Sea Temperatures for 19,259 Locations
Today's sea temperature, the 10-year average, and a 30-day trend for 19,259 coastal locations, lakes, and rivers around the world. Search below, pick a pin on the map, or browse by country for June 2026.
World sea temperature map
The map below is updated daily. Marker colours show the latest available sea temperature readings.
Max 32.9°C | Min -1.8°C
Popular water temperatures
All 19,259 →- Okanagan Lake Canada
- Crummock Water United Kingdom
- Brockville Canada
- Miami Beach United States
- Marsa Alam Egypt
- Port Phillip Bay Australia
- Forty Foot Ireland
- Fig Tree Bay Cyprus
- Los Cristianos Spain
- Fort De Soto Park United States
- Lake Como Italy
- Detroit River United States
- Ain El Turk Algeria
- Algiers Algeria
- Annaba Algeria
- Bab Ezzouar Algeria
- Bejaia Algeria
- Beni Saf Algeria
- Bordj El Kiffan Algeria
- Boumerdas Algeria
- Boumerdes Algeria
- Dellys Algeria
- Jijel Algeria
- Mers El Kebir Algeria
Browse by country
19,259 locations totalSea temperature rankings
Hottest, coldest, by region, by monthListicle pages built from the same ten years of daily readings as every location page. Pick a hub. Each one cross-links to the month variants, country drilldowns, and US state pages from inside.
Warmest oceans
The five oceans ranked by annual mean.
Coldest oceans
Polar coasts and the cold mid-table.
Warmest seas in the world
Persian Gulf, Red Sea, Mediterranean, and more.
Warmest beaches
Beaches, bays, and coves ranked by region.
Where to swim in June
Comfortable-swim coasts worldwide, this month.
Warmest sea in the UK
Cornwall, Devon, Channel Islands ranking.
Warmest sea by region
Coldest sea by region
Water Temperatures for Every Coast
Sea Temperatures covers 19,259 coastal locations, lakes, and rivers around the world. Whether you swim, surf, sail, fish, or plan trips to the coast, the same daily numbers shape your day.
Every location page shows today's reading, yesterday, the 10-year average, a 30-day chart and table, and the typical shape of every month across the year.