Last updated: August 21, 2025
Experience the delightful weather of Ios, Greece in May, where the average temperature hovers around a pleasant 19°C (66°F). Daytime highs can reach up to 23°C (74°F), making it perfect for exploring the island’s stunning landscapes. With a minimum temperature of 15°C (60°F) at night, evenings are comfortably mild. Expect minimal precipitation—only about 4 mm (0.1 in) across the month, with not a single rainy day in sight. This month’s humidity levels are around 81%, adding a refreshing touch to the warm Mediterranean climate. Whether soaking up the sun on the beach or strolling through charming villages, May offers an idyllic escape in Ios.
As May unfolds in Ios, Greece, a delightful warmth begins to envelop the island, marking a significant shift from the cooler preceding months. With minimum temperatures averaging around 15°C (60°F) and peaking at 23°C (74°F), the days grow increasingly inviting, perfect for outdoor adventures and soaking up the sun. The average temperature rises to a pleasant 19°C (66°F), promising a beautiful start to the summer season. This transition not only enhances the island's natural beauty but also invites visitors to explore its stunning landscapes and vibrant culture, setting the stage for a memorable Mediterranean experience.
May in Ios, Greece, marks a transition into dry, sun-soaked days, as precipitation drops significantly to just 4 mm (0.1 in), making it one of the driest months of the year. This is a sharp decline from the wetness of winter and early spring, where January sees the highest rainfall at 88 mm (3.5 in) over 12 days. By the time May arrives, the island enjoys complete dryness with 0 precipitation days, allowing visitors to fully embrace the lush landscapes and vibrant beaches that emerge after the rains. This trend continues into June, with rainfall further tapering off, establishing a pattern of pleasantly warm and largely arid conditions as summer approaches.
May brings a noticeable increase in humidity to Ios, Greece, with levels rising to 81%, marking the start of a more humid phase as the island transitions into summer. This uptick from the consistent 77% seen in earlier months indicates a shift in the climate as warmer temperatures begin to dominate. As the summer progresses, humidity levels will gradually decrease, reaching their lowest during the peak of July and August, at 71% and 66% respectively. Overall, May serves as a precursor to the hot, sun-drenched days ahead, enveloping Ios in a lush, inviting atmosphere that beckons visitors to embrace the beauty and vibrancy of the island.
As May sweeps into Ios, Greece, the UV Index peaks at a striking 9, categorizing exposure as very high and resulting in a burn time of just 15 minutes. This trend of increased UV intensity, beginning in April, signals the approach of summer when sun protection becomes essential. Observably, the UV Index not only reaches its pinnacle this month but maintains its elevated level, continuing into June, July, and August with similar extreme values. By September, there’s a slight decline to 8, still in the very high range, before tapering off in the cooler months. Travel safely and be sun savvy by staying informed through resources such as Ios UV Index.
UV Risk Categories
May brings a delightful surge of sunshine to Ios, Greece, with an impressive 401 hours of golden rays illuminating the island. This marks a notable uptick from the preceding months, showcasing a steady rise in sunlight as spring transitions to summer. The increase in daylight is part of a broader trend, with each month from January through April gradually garnering more sunshine, culminating in May's vibrant glow. As summer approaches, June exceeds May with 412 hours of sunshine, yet May remains a charming prelude, inviting visitors to bask in its warmth and enjoy the stunning natural beauty that Ios has to offer. The perfect setting for exploration and relaxation, May serves as a reminder of the joyful abundance of sunlight that defines this enchanting Greek island.
As spring transitions into early summer on the picturesque island of Ios, Greece, **May shines brightly with a remarkable 78% chance of sunny weather. This signifies a notable increase compared to the previous months, where the likelihood of sun fluctuated between 44% in January and 57% in April. The trend is clear: as the season progresses, so does the sun, peaking to a dazzling 99% in July and August. With May's inviting warmth and golden rays, it becomes an ideal time for travelers seeking to bask in the beauty of Ios before the summer rush.
