Last updated: February 24, 2025
In Cascais, Portugal, May unveils a delightful transition into warmer weather, featuring a maximum temperature of 24°C (76°F) and an average of 16°C (61°F). The minimum temperatures can dip to a refreshing 11°C (53°F), offering a pleasant escape from the heat. While the month experiences a total precipitation amount of 33 mm (1.3 in) over just 3 days, humidity remains around a comfortable 70%. This combination creates an inviting atmosphere perfect for exploring the picturesque coastal town nestled along the Atlantic.
In Cascais, Portugal, May marks a delightful transition into warmer weather, with temperatures showcasing a noticeable upward trend. The month kicks off with a minimum of 11°C (53°F) and climbs to a comfortable maximum of 24°C (76°F), offering plenty of opportunities to enjoy the outdoors. The average temperature reaches a pleasant 16°C (61°F), suggesting that May is an ideal time for both locals and tourists to bask in the sun and explore the stunning coastal scenery. As spring fully unfurls, the mild climate invites leisurely strolls along the seaside and vibrant outdoor events, making it a captivating destination during this enchanting month.
May in Cascais, Portugal, marks a notable shift in precipitation patterns, as the month experiences a significant drop in rainfall compared to the previous months. With only 33 mm (1.3 in) of rain spread across just 3 days, May stands out as one of the driest months of the year, signaling the onset of the warmer, drier summer season. This decrease follows the gradual increase seen from January to April, where monthly averages rose from 42 mm (1.7 in) to 71 mm (2.8 in). The transition from the spring showers to the light precipitation of the early summer is characteristic of Cascais’ climate, allowing residents and visitors to enjoy more sun-soaked days as they prepare for the coming heat of June and beyond.
In Cascais, Portugal, May sees a moderate humidity level of 70%, consistent with the trend observed over the preceding months. The transition from winter's 85% humidity in January to May's more comfortable levels highlights a gradual decrease, creating a delightful and welcoming atmosphere as spring unfolds. The humidity remains stable into early summer, dipping to 63% in June, which indicates a shift towards drier conditions. This pattern of decreasing humidity not only enhances the appeal of outdoor activities but also contributes to the region's charm, making May an inviting time for both locals and visitors to enjoy the beautiful coastal landscape.
As spring unfolds in Cascais, Portugal, the UV Index takes a sharp climb in May, registering at an impressive 10, placing it firmly in the very high exposure category. This marks a continuation of the rising trend observed since April, where the UV Index reached 9. With a burn time of just 15 minutes, it’s clear that the sun's intensity demands attentiveness to sun safety practices. Residents and visitors alike should prepare for this period of heightened solar radiation, as the UV Index will remain elevated, peaking in June at 11. As you enjoy the beautiful coastal scenery, don’t forget to check the updates and plan appropriately for sun protection by visiting Cascais UV Index.
UV Risk Categories
As spring unfurls into May, Cascais, Portugal basks in a glorious 405 hours of sunshine, marking it as one of the sunniest months of the year. This radiant transition from April's 351 hours highlights a clear upward trend, as the days grow longer and brighter. Following this peak, June continues the trend with 409 hours, while July reaches 420 hours, showcasing the region's captivating sun-soaked summers. August, though slightly lower at 395 hours, still offers ample sunlight, ensuring that the charm of Cascais shines brightly throughout the warm months. As autumn approaches, sunshine hours begin to recede, but May remains a delightful reminder of nature's brilliance during this splendid time of year.
May in Cascais, Portugal, offers a delightful opportunity for sun-seekers, with a 57% chance of sunny weather. This month stands out as a transition between the cooler, cloudier days of early spring and the more consistently bright summer months that follow. While March shows a promising 60% likelihood of sunshine, May's figure reflects a gradual increase, setting the stage for the sunny months ahead—June peaks at an impressive 65%, leading into the height of summer. Overall, as the year progresses, the trend clearly shows an upward trajectory in sunny days, making May an enticing choice for outdoor enthusiasts looking to bask in the warmth of the sun.
