Pori beach is found in the north east of
Santorini, it's about 15km from the islands capital
Fira and that's usually 25-30 minutes drive.
The beach stretches out for over a kilometre from the cliffs at
Kolumbo beach in the north all the way down to Pori port to the south. It's largely deserted, pebble underfoot, backed by impressive cliffs and generally pretty rugged. It wont be a great choice for the average tourist but if you like to get away from the crowds then it could be for you.
At the southern end next to the port there's a couple of smaller beaches that are slightly more sandy, they're equally rustic and normally pretty quiet too so whichever you choose you'll be able to relax in peace.
The small fishing harbour at the southern end has a taverna just above that's a lovely place to relax and watch the Greeks going about their business and to get snacks and drinks if you're staying at the southern end. If you're further north then there's no facilities so bring what you need with you.
Getting to Pori is straight forward with a hire car, moped, quad or taxi. There's a small amount of parking close to the harbour as well as spaces at the side of the roads where they meet the beach.