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Carnac

Water Temperature in the Bay of Biscay in Carnac, France: Current, Historical Data and Forecast

On this page, you will find comprehensive information about the sea temperature in Carnac in France, including current readings, historical data and trends, monthly averages, as well as weather forecasts and upcoming temperature predictions. We find every spot where you can swim and tell you what the water temperature is there today and throughout the year.

Current Water Temperature in Carnac

15.5°C

TODAY

15.4°C

YESTERDAY

15.0°C

A WEEK AGO

All water temperature data is now available in our official mobile apps — for iOS and Android.

Analysis, Historical Data, and Forecast of Water Temperature

Today sea water temperature in the Bay of Biscay in Carnac is 15.5°C. The water is comfortable for most people, making it an ideal range for water sports enthusiasts. The temperature does not cause significant discomfort, and swimming will be pleasant for the majority. However, it's important to remember that prolonged exposure to the water can still lead to cooling, so it's essential to monitor the time spent in the water, especially for children or elderly people.

It is important to note that these swimming tips and recommendations apply only in good weather. When the air temperature is below 68°F (20°C), and sometimes even below 77°F (25°C), swimming can be unpleasant even with relatively high water temperatures.

Water Temperature Chart for Bay of Biscay in Carnac Over the Last 30 Days

The water temperature in Carnac today is lower than both a week ago and a month ago. Today's sea temperature is generally in line with historical values for this day.

According to our forecast, the sea temperature in Carnac will remain nearly unchanged in the coming days, its value will be 15.7°C.

Actual nearshore water temperatures may fluctuate by several degrees from the reported values, especially following heavy rainfall or extended periods of strong winds. Certain wind patterns can cause colder, deeper waters to rise and replace the sun-warmed surface water, leading to noticeable variations.

Our forecast is based on a proprietary mathematical model that considers real-time water temperature changes, historical trends, key weather patterns, wind strength and direction, and air temperature specific to each region. Additionally, we incorporate data from other resorts across France to enhance accuracy.

Water temperature data for Carnac and nearby towns and resorts is gathered from various sources, including buoys and satellite sea and ocean surface maps provided by the NOAA agency. We also incorporate data from local authorities in each specific location worldwide to ensure more accurate temperature readings.

Table of Daily Sea Temperature Data

Date	Current	Average	Forecast
May 28	15.0°C	15.0°C
May 29	14.9°C	15.0°C
May 30	14.5°C	15.5°C
May 31	15.0°C	15.8°C
Jun 1	15.0°C	15.0°C
Jun 2	14.8°C	15.3°C
Jun 3	15.4°C	15.3°C
Jun 4	15.1°C	15.3°C
Jun 5		16.0°C	15.6°C
Jun 6		15.5°C	15.6°C
Jun 7		15.8°C	15.6°C
Jun 8		15.8°C	15.6°C
Jun 9		16.0°C	15.6°C
Jun 10		16.3°C	15.7°C
Jun 11		16.0°C	15.7°C
Jun 12		16.0°C	15.7°C

* Current - Actual water temperature value

** Average - Average water temperature on this day in recent years

*** Forecast - Our water temperature forecast

Sea Temperature in Carnac Throughout the Year

Throughout the year, the sea temperature in Carnac exceeds 77°F (25°C) for 0 days, exceeds 72°F (22°C) for 0 days, and exceeds 64°F (18°C) for 42 days.

Below is the annual chart of sea temperature changes in the Bay of Biscay in Carnac.

January

Minimum	Average	Maximum
8°C	10.5°C	13°C

February

Minimum	Average	Maximum
8°C	9.5°C	11°C

March

Minimum	Average	Maximum
8°C	10.5°C	13°C

April

Minimum	Average	Maximum
9°C	11.5°C	14°C

May

Minimum	Average	Maximum
12°C	14.5°C	17°C

June

Minimum	Average	Maximum
13°C	16.5°C	20°C

July

Minimum	Average	Maximum
14°C	17°C	20°C

August

Minimum	Average	Maximum
15°C	17.5°C	20°C

September

Minimum	Average	Maximum
15°C	17.5°C	20°C

October

Minimum	Average	Maximum
13°C	16°C	19°C

November

Minimum	Average	Maximum
12°C	14.5°C	17°C

December

Minimum	Average	Maximum
9°C	11.5°C	14°C

Monthly Water Temperature Histogram for Bay of Biscay in Carnac

You can explore detailed data on how the water temperature in Carnac varies each month:

What Beaches Are There In and Around Carnac?

Grand Plage

Grand Plage is a 5-stars sandy beach, located in a 2 km (1 miles) radius of Carnac. It has been awarded the prestigious Blue Flag, ensuring high environmental and quality standards. There are lifeguards on the beach. There is parking. There are restrooms. There are cafés. The calm waters make this beach ideal for swimming, providing a safe and enjoyable experience for all visitors.

Plage Des Sables Blancs

Plage Des Sables Blancs is a 2-stars sandy beach, located in a 4 km (2 miles) radius of Carnac. It has been awarded the prestigious Blue Flag, ensuring high environmental and quality standards. There are cafés.

