May Weather in Castro, Italy

Last updated: March 24, 2025

May in Castro, Italy, brings a delightful blend of mild temperatures and refreshing spring showers. With a maximum temperature soaring to 28°C (83°F) and an average of 19°C (66°F), this month is ideal for outdoor activities and exploring the picturesque landscapes. Visitors can expect a minimum of 11°C (52°F), providing comfortable evenings. However, be prepared for some rainfall, as 34 mm (1.3 in) of precipitation is spread over approximately 5 days, contributing to the region's lush greenery. Humidity levels sit at a cozy 79%, creating an inviting atmosphere perfect for enjoying Castro's charming coastal views and vibrant culture.

May Temperature in Castro

As May unfolds in Castro, Italy, the temperatures begin to show a delightful upward trend, marking a significant transition into warmer months. With minimums hovering around 11°C (52°F), average temperatures climbing to a pleasant 19°C (66°F), and highs reaching 28°C (83°F), visitors can expect comfortably warm days perfect for exploring the charming coastal town. This month stands out as the catalyst for summer, where the mild climate invites outdoor activities and leisurely strolls along the picturesque streets. As spring gives way to the summer heat just around the corner, May showcases an inviting atmosphere that makes it an ideal time to experience all that Castro has to offer.

May Weather in Castro: Daily Temperature Highs, Lows, and Averages

The chart illustrates May temperature patterns in Castro, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends.
JanFebMarAprMayJunJulAugSepOctNovDec525455596674798175676255
Data source: Temperature data for Castro generated using information from the Copernicus Climate Change Service.
Choose your preferred temperature unit
The average of daily temperatures (24 hours) calculated across all days in the month.

May Precipitation in Castro

In May, Castro experiences a noticeable shift in precipitation, with only 34 mm (1.3 in) of rainfall over just 5 days. This drop follows a trend of diminishing rainfall since the wetter months of winter and early spring, where January and February brought substantial amounts, reaching 70 mm and 81 mm, respectively. As the landscape transitions into summer, May’s modest rainfall sets the stage for drier conditions ahead, aligning with the typical Mediterranean climate pattern. While spring blooms often benefit from the earlier rains, the reduced precipitation in May heralds a warming trend, preparing the region for the upcoming summer months characterized by even less rain, as seen in June and July.

May Precipitation Trends in Castro

The chart displays monthly precipitation patterns in Castro, with values for each month alongside May's data, which is highlighted for easy comparison. It shows the amount of precipitation, providing insights into how May's conditions compare to those of other months.
JanFebMarAprMayJunJulAugSepOctNovDec7081564734281917439618669
Data source: Precipitation data for May generated using information from the Copernicus Climate Change Service.
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May Humidity in Castro

In May, Castro, Italy experiences a noticeable rise in humidity, reaching 79%—one of the higher levels for the year. This increase follows April's already elevated humidity of 77%, as the region transitions into the lushness of spring. The trend shows that humidity levels generally peak in the late spring months before gradually declining into summer, with June dropping slightly to 77%. The consistent humidity, particularly in these warmer months, contributes to Castro’s vibrant plant life and lush landscapes, creating a picturesque setting that draws visitors in.

May Average Humidity in Castro

This chart illustrates the average monthly humidity levels in Castro, with May's data highlighted for easy comparison. It shows the fluctuation in humidity throughout the year, allowing you to see how May's humidity levels compare to other months.
JanFebMarAprMayJunJulAugSepOctNovDec77%71%72%77%79%77%74%70%70%70%75%75%
Data source: Humidity data for May generated using information from the Copernicus Climate Change Service.

May UV Index in Castro

In May, Castro, Italy experiences an impressive UV Index of 9, categorized as very high, indicating a significant increase in solar radiation as spring transitions into summer. This marks a notable jump from April, when the UV Index reached 8. With a burn time of just 15 minutes, sunbathers should be cautious and consider protective measures, such as sunscreen and shade, during peak hours. This rising trend in the UV Index continues into June, reinforcing the importance of sun safety as temperatures rise. Visitors and residents alike can stay informed about daily conditions by checking the detailed forecast at Castro UV Index.

