Wales

Wales, United Kingdom © Mike Peel

Wales Sea Temperature

This page provides detailed information about the water temperature in Wales, United Kingdom. All countries, cities and resorts on the coast. The range of sea temperatures for today. We find every spot where you can swim and tell you what the water temperature is there today and throughout the year.

Water Temperature in Wales: General Trends and Swimming Opportunities

The sea temperature along the coast of Wales varies throughout the year, influenced by the Atlantic Ocean and the Irish Sea. During the summer months, from June to September, water temperatures typically range between 14–18°C (57–64°F), with the warmest conditions found in the southwest, around Pembrokeshire and the Gower Peninsula. The waters of Cardigan Bay and Anglesey tend to be slightly cooler but can still reach 16–17°C (61–63°F) during peak summer. Compared to the rest of the UK, Welsh coastal waters are relatively mild, making them popular for swimming and water sports during the warmer months.

In winter, from December to March, sea temperatures drop significantly, ranging between 7–11°C (45–52°F). The coldest waters are usually found in February and early March, when temperatures can dip as low as 7°C (45°F) along exposed coastal areas. Despite the chill, Wales has a strong sea swimming culture, with groups of open-water swimmers regularly braving the cold, particularly in sheltered bays and estuaries. Wetsuits are common outside of summer, but many experienced swimmers take on the challenge of cold-water swimming, drawn by the rugged beauty of the Welsh coastline.

Geographical Location of Wales

Frequently Asked Questions About Wales and its Water Temperatures