Warmest lakes to swim today

The warmest lakes to swim right now – ranked live by water temperature.

Updated on July 17, 2026

1Grabensee36.9 °C 2Grabensee, Perwang, Berndorf bei Salzburg36.9 °C 3Lake Marion near Pineville, South Carolina33.9 °C 4Lake Mattamuskeet W of Nc HWY 94 near Fairfield, North Carolina33.7 °C 5Hévízi-tó, Hévíz tóközép33.6 °C 6Lake Mattamuskeet E of Nc HWY 94 near Fairfield, North Carolina33.2 °C 7Falls Lake above Dam near Falls, North Carolina32.7 °C 8Lake Peachtree Headwater at Peachtree City, Georgia32.3 °C 9Thurmond Lake near Plum Branch, South Carolina30.5 °C 10Russell Lake above Calhoun Falls, South Carolina30.4 °C 11Lieferinger Badesee, Salzburg, Salzburg29.9 °C 12Lake Hou at Jack's Ditch (Site 2) near Houston, Texas29.7 °C 13Gsl Farmington Bay Outflow at Causeway Bridge29.6 °C 14Lynchburg Reservoir near Cwa Canal Inflow near Baytown, Texas29.4 °C 15Lake Houston S Union Pacific Rr Bridge near Houston, Texas29.2 °C 16Lake Lugano, Melide28.9 °C 17Lake Erie, Port Clinton Buoy28.7 °C 18Lake Houston at FM 1960 near Huffman, Texas28.7 °C 19Badesee Großsteinbach, Großsteinbach28.6 °C 20Lake Lugano, Lugano, Lido28.4 °C 21Klaffer Badesee, Klaffer am Hochficht28.4 °C 22Turnersee, St. Primus, Obersammelsdorf, Sankt Kanzian am Klopeiner See28.1 °C 23Hubbard Creek Reservoir near Breckenridge, Texas28.0 °C 24Silbersee, Villach, Villach27.9 °C 25Rauschelesee, Nord, Keutschach am See27.9 °C 26Badesee Steyregg, Steyregg27.9 °C 27Greifenburger Badesee, Nordwest, Greifenburg27.8 °C 28Pleschingersee, Steyregg, Steyregg27.8 °C 29Wörthersee, Pörtschach27.7 °C 30Rauschele See, Bad27.7 °C 31Wörthersee, Klagenfurt, Klagenfurt27.7 °C 32Wörthersee, Maiernigg, Klagenfurt27.7 °C 33Wörthersee, Reifnitz, Maria Wörth27.7 °C 34Lake Erie, Toledo Water Intake Buoy, Oregon, OH27.7 °C 35Weisslahn, Ost, Terfens27.6 °C 36Lake Erie, Maumee Bay Buoy27.6 °C 37Klopeiner See, Unterburg, Unterburg, Sankt Kanzian am Klopeiner See27.5 °C 38Klopeiner See, St. Kanzian, Sankt Kanzian am Klopeiner See27.5 °C 39Zeuthener See, Schmckwitz US27.5 °C 40Maltschacher See, Briefelsdorf27.4 °C 41Faaker See, Drobollach, Drobollach, Villach27.3 °C 42Feldkirchen-Badesee (N-O), Feldkirchen an der Donau27.3 °C 43Badesee Rossau, Ost, Innsbruck27.3 °C 44Lake Monona at Madison, Wisconsin27.3 °C 45Bürmooser See, Bürmoos27.1 °C 46Rheinauen, Hohenems, Hohenems27.1 °C 47Alter Rhein, Lustenau, Lustenau27.1 °C 48Lake Constance, FKK Hard, Hard27.1 °C 49Ossiacher See, Ossiach27.0 °C 50Gösselsdorfer See, Gösselsdorf27.0 °C 51Ossiacher See, Ossiach, Ossiach27.0 °C 52Ossiacher See, Bodensdorf, Steindorf am Ossiacher See27.0 °C 53Bruggerloch, Höchst, Höchst27.0 °C 54Lake Erie, Erie Islands Buoy27.0 °C 55Wörthersee, Pörtschach am Wörthersee26.9 °C 56Wörthersee, Pörtschach, Pörtschach am Wörthersee26.9 °C 57Wörthersee, Saag, Techelsberg am Wörthersee26.9 °C 58Wörthersee, Velden, Velden am Wörthersee26.9 °C 59Ritzensee, Saalfelden, Saalfelden am Steinernen Meer26.9 °C 60Badesee Rossau, West, Innsbruck26.9 °C