Maximum UV Index Levels in Castro for May

The chart shows the monthly maximum UV Index (UVI) for Castro in May, representing the highest UV radiation level. The UVI measures the intensity of ultraviolet radiation from the sun, indicating the potential risk of sunburn and UV-related health issues.
JanFebMarAprMayJunJulAugSepOctNovDec3468910998642
Data source: Castro May UVI data generated using information from the Copernicus Climate Change Service.

UV Risk Categories

  •  Extreme (11+): Avoid the sun, stay in shade.
  •  Very High (8-10): Limit sun exposure.
  •  High (6-7): Use SPF 30+ and protective clothing.
  •  Moderate (3-5): Midday shade recommended.
  •  Low (0-2): No protection needed.

May Sunshine in Castro

As May arrives in Castro, Italy, the sun reigns supreme, boasting a remarkable 406 hours of sunshine that beautifully signals the onset of summer. This marks a significant uptick from the previous months, illustrating a clear upward trend in daylight that begins in January. Each month gradually adds more hours of light, with April's comforting warmth paving the way for May's vibrant days. Following the gentle embrace of Spring, locals and visitors alike can bask in the long, sunlit hours, hinting at the delightful summer ahead. With June just a touch brighter at 410 hours, it's evident that the sun's presence is only set to intensify, inviting outdoor adventures and leisurely strolls along the stunning coastline.

Monthly Sunshine Duration in Castro: May Highlighted

The May sunshine duration represents the total number of hours Castro experiences direct sunlight during the month of May, excluding cloudy or obstructed periods. This chart compares the sunshine duration of May with the other months of the year.
JanFebMarAprMayJunJulAugSepOctNovDec208h265h332h353h406h410h426h399h345h310h255h258h
Data source: Castro May Sunshine duration data generated using information from the Copernicus Climate Change Service.

Chance of Sun in Castro During May

As May arrives in Castro, Italy, residents and visitors can expect a reliable 60% chance of sunny weather, setting the stage for delightful outdoor activities. This slight dip from April's 51% indicates an upward trend toward sunnier days as summer approaches. The warmth continues to build into June, where the odds of enjoying the sun leap to 76%, and the peaks of late summer boast a striking 89% chance in July and 87% in August. As the year progresses, the likelihood of sunshine noticeably increases, transforming Castro into a radiant getaway.

Percentage of Sunny Days in May in Castro

The chart illustrates the percentage of sunny days in Castro throughout the year, with May highlighted. It highlights the variation in sunshine across each month and provides an overview of the typical frequency of sunny days, offering insights into how often Castro experiences clear skies throughout the year.
JanFebMarAprMayJunJulAugSepOctNovDec42%57%65%51%61%76%89%87%62%55%35%59%
Data source: Castro May chance of sun data, generated using information from the Copernicus Climate Change Service.

Daylight Hours in Castro in May

As spring unfolds in Castro, Italy, May heralds a delightful shift in daylight, offering 14 hours of sunshine—a peak that continues into June and July. The progression from 9 hours in January to May’s vibrant glow illustrates the gradual lengthening of days, energizing the landscape and inviting outdoor pursuits. Following the lush days of summer, daylight begins to gently wane, tapering down to 13 hours in August and 12 hours come September. This rhythm of daylight not only enhances the beauty of the region but also marks a transition from the vibrant vitality of summer to the softer, reflective tones of autumn, as daylight once again settles back to 9 hours by December.

Average Daylight Hours in Castro for May

The chart illustrates the variation in daylight duration in Castro throughout the year, with May highlighted. It shows the monthly changes in daylight hours, calculated by summing the hours between sunrise and sunset.
JanFebMarAprMayJunJulAugSepOctNovDec9h 40m10h 40m11h 57m13h 16m14h 23m14h 57m14h 39m13h 40m12h 24m11h 6m9h 57m9h 22m
Data source: Castro daylight hours, calculated by summing the hours between sunrise and sunset for each day.

