Ermioni and Poros sit close together on the Saronic Gulf, and the short hop between them is one of the more relaxed ferry connections in Greek waters. Ermioni's harbour is a working fishing port on the Argolic coast, small enough that you can watch the boat come in from a taverna table on the quay. Poros feels almost urban by comparison for an island of its size: the ferry ties up a short walk from the main square, and the strait separating the island from the Peloponnesian mainland is narrow enough to see clearly across. Hellenic Seaways runs the route, and sailings continue well beyond the summer peak rather than stopping when the crowds thin out -- check the schedule box above for the latest confirmed dates.
In high summer there can be a couple of sailings a day, enough to build in a swim or a long lunch before catching a later boat back. Outside the busiest weeks the service typically settles to a single daily departure, which is still enough to make this a genuine day-trip option rather than an occasional connection. The crossing itself is brief and runs through sheltered water, so it rarely suffers the exposure that can disrupt routes further out in the Aegean.
Useful Resources for Your Greek Island Trip
- Find accommodation in Greece – hotels, apartments and villas on Booking.com
- Book tours and activities in Greece via Viator
- Find guided experiences and day trips via GetYourGuide
- Compare car hire prices in Greece via DiscoverCars