal shift that brings a refreshing contrast to the summer heat.
In July, the UV Index in Siena, Italy, reaches a peak of 10, classifying it under the very high exposure category. This alarming index indicates that sunburn can occur in just 15 minutes of unprotected skin exposure. Following a trend established in June, when the UV Index also hit 10, July continues to underscore the need for sun safety measures during the summer months. Earlier in the year, the index gradually increased from a low of 2 in January to a significant 8 in May, highlighting the escalating intensity of solar radiation as the seasons progress. As temperatures rise, so too does the urgency for locals and visitors alike to protect themselves from harmful UV rays. For more detailed information, visit Siena UV Index.
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July in Siena, Italy, shines brightly with 432 hours of sunshine, marking it as the sunniest month in the year. This peak illuminates a clear trend of increasing daylight as the seasons progress—starting from 185 hours in January and steadily climbing to July. The transition from April's gentle 340 hours to June's vibrant 417 hours demonstrates the escalating embrace of summer. As August rolls in, sunshine remains abundant at 402 hours, though a slight dip signals the gradual shift toward autumn. This consistent rise and subsequent plateau of daylight encapsulate Siena's warm embrace of summer, inviting both locals and travelers to bask in its golden glow.
In Siena, Italy, July boasts a 64% chance of sunny weather, making it one of the brightest months of the year. This trend of increasing sunshine is evident as the summer unfolds, with July following June's 58% likelihood and edging closer to August's peak of 66%. The progression from the cooler months shows a significant uptick in sunshine; after a modest 31% in January, the likelihood steadily rises through the spring and early summer. As visitors flock to this stunning city during July, they can expect ample sunshine that enhances the warmth of Tuscany’s enchanting landscapes and vibrant culture.
In July, Siena enjoys a generous 14 hours of daylight, making it one of the sunniest months of the year. This peak continues the trend established in June, where daylight extends to 15 hours, allowing residents and visitors to fully embrace the enchanting Tuscan landscape. As summer progresses into August, daylight slightly diminishes to 13 hours, marking a gradual transition towards shorter days. Over the course of the year, daylight duration reflects the changing seasons, with the hours peaking in summer before slowly decreasing back to winter's 9 hours in January and December. This rhythm not only influences daily life in Siena but also enhances the region’s charm, inviting exploration and enjoyment during the longer, sun-filled days.
In July, Siena experiences an average wind speed of 2.3 m/s (5 mph), which is a slight increase from the gentle breezes of June, where the winds dropped to 1.8 m/s (4 mph). This modest uptick signals a comfortable summer’s day, as the winds remain overall mild compared to other months. The trend throughout the year showcases the calm atmosphere typical of summer in this enchanting Italian city, with April and May bringing similarly light winds of 2.6 m/s (6 mph). As autumn approaches, one can expect a gradual return to stronger breezes, with October and November each offering a refreshing 2.7 m/s (6 mph). Overall, July’s winds add a delightful touch to the warm summer air, enhancing Siena's charm as visitors explore its historic streets.
The weather in Siena changes throughout the year, offering a unique experience in each season. Below is a month-by-month comparison of July's weather with other months, highlighting differences in temperature, precipitation, and other key factors. Click on each section to discover seasonal trends in Siena and find detailed weather information for every month.
In July, Siena experiences a warm climate with average temperatures around 24°C (76°F), peaking at a high of 36°C (97°F). The month typically sees only 38 mm (1.5 inches) of precipitation over about 6 days, with humidity levels averaging 57%, creating a generally comfortable summer atmosphere. In stark contrast, January brings much colder conditions, where temperatures drop as low as -5°C (23°F) and only reach an average of 5°C (41°F). This winter month experiences slightly more precipitation at 44 mm (1.7 inches) over 7 days, along with higher humidity at 84%, contributing to a much chillier and damp environment. For more details, check Siena weather in January.
July and February present strikingly different weather patterns. In July, temperatures range from a mild 13°C (56°F) at night to a sweltering maximum of 36°C (97°F), with an average of 24°C (76°F). This summer month experiences relatively low precipitation at 38 mm (1.5 in) over 6 days, and humidity levels sit at 57%. In contrast, February sees much cooler conditions, with temperatures dipping as low as -5°C (23°F) during the night and peaking at 20°C (68°F), averaging a brisk 7°C (46°F). Additionally, February tends to be wetter, bringing 68 mm (2.7 in) of rain across 8 days, accompanied by higher humidity at 76%. For more detailed insights, check out Siena weather in February.
When comparing the weather in July and March, it's clear that the two months present distinct climates. July typically experiences much warmer temperatures, ranging from a minimum of 13°C (56°F) to a maximum of 36°C (97°F), with an average of 24°C (76°F). In contrast, March has cooler conditions, with temperatures ranging from -11°C (12°F) to a maximum of 23°C (73°F) and an average of just 9°C (49°F). Additionally, July sees less precipitation at 38 mm (1.5 in) over about 6 days, while March receives 61 mm (2.4 in) of rainfall across approximately 8 days. The humidity is also notably higher in March at 68%, compared to July's 57%. For more detailed information on March conditions, you can visit Siena weather in March.
