Last updated: August 21, 2025
May in Piraeus, Greece offers a delightful transition into warmer weather, with maximum temperatures peaking at 36°C (97°F) and an average of 21°C (70°F). The nights remain refreshing, with minimum temperatures dipping to around 10°C (51°F). Although the city experiences a modest 23 mm (0.9 in) of precipitation over 4 days, the humidity tends to linger at a cozy 77%, adding to the Mediterranean charm. This vibrant weather sets the perfect stage for enjoying the picturesque coastline and exploring the rich history of the region.
In May, Piraeus, Greece, transitions into warmer weather, marking a significant shift from the brisk early months of the year. With minimum temperatures rising to 10°C (51°F) and averaging around 21°C (70°F), this month sets the stage for the upcoming summer heat. The maximum temperatures can soar to a sizzling 36°C (97°F), illustrating the dramatic increase that the Mediterranean climate can bring. As the days lengthen and the sun shines brighter, May becomes the perfect time for outdoor adventures, enjoying the coastal beauty, and experiencing the vibrant Greek culture, all while savoring the delightful warmth that envelopes this picturesque port city.
In Piraeus, Greece, May marks a transition into drier weather, with only 23 mm (0.9 in) of precipitation falling over just 4 days. This significant decrease in rainfall compared to earlier months reflects a shift from the wetter spring season, where January through April averaged higher values, peaking at 57 mm in January. As the region shifts into summer, rainfall dwindles further, with June and July also recording notably low precipitation levels. This trend illustrates Piraeus's characteristic Mediterranean climate, where dry and sunny conditions become more prevalent, paving the way for the warm summer months ahead.
In May, Piraeus experiences an increase in humidity, reaching 77%, a slight rise from the previous months. This uptick is part of a broader trend that sees humidity levels gradually decrease from the high of 76% in January down to the summer's drier months. As the city transitions from the cooler spring temperatures to the warmth of summer, the humidity fluctuates but tends to remain relatively high compared to the upcoming months. Notably, after May, humidity begins to dip, with June and July seeing levels of 71% and 68%, respectively. This pattern highlights a shift in the Mediterranean climate, where late spring brings a comforting yet humid atmosphere before the summer heat begins to dry things out.
As spring transitions into summer, May in Piraeus, Greece, brings a significant spike in UV intensity, reaching a UV Index of 10, categorized as very high. This trend is notable as it marks a continuation of increasing UV levels observed since March. With a burn time of just 15 minutes, it's crucial for outdoor enthusiasts to take precautionary measures during this month, similar to what they'll need through the summer months of June, July, and August, which maintain the same UV Index rating. It's a reminder that as the warmth of the season approaches, so does the need for diligent sun protection, making awareness of the UV Index more essential than ever. For more detailed information, visit Piraeus UV Index.
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May in Piraeus, Greece, shines brightly with 398 hours of sunshine, marking a delightful transition into the summer months. This increase is part of a broader trend of growing daylight that begins in winter with a modest 200 hours in January and steadily climbs each month. By April, the sun begins to assert itself, with 346 hours of golden rays, but it is in May that the warm Mediterranean sun truly comes alive, bringing with it both beauty and vitality. Following this crescendo, June and July see even more sunshine, with 409 and 423 hours respectively, showcasing Piraeus as a sun-kissed destination. However, as summer wanes into August, sunlight slightly recedes to 396 hours, yet it still remains abundant. Overall, May serves as a pivotal month, where nature’s brilliance hints at the vibrant summer ahead, inviting residents and visitors alike to bask in its warmth.
In Piraeus, Greece, the likelihood of sunny weather takes a significant leap in May, with a promising 70% chance of sunshine. This increase is part of a broader trend as the spring months transition into summer; for instance, April records a 55% chance, while June soars to 71%. Such rising probabilities highlight May as a delightful time to enjoy the outdoors, as the vibrant Mediterranean landscape basks in the warmth of approaching summer. As temperatures rise and daylight lengthens, May stands out not only for its pleasant weather but also for the promise of sun-filled days leading into the sun-drenched months of July and August, which boast chances of 94% and 95%, respectively.
