Kos weather

Our guide to the weather in Kos during May

22

Average high

6

UV Index

28mm

Monthly rainfall

20

Sea temperature

Kos is a beautiful Greek island with plenty of sun and stunning scenery, making it an ideal destination for a relaxing holiday. We've looked at the most up-to-date weather data for Kos, covering the last 12 years up to 2024, plus we've asked our team of travel bloggers for their first-hand experiences in order to answer the most frequently asked questions about Kos weather in May.

How warm is it in Kos during May?

The temperature is extremely stable in May with average highs of 22℃ and lows just 4℃ lower at 18℃. The UV index will be high at this time of year, so protection against skin and eye damage is needed. Try to limit exposure between 10am and 4pm. Apply broad spectrum SPF 30+ sunscreen every few hours, even if it's cloudy, or more frequently after sweating or swimming, and wear UV-blocking sunglasses too, and bear in mind that bright surfaces, such as sand and water increase UV exposure.

Does it rain in Kos during May?

On average, there will be 2 rainy days during the month, amounting to 28.3mm in total. That's much drier than we see in England during August, and therefore not something to be concerned about. There's a small chance that you'll catch a thunderstorm during your trip.

Is it windy in Kos during May?

You're unlikely to experience any strong winds. Expect a gentle breeze that increases to moderate at times during May. With moderate humidity and mild air temperatures, the breeze will have a slight cooling effect.

How warm is the sea in Kos during May?

The water around Kos is around 20℃ during May. It will feel a little on the cool when first entering, but you'll warm up quickly. Most kids will have no problem with this temperature, but those who feel the cold are unlikely to want to swim.

Holidays in Kos

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Kos Blog posts

From the UK's most popular travel bloggers

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Discovering Greece by Yacht: Four Islands to Visit

27th October 2023 by Conversant Traveller

Greece, with its impressive collection of approximately 6,000 islands, is an ideal destination for those looking to embark on a boat exploration. Its vast territory spans across the Aegean and Mediterranean seas, offering a plethora of options for intrepid travellers. In this article, we will delve into four captivating islands that are well worth a visit during your yacht adventure in Greece....

Weather in Kos

Our month-by-month guide to the weather and climate in Kos

13.7

Kos weather in

January
14.6

Kos weather in

February
15.5

Kos weather in

March
18.2

Kos weather in

April
21.9

Kos weather in

May
25.6

Kos weather in

June
28.5

Kos weather in

July
28.9

Kos weather in

August
26.6

Kos weather in

September
22.9

Kos weather in

October
19.4

Kos weather in

November
15.7

Kos weather in

December