Last updated: August 21, 2025
May in Kos, Greece offers a delightful climate, where temperatures gracefully rise with a maximum of 24°C (76°F) and an average lingering around 20°C (68°F). The minimum temperature dips to a comfortable 15°C (60°F), making it an ideal time for outdoor exploration. With only 7 mm (0.3 in) of precipitation spread over 2 days, visitors can expect plenty of sunshine despite the 81% humidity that adds a touch of warmth to the vibrant atmosphere. Whether you’re lounging on the beach or strolling through historical sites, May presents the perfect backdrop for experiencing the beauty and culture of this enchanting island.
May marks a delightful transition into warmer weather in Kos, Greece, with temperatures beginning to rise and nature in full bloom. With a minimum of 15°C (60°F) and an average of 20°C (68°F), you'll experience pleasant days perfect for exploring the island's stunning beaches and rich history. The maximum reaches a comfortable 24°C (76°F), making it ideal for outdoor activities and leisurely strolls. This month signals a significant leap from the cooler temperatures of the earlier months, setting the stage for the summer ahead. As the days grow longer and sunnier, May becomes an enticing time to immerse yourself in the captivating charm of Kos.
In May, Kos, Greece experiences a notable shift in precipitation, with a scant 7 mm (0.3 in) recorded over just two days. This marks a remarkable decline from the wetter months preceding it, such as April’s 36 mm. The transition to drier conditions signifies the onset of summer, as rainfall dramatically decreases with June and July seeing almost no precipitation. This trend illustrates the island's Mediterranean climate, where spring showers give way to long, sun-drenched days perfect for enjoying the beautiful coastal scenery. As visitors flock to Kos in May, they can expect mild weather and very little interruption from the rain, making it an ideal time for outdoor activities and exploring the island's stunning landscapes.
In May, Kos, Greece, experiences a notable rise in humidity, peaking at 81%—the highest level recorded for the month. This increase marks a subtle shift compared to the consistent 77% humidity seen in the preceding months of January to April. As spring transitions to summer, the atmosphere grows increasingly lush and vibrant, creating a warm, inviting environment for visitors. However, this elevation in humidity is followed by a decline in the hotter months, with June reverting to 77%, hinting at the annual rhythm of shifting humidity levels. Overall, May serves as a beautiful precursor to the sun-drenched summers typical of this idyllic Greek island.
As spring transitions into summer, May in Kos, Greece brings an intense surge in UV exposure, with the UV Index soaring to 10, classifying it in the very high category. This marks a significant leap from the previous months, highlighting the importance of sun protection as the burn time shortens to just 15 minutes. The upward trend from a moderate index in January and February to a high index by March and April illustrates the increasing strength of the sun as summer approaches. As you plan your activities, be mindful of the sun's power during this month and consult the Kos UV Index for timely updates to ensure a safe and enjoyable experience under the Mediterranean sun.
UV Risk Categories
As May unfolds in Kos, Greece, the island basks in an impressive 401 hours of sunshine, marking a significant leap from the earlier months. This vibrant month not only warms the hearts of locals and travelers alike but also signals the start of the peak season. Following a progressive increase from 212 hours in January to the delightful 352 in April, May shines as a true highlight, just before the summer months reach their zenith. As the sun-drenched days continue into June and July, offering 410 and 424 hours of luminous bliss, May stands out as the perfect prelude to an idyllic summer escape, making it an enticing option for those seeking both warmth and beauty.
As May approaches in Kos, Greece, the likelihood of sunny weather significantly increases, soaring to 79%. This marks a promising transition from the more variable conditions of early spring; for instance, April's sunshine chances dip to 56%. Following May, the trend only intensifies, with June and July boasting 94% and an impressive 98% sunshine likelihood, respectively. This progression highlights a clear shift towards the sun-drenched months of summer, making May a delightful prelude to the Mediterranean warmth that awaits in the peak season. Whether you're planning outdoor adventures or simply soaking up the sun, May promises ample sunny days in beautiful Kos.
