Last updated: March 24, 2025
April in Siena, Italy heralds the arrival of spring, bringing a delightful mix of weather conditions. With maximum temperatures reaching up to 26°C (79°F) and a pleasant average of 12°C (55°F), the month offers a refreshing outdoor experience. However, visitors should be prepared for cooler evenings, as temperatures can dip to a minimum of -3°C (27°F). April also sees about 81 mm (3.2 in) of rain over 10 days, contributing to the region's lush landscape. The humidity level typically hovers around 70%, creating a vibrant atmosphere that is both charming and invigorating for those exploring this historic city.
In April, Siena experiences a noticeable transition towards warmer weather, with temperatures reflecting the arrival of spring. The month begins with minimums around -3°C (27°F), gradually climbing to an average of 12°C (55°F) and peaking at a delightful 26°C (79°F). This upward trend marks an exciting shift from the chilly temperatures of the previous months, particularly March, which saw lows plunge to -11°C (12°F). The warmer climate invites locals and visitors alike to enjoy outdoor activities, as the historic streets and stunning landscapes of Siena come alive under the gentle spring sun. With each passing day, the increasing warmth makes April an ideal time for exploration and celebration in this enchanting Italian city.
In April, Siena experiences a notable increase in precipitation, with 81 mm (3.2 in) of rain falling over 10 days. This marks a shift from the drier early months of the year; January through March averaged only 58 mm, while April's total highlights the transition to a wetter spring season. The rainfall serves as a precursor to May, which sees even more precipitation, suggesting that April acts as a bridge into the lush and vibrant landscapes that characterize late spring in Tuscany. With consistently rising rain totals, the city’s flora flourishes, making it a picturesque time for visitors to experience the enchanting beauty of Siena.
In April, Siena experiences a slight uptick in humidity, settling at 70%, which is a transition from the drier conditions of March at 68%. This month serves as a bridge, reflecting the gradual shift from cool spring temperatures toward the warmer months ahead. Overall, the April humidity suggests a refreshing climate, as it remains relatively stable compared to May’s predicted 69%. As the year progresses, we see a trend of decreasing humidity from the peak of January's 84% down to a comfortable average in the summer months, culminating in July and August where humidity levels dip to their lowest, 57% and 55% respectively. This mild atmosphere in April not only highlights the beauty of spring in Siena but also sets the stage for the warm, inviting summer that follows.
As spring unfolds in Siena, Italy, April brings a noticeable increase in UV exposure, with the UV Index rising to 7, placing it in the high exposure category. Consequently, the recommended burn time shortens to just 25 minutes, emphasizing the need for sun protection as the days grow longer and sunnier. This trend continues into May and June, where UV levels peak at 8 and 10 respectively, reflecting the region's transition from moderate spring sunshine to the intense summer rays. The overall pattern indicates a steady ascent in UV intensity as the year progresses, reminding residents and visitors alike to stay vigilant about sun safety during these brighter months. For more detailed information on daily UV levels, visit Siena UV Index.
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As spring unfolds in Siena, Italy, April shines brightly with an impressive 340 hours of sunlight, marking a delightful increase from the 311 hours recorded in March. This rise in sunny days heralds the transition from the cooler months, where January’s mere 185 hours contrasts sharply against the growing brilliance of April and sets the stage for May, which promises an even warmer welcome at 383 hours. The upward trend in sunlight hours continues into the summer, peaking in July with 432 hours, providing the perfect backdrop for exploring Siena's historic streets and vibrant plazas. The gradual tapering off in sunlight as autumn approaches brings a gentle reminder of the cyclical beauty of this enchanting region, making every hour of sunshine a cherished moment to savor.
April in Siena, Italy, presents a moderate chance of sunny weather, with about 45% likelihood of enjoying the sun. This month follows a trend of increasing sunshine that starts in the earlier months, where January sees just 31% sunshine, shooting up to 62% in March. Although April's sunny days dip slightly compared to March, it remains a pleasant time as the region transitions into spring. The sunshine gradually builds as the year progresses, peaking in the summer months, making it a delightful period for visitors who appreciate mild weather and blooming landscapes. Overall, April serves as a bridge, blending the tail end of potential rainy days with the promise of brighter skies ahead.