May Winds in Castro

As May unfolds in Castro, Italy, the average wind speed gently dips to 4.5 m/s (10 mph), marking a noticeable decline from the brisker conditions of earlier months. This trend reflects a gradual transition into the summer season, where breezes become milder, creating a more serene atmosphere for residents and visitors alike. Compared to the lively winds of January and February, which range from 5.4 m/s (12 mph) to 6.6 m/s (15 mph), May's conditions invite a sense of calm. With the wind easing further in June, it becomes clear that Castro is readying itself for the warm, tranquil days ahead, while still celebrating the refreshing breezes that define its spring charm.

Average May Wind Speed in Castro

The chart displays monthly wind speed patterns in Castro, with values for each month shown alongside May's data, which is highlighted for easy comparison. It illustrates the average wind speed, offering insights into how May's wind conditions compare to the rest of the year.
JanFebMarAprMayJunJulAugSepOctNovDec6.65.45.25.14.5 m/s3.53.73.63.64.25.76.2
Data source: Castro May wind data, generated using information from the Copernicus Climate Change Service.

How May Weather in Castro Compares to Other Months

The weather in Castro changes throughout the year, offering a unique experience in each season. Below is a month-by-month comparison of May's weather with other months, highlighting differences in temperature, precipitation, and other key factors. Click on each section to discover seasonal trends in Castro and find detailed weather information for every month.

In May, temperatures in Castro range from a minimum of 11°C (52°F) to a maximum of 28°C (83°F), with an average of 19°C (66°F), creating a warm and pleasant atmosphere. The month experiences relatively low precipitation, measuring just 34 mm (1.3 in) over about 5 days, along with a moderate humidity level of 79%. In contrast, January offers a much cooler climate, with temperatures ranging from a chilly 0°C (33°F) to a milder 17°C (63°F), averaging 11°C (52°F). The winter month sees higher precipitation levels at 70 mm (2.8 in) over approximately 11 days, combined with slightly lower humidity at 76%. For a more detailed look at January's weather, check out Castro weather in January.

May experiences significantly warmer temperatures compared to February, with average highs reaching 19°C (66°F) and maximums soaring to 28°C (83°F), while February's averages remain much cooler at 12°C (54°F). Additionally, May sees less precipitation, totaling only 34 mm (1.3 in) across about 5 days, whereas February receives a greater amount of rain at 81 mm (3.2 in) over approximately 8 days. Despite a higher humidity level of 79% in May, February's humidity is still notable at 71%. For more detailed information on February weather, you can visit Castro weather in February.

In comparing the weather between March and May, it's evident that May experiences milder and warmer conditions. With average temperatures ranging from a minimum of 11°C (52°F) to a maximum of 28°C (83°F), May showcases a significant increase when compared to March, where temperatures range from 4°C (39°F) to 20°C (69°F). Additionally, May has lower precipitation levels of 34 mm (1.3 in) over just 5 days, in contrast to March's higher total of 56 mm (2.2 in) spread across 8 days. The humidity also shows a slight increase in May, averaging 79%, compared to March's 72%. For more detailed insights on March weather, you can visit Castro weather in March.

In comparison to April, May typically experiences warmer temperatures, with a minimum of 11°C (52°F) and an average high of 28°C (83°F), while April's temperatures range from a minimum of 7°C (45°F) to a maximum of 26°C (79°F). May also sees a decrease in precipitation, registering only 34 mm (1.3 in) over 5 days, compared to April's 47 mm (1.8 in) over 9 days. Additionally, the humidity is slightly higher in May at 79%, compared to April's 77%. For more detailed information on April weather, you can visit Castro weather in April.

In May, temperatures range from a minimum of 11°C (52°F) to a maximum of 28°C (83°F) with an average of 19°C (66°F). The month sees about 34 mm (1.3 in) of precipitation over approximately 5 days, accompanied by a humidity level of 79%. Conversely, June experiences warmer conditions, with minimum temperatures of 15°C (58°F) and maximum highs reaching 35°C (95°F), averaging 24°C (75°F). This month has slightly less precipitation at 28 mm (1.1 in) over just 4 days, and humidity decreases slightly to 77%. For more detailed information about the weather conditions in June, please visit Castro weather in June.

