Scotland — Water Temperature Today and Throughout the Year

Sea Water Temperature Along the Coast

Places with the Warmest Sea Water Today

The Most Popular Seaside Places

Coastal Seas and Oceans

Water Temperature in Lakes and Rivers

Popular Lakes

Popular Rivers

Popular Places

Water Temperature and Swimming Overview

Water Temperature Trends

The sea temperature along Scotland’s coastline is generally cold year-round due to its northern latitude and exposure to the North Atlantic. In the summer months, from June to September, water temperatures typically range between 10–15°C (50–59°F), with the warmest conditions found in more sheltered areas, such as the east coast near Edinburgh and the Moray Firth. The west coast, including locations like Oban and the Hebrides, can be slightly milder due to the influence of the North Atlantic Drift, but the North Sea coastline remains particularly chilly, often staying below 13°C (55°F) even in mid-summer. During winter, from December to March, the sea becomes significantly colder, with temperatures dropping to 5–9°C (41–48°F). The coldest waters are usually found in February and early March, especially along the northern and northeastern coasts. Despite these low temperatures, Scotland has a strong tradition of cold-water swimming, with many people braving the icy waters year-round, particularly in locations like Loch Lomond, the Firth of Forth, and various coastal bays. Wetsuits are commonly used outside of summer, but experienced swimmers often take part in wild swimming even in the harshest winter conditions.