Plage De Kervillen

Plage De Kervillen is a 5-stars sandy beach, located in a 4 km (2 miles) radius of Carnac. There are lifeguards on the beach. There is parking. There are restrooms. There are cafés. The calm waters make this beach ideal for swimming, providing a safe and enjoyable experience for all visitors.

Sainte Barbe Beach

Sainte Barbe Beach is a 5-stars sandy beach, located in a 5 km (3 miles) radius of Carnac. There are lifeguards on the beach. There is parking. There are restrooms. There are cafés. The calm waters make this beach ideal for swimming, providing a safe and enjoyable experience for all visitors.

Plage De Kerhillio

Plage De Kerhillio is a 5-stars sandy beach, located in a 8 km (5 miles) radius of Carnac. It has been awarded the prestigious Blue Flag, ensuring high environmental and quality standards. There are lifeguards on the beach. There is parking. There are restrooms. Snorkeling is possible. It is suitable for surfing. The calm waters make this beach ideal for swimming, providing a safe and enjoyable experience for all visitors.

Plage De Port Blanc

Plage De Port Blanc is a 2-stars sandy beach, located in a 9 km (6 miles) radius of Carnac. There is parking. It is suitable for surfing.

Er Long Beach

Er Long Beach is a 1-stars sandy beach, located in a 9 km (6 miles) radius of Carnac.

Carnac Weather

JUNE 5

16°C / 16°C

light rain

humidity: 76% | wind: 9 km/h

JUNE 6

15°C / 16°C

broken clouds: 51-84%

humidity: 80% | wind: 11 km/h

JUNE 7

14°C / 16°C

clear sky

humidity: 67% | wind: 9 km/h

JUNE 8

13°C / 15°C

clear sky

humidity: 70% | wind: 7 km/h

Sea Temperature in the Bay of Biscay in Carnac: General Trends and Swimming Opportunities

Original name

Carnac

The Local Time

19:37

Time Zone

UTC+2

Sunrise

06:18

Sunset

22:03

Length of the day

15 h 45 m

Brittany, France has a temperate maritime climate characterized by mild summers and cool winters. The coastal region often experiences abundant rainfall throughout the year, coupled with ample sunshine, and is frequently subjected to the cooling sea breezes.

Carnac is located in Europe in the Northern Hemisphere at a latitude of 48 degrees, along the shores of the Bay of Biscay. Carnac lies within the Brittany in France.

The average annual daytime air temperature in Carnac is 16°C (61°F), with the average nighttime temperature being 9°C (48°F). The highest average daily temperature occurs in August, reaching 22°C (72°F), while the lowest is in January at 10°C (49°F). As for nighttime temperatures, the minimum average temperature of 5°C (40°F) is recorded in February, and the maximum is in August, reaching 14°C (58°F).

According to historical data, Carnac experiences 136 rainy days per year, which accounts for 37 percent of all days in the year. On average, there are 11 rainy days each month. The wettest month is November, with 15 rainy days and 106 mm (4.2 inches) of precipitation, while the driest month is July, which typically has 8 rainy days and only 42 mm (1.6 inches) of precipitation.

The average annual water temperature in Bay of Biscay in Carnac is 14°C (57°F). In January, the water reaches its lowest point of the year at 8°C (46°F), while in June, it peaks at 20°C (68°F). In Carnac, the water temperature in the Bay of Biscay never consistently reaches a comfortable level for swimming in any month.

Geographical Location of Carnac

Nearby Cities

Frequently Asked Questions About Carnac and its Water Temperatures

What is the current sea temperature in Carnac?

The water temperature today in the Bay of Biscay in Carnac is 60°F (15.5°C).

In which months is the water temperature in Carnac comfortable for swimming?

It cannot be guaranteed that the water temperature in Carnac will be comfortable for swimming in any month of the year.

What is the water temperature in Carnac during the winter?

The water temperature in the Bay of Biscay in Carnac during the winter ranges from 8°C to 14°C (46°F to 57°F).

What is the water temperature in Carnac during the spring?

The water temperature in the Bay of Biscay in Carnac during the spring ranges from 8°C to 17°C (46°F to 63°F).

What is the water temperature in Carnac during the summer?

The water temperature in the Bay of Biscay in Carnac during the summer ranges from 13°C to 20°C (55°F to 68°F).

What is the water temperature in Carnac during the fall?

The water temperature in the Bay of Biscay in Carnac during the fall ranges from 12°C to 20°C (54°F to 68°F).

Is it possible to swim in the sea in Carnac at any time of the year?

In Carnac, the Bay of Biscay is quite cold, and swimming is almost impossible as the water temperature never reaches 21°C (70°F).

Is Carnac a popular tourist destination for beach vacations?

Carnac has a moderate level of popularity for beach vacations; while it does receive some visitors, it is not among the top seaside destinations, as other locations may offer more favorable conditions.

What sea temperatures can I expect in Carnac in the next month?

In July, the water temperature in the Bay of Biscay in Carnac will range between 57°F (14°C) and 68°F (20°C)