As spring unfolds in Siena, Italy, April marks a delightful turn in daylight duration, boasting over 13 hours of sunshine. This is a notable increase from March, which enjoyed just 11 hours, signaling the arrival of longer, brighter days. The trend continues to rise into May, where daylight peaks at 14 hours, before gradually descending into the summer months. This transition not only enhances the vibrancy of the city’s landscape but also invites outdoor activities and cultural festivities. Consequently, April serves as a perfect bridge between the shorter days of winter and the lengthy, sun-drenched days of summer, creating an atmosphere rich with life and energy.
As spring arrives in Siena, the April winds gently whisper through the historic streets at an average speed of 2.6 m/s (6 mph), mirroring the awakening of the city's vibrant atmosphere. This slight uptick in wind speed compared to the preceding months of January to March, which averaged around 2.4 m/s, adds a refreshing zest to the air, invigorating both locals and visitors alike. Interestingly, the winds remain consistent with those in May, hinting at a delightful continuation of pleasant breezes as the season progresses. Through winding piazzas and sun-drenched days, April's winds set the stage for the charm and beauty of Siena, inviting everyone to step outside and embrace the enchanting springtime vibes.
The weather in Siena changes throughout the year, offering a unique experience in each season. Below is a month-by-month comparison of April'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.
April generally offers milder and warmer weather compared to January, with temperatures ranging from a minimum of -3°C (27°F) to a maximum of 26°C (79°F) and an average temperature of 12°C (55°F). In contrast, January experiences colder conditions, with temperatures ranging from -5°C (23°F) to a maximum of 15°C (59°F) and an average of only 5°C (41°F). Additionally, April sees more precipitation at 81 mm (3.2 in) over about 10 days, compared to January's 44 mm (1.7 in) over 7 days. The humidity is also slightly lower in April at 70%, while January has a higher humidity level of 84%. For more detailed information on January weather, you can check Siena weather in January.
April generally offers milder temperatures compared to February, with an average of 12°C (55°F) and maximums reaching up to 26°C (79°F), while February's temperatures peak at a cooler 20°C (68°F). Both months experience some precipitation, but April sees slightly more rainfall at 81 mm (3.2 in) over 10 days compared to February's 68 mm (2.7 in) across 8 days. Additionally, humidity levels are noticeably higher in February at 76%, compared to 70% in April, making February feel a bit more damp. For a detailed look at February's weather, you can check out Siena weather in February.
In comparing the weather between March and April, April generally presents milder and more varied temperatures. While March experiences lower minimum temperatures, dropping to -11°C (12°F), April's minimum is slightly warmer at -3°C (27°F), contributing to a higher average temperature of 12°C (55°F) compared to March's 9°C (49°F). Moreover, April boasts a maximum temperature of 26°C (79°F), which exceeds March's maximum of 23°C (73°F). Precipitation also increases in April, with 81 mm (3.2 in) over 10 days, compared to 61 mm (2.4 in) over 8 days in March. The humidity levels are quite similar, with April at 70% and March at 68%. For more detailed information, you can visit Siena weather in March.
April and May present distinct shifts in weather patterns. In April, temperatures can range from a chilly minimum of -3°C (27°F) to a comfortable maximum of 26°C (79°F), with an average of 12°C (55°F). The month experiences moderate precipitation, totaling 81 mm (3.2 in) over 10 days, accompanied by a humidity level of 70%.
In contrast, May brings warmer conditions, with temperatures starting at a minimum of 3°C (37°F) and reaching up to 31°C (89°F), while the average temperature rises to 16°C (62°F). This month also sees a slight increase in precipitation to 91 mm (3.6 in) over 13 days, though humidity remains relatively stable at 69%.
Overall, May tends to be warmer and slightly wetter than April. For more detailed weather information, check out Siena weather in May.
April and June present quite distinct weather patterns. In April, temperatures range from a chilly minimum of -3°C (27°F) to a pleasant average of 12°C (55°F), peaking at 26°C (79°F). The month sees significant precipitation, averaging 81 mm (3.2 in) over about 10 days, along with a humidity level of 70%. In contrast, June boasts a much warmer climate, with temperatures starting at a minimum of 9°C (49°F) and averaging a comfortable 22°C (71°F), reaching highs of 36°C (96°F). Additionally, June experiences less rain, totaling 38 mm (1.5 in) across just 6 days, accompanied by lower humidity at 62%. For more details, visit Siena weather in June.
