Crete has one of the warmest, sunniest climates in Europe, which is why Heraklion International Airport “Nikos Kazantzakis” (HER) is so busy in summer. Knowing what the weather is doing helps you pack, choose when to visit, and plan around the peak-season heat. Here is what to expect through the year.
What is the weather like in Heraklion?
Heraklion has a Mediterranean climate: long, hot, dry summers and mild, wetter winters. Summer days are reliably sunny with little rain, while the coolest, greenest months are in winter. The sea stays warm well into autumn, which extends the swimming season.
Summer (June to September)
This is the peak. Daytime highs typically sit around the low-to-mid 30s Celsius, sometimes higher in heatwaves, with warm evenings and a lot of sunshine. A northerly breeze often takes the edge off on the coast. It is hot, so pack light clothing, sun protection and plenty of water — and expect the airport to be at its busiest.
Spring and autumn
Spring (April–May) and autumn (October) are mild and pleasant — comfortable temperatures, fewer crowds, and the sea still warm in early autumn. These shoulder seasons are a good compromise if you want warmth without the peak-summer heat and prices.
Winter (November to March)
Winters are mild by European standards, with highs commonly in the low-to-mid teens Celsius, but this is the wettest part of the year and the mountains inland can see snow. Many seasonal businesses and flight routes wind down, so the airport is far quieter.
When is the best time to visit?
For beaches and reliable heat, June to September; for sightseeing in comfort with thinner crowds, May, early June, September and October. Winter suits a quiet, budget city break rather than a beach holiday.
What to pack
- Summer: light clothes, hat, sunglasses, high-factor sun cream, a refillable water bottle
- Spring/autumn: layers and a light jacket for cooler evenings
- Winter: a warm layer and a rain jacket
Does the weather affect flights?
Summer weather rarely disrupts flights, though strong seasonal winds can occasionally affect schedules. The bigger summer factor is volume, not weather — allow extra time at peak periods (see the timing guide) and check the live flight board before you travel.
Frequently asked questions
How hot does Heraklion get in summer?
Daytime highs are typically around the low-to-mid 30s Celsius, occasionally higher.
When is the best time to visit Crete?
June–September for the beach; May, September and October for warm weather with fewer crowds.
What is winter like?
Mild but the wettest season, with highs in the low-to-mid teens; much quieter.
Does weather delay flights at HER?
Rarely — summer disruption is usually about passenger volume, not weather.