As spring gives way to summer in Piraeus, Greece, daylight duration sees a delightful increase, particularly in May when it reaches a vibrant 14 hours. This trend begins in January with just 9 hours, gradually lengthening to 10 hours in February and 11 hours in March, highlighting the gradual transition toward longer, brighter days. By April, the daylight expands to 13 hours, setting the stage for May's peak. Following May, daylight remains consistent at 14 hours through June and July, creating a bright, sun-soaked atmosphere for outdoor activities and exploration. As summer wanes, daylight slowly retreats to 13 hours in August and continues to decline to 9 hours by December, offering a rhythmic dance of light and shadow throughout the year.
In Piraeus, Greece, May heralds the transition into warmer months, characterized by a subtle dip in wind speeds, averaging at 2.4 m/s (5 mph). This marks one of the calmest months, following the gentle breezes of April. Interestingly, while spring brings a serene atmosphere, the wind begins to pick up again as summer approaches, with July experiencing a steadier breeze at 3.1 m/s (7 mph). Observing the trend, there is a gradual increase in wind speeds as the year progresses towards autumn, particularly in the later months that often invite stronger gusts. Overall, May stands as a tranquil prelude to the bustling summer sea activities in this vibrant port city.
Weather in Piraeus varies notably across the year, with each month offering distinct climate conditions. This page compares May’s weather to other months in Piraeus, focusing on differences in temperature, rainfall, humidity, and UV levels.
May and January present distinctly different weather patterns. In May, temperatures can range from a pleasant 10°C (51°F) at night to a sizzling maximum of 36°C (97°F) during the day, with an average of 21°C (70°F). The month typically sees minimal rainfall, with a total of 23 mm (0.9 in) over about 4 days, and humidity levels around 77%. In contrast, January is much cooler, featuring temperatures that dip to a minimum of -4°C (25°F) and peak at 22°C (72°F), with an average of 9°C (48°F). It experiences more precipitation, totaling 57 mm (2.2 in) across approximately 7 days, and slightly lower humidity at 76%. For a closer look at the January weather specifics, you can check Piraeus weather in January.
In comparing the weather of May and February, we find a stark contrast in temperatures and conditions. May boasts a much warmer climate, with average temperatures reaching around 21°C (70°F) and maximums peaking at 36°C (97°F), while February maintains a cooler atmosphere, showing averages around 10°C (51°F) and highs of only 20°C (68°F). Additionally, May experiences less precipitation, with only 23 mm (0.9 in) over approximately four days, compared to February's higher rainfall of 48 mm (1.9 in) spread across eight days. Humidity levels are relatively similar, but May’s warmth combined with slightly higher humidity at 77% creates a more humid feel compared to February’s 75%. For more details on February weather in Piraeus, you can visit Piraeus weather in February.
In comparing the weather between March and May, it's evident that May tends to be significantly warmer. With temperatures ranging from a minimum of 10°C (51°F) to a maximum of 36°C (97°F), May offers an average of 21°C (70°F). In contrast, March experiences a much cooler climate, with temperatures starting at 0°C (32°F) and peaking at 23°C (74°F), averaging only 12°C (54°F). Additionally, while May sees lower precipitation levels at 23 mm (0.9 in) over 4 days, March has higher precipitation at 39 mm (1.5 in) across 5 days. Humidity levels are relatively similar, with May at 77% and March at 74%. For more details, you can check Piraeus weather in March.
In comparing the weather of April and May, May experiences warmer temperatures, with a minimum of 10°C (51°F) and an average of 21°C (70°F), while April has a cooler minimum of 4°C (40°F) and an average temperature of 15°C (60°F). The maximum temperatures in May can reach up to 36°C (97°F), significantly higher than April's peak of 29°C (85°F). Precipitation also varies, with May receiving only 23 mm (0.9 in) over 4 days, compared to April's 42 mm (1.6 in) over 5 days. Humidity levels are slightly higher in May at 77%, compared to 75% in April. For a closer look at April's weather specifics, you can visit Piraeus weather in April.
In comparing the weather conditions of May and June, we observe a notable increase in temperature with June averaging 25°C (77°F) compared to May's 21°C (70°F). While May experiences a maximum temperature of 36°C (97°F), June slightly raises the bar with a maximum of 38°C (101°F). Additionally, June sees a bit more precipitation, accruing 33 mm (1.3 in) over 5 days, as opposed to May's 23 mm (0.9 in) over 4 days. Humidity levels also show a slight decline in June at 71%, down from May's 77%. For a more detailed look at June weather, visit Piraeus weather in June.