As spring gently transitions into summer, May in Ios, Greece, offers an inviting increase in daylight, boasting 14 hours of sunshine. This month marks a significant leap from the 13 hours observed in April, reflecting the impending summer warmth. The trend of extending daylight hours continues into June and July, maintaining the same generous 14-hour offering, perfect for indulging in outdoor adventures and soaking up the sun. As summer winds down into August, daylight begins its gradual decline, yet 13 hours still beckons, ensuring plenty of time for exploration. This pattern underscores the allure of Ios during the warmer months, where long, sunlit days create an enchanting backdrop for unforgettable experiences.
In May, the winds in Ios, Greece begin to calm after the brisk spring months, averaging 5.6 m/s (13 mph)—a noticeable drop from the earlier gusts of March and April. This gentle breeze creates a pleasant atmosphere, ideal for enjoying the island's stunning beaches and vibrant nightlife without the overwhelming forces of wind found in earlier months. As summer approaches, the wind speed continues to dip slightly in June, reaching its annual low at 5.1 m/s (11 mph), offering visitors a serene environment to soak up the sun. Overall, May marks a transition into warmer days, where the mild winds complement the beauty of Ios, making it an inviting time to explore the island's enchanting landscapes.
Weather in Ios varies notably across the year, with each month offering distinct climate conditions. This page compares May’s weather to other months in Ios, focusing on differences in temperature, rainfall, humidity, and UV levels.
May typically boasts a much warmer climate compared to January, with average temperatures ranging from a minimum of 15°C (60°F) to a maximum of 23°C (74°F). In contrast, January's cooler temperatures range from 4°C (39°F) to 20°C (68°F), making it significantly chillier. Additionally, May enjoys very little precipitation, averaging only 4 mm over zero rainy days, while January sees much wetter conditions, with 88 mm of rainfall spread across 12 days. Despite January having slightly lower humidity at 77%, May's humidity is relatively high at 81%, often contributing to a pleasant spring atmosphere. For more insights on January weather, check out Ios weather in January.
In comparing the weather between May and February, May offers significantly warmer temperatures, with a minimum of 15°C (60°F) and an average of 19°C (66°F), while February's temperatures range from a cooler minimum of 7°C (44°F) to an average of 14°C (57°F). Additionally, May experiences much lower precipitation, with only 4 mm (0.1 in) over the course of 0 days, contrasting sharply with February's 57 mm (2.3 in) of rain spread across 8 days. Despite May having slightly higher humidity at 81%, February's humidity level remains relatively high at 76%. For more detailed insights about February weather, you can check this link: Ios weather in February.
In comparing the weather between March and May, it's clear that May brings significantly warmer temperatures, with a minimum of 15°C and an average of 19°C, compared to March's cooler minimum of 6°C and average of 14°C. Additionally, May is characterized by minimal precipitation, with only 4 mm recorded over 0 days, while March experiences a much wetter climate with 42 mm of rain over 7 days. Humidity levels remain relatively similar, at 81% in May and 77% in March. For a more detailed forecast, you can check Ios weather in March.
In comparing the weather between April and May, May experiences a noticeable increase in temperatures, with minimums rising to 15°C (60°F) and an average of 19°C (66°F), compared to April's minimums of 10°C (51°F) and an average of 16°C (61°F). Additionally, May boasts much drier conditions, receiving only 4 mm (0.1 in) of precipitation over no days, while April has 15 mm (0.6 in) over two days. Humidity levels are slightly higher in May at 81%, compared to 77% in April, contributing to a comfortable yet warmer climate. For more details on April weather, you can check Ios weather in April.
In May, the weather in Ios is characterized by mild temperatures, with a minimum of 15°C (60°F) and an average of 19°C (66°F), peaking at 23°C (74°F). The month is quite dry, receiving only 4 mm (0.1 in) of precipitation over zero rainy days, and the humidity is relatively high at 81%.
In contrast, June sees a slight increase in temperatures, with a minimum of 18°C (64°F) and an average of 22°C (73°F), reaching up to a maximum of 27°C (81°F). The month is only slightly wetter, with 3 mm (0.1 in) of rainfall occurring over one rainy day, and humidity decreases slightly to 77%. For more detailed information, check out Ios weather in June.
