Heraklion weather

Our guide to the weather in Heraklion during May

22

Average high

6

UV Index

21mm

Monthly rainfall

20

Sea temperature

We've looked at the most up-to-date weather data for Heraklion, 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 Heraklion weather in May.

How warm is it in Heraklion during May?

The temperature reaches around 22℃ during the daytime in May, falling away to 17℃ at night. 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 Heraklion during May?

On average, in May you'll see rain on just one day in the month. In other words, you shouldn't see any of the wet stuff. There's a small chance that you'll catch a thunderstorm during your trip.

Is it windy in Heraklion during May?

You're unlikely to experience any strong winds. Expect a light breeze that picks up slightly at times in May. With moderate humidity and mild air temperatures, the breeze will have a slight cooling effect.

How warm is the sea in Heraklion during May?

The water around Heraklion 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.

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Heraklion Blog posts

From the UK's most popular travel bloggers

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The best things to do in Heraklion, Crete

3rd November 2023 by The Travel Bunny

Welcome to Heraklion, Crete, where ancient palaces and hidden caves await your exploration, and the taste of authentic Cretan cuisine will leave you craving for more. Indulge in wine tasting, embark on scenic boat trips, and bask under the glorious blue skies. Join us as we uncover the wonders of this captivating destination in our latest blog post....

Weather in Heraklion

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

14.3

Heraklion weather in

January
14.9

Heraklion weather in

February
15.9

Heraklion weather in

March
18.6

Heraklion weather in

April
22.2

Heraklion weather in

May
25.6

Heraklion weather in

June
27.8

Heraklion weather in

July
28.3

Heraklion weather in

August
26.5

Heraklion weather in

September
22.9

Heraklion weather in

October
19.6

Heraklion weather in

November
16.2

Heraklion weather in

December