As spring transitions into summer, Cascais, Portugal experiences a delightful increase in daylight hours, particularly in May, when the sun graces the region with 14 hours of daylight. This month marks a significant leap from the 13 hours seen in April, highlighting the shift toward longer, sunlit days. Following May, daylight remains consistent at 14 hours through June and July, offering ample opportunity for outdoor activities and explorations along the stunning coastline. As summer wanes, daylight gradually decreases, dropping to 12 hours in September and further down to 10 by November. This rhythmic cycle of daylight not only influences everyday life in Cascais but also enhances the vibrant atmosphere as residents and visitors alike bask in the sun’s generous embrace during the late spring and early summer months.
In Cascais, Portugal, May marks a delightful shift in wind patterns, as the average wind speed rises to 7.3 m/s (16 mph), alongside the breezy charm that kicks off the summer season. This uptick in wind intensity compared to the spring months showcases the coastal region's enticing allure for water sports and outdoor activities. Following April's gentler breeze at 4.9 m/s (11 mph), May's winds refreshingly engage both locals and tourists alike. Interestingly, this robust wind speed continues through June and July, consistently hovering around the same average, before gradually tapering off in the late summer and autumn months. The winds of May not only invigorate the landscape but also herald the impending warmth and vibrant energy that Cascais is renowned for, making it a perfect time to immerse oneself in its coastal beauty.
The weather in Cascais 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 Cascais and find detailed weather information for every month.
May generally showcases warmer and more pleasant weather compared to January. With minimum temperatures averaging 11°C (53°F) and maximums reaching up to 24°C (76°F), May enjoys about 16°C (61°F) on average and only experiences 33 mm (1.3 in) of precipitation over just 3 days. In contrast, January is cooler, with temperatures ranging from a minimum of 7°C (45°F) to a maximum of 18°C (64°F), averaging around 13°C (56°F). It also sees more rainfall, totaling 42 mm (1.7 in) spread over 7 days, and higher humidity levels at 85%. For more specifics about January weather, you can check out this link: Cascais weather in January.
When comparing the weather in May and February, one can observe several notable differences. May enjoys a warmer climate, with temperatures ranging from a minimum of 11°C (53°F) to a maximum of 24°C (76°F) and an average of 16°C (61°F). In contrast, February experiences cooler temperatures, with a minimum of 9°C (48°F), an average of 13°C (56°F), and a maximum of 17°C (63°F). February also sees more precipitation, totaling 59 mm (2.3 in) over 8 days, compared to May’s 33 mm (1.3 in) over just 3 days. Humidity levels are relatively similar, with February at 75% and May slightly lower at 70%. For a detailed look at February's climate, you can check out Cascais weather in February.
In comparing the weather in May and March, we see a noticeable increase in temperature during the latter spring month. May boasts a higher average temperature of 16°C (61°F) compared to March's average of 14°C (57°F), with maximum temperatures reaching up to 24°C (76°F) in May versus March's peak of 19°C (66°F). However, March tends to be wetter, with 64 mm (2.5 in) of precipitation over 8 days compared to May's relatively drier conditions of 33 mm (1.3 in) over just 3 days. Both months have similar humidity levels, hovering around 70% in May and slightly higher at 72% in March. For more detailed weather insights, you can check Cascais weather in March.
When comparing the weather in April and May, we see a notable shift in temperatures and precipitation patterns. May experiences slightly warmer averages, with minimum temperatures starting at 11°C (53°F) and maximums reaching 24°C (76°F), while April has a cooler average with minimums of 10°C (50°F) and maximums of 21°C (71°F). Precipitation also drastically decreases in May, with only 33 mm (1.3 in) falling over 3 days, compared to April’s 71 mm (2.8 in) over 11 days, indicating a much drier month. Both months share similar humidity levels at 70%, but May tends to offer more favorable conditions for outdoor activities. For a closer look at the specifics of April's weather, check out Cascais weather in April.
In comparing the weather of May and June, we see a subtle shift in temperatures and precipitation. May typically experiences a wider temperature range with minimums around 11°C (53°F) and maximums reaching 24°C (76°F), averaging at 16°C (61°F). In contrast, June features a warmer minimum of 14°C (58°F) and a slightly lower maximum of 22°C (72°F), averaging at 17°C (63°F). Precipitation also decreases significantly in June, with only 12 mm (0.5 in) over just 2 days, compared to May's 33 mm (1.3 in) across 3 days. Additionally, humidity drops from 70% in May to 63% in June, contributing to a more pleasant experience as summer begins. For more detailed information, refer to Cascais weather in June.