April and July present stark contrasts in weather conditions. April features a broader temperature range, with minimums dipping as low as -3°C (27°F) and average temperatures around 12°C (55°F), rising to a maximum of 26°C (79°F). It also experiences higher precipitation, with 81 mm (3.2 inches) falling over 10 days and maintaining a humidity level of 70%. In contrast, July boasts a much warmer climate, where temperatures rarely drop below 13°C (56°F) and can reach a maximum of 36°C (97°F), with an average temperature of 24°C (76°F). Rainfall is significantly reduced to 38 mm (1.5 inches) over just 6 days, coupled with a lower humidity of 57%. For a more detailed look at July's warm and generally dry weather, you can refer to the following link: Siena weather in July.
April and August present contrasting weather conditions. In April, temperatures range from a chilly minimum of -3°C (27°F) to a comfortable maximum of 26°C (79°F), with an average of 12°C (55°F). The month sees a significant amount of precipitation, totaling 81 mm (3.2 in) over about 10 days, and humidity levels hover around 70%. In contrast, August experiences much warmer temperatures, with a minimum of 12°C (53°F) and a maximum soaring to 37°C (99°F), averaging 25°C (77°F). Rainfall is minimal in August, accumulating only 34 mm (1.3 in) over just 5 days, and humidity drops to a more comfortable 55%. For further details on August weather, visit Siena weather in August.
April and September present quite different weather experiences. In April, temperatures range from a chilly minimum of -3°C (27°F) to a comfortable maximum of 26°C (79°F), with an average of 12°C (55°F). However, this month sees relatively high precipitation at 81 mm (3.2 in) over about 10 days, coupled with a humidity level of 70%. In contrast, September enjoys milder conditions, with temperatures starting at a minimum of 7°C (45°F), peaking at 32°C (90°F), and averaging around 20°C (69°F). The precipitation is slightly higher at 84 mm (3.3 in), occurring over just 9 days, and humidity is slightly lower at 66%. For more information on September weather, check out Siena weather in September.
April and October weather both present a delightful mix of temperatures and conditions, but they differ in several key aspects. In April, temperatures can dip as low as -3°C (27°F) but average around 12°C (55°F) and reach a maximum of 26°C (79°F), while October's temperatures are milder, ranging from a minimum of 5°C (40°F) to an average of 15°C (59°F) and a peak of 27°C (81°F). Additionally, April experiences more precipitation, with 81 mm (3.2 in) over about 10 days, compared to October’s 91 mm (3.6 in) spread across just 8 days. Humidity levels are also higher in October at 79%, while April sits at a more moderate 70%. For a detailed look at October weather, refer to Siena weather in October.
April and November present quite different weather experiences despite having the same minimum temperature of -3°C (27°F). In April, average temperatures reach a pleasant 12°C (55°F) with maximums soaring to 26°C (79°F), while November's average drops slightly to 11°C (51°F) and a maximum of 19°C (66°F). Additionally, precipitation varies significantly between the months. April sees 81 mm (3.2 in) over about 10 days, whereas November receives a much heftier 148 mm (5.8 in) across 15 days, resulting in a more humid atmosphere at 84%. For those interested in specific conditions during this month, detailed information can be found at Siena weather in November.
In comparing the weather between April and December, April typically offers milder temperatures, with average highs reaching up to 26°C (79°F), while December's average peak is only 16°C (61°F). Both months experience chilly minimum temperatures, with April's low at -3°C (27°F) slightly warmer than December's -4°C (25°F). Precipitation is relatively frequent in both months, with April receiving 81 mm (3.2 in) over 10 days and December totaling 98 mm (3.8 in) across 11 days. Additionally, December tends to be more humid, with a humidity level of 83% compared to April's 70%. For more specific information on December weather, you can visit Siena weather in December.
As April unfolds in Siena, the weather presents a delightful blend of brisk mornings and pleasantly mild afternoons, distinguishing it from the chillier months of winter. With maximum temperatures peaking at a comfortable 26°C (79°F), visitors can revel in the burgeoning warmth, while the average 12°C (55°F) signals a gentle transition towards spring. However, be prepared for the occasional rain, as April witnesses about 81 mm (3.2 in) of precipitation over 10 days, creating a refreshing atmosphere. The increased humidity of 70% adds a subtle richness to the air, making this month an ideal time to experience Siena's blossoming landscapes. For a deeper dive into what to expect throughout the year, check out Siena Climate.