In Kos, Greece, daylight gradually intensifies as the year unfolds, starting from a modest 9 hours in January and reaching its peak with 14 hours in May and June. This gradual increase not only highlights the arrival of spring but also sets the stage for vibrant summer days. As May begins, basking in 14 hours of glorious daylight, residents and visitors alike can fully embrace outdoor activities and the island's stunning landscapes. After June, daylight gradually wanes, ushering in the warm hues of autumn, yet the lingering brightness in May serves as a reminder of the sun-drenched days that define this beautiful locale.
In May, the winds in Kos, Greece exhibit a noticeable dip, with an average speed of 5.9 m/s (13 mph), marking a transition from the more robust gusts typically experienced earlier in the year. This is in contrast to the consistent winds of around 7.9 m/s (18 mph) seen in both January and April. As spring unfolds, the gentle breezes of May usher in a delightful calmness, inviting locals and visitors to enjoy outdoor activities and the stunning coastal views. The month acts as a breath of fresh air before the summer months, when wind speeds begin to rise again, averaging between 7.4 m/s (17 mph) and 7.6 m/s (17 mph) from June to August. Overall, May offers a brief respite in wind activity, perfectly complementing the island’s vibrant blossoming landscapes.
Weather in Kos varies notably across the year, with each month offering distinct climate conditions. This page compares May’s weather to other months in Kos, focusing on differences in temperature, rainfall, humidity, and UV levels.
May and January present contrasting weather conditions. In May, temperatures range from a minimum of 15°C (60°F) to a pleasant maximum of 24°C (76°F), with average humidity at 81% and minimal precipitation of 7 mm over just 2 days. In sharp contrast, January experiences cooler temperatures, with a minimum of 5°C (41°F) and a maximum of 18°C (66°F), alongside significant precipitation of 193 mm across 14 days. The humidity is slightly lower at 77%, but the increased rainfall makes January feel much wetter. For a closer look at January weather specifically, check Kos weather in January.
May typically offers warmer temperatures compared to February, with minimums around 15°C (60°F) and averages reaching 20°C (68°F). In contrast, February experiences cooler temperatures, with an average of 14°C (57°F) and a maximum of 18°C (66°F). Additionally, May is considerably drier, boasting only 7 mm (0.3 in) of precipitation over 2 days, whereas February sees a significant 108 mm (4.2 in) of rainfall over 11 days. The humidity is slightly higher in May at 81% compared to 76% in February. For a more detailed look at February weather conditions, check out Kos weather in February.
May weather in Kos is significantly warmer and drier compared to March. With average temperatures ranging from a minimum of 15°C (60°F) to a maximum of 24°C (76°F), May offers a pleasant climate for outdoor activities. In contrast, March sees much cooler temperatures, averaging between 4°C (40°F) and 18°C (65°F), and is notably wetter, with 95 mm (3.7 in) of precipitation over 8 days. Additionally, while May enjoys a higher humidity level of 81%, March’s humidity sits slightly lower at 77%. For more details on March weather, you can visit Kos weather in March.
May's weather is a notable improvement over April, with warmer temperatures and significantly less precipitation. While April experiences cooler minimum temperatures of 9°C (49°F) and a higher average of 16°C (62°F), May boasts a minimum of 15°C (60°F) and an average of 20°C (68°F). In terms of precipitation, April sees a substantial 36 mm (1.4 in) over five days, compared to a mere 7 mm (0.3 in) over just two days in May. Additionally, humidity levels in May are slightly higher at 81%, compared to April's 77%. For more details, visit Kos weather in April.
In comparing the weather between May and June, June tends to be warmer with average temperatures rising from 20°C (68°F) in May to 23°C (73°F). The maximum temperatures also increase significantly, peaking at 29°C (84°F) in June, compared to 24°C (76°F) in May. Additionally, June experiences slightly less precipitation, with only 6 mm (0.2 in) over just one day, in contrast to May's 7 mm (0.3 in) spread over two days. Humidity levels decrease marginally from 81% in May to 77% in June, contributing to a more comfortable atmosphere. For more details, you can check out Kos weather in June.