In May, the weather is characterized by a wider temperature range, with minimums around 11°C (53°F) and maximums reaching up to 24°C (76°F). The average temperature hovers at 16°C (61°F), along with relatively high humidity levels at 70%, and some rainy days, accumulating about 33 mm (1.3 in) of precipitation over three days. In contrast, July offers a much milder climate, with temperatures ranging from a minimum of 16°C (60°F) to a maximum of 21°C (70°F) and an average of 18°C (64°F). This month is notably drier, with only 3 mm (0.1 in) of precipitation and no rainy days, and the humidity decreases to around 60%. For more detailed information, visit Cascais weather in July.
In May, the weather is generally mild, with temperatures ranging from a minimum of 11°C (53°F) to a maximum of 24°C (76°F) and an average temperature of 16°C (61°F). The month sees about 33 mm (1.3 in) of precipitation spread over three days, contributing to a relatively high humidity level of 70%. In contrast, August offers a warmer climate, with minimum temperatures at 16°C (61°F) and maximums reaching 23°C (74°F), averaging around 18°C (65°F). Notably, August experiences significantly less rainfall, with only 4 mm (0.1 in) over just one day, and lower humidity at 60%. For more detailed insights into the weather during this summer month, you can check the Cascais weather in August.
In comparing the weather of May and September, we find that May tends to be slightly warmer during the day, with average temperatures around 16°C (61°F) and peak at 24°C (76°F), while September features an average of 18°C (65°F) and a maximum of 23°C (74°F). The nights in May are cooler, with minimum temperatures around 11°C (53°F), compared to September's milder nights at 15°C (60°F). Both months experience similar amounts of precipitation, with May recording 33 mm (1.3 in) over 3 days and September close behind at 32 mm (1.2 in) over 2 days. Humidity levels are also comparable, slightly higher in May at 70% versus September's 67%. For more details, you can check Cascais weather in September.
When comparing May and October weather, both months feature similar minimum temperatures, with May averaging 11°C (53°F) and October slightly cooler at 11°C (52°F). However, October tends to be more humid, with a humidity level of 74% compared to May's 70%. The average temperature in October rises to 18°C (64°F), slightly above May's average of 16°C (61°F), but the maximum temperatures are quite close, with October reaching 23°C (74°F) and May peaking at 24°C (76°F). Rainfall is also more pronounced in October, with 53 mm (2.1 in) of precipitation over 6 days, whereas May experiences just 33 mm (1.3 in) over 3 days. For more details on October weather, check Cascais weather in October.
May and November in Cascais exhibit distinct weather patterns despite sharing similar average temperatures. In May, temperatures range from a minimum of 11°C (53°F) to a maximum of 24°C (76°F), accompanied by relatively low precipitation of 33 mm (1.3 in) over just 3 days, resulting in a humidity level of around 70%. In contrast, November experiences cooler maximum temperatures, peaking at 20°C (68°F), but sees significantly higher rainfall with 89 mm (3.5 in) spread over 11 days, leading to increased humidity at 83%. For a more detailed look at the weather conditions, check out Cascais weather in November.
May typically enjoys a milder and sunnier climate compared to December, with average temperatures ranging from a minimum of 11°C (53°F) to a maximum of 24°C (76°F). The month sees relatively low precipitation, averaging just 33 mm (1.3 in) over about three days, and maintains a comfortable humidity level of 70%. In contrast, December experiences cooler temperatures, with a minimum of 9°C (49°F) and a maximum of 17°C (63°F). This month is also considerably wetter, accumulating around 73 mm (2.9 in) of rain across approximately ten rainy days, along with a higher humidity level of 85%. For more details on December weather, you can visit Cascais weather in December.
As you step into May in Cascais, you’ll experience a delightful shift from the cooler spring months. With a blend of comfortable temperatures and a refreshing sea breeze, this time of year brings average highs of 24°C (76°F), making it much warmer than the preceding months. While some light rain may fall, the total precipitation is minimal, allowing plenty of opportunity to enjoy the outdoors. The relatively low humidity levels ensure that even warmer days feel pleasant. Overall, May serves as an inviting prelude to the summer season, offering the perfect conditions for exploration and relaxation. For more detailed insights, visit Cascais Climate.