Dia is the low, rocky island that lies on the horizon north of Heraklion, and for most visitors it is the easiest way to get out onto the Aegean without a long ferry ride. Uninhabited apart from a few wild goats, the island is protected as a refuge for the kri-kri, the Cretan wild goat, and its coves with clear turquoise water are among the nicest swimming spots near the capital. Its name appears in ancient sources, and the island has been a landmark for sailors since the Minoans. Today, the attraction is simple: a day under sail, a swim in water that is cleaner and calmer than many mainland beaches, and a view back to the coast of Crete with the great bulk of Mount Juktas and the Psiloritis range behind the city. Catamarans from the old port of Heraklion are the usual way to do it, and small-group boats offer a more relaxed pace than the big excursion vessels, with time to swim, snorkel and relax on deck.
How it works
You board a catamaran at the Heraklion marina or an agreed harbour pick-up, sail for around an hour to Dia and anchor in a sheltered cove. The programme includes swim stops, time on deck and a meal prepared on board, with drinks included on many departures.
The day tour options differ in group size and in what is included, so check the departure time, meeting point, number of guests and the meal and drinks details when you book. The season runs from late spring to early autumn, and sailing depends on weather and sea conditions.
What to expect
You spend most of the day on and around the boat, with the crew helping you in and out of the water and often offering snorkel gear, stand-up paddle boards or a simple slide. The island itself is usually seen from the water because landing is limited, but the colours of the sea around it are the real reward.
On the sail out there is space to sit in the shade under the awning or sunbathe on the nets at the front. Bring a swimsuit, towel, sun cream, a hat and sunglasses, and take a light layer for the return trip when the breeze can feel cool.
Making the most of it
Morning departures tend to have calmer seas and cooler air, while sunset sailings are popular with couples and give you a golden-hour view of the Heraklion coastline. If you are prone to seasickness, choose a catamaran rather than a smaller boat and take a tablet before you board. Children usually enjoy the swimming and the nets, though parents should check the safety arrangements and life jackets for small ones. Pair the cruise with an evening in the old harbour area, where the Koules Fortress is lit after dark.
Good to know
The coast of Heraklion can be windy in July and August, and the sea state changes quickly, so be flexible with dates and book early in the stay so you have a spare day if a sailing is moved. Wear a hat that will not blow away, reef-safe sun cream if you can, and shoes with a non-slip sole for the deck.
Keep valuables to a minimum, since space on board is limited, and ask the crew where to leave your bags. The marina has cafes where you can wait before departure, and the walk to the old town takes only a few minutes.
What to expect
The experience
A small-group catamaran sail from Heraklion to Dia Island with swim stops, a meal on board and time to relax on deck.
Best time
June to September when the sea is warm, with morning departures for calmer water and sunset departures for the light.
How long
Allow about five hours from boarding to return, depending on the departure chosen.
Tips
Bring swimwear, a towel, sun protection and a light layer, and check the weather the day before because sailings depend on the sea.
Quick picks
- Best for
- Beach lovers and couples who want a relaxed day on the water close to Heraklion.
- Families
- Swimming and snorkelling suit confident swimmers, and the crew can help children in and out of the water, but check the minimum age and the life jacket sizes.
- Couples
- A sunset sailing combines a swim, a meal and a golden view of the coast.
- Pair with
- An evening walk to Koules Fortress or a Cretan night with live music.
- Time needed
- Half a day or a full afternoon.
Good questions
Where does the Dia cruise leave from?+
Most catamaran departures leave from the harbour in Heraklion or a nearby marina, and some include hotel pick-up from the north coast resorts. Check the meeting point when you book.
Can you land on Dia Island?+
Landing is limited because the island is a protected area for the Cretan wild goat, so the cruises generally anchor in a cove and offer swimming from the boat. Your crew will explain what is allowed.
Is food included?+
Most small-group catamaran trips include a meal on board and some drinks, but the menu and what counts as included differ by operator. Check the details when you book and tell the crew about allergies in advance.
What if the weather is bad?+
Sailings depend on the wind and sea state, and operators can change the route or cancel on rough days. Check the cancellation terms when you book.
Is this cruise good for non-swimmers?+
Yes, the sail itself, the sun deck and the scenery can be enjoyed without swimming, and life jackets are available. Tell the crew if you or your children are not confident in the water.