May and July present distinct weather patterns on the island. In May, temperatures range from a minimum of 15°C (60°F) to a maximum of 23°C (74°F), making it pleasantly mild with an average of 19°C (66°F). The month experiences 4 mm of precipitation but enjoys no rainy days, contributing to a high humidity level of 81%. In contrast, July sees warmer conditions, with temperatures ranging from 22°C (72°F) to 28°C (83°F) and an average of 25°C (77°F). Furthermore, July is dry, recording no precipitation and maintaining a lower humidity level of 71%. This makes July the ideal choice for sun-seekers. For more details, you can check Ios weather in July.
May and August present distinctly different weather patterns. In May, temperatures range from a mild 15°C (60°F) at night to a comfortable average of 19°C (66°F) during the day, peaking at 23°C (74°F). The month sees very little precipitation, with only 4 mm and no rainy days, but the humidity is relatively high at 81%. In contrast, August warms up significantly, with nighttime lows at 22°C (72°F) and daytime averages reaching 25°C (77°F), peaking at 29°C (85°F). Like May, August experiences minimal precipitation, registering just 1 mm without any rainy days, but the humidity drops to 66%. Overall, August offers a warmer and drier experience compared to the cooler and more humid May. For more specifics on August weather, check Ios weather in August.
In May, the weather is mild with temperatures ranging from a minimum of 15°C (60°F) to a maximum of 23°C (74°F), accompanied by relatively high humidity at 81%. The month experiences very little precipitation, with only 4 mm recorded over zero rainy days. In contrast, September brings slightly warmer temperatures, with a minimum of 19°C (67°F) and a maximum of 27°C (81°F), while humidity decreases to 70%. Precipitation levels remain low in September as well, with just 3 mm and no rainy days. For a detailed look at September's weather, you can check out Ios weather in September.
May and October in Ios present a pleasant contrast in weather. In May, temperatures range from a minimum of 15°C (60°F) to a maximum of 23°C (74°F), with an average of 19°C (66°F) and virtually no precipitation, resulting in a humid atmosphere at 81%. In comparison, October sees slightly warmer temperatures, with lows of 15°C (60°F) and highs of 26°C (79°F), averaging 21°C (69°F). However, this month also experiences more precipitation, with 18 mm (0.7 in) over three days and a decrease in humidity to 76%. For more details, check Ios weather in October.
May and November present distinct weather experiences. In May, temperatures range from a mild 15°C (60°F) to a warm 23°C (74°F), accompanied by low precipitation and high humidity at 81%. This makes for a pleasant and dry month, perfect for outdoor activities. In contrast, November sees slightly cooler temperatures, with lows of 12°C (55°F) and highs reaching 22°C (73°F). However, it is significantly wetter, with an average of 48 mm (1.9 in) of rain over six days, leading to a drop in humidity to 77%. This shift in weather patterns highlights the transition from spring to late fall. For more details, check out Ios weather in November.
May and December present contrasting weather conditions. In May, the temperatures are generally warmer, with averages around 19°C (66°F), peaking at 23°C (74°F), and very little rainfall, only about 4 mm (0.1 in) over the month. Humidity is relatively high at 81%, creating a pleasant spring atmosphere. In stark contrast, December experiences cooler temperatures, averaging 15°C (60°F) and a maximum of 20°C (68°F). This month sees significantly more precipitation, with 82 mm (3.2 in) spread over approximately 13 days, and humidity levels are a bit lower at 78%. For a more detailed look at December weather, you can visit Ios weather in December.
As May arrives on Ios, the weather emerges as a delightful precursor to the summer season. With pleasant average temperatures hovering around 19°C (66°F), days are increasingly warmer, notably contrasted by cooler nights. Unlike the wetter months, May enjoys a dry spell with zero days of precipitation, making it an ideal time for outdoor adventures. The 81% humidity offers a refreshing coastal breeze, enhancing the overall experience without the sweltering heat of summer. For more details on this island's climate, check out Ios Climate.