2027 Tide Tables for Carnac: Spring Tides and Shore Fishing
In Carnac, the sea recedes twice a day, revealing a vast foreshore of sand and rocks. In 2027, the year’s highest tide will occur on Thursday, September 2, with a tidal coefficient of 112. The beaches at Beaumer and Men-Dû are 500 m from Camping Les Druides: here are the dates to note, the times of the season’s high tides, and the rules for safe shore fishing.
⚠️ The times listed in this article are SHOM forecasts for the port of La Trinité-sur-Mer—the closest port to Carnac—in local time. Wind and atmospheric pressure may cause variations; always check the day’s tide schedule before heading out. The campground provides this information; it does not organize beachcombing trips or water sports activities.
🌊 Understanding the Tides in Carnac
On the Atlantic coast, there are two high tides and two low tides each day, about six hours apart. The interval between them varies depending on the positions of the Moon and the Sun.
A tidal range of more than 5.5 m during the highest tides: On September 2, 2027, the sea will rise to 5.88 m in La Trinité-sur-Mer and fall to 0.26 m.
About 2 m at neap tides: when the tidal range is small, the sea moves very little and most of the foreshore remains covered.
📏 The tidal coefficient
The coefficient, calculated by SHOM for the Port of Brest, measures the magnitude of the tide along the entire Atlantic coast. It ranges from 20 to 120.
Around 45: average neap tide; the sea recedes only slightly.
Around 95: moderate high tide; the foreshore is largely exposed.
Above 100: This is commonly referred to as a spring tide. The sea recedes very far, then rises quickly.
📅 Spring Tides in 2027: Dates to Note
☀️ During the camping season (April 17 – September 2, 2027)
Today's coefficient and time of the midday low tide in La Trinité-sur-Mer:
Wednesday, April 21: tidal coefficient 95, low tide at 12:06 p.m. (0.82 m).
Friday, May 7: tidal coefficient 92, low tide at 12:13 p.m. (0.88 m).
Sunday, June 6: tidal coefficient 91, low tide at 12:42 p.m. (0.93 m).
Tuesday, July 6: tidal coefficient 99, low tide at 1:21 p.m. (0.72 m).
Wednesday, August 4: tidal coefficient 108, low tide at 1:04 p.m. (0.45 m). A series of spring tides from August 3 to 6.
🏆 Thursday, September 2: tidal coefficient of 112, the highest tide of 2027, low tide at 12:42 p.m. (0.34 m). A series of spring tides from August 31 through September 4.
❄️ Off-season
Sunday, January 24: coefficient 107.
Monday, February 22: coefficient 110.
Tuesday, March 23: coefficient 106.
Thursday, September 30, and Friday, October 1: coefficient 108.
Friday, October 29, and Saturday, October 30: coefficient 97.
No coefficient exceeds 100 in November and December 2027.
🎣 Shore fishing: choosing the right time
The best time to go out combines a high tidal range with low tide in the middle of the day, such as August 4 or September 2, 2027. Head out onto the foreshore before low tide. As the SNSM reminds us, the signal to head back is low tide: the return trip always takes longer than the trip out.
📍 Where to fish near the campground
Beaumer Beach, Carnac: 500 m from the campground, popular with beachcombers for clams, cockles, and razor clams. → How to get there
Pointe Churchill, Carnac: an oyster bed monitored by the ARS Bretagne. → How to get there
Men-Dû Beach, La Trinité-sur-Mer: 500 m from the campground. The cockle bed there was classified as “fishing not recommended” in the September 2026 ARS bulletin. → Get there
Water quality varies from one test to the next: check the ARS Bretagne interactive map before each outing.
🐚 Minimum sizes and quantities in Morbihan
Maximum catch limits per fisherman per day:
Clam: 4 cm (Japanese clam: 3.5 cm), 150 per day (100 in the Gulf of Morbihan).
Shell: 2.7 cm, 300 per day.
Knife: 10 cm, 60 per day.
Mold: 4 cm, 300 per day.
Pacific oyster: 5 cm, 60 per day. Flat oyster: 6 cm, 60 per day.
Whelk: no minimum size, 500 per day.
Abalone and scallops: fishing is closed during the summer.
Source: Regulations governing recreational beachcombing in Morbihan (Littorea network, based on current ordinances). Rules are subject to change: be sure to check them before heading out.
✅ Rules to Follow
Do not harvest shellfish between sunset and sunrise.
Sort your catch on the spot and release any shellfish that are too small.
Put the overturned stones back in place and fill in the holes.
Do not fish within 15 meters of oyster beds or in eelgrass beds.
The sale of catches is prohibited in any form.
🛟 Your Safety on the Foreshore
⏰ Check the low tide time and the tidal range before you go.
👥 Don't go out alone, and let a loved one know where you're going.
🌊 Watch for rising water levels and be wary of fog.
📱 Make sure your phone is charged. Emergency at sea: 196. From the beach: 112.
🧊 Avoid fishing after heavy rain, keep your shellfish refrigerated, and eat them within 24 hours.
🚣 Swimming, sailing, and walks, depending on the tide
At low tide, the water recedes and the beaches get wider. When the tidal range is high, the water comes back in quickly: stay above the high-tide line and keep an eye on the children. In July and August, Carnac’s Grande Plage is patrolled.
For sailing and kayaking, departure times are often based on the tides: check with the Carnac Yacht Club or at the port of La Trinité-sur-Mer. On foot, the Customs Officers’ Trail (GR34) runs along the coast and offers beautiful views of the foreshore. All the beaches in the area are featured in our guide, “Beaches of Carnac and La Trinité-sur-Mer.”
📋 Where can I view the 2027 schedules day by day?
maree.shom.fr: SHOM's official, free service, providing one-year forecasts.
Météo Consult, La Trinité-sur-Mer: month-by-month tables for the entire year 2027, based on data from SHOM.
Marée.info: tide times and tidal coefficients for La Trinité-sur-Mer, data from SHOM.
Responsible Shore Fishing: The ARS Bretagne website on the sanitary quality of fishing sites.
❓ Frequently Asked Questions
What will be the highest tide in Carnac in 2027?
Thursday, September 2, 2027, with a tidal coefficient of 112. In La Trinité-sur-Mer, low tide is expected at 12:42 p.m. (0.34 m), and high tides are expected at 6:38 a.m. (5.68 m) and 6:47 p.m. (5.88 m).
When are the spring tides in the summer of 2027?
July 6 (coefficient 99), August 3–6 (108 on August 4), and August 31–September 4 (112 on September 2).
When is the best time to go shore fishing?
Go down to the foreshore before low tide and come back up as soon as low tide is reached, because the tide comes back in faster than you might think. Also check the ARS Bretagne map for information on the site’s water quality.
Are the beaches far from Camping Les Druides?
No: the beaches at Beaumer and Men-Dû are 500 meters from the campground.
📞 Practical Information
⚠️ Camping Les Druides provides this information for reference only. It does not organize beach fishing trips or water sports activities. The times listed are SHOM forecasts: check today’s tide schedule before heading out.
ℹ️ Carnac Tourist Office
Address: 74 Avenue des Druides, 56340 Carnac → Directions
Phone: 02 97 52 13 52
Website: www.ot-carnac.fr
🏕️ Les Druides Campground
Address: 55 Chemin de Beaumer, 56340 Carnac → Directions
Phone: +33 2 97 52 08 18
Email: contact@camping-les-druides.com
Website: www.camping-les-druides.com
Mobile homes and campsites just 500 meters from the beaches: check out the 2027 rates and plan your stay to coincide with the spring tides.