April weather is markedly cooler than July, with temperatures ranging from a minimum of -3°C (27°F) to an average of 12°C (55°F) and a maximum of 26°C (79°F). In contrast, July boasts much warmer temperatures, with minimums of 13°C (56°F) and maximums reaching 36°C (97°F), averaging around 24°C (76°F). Precipitation levels also differ significantly: April sees more rainfall at 81 mm (3.2 in) over about 10 days, while July experiences less, with 38 mm (1.5 in) over just 6 days. Additionally, April's higher humidity of 70% compared to July's 57% contributes to the cooler feel during the spring month. For more details, you can check out Siena weather in April.
In comparing the weather between May and July, July presents a significantly warmer climate, with average temperatures ranging from a minimum of 13°C (56°F) to a maximum of 36°C (97°F). This contrasts with May, which sees much cooler temperatures, averaging between 3°C (37°F) and 31°C (89°F). Additionally, July has lower precipitation levels at 38 mm (1.5 in) across just 6 days, compared to May’s 91 mm (3.6 in) over 13 days, indicating a wetter month. Humidity is also slightly lower in July at 57%, while May experiences a higher humidity level of 69%. For more specific insights into May weather, check out Siena weather in May.
In comparing the weather patterns of June and July, July generally presents warmer conditions, with an average temperature of 24°C (76°F) compared to June's 22°C (71°F). Both months experience the same maximum temperature of 36°C (96°F), but July starts with a higher minimum temperature of 13°C (56°F) versus June's 9°C (49°F). Precipitation levels remain consistent at 38 mm (1.5 in) for both months, occurring over a span of 6 days. However, July's humidity is slightly lower at 57%, while June holds a higher humidity level of 62%. For more details on June's weather specifically, you can check out Siena weather in June.
In comparing the weather between July and August, both months display warm temperatures, but August tends to be slightly hotter on average. July sees minimum temperatures around 13°C (56°F) and averages of 24°C (76°F), reaching a maximum of 36°C (97°F), while August has a minimum of 12°C (53°F), an average of 25°C (77°F), and a maximum of 37°C (99°F). Precipitation is also comparable, with July recording 38 mm (1.5 in) over 6 days, whereas August has 34 mm (1.3 in) over 5 days, indicating a slightly drier pattern. Additionally, humidity levels are slightly lower in August at 55%, compared to 57% in July. For a more detailed look at what to expect, you can check out Siena weather in August.
In July, temperatures are typically warmer, with a minimum of 13°C (56°F), an average of 24°C (76°F), and a maximum reaching up to 36°C (97°F). The month sees relatively low precipitation, with an average of 38 mm (1.5 in) falling over 6 days and a humidity level around 57%. In contrast, September brings cooler temperatures, with a minimum of 7°C (45°F) and an average of 20°C (69°F), while the maximum reaches 32°C (90°F). This month experiences higher precipitation, totaling 84 mm (3.3 in) over 9 days, and increased humidity at 66%. For more details on September's weather, check out Siena weather in September.
In July, the weather is warm and vibrant with average temperatures around 24°C (76°F) and a maximum reaching up to 36°C (97°F). However, the month sees relatively low precipitation at 38 mm (1.5 in) over approximately 6 days, accompanied by moderate humidity of 57%. In contrast, October brings a notable shift in climate, with average temperatures dropping to 15°C (59°F) and a maximum of 27°C (81°F). It experiences higher precipitation at 91 mm (3.6 in) over about 8 days, and increased humidity of 79%. For those interested in exploring this transitional season, more information can be found at Siena weather in October.
July and November present stark contrasts in weather patterns. In July, temperatures range from a mild 13°C (56°F) at night to a hot 36°C (97°F) during the day, with an average of 24°C (76°F). The month sees relatively low precipitation at 38 mm (1.5 in) over just six days, along with moderate humidity at 57%. In contrast, November brings much cooler temperatures, with minimums dropping to -3°C (27°F) and averages settling around 11°C (51°F), peaking at a comfortable 19°C (66°F). This month experiences significantly higher rainfall, totaling 148 mm (5.8 in) across 15 days, and higher humidity levels at 84%. For more detailed information, check out Siena weather in November.
In July, the weather is warm and inviting, with temperatures ranging from a comfortable 13°C (56°F) at night to a hot 36°C (97°F) during the day, accompanied by moderate humidity of 57%. Precipitation is relatively low, with 38 mm (1.5 in) falling over just six days, making it a great month for outdoor activities. In stark contrast, December brings much cooler temperatures, with a minimum of -4°C (25°F) and a maximum of only 16°C (61°F), along with higher humidity at 83%. Rainfall increases significantly to 98 mm (3.8 in) over eleven days, creating a more wintry atmosphere. For those interested in the specifics of December weather, additional details can be found here: Siena weather in December.
July in Siena offers a stark contrast to the milder months of spring and early summer, bringing sultry days marked by higher temperatures and increased sunshine. With an average high of 24°C, the warmth becomes more pronounced, often peaking around a sweltering 36°C, making it the hottest month of the year. While the chance of rain is still present, July typically sees only a few occasional showers, totaling approximately 38 mm over about six days. The moderate humidity of 57% adds to the summer heat, creating a lasting impression of vibrant warmth. For insights into Siena's weather throughout the year, explore Siena Climate.