On the beach
Right now
Live conditions from Open-Meteo, refreshed hourly.
7-day outlook
7-day marine forecast from Open-Meteo.
Sea temperature
Next 7 days, °C
Wave height
Next 7 days, metres
View as table
| Day | Sea temp (°C) | Wave height (m) |
|---|---|---|
| Wed 2 | 19.9 | 1.0 |
| Thu 3 | 20.3 | 1.0 |
| Fri 4 | 20.1 | 1.0 |
| Sat 5 | 20.9 | 1.0 |
| Sun 6 | 20.5 | 0.9 |
| Mon 7 | 20.5 | 1.6 |
| Tue 8 | 20.2 | 1.9 |
Water quality history
Official EEA classification, one rating per bathing season, 2015–2025 — real data reported by national authorities.
- 2015: Excellent2015
- 2016: Excellent2016
- 2017: Excellent2017
- 2018: Excellent2018
- 2019: Excellent2019
- 2020: Excellent2020
- 2021: Excellent2021
- 2022: Excellent2022
- 2023: Excellent2023
- 2024: Good2024
- 2025: Good2025
Good in the most recent season, and 11 of 11 classified years rated Excellent or Good.
- Excellent
- Good
- Sufficient
- Poor
- Not classified
View as table
| Year | Classification |
|---|---|
| 2015 | Excellent |
| 2016 | Excellent |
| 2017 | Excellent |
| 2018 | Excellent |
| 2019 | Excellent |
| 2020 | Excellent |
| 2021 | Excellent |
| 2022 | Excellent |
| 2023 | Excellent |
| 2024 | Good |
| 2025 | Good |
Typical sea temperature by month
Modeled estimatePlausible seasonal climatology derived from latitude, for illustration — not a measured average.
Monthly sea temperature
Typical range across the year, °C
View as table
| Month | Typical sea temp (°C) |
|---|---|
| Jan | 15 |
| Feb | 14 |
| Mar | 15 |
| Apr | 17 |
| May | 19 |
| Jun | 22 |
| Jul | 23 |
| Aug | 24 |
| Sep | 24 |
| Oct | 22 |
| Nov | 20 |
| Dec | 17 |
Location & nearby beaches
Nearby beaches
- Port Melite1.7 kmMorbihan
- Locmaria2.0 kmMorbihan
- Grands Sables2.4 kmMorbihan
- Sables Rouges2.9 kmMorbihan
Distances calculated as straight-line (haversine) from official coordinates.
Getting there & around
- Easy by car — there's parking close to the beach.
- Bus stop: Port Tudy, about ~200 m away.
- Ferry: Traversées Lorient - Port Louis - Île de Groix, about ~260 m away.
Food, stays & town
- Nearest village: Groix, about ~700 m away.
- 25 places to eat within 1 km Closest is Pub de la Jetée, about ~100 m away.
- 10 places to stay mapped nearby Closest is Hôtel de la Jetée, about ~100 m away.
- 3 shops nearby, the closest about ~620 m away
What kind of beach is this?
This beach sits in a built-up resort setting, with hotels, restaurants and services clustered around it — a full-service stretch of coast that tends to be busy in peak season and quieter outside it.
Estimated from OpenStreetMap surroundings data (ODbL).
- Families
- Full-service days
Is the water clean at Cote D'Heno?
Cote D'Heno is a coastal bathing site with an official EU Bathing Water rating of Good for the 2025 season — meets the EU bathing-water standard in the latest annual assessment. That annual classification comes from the EU Bathing Water Directive: national authorities test for two indicator bacteria, intestinal enterococci and E. coli, throughout the bathing season, then report the full-season results to the European Environment Agency (EEA) the following spring — the 2025 season's rating was published in spring 2026, and the 2026 season won't be rated until spring 2027. In addition to that yearly rating, some national authorities — for Croatia, the national environmental authority — publish individual water sample results during the season itself, ahead of the annual report. On site you'll find Lifeguard, Sandy shore, and Toilets. You can park about ~260 m away.
That rating has been consistent: every one of the 11 classified seasons on record has come back Excellent or Good. The most reliable swimming window here typically runs from July–September, with the sea usually at its warmest around August. Outside that window the water is cooler and often quieter. It's been a consistently reliable spot too — the rating has held at Good for 2 straight years. Groix — the closest town — sits about ~700 m from here.
Worth remembering: “Good” isn't a live reading, it's an annual grade — Excellent, Good, Sufficient or Poor — set once a year from that season's water samples and describing the average, not this afternoon's conditions. For what the sea is doing right now, check the “Right now” panel and 7-day outlook above. It sits in Morbihan. There are 25 places to eat within a kilometre — Pub de la Jetée is the closest, about ~100 m away.
Frequently asked questions
Is the water at Cote D'Heno safe right now?
Generally, yes. Cote D'Heno holds a Good rating for 2025, the second-best classification, and 11 of 11 classified seasons have met the Excellent-or-Good bar. It's also held steady at Good for 2 straight years.
How cold or warm is the water at Cote D'Heno today?
As of the latest update, the sea temperature at Cote D'Heno is around 20°C — see the “Right now” panel above for live conditions. That's the reading right off Morbihan.
Which month has the warmest sea at Cote D'Heno?
The most reliable stretch for warm water runs through July–September, based on the modeled climatology. That applies to the water around Morbihan.
What does the water quality rating actually measure?
The annual classification — Excellent, Good, Sufficient or Poor — is built from a full season of official testing for intestinal enterococci and E. coli, reported to the European Environment Agency each spring. Some national authorities (Croatia's IZOR among them) also publish individual samples during the season itself; Cote D'Heno isn't yet covered by that in-season feed.
Can you drive to Cote D'Heno?
By car, it's easy — parking is right by the beach. By bus, the nearest stop is Port Tudy, about ~200 m away. By ferry, the nearest landing is Traversées Lorient - Port Louis - Île de Groix, about ~260 m away. The nearest town is Groix, about ~700 m away.