May and July showcase contrasting weather patterns. In May, temperatures range from a minimum of 15°C (60°F) to a maximum of 24°C (76°F), with an average of 20°C (68°F). During this month, there is a modest amount of rainfall totaling 7 mm over two days, and humidity levels are relatively high at 81%. In stark contrast, July experiences much warmer temperatures, with a minimum of 22°C (72°F) and a maximum of 30°C (86°F), averaging 25°C (78°F). Notably, July is dry, with no recorded precipitation and a decrease in humidity to 71%. For more detailed information, check out the Kos weather in July.
May and August present markedly different weather patterns. In May, temperatures range from a minimum of 15°C (60°F) to a maximum of 24°C (76°F), with an average of 20°C (68°F). The month experiences some rainfall, totaling 7 mm (0.3 in) over 2 days, and it has a higher humidity level of 81%. Conversely, August boasts warmer temperatures, with a minimum of 23°C (74°F), an average of 26°C (79°F), and a maximum reaching 30°C (87°F). Notably, August is characterized by dry conditions, featuring no rainfall and lower humidity at 66%. For more insights on August weather in this region, you can check the link: Kos weather in August.
May and September exhibit pleasant yet distinct weather patterns. In May, temperatures range from a mild 15°C to a comfortable 24°C, with an average of 20°C, accompanied by a higher humidity level of 81% and a slightly higher chance of light rain with about 7 mm of precipitation over 2 days. In contrast, September warms up further, boasting minimum temperatures of 19°C, an average of 24°C, and maximums reaching 28°C, while experiencing lower humidity at 70% and less precipitation, totaling only 4 mm over 1 day. For more details, you can refer to Kos weather in September.
May and October both feature mild temperatures, but there are notable differences in their weather patterns. In May, temperatures range from a minimum of 15°C (60°F) to a maximum of 24°C (76°F), with an average of 20°C (68°F). Precipitation is minimal, with only 7 mm (0.3 in) over 2 days, and humidity is relatively high at 81%. In contrast, October experiences slightly warmer average temperatures, with a minimum of 15°C (59°F) and a maximum of 25°C (78°F), averaging around 21°C (71°F). However, it also sees a significant increase in rainfall, totaling 57 mm (2.2 in) over 4 days, and slightly lower humidity at 76%. For a more detailed look at October weather, you can visit Kos weather in October.
In May, the weather tends to be pleasantly warm, with temperatures averaging around 20°C (68°F) and rarely exceeding 24°C (76°F). With only 7 mm (0.3 in) of precipitation spread over just 2 days, it's a relatively dry month that sees high humidity levels at 81%. In contrast, November experiences cooler temperatures, with an average of 19°C (66°F), peaking at 23°C (74°F) and dipping to a minimum of 11°C (52°F). However, it brings significantly more rainfall, totaling 123 mm (4.8 in) over 9 days, while humidity drops slightly to 77%. For detailed information about the weather conditions in November, you can check Kos weather in November.
In May, the weather is mild and pleasant, with temperatures ranging from a minimum of 15°C (60°F) to a maximum of 24°C (76°F), and an average of 20°C (68°F). The month experiences minimal precipitation, with only 7 mm (0.3 in) falling over just 2 days, and humidity levels around 81%. In contrast, December presents a cooler climate, with temperatures ranging from a minimum of 8°C (47°F) to a maximum of 20°C (69°F), averaging 15°C (60°F). This month sees a significant increase in rainfall, accumulating 237 mm (9.3 in) over 15 days, while humidity remains relatively stable at 78%. For more detailed insights, you can check out Kos weather in December.
As May arrives on the picturesque island of Kos, the weather transforms into a delightful blend of warmth and refreshing breezes. With temperatures averaging a pleasant 20°C (68°F), this month offers an inviting escape while keeping the chill of winter at bay. Unlike the scorching heat of July and August, May's climate is gentle, striking a perfect balance for outdoor adventures and beach lounging. The modest precipitation of only 7 mm over just a couple of days helps maintain the island's vibrant landscapes without dampening the spirits of sun-seekers. As humidity levels reach 81%, the atmosphere feels comfortably warm, making it a prime time for exploring the rich history and natural beauty of Kos. For a deeper dive into the weather trends and patterns, check out Kos Climate.