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Brittany

Brittany Sea and Water Temperature

This page provides detailed information about the water temperature in Brittany, France. All cities and resorts on the coast, also in lakes and along the rivers. 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.

Current Sea Temperature

7.6°C

minimal

8.8°C

average

10.2°C

maximum

Graph of Sea Temperature Changes in Brittany Over the Last 60 Days

Water temperature in the Brittany by month

Month	Minimum	Maximum
January	6°C	13°C
February	7°C	12°C
March	7°C	13°C
April	8°C	15°C
May	9°C	17°C
June	11°C	20°C
July	13°C	21°C
August	14°C	21°C
September	13°C	21°C
October	12°C	20°C
November	11°C	18°C
December	9°C	15°C

The Warmest Places on the Seaside in Brittany Today

10°C

Locquirec

10°C

Perros-Guirec

10°C

Plouescat

10°C

Locquémeau

10°C

Roscoff

10°C

Sibiril

List of All Coastal Cities in Brittany

Seas and Oceans that Border Brittany

Current Water Temperature in Lakes and Rivers

4.7°C

minimal

8.0°C

average

8.9°C

maximum

The Warmest Places on Lakes and Rivers in Brittany Today

9°C

Plougastel-Daoulas

9°C

Élorn

River

9°C

Landerneau

9°C

Réservoir Saint-Michel

Lake

9°C

Quimper

9°C

Odet

River

List of Lakes in Brittany

List of Rivers in Brittany

List of Cities and Places in Brittany

France: List of Regions

Water Temperature in Brittany: General Trends and Swimming Opportunities

Original name of the region: Bretagne

Brittany, located in northwest France, is surrounded by the Atlantic Ocean, giving it a rich maritime character and a rugged coastline. The seawater temperature along its coasts varies depending on the season. In summer, coastal waters generally warm up to 59°F to 66°F (15°C to 19°C), offering refreshing yet tolerable conditions for swimming, particularly in sheltered bays and beaches such as those in Saint-Malo or Quiberon. In winter, the sea cools down significantly, with average temperatures ranging from 50°F to 55°F (10°C to 13°C), making it less inviting for swimmers but still attracting surfers and other enthusiasts of cold-water sports.

In addition to its coastal waters, Brittany is dotted with lakes and rivers, including the famous Vilaine and Blavet rivers. These freshwater bodies tend to warm up more than the ocean in summer, often reaching temperatures of 68°F to 75°F (20°C to 24°C). Such conditions make them ideal for activities like kayaking, paddleboarding, and even swimming. However, in cooler months, these waters can drop to 41°F to 46°F (5°C to 8°C), creating a stark contrast to the livelier summer season.

The combination of Brittany’s cooler ocean waters and warmer inland lakes and rivers ensures a diverse aquatic experience for visitors. Whether it’s exploring the dramatic tides of the coastline or enjoying the calmer inland waters, the region offers a variety of activities tailored to both relaxation and adventure.

Geographical Location of Brittany

Frequently Asked Questions About Brittany and its Water Temperatures

What is the current sea temperature on the coast of Brittany in France?

The sea temperature today on the coast of Brittany ranges from 46°F (7.6°C) in Hirel to 50°F (10.2°C) in Locquirec.

What is the current water temperature in the lakes and rivers of Brittany in France?

The water temperature today in the lakes and rivers of Brittany ranges from 40°F (4.7°C) in Allier to 48°F (8.9°C) in Plougastel-Daoulas.

When does the sea in Brittany in France reach a comfortable swimming temperature?

The sea temperature in Brittany (France) never warms up to 70°F (21°C). Its maximum value is 70°F (21°C) in July. It should be noted that the mentioned values apply to the warmest point of the region. In other areas of Brittany, the values may vary.

What are the most popular seaside resorts in Brittany?

The most popular places on the coast of Brittany (France), based on our visitors' interest in the water temperature, are cities Saint-Malo, Quiberon, Brest, Binic, and Lorient.

Which seas and oceans does the Brittany have access to?

Brittany (France) has access to the seas: Bay of Biscay, and Celtic Sea.

Can you swim in the lakes and/or rivers in Brittany in France?

Yes, you can swim in some lakes and rivers in Brittany, France, though it's advisable to choose officially designated swimming areas to ensure safety and water quality. It's also recommended to heed any local warnings or restrictions.

What are the best and most popular lakes for swimming in Brittany in France?

The Lac de Guerlédan and Lake Au Duc are among the most popular and finest swimming lakes in Brittany, France. These provide excellent water quality and recreational facilities for visitors.