May and July present distinct weather patterns, with May generally being milder and more variable. In May, temperatures range from a cool minimum of 10°C (51°F) to a warm maximum of 36°C (97°F), averaging around 21°C (70°F). The month sees about 23 mm (0.9 in) of precipitation over four days and experiences relatively high humidity at 77%. In contrast, July boasts significantly warmer conditions, with temperatures fluctuating from a minimum of 19°C (67°F) to a scorching maximum of 42°C (108°F), leading to a higher average temperature of 28°C (83°F). Precipitation decreases notably to just 9 mm (0.4 in) over only two days, and humidity levels drop to 68%. For more specifics on July's weather, you can visit Piraeus weather in July.
May and August showcase distinct climatic characteristics in terms of temperature and precipitation. In May, temperatures range from a minimum of 10°C (51°F) to a maximum of 36°C (97°F), with an average of 21°C (70°F). This month experiences moderate rainfall, totaling 23 mm (0.9 in) over four days, and a higher humidity level at 77%. In contrast, August is notably warmer, with temperatures fluctuating between a minimum of 19°C (66°F) and a scorching maximum of 43°C (109°F), averaging at 28°C (83°F). This month is much drier, receiving only 4 mm (0.2 in) of precipitation on no days and exhibiting lower humidity at 63%. For more detailed information on weather trends, you can check Piraeus weather in August.
May and September display distinct yet mild weather patterns. May marks the transition into summer with temperatures ranging from a minimum of 10°C (51°F) to a maximum of 36°C (97°F), with an average of 21°C (70°F). The month sees about 23 mm (0.9 in) of rainfall over four days, combined with a higher humidity level of 77%. In contrast, September offers a warmer average of 24°C (76°F) with minimum and maximum temperatures between 13°C (55°F) and 37°C (98°F) respectively. This month experiences slightly less precipitation at 17 mm (0.7 in) over just two days, and a reduced humidity of 65%, making it a drier period overall. For more detailed insights into the weather in September, visit Piraeus weather in September.
May and October present distinct weather patterns. In May, temperatures range from a minimum of 10°C (51°F) to a maximum of 36°C (97°F), with an average of 21°C (70°F), making it generally warmer. This month sees lower precipitation levels at 23 mm (0.9 in) over four days, coupled with higher humidity at 77%. In contrast, October experiences cooler temperatures, with a minimum of 7°C (45°F) and a maximum of 31°C (89°F), averaging 19°C (66°F). Precipitation increases slightly to 30 mm (1.2 in), also over four days, while humidity remains relatively lower at 72%. For more details on October weather, you can check Piraeus weather in October.
May and November present contrasting weather patterns, reflecting the shift from spring to autumn. In May, temperatures range from a mild 10°C (51°F) at night to a warm 36°C (97°F) during the day, with an average of 21°C (70°F). The month sees relatively low precipitation at 23 mm (0.9 in) over just 4 days, accompanied by humidity levels around 77%. In contrast, November experiences cooler temperatures, with a minimum of 4°C (39°F), an average of 15°C (59°F), and a maximum of 25°C (78°F). Precipitation is higher at 48 mm (1.9 in) across 7 days, and humidity is slightly lower at 75%. For more details on November weather, check out Piraeus weather in November.
May and December present contrasting weather experiences. In May, temperatures range from a mild 10°C (51°F) at night to a warm 36°C (97°F) during the day, with an average of 21°C (70°F). The humidity is relatively high at 77%, but precipitation is low, totaling just 23 mm (0.9 in) over approximately 4 days. In contrast, December sees cooler temperatures, with a minimum of 1°C (34°F) and an average of 11°C (53°F), peaking at 21°C (70°F). Precipitation increases significantly to 66 mm (2.6 in) across about 9 days, while humidity remains similar at 76%. For more details on December weather in Piraeus, you can visit the following link: Piraeus weather in December.
As May unfolds in Piraeus, it heralds a delightful shift towards warmer temperatures, enticing locals and tourists alike to embrace the outdoors. Unlike the cooler months preceding it, May showcases a pleasant average temperature that encourages leisure activities under the sun. While the days are generally drier with less rainfall, the humidity still lingers, adding a touch of Mediterranean warmth. This month stands out as a transition, promising sunny afternoons that often peak at an impressive 36°C, while the cooler nighttime temperatures provide a refreshing respite. For more insights into the unique climate of this vibrant port city, visit Piraeus Climate.