France
France offers a diverse range of sea water temperatures. At the moment, you can observe the warmest water temperatures along the shores of the cities Bastia (61.4°F), Roquebrune-Cap-Martin (61.2°F) and Marseille (60.6°F). In contrast, the city of Boulogne-sur-Mer has the coldest water temperature in France, averaging around 50.8°F. This means the difference in water temperature between the warmest and coldest coastal cities is 10.5°F.
Destinations in France