May offers a milder climate with temperatures ranging from a minimum of 11°C (52°F) to a maximum of 28°C (83°F) and an average of 19°C (66°F). The month experiences more precipitation, with about 34 mm (1.3 in) spread over approximately 5 days, contributing to a higher humidity level of 79%. Conversely, July brings warmer temperatures, with a minimum of 20°C (68°F), an average of 26°C (80°F), and a peak of 35°C (95°F). It is significantly drier, receiving only 19 mm (0.8 in) of rain over just one day, resulting in a slightly lower humidity of 74%. For more details on July weather, visit Castro weather in July.

May and August present distinct weather profiles, showcasing the transition from spring to summer. In May, temperatures range from a mild minimum of 11°C (52°F) to a pleasant average of 19°C (66°F), reaching a maximum of 28°C (83°F). The month experiences about 34 mm (1.3 in) of precipitation over 5 days, accompanied by high humidity levels at 79%. In contrast, August brings warmer conditions, with minimum temperatures starting at 20°C (69°F) and averaging 27°C (81°F), peaking at 34°C (94°F). Precipitation decreases significantly to just 17 mm (0.7 in) over only 3 days, and humidity eases to 70%. For more details on the weather in August, visit Castro weather in August.

In May, the weather is generally mild, with temperatures ranging from a minimum of 11°C (52°F) to a maximum of 28°C (83°F) and an average of 19°C (66°F). This month experiences moderate humidity at 79% and precipitation of about 34 mm (1.3 in) over 5 days. In contrast, September brings warmer conditions, with minimum temperatures of 17°C (62°F), an average of 24°C (76°F), and a maximum of 30°C (86°F). Although September is slightly drier with 42 mm (1.7 in) of rainfall over 6 days, the humidity drops to 70%. For more detailed information, you can check Castro weather in September.

May typically features milder temperatures with averages ranging from a minimum of 11°C (52°F) to a maximum of 28°C (83°F), while October sees slightly warmer conditions, with temperatures ranging from 14°C (57°F) to 27°C (81°F). However, while May enjoys relatively low precipitation of 34 mm (1.3 in) over about 5 days, October experiences a significant increase in rainfall, totaling 96 mm (3.8 in) across approximately 10 days. Additionally, May's humidity level is higher at 79%, compared to October's more comfortable 70%. For more details on the weather during this month, you can check Castro weather in October.

May typically offers a warmer and more pleasant climate compared to November. With average temperatures ranging from a minimum of 11°C (52°F) to a maximum of 28°C (83°F), May enjoys more sunshine and less precipitation, averaging only 34 mm (1.3 in) over about five days. In contrast, November sees cooler temperatures, with a minimum of 8°C (47°F) and a maximum of 23°C (73°F), along with significantly higher rainfall, averaging 186 mm (7.3 in) across 14 days. The humidity is slightly lower in November at 75%, compared to 79% in May. For those curious about the weather conditions during this time, more details can be found here: Castro weather in November.

In May, the weather boasts a milder climate with temperatures ranging from a minimum of 11°C (52°F) to a maximum of 28°C (83°F), averaging around 19°C (66°F). The month experiences relatively low precipitation of 34 mm (1.3 in) over about 5 days, accompanied by a humidity level of 79%.

In contrast, December brings cooler temperatures, with a minimum of 6°C (43°F) and a maximum of 19°C (66°F), averaging only 13°C (56°F). This month sees a significant increase in precipitation, totaling 69 mm (2.7 in) spread across approximately 10 days, while humidity slightly decreases to 75%.

For more detailed information, you can check out the weather specifics for December at Castro weather in December.

Compare Castro's Climate with Cities Worldwide

Conclusion: What to Expect From May Weather in Castro

In May, Castro enjoys a delightful transition into warmer weather, with temperatures rising significantly from the cooler months, making it a perfect time for outdoor activities. The average temperature of around 19°C feels pleasant, while the maximum can reach up to 28°C, marking a shift toward summer warmth. Although rainfall is more frequent than in the summer months, with 34 mm across approximately 5 days, the vibrant greenery and blooming flowers make the occasional shower a welcome sight. The humidity level around 79% adds to the mild, refreshing atmosphere. As you prepare for your visit, make sure to check out more detailed insights on the local climate in our guide: Castro Climate.