Weather in Kos in May
Expect pleasantly warm, almost completely dry weather in Kos in May, late spring. Daytime highs average around 24°C / 74°F, and nights drop to about 18°C / 64°F. Rain is rare, with only 1 wet day in an average May. In the water, expect around 19°C / 66°F, refreshing for some, but too cool for most. Spring winds can still be brisk, but the hills turn green and wildflowers appear everywhere. Kos is long and fairly flat, with sandy beaches along its coasts and a mountain ridge running along the south of the island. Days bring around 14 hours of daylight, 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 comfortable to be out all day, though the midday sun is still strong.
Swimming in Kos in May
At around 19°C / 67°F, the sea in Kos is swimmable in May if you don't mind a chill. The best time for swimming is July, August and September, with August usually the warmest. Paradise Beach and Tigaki are local favorites. Beach facilities are only partly open at this time of year. A short wetsuit helps if you feel the cold.
Crowds & Prices in Kos in May
Crowds in Kos are moderate in May, with plenty of space at the main sights and beaches. Hotel rates sit between the winter lows and the summer peak. Staying slightly outside the main town usually means better value and more space. Early mornings and late afternoons are the quietest times at popular sights. Booking a few weeks ahead is usually enough.
What's Open in Kos in May
Ferries to Kos from Piraeus run more often as the season gets going. The airport has direct flights from across Europe in the season, as well as flights from Athens. By May, almost everything has reopened for the season. Archaeological sites and museums are on their longer summer hours. Most sites close on Easter Sunday and 1 May. Boat trips and excursions run regularly, weather permitting.
Festivals & Holidays in Kos 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 Kos, these occasions are celebrated much as they are across the rest of Greece. Between the big dates, it's a good time to join in local life, from markets to name-day celebrations.
Is May a Good Time to Visit Kos?
May is a lovely time for Kos if you want warm, sunny weather without the summer crowds. Expect highs of around 24°C / 74°F, lows near 18°C / 64°F and rain on around 1 day. It's ideal for walking, sightseeing and cycling around Kos Town. Keen swimmers may find the sea too cool, as it warms up properly later in the summer. If beach time matters most, aim for June, September, October or November instead.
Frequently Asked Questions
What time does the sun set in Kos in May?
Sunset in Kos is at around 8:00 pm at the start of May, around 8:10 pm in mid-May and around 8:25 pm by the end of the month, in Greek local time. The long evenings leave plenty of daylight after the heat of the day.
Is it hot in Kos 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 Kos Town in May?
Yes, and May is a lovely time to do it. Kos Town is lively without the peak-season crowds, and it's comfortable to walk around during the day. The ancient agora and the Castle of the Knights sit right in the center.
Do I need a car on Kos 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 Kos Town.
Is May or June better for visiting Kos?
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.
Kos Weather by Month
