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What Is the Weather Like in Ios in May?

Avg High: 22°C / 72°F

Avg Low: 16°C / 62°F

Sea Temp: 19°C / 66°F

Rain Days: 2

Rainfall: 10 mm

Daylight: 14h 05m

Swimming: Borderline

Season: Shoulder

Key Facts

Worth Going?

Yes – great for walks, sea still cool

Weather in Ios in May

In Ios, May brings late-spring weather that is pleasantly warm and mostly dry. Temperatures typically peak at around 22°C / 72°F in the afternoon and fall to about 16°C / 62°F at night. Expect just 2 rainy days in a typical May. The sea averages about 19°C / 66°F, bracing, and too cool for many swimmers. Spring winds can still be brisk, but the hills turn green and wildflowers appear everywhere. Ios is a hilly island in the southern Cyclades, and its bays face in every direction, so there's usually a sheltered beach somewhere. Daylight lasts about 14 hours, leaving long, light evenings. Bring layers, with short sleeves for the day and a sweater or light jacket for later. It's a lovely time for walking, with fresh air and green countryside. Mornings and evenings are noticeably cooler than the middle of the day. It's pleasant to be outside from morning to evening, with sun protection at midday.

Swimming in Ios in May

The sea around Ios averages about 19°C / 66°F in May, refreshing rather than warm. The best time for swimming is July, August and September, with August usually the warmest. Mylopotas and Manganari are local favorites. Beach facilities are only partly open at this time of year. The sea is usually at its calmest early in the morning. If you feel the cold, a wetsuit top makes a difference.

Crowds & Prices in Ios in May

May is a shoulder month in Ios, busy enough to feel lively but well below the summer peak. Hotel rates sit between the winter lows and the summer peak. Early mornings and late afternoons are the quietest times at popular sights. Weekdays are calmer than weekends at the most popular spots. Staying slightly outside the main town usually means better value and more space. Booking a few weeks ahead is usually enough.

What's Open in Ios in May

Ferry services between Piraeus and Rafina and Ios are building up in May. By May, almost everything has reopened for the season. Museums and sites are open on extended summer hours. Most sites close on Easter Sunday and 1 May. Shops in tourist areas often stay open into the evening. Opening hours are long, with many tavernas serving until late.

Festivals & Holidays in Ios in May

1 May is a public holiday, when many Greeks head out to the countryside and make wreaths of spring flowers. Greek Easter sometimes falls in early May, and Whit Monday, fifty days later, is another long weekend. In Ios, as across Greece, these traditions are very much alive. Weekends bring family outings and long lunches, and the evenings grow livelier as the days lengthen.

Is May a Good Time to Visit Ios?

Yes, May is a good month for Ios, especially for walkers and sightseers. Expect highs of around 22°C / 72°F, lows near 16°C / 62°F and rain on around 2 days. The countryside is at its best and it's comfortably warm, but the sea is still refreshing rather than warm. It suits active travelers and anyone avoiding the peak season. For warmer water with fewer crowds, June, September or October would be the better bet.

Frequently Asked Questions

What time does the sun set in Ios in May?

Through May, sunset in Ios moves from around 8:05 pm to around 8:30 pm in Greek local time, as the evenings get longer. In mid-May, expect it at around 8:20 pm. Chora, especially near the church of Panagia Gremiotissa, has wide views to the west.

Is it hot in Ios in May?

Not usually. May is warm rather than hot, with long, sunny days that are comfortable for sightseeing and walking. Rain becomes rare, but evenings can still feel cool, especially when the wind picks up, so bring a light layer. The real summer heat usually arrives later.

Can I visit Chora on Ios in May?

Yes, and May is a lovely time to do it. Chora on Ios is lively without the peak-season crowds, and it's comfortable to walk around during the day. Climb to the church of Panagia Gremiotissa for the views.

Do I need a car on Ios in May?

It helps. Bus timetables are lighter in May than in summer, so a car or scooter makes it easier to reach villages and beaches beyond the port and Chora.

Is May or June better for visiting Ios?

It depends on what you want. June is warmer, the sea is better for swimming and everything is open, but crowds and prices start to climb. May is quieter, greener and cheaper, with pleasant walking weather, though the sea is still cool for many swimmers.

Loving Ios?

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Ios Weather by Month

Sunshine, rain and sea temperatures for January, plus travel tips.

Weather, sea temperature and travel tips for February.

What to expect in March: weather, crowds and what's open.

Is April a good time to go? See the weather and what's open.

Temperatures, swimming and what's on in May.

Planning a trip in June? Here's the weather and what to know.

Sunshine, rain and sea temperatures for July, plus travel tips.

Weather, sea temperature and travel tips for August.

What to expect in September: weather, crowds and what's open.

Is October a good time to go? See the weather and what's open.

Temperatures, swimming and what's on in November.

Planning a trip in December? Here's the weather and what to know.

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