Santorini — Water Temperature Today and Throughout the Year
Discover water temperatures in Santorini (Greece), with real-time data and annual trends. Find all locations in the region and check the water temperature in them. We find every place where you can swim and show you the water temperature there today and throughout the year.
Sea Water Temperature Along the Coast
Chart of Average Temperature Changes Over the Last 60 Days
Places with the Warmest Sea Water Today
The Most Popular Seaside Places
Coastal Seas and Oceans
Water Temperature and Swimming Overview
Regions and Map
Water Temperature Trends
Santorini, located in the southern Aegean Sea, offers a stunning coastline with waters that are as inviting as its breathtaking views. During the summer months (June to September), sea temperatures typically range between 24–26°C (75–79°F), creating perfect conditions for swimming and relaxing by the famous volcanic beaches like Kamari, Perissa, and Red Beach. The warm waters, combined with the island's unique black and red sands, make it a memorable experience for visitors.
In spring (April to May) and autumn (October to November), the sea remains moderately warm, averaging around 20–23°C (68–73°F). These seasons are ideal for travelers seeking a quieter atmosphere, as the beaches are less crowded, and the waters are still comfortable for swimming or snorkeling.
During the winter months (December to March), the sea cools to around 16–18°C (61–64°F). While not as warm, these temperatures are still suitable for adventurous swimmers or those who enjoy the serene beauty of Santorini’s coastline in the off-season. The volcanic nature of the island also means some areas have thermal springs, offering a unique opportunity for warm-water bathing year-round.