France · Ille-et-Vilaine
Rotheneuf
Ille-et-Vilaine, France
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 | 21.7 | 0.6 |
| Thu 3 | 21.6 | 0.6 |
| Fri 4 | 21.5 | 0.9 |
| Sat 5 | 21.7 | 0.6 |
| Sun 6 | 21.8 | 0.6 |
| Mon 7 | 21.7 | 0.6 |
| Tue 8 | 21.5 | 1.3 |
Water quality history
Official EEA classification, one rating per bathing season, 2015–2025 — real data reported by national authorities.
- 2015: Good2015
- 2016: Sufficient2016
- 2017: Good2017
- 2018: Good2018
- 2019: Excellent2019
- 2020: Excellent2020
- 2021: Excellent2021
- 2022: Excellent2022
- 2023: Good2023
- 2024: Good2024
- 2025: Good2025
Good in the most recent season, and 10 of 11 classified years rated Excellent or Good.
- Excellent
- Good
- Sufficient
- Poor
- Not classified
View as table
| Year | Classification |
|---|---|
| 2015 | Good |
| 2016 | Sufficient |
| 2017 | Good |
| 2018 | Good |
| 2019 | Excellent |
| 2020 | Excellent |
| 2021 | Excellent |
| 2022 | Excellent |
| 2023 | Good |
| 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 | 16 |
| May | 19 |
| Jun | 21 |
| Jul | 23 |
| Aug | 24 |
| Sep | 23 |
| Oct | 22 |
| Nov | 19 |
| Dec | 17 |
Location & nearby beaches
Nearby beaches
- Le Val773 mIlle-et-Vilaine
- Le Nicet1.1 kmIlle-et-Vilaine
- Les Chevrets1.3 kmIlle-et-Vilaine
- Le Pont1.6 kmIlle-et-Vilaine
Distances calculated as straight-line (haversine) from official coordinates.
Getting there & around
- Easy by car — there's parking close to the beach.
- Bus stop: Les Îlots, about ~120 m away.
Food, stays & town
- Nearest town: Saint-Malo, about ~5.9 km away.
- 3 places to eat within 1 km Closest is Le Rothéneuf, about ~360 m away.
What kind of beach is this?
This beach belongs to a small coastal village. It's usually calmer than a resort or town beach, though a popular village spot can still fill up on the best summer days.
Estimated from OpenStreetMap surroundings data (ODbL).
Is the water clean at Rotheneuf?
Rotheneuf sits on a stretch of coast classed as a coastal bathing site, carrying an official EU Bathing Water rating of Good for the 2025 season. Under the EU Bathing Water Directive, national authorities test for intestinal enterococci and E. coli through the season and report the results the following spring — the 2025 rating was published in spring 2026, and 2026's won't follow 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. It sits in Ille-et-Vilaine. There's parking about ~140 m from the beach.
Over the 11 classified seasons on record, 10 have come back Excellent or Good — a track record worth checking each year rather than assuming. 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 3 straight years. The nearest town, Saint-Malo, is about ~5.9 km away.
That “Good” label comes from a full season of official water sampling, not a single test — it's one step on a four-point scale (Excellent, Good, Sufficient, Poor) reassessed once a year. Today's actual conditions can differ from the seasonal average, so for a live snapshot see the “Right now” and 7-day outlook panels above. There are 3 places to eat within a kilometre — Le Rothéneuf is the closest, about ~360 m away.
Frequently asked questions
Is Rotheneuf safe to swim in?
Yes. Rotheneuf's official 2025 rating is Good — one notch below the top classification — and 10 of 11 classified seasons here have rated Excellent or Good. It's also held steady at Good for 3 straight years.
What temperature is the sea at Rotheneuf right now?
Rotheneuf's sea temperature currently sits at around 21°C, based on the latest update — check the “Right now” panel above for the full live picture. That's the reading right off Ille-et-Vilaine. On the modeled climatology here, August usually runs warmest.
When should you plan a swimming trip to Rotheneuf?
For the warmest water, aim for July–September — that's when the modeled sea temperature is typically at its best. That applies to the water around Ille-et-Vilaine. Within that window, August is typically the single warmest month.
Where does the water quality rating come from?
It's based on official water samples: authorities test for intestinal enterococci and E. coli through the season, then report the full-season results to the European Environment Agency each spring, which assigns one of four grades — Excellent, Good, Sufficient or Poor. A few national authorities, including Croatia's IZOR, also publish individual samples during the season itself, ahead of that annual report — that isn't yet available for Rotheneuf.
What's the easiest way to reach Rotheneuf?
By car, it's easy — parking is right by the beach. By bus, the nearest stop is Les Îlots, about ~120 m away. The nearest town is Saint-Malo, about ~5.9 km away.