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About Katharos beach
Katharos beach is a beach on Santorini, facing north-west. Land shelters it from winds from the north-east, the east, and the south-east, so those winds leave the water flat here. Winds from the north, the west, and the north-west arrive over open sea and raise waves when they are strong. It looks west over open sea, so the sun sets into the water. A road leads to the beach and there is parking nearby. Within 300 m there are 1 bar or café. The sea is warmest in August, at about 24 °C. It is above 22 °C from June to October.
Written from map data (OpenStreetMap contributors), our own measurement of the open sea around the beach and NOAA sea temperatures (1991-2020 averages).
When is it busy?
Typical visitor levels around Santorini, month by month.
Santorini is busiest in August. In May and October there are about half as many visitors, or fewer. For a flat sea and fewer people, the best months are June and October.
Visitor levels are nights spent in tourist accommodation in the South Aegean region (Eurostat, average of 2023–2025), compared with its busiest month. They show when the area is busy, not how many people are on a given beach.