Can I swim at Plage des Grands Sables right now?

The sea at Plage des Grands Sables is currently 21.6°C — good swimming conditions. Most swimmers will find the water comfortable when it's above 22°C; below 18°C feels fresh and a wetsuit is recommended.

What will the sea temperature be at Plage des Grands Sables next week?

Based on long-term June averages and the latest marine model, expect the sea around Plage des Grands Sables to sit close to 22.1°C over the next 7 days. Check the live 7-day chart above for the exact daily outlook.

When is the best month to swim at Plage des Grands Sables?

July – August – September are typically the warmest months to swim at Plage des Grands Sables, with sea temperatures at their seasonal peak.

Do I need a wetsuit at Plage des Grands Sables?

With water currently at 21.6°C: above 22°C no wetsuit needed; 18–22°C a shorty is comfortable for long swims; 14–18°C a 3/2mm full suit; below 14°C a 4/3mm or thicker.

France

Brittany · Atlantic Ocean

Plage des Grands Sables

The only convex beach in Europe, on Groix island.

Pleasant water with a moderate swell and a moderate breeze — good swimming conditions.

View on map OpenStreetMap Directions

Sea temperature now

21.6°Cwarm

Good

Updated just now · Source: Open-Meteo Marine

Air temperature

19.5°C

Wave height

1.1 m

Wind

18.8 km/h

UV index

2.4 UV index

Location

Plage des Grands Sables on the map, with nearby beaches and live sea temperatures.

7-day forecast

Water, air, waves, wind and UV outlook for the week ahead.

Wetsuit recommendation

Shorty 2mm

At 21.6°C a 2mm shorty keeps surfers warm; lap swimmers can usually skip the neoprene.

Surf & watersports

Pleasant but not warm. A short-arm short-leg ("shorty") wetsuit traps body heat through the core while leaving arms and legs free. Open-water swimmers training for 30–60 minutes can usually go without; longer sessions benefit from a thin swim wetsuit.

Open-water swimming

Most swimmers fine to 60 minutes without; consider a 2mm swim suit beyond.

Recommendation tuned for Plage des Grands Sables's current water temperature. Individual tolerance, wind chill, and session length all matter — when in doubt, size up.

Quick answer

Can I swim at Plage des Grands Sables today?

The sea is currently 21.6°C — good swimming conditions. Most swimmers will find it pleasant.

Key takeaways

• Located in Brittany, France (Atlantic Ocean).
• Family friendly with calm, accessible water.
• Live data refreshed hourly from Open-Meteo Marine.

Monthly sea temperature averages

Tap any month to see what to expect — based on regional climatology.

Jan13°C Feb13°C Mar13°C Apr14°C May17°C Jun20°C Jul23°CBest Aug24°CBest Sep22°CBest Oct19°C Nov16°C Dec14°C

13°C → 24°C· Current month outlined· “Best” = within 2°C of the annual peak

Year-round sea temperature

Best swim months: Jun – Jul – Aug – Sep

Month	Sea	Comfort
Jan	13°C	Cold
Feb	13°C	Cold
Mar	13°C	Cold
Apr	14°C	Bracing
May	17°C	Bracing
Jun	20°C	Pleasant
Jul	23°C	Warm
Aug ⭐	24°C	Warm
Sep	22°C	Warm
Oct	19°C	Pleasant
Nov	16°C	Bracing
Dec	14°C	Bracing

Can you swim here? — Plage des Grands Sables