France · Loire-Atlantique
Vioreau
Loire-Atlantique, France
On the beach
Right now
Sample dataIllustrative conditions — the live Open-Meteo marine feed wasn't reachable, so these are deterministic placeholder values that will be replaced automatically once the feed is available.
7-day outlook
Sample dataModeled placeholder forecast for demonstration — will be replaced by a live marine-weather feed.
Sea temperature
Next 7 days, °C
Wave height
Next 7 days, metres
View as table
| Day | Sea temp (°C) | Wave height (m) |
|---|---|---|
| Wed 2 | 27.8 | 0.1 |
| Thu 3 | 27.3 | 0.1 |
| Fri 4 | 27.0 | 0.1 |
| Sat 5 | 27.0 | 0.1 |
| Sun 6 | 27.4 | 0.1 |
| Mon 7 | 27.9 | 0.1 |
| Tue 8 | 28.1 | 0.1 |
Water quality history
Official EEA classification, one rating per bathing season, 2015–2025 — real data reported by national authorities.
- 2015: Good2015
- 2016: Good2016
- 2017: Good2017
- 2018: Sufficient2018
- 2019: Good2019
- 2020: Good2020
- 2021: Excellent2021
- 2022: Excellent2022
- 2023: Not classified2023
- 2024: Not classified2024
- 2025: Excellent2025
Excellent in the most recent season, and 8 of 9 classified years rated Excellent or Good.
- Excellent
- Good
- Sufficient
- Poor
- Not classified
View as table
| Year | Classification |
|---|---|
| 2015 | Good |
| 2016 | Good |
| 2017 | Good |
| 2018 | Sufficient |
| 2019 | Good |
| 2020 | Good |
| 2021 | Excellent |
| 2022 | Excellent |
| 2023 | Not classified |
| 2024 | Not classified |
| 2025 | Excellent |
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
- Plan D'Eau Route de Rennes16 kmLoire-Atlantique
- Plan D'Eau Du Pont Cornouaille17 kmLoire-Atlantique
- Plan D'Eau Du Chêne23 kmLoire-Atlantique
- Etang de Saint Aubin30 kmMaine-et-Loire
Distances calculated as straight-line (haversine) from official coordinates.
Getting there & around
- Easy by car — there's parking close to the beach.
Food, stays & town
- Nearest village: Joué-sur-Erdre, about ~3.4 km away.
- 2 places to eat within 1 km Closest is Crêperie du Lac, about ~410 m away.
- 1 place to stay mapped nearby Closest is Aire naturelle "Le Temps de Vivre", about ~300 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).
- Families
Is the water clean at Vioreau?
Vioreau sits on a stretch of coast classed as a lake bathing site, carrying an official EU Bathing Water rating of Excellent 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 Loire-Atlantique. You can park about ~80 m away.
Looking to avoid the busiest weeks? The water is typically warmest around August, with the most reliable swimming window running July–September; outside that stretch you'll find a cooler sea but a quieter beach. Over the 9 classified seasons on record, 8 have come back Excellent or Good — a track record worth checking each year rather than assuming. On site you'll find Sandy shore, Toilets, and Kids' area. Joué-sur-Erdre — the closest town — sits about ~3.4 km from here.
“Excellent” is one point on a four-step scale — Excellent, Good, Sufficient or Poor — assigned once per year from that season's water samples, not a live reading. It describes how the site performs on average across the season, not the exact water quality this afternoon; for day-to-day sea conditions, see the “Right now” and 7-day outlook panels above. There are 2 places to eat within a kilometre — Crêperie du Lac is the closest, about ~410 m away.
Frequently asked questions
Can you safely swim at Vioreau?
It's about as safe as bathing water gets: Vioreau's 2025 EU rating is Excellent, the top tier on the scale, and 8 of 9 classified seasons have come back Excellent or Good.
How warm is the sea at Vioreau right now?
That reading, around 28°C, is a placeholder rather than a live measurement, shown only because the marine-weather feed was temporarily unreachable; it updates automatically once the feed returns. That's the reading right off Loire-Atlantique.
What's the ideal time of year to swim at Vioreau?
July–September tends to be the sweet spot for swimming here, with sea temperatures usually peaking later in that stretch. That applies to the water around Loire-Atlantique.
What's behind the water quality rating shown above?
The grade comes from a full season of official sampling for intestinal enterococci and E. coli, reported to the European Environment Agency each spring under the EU Bathing Water Directive, which assigns Excellent, Good, Sufficient or Poor. Some countries (Croatia, via IZOR) also publish individual in-season samples ahead of that report; Vioreau doesn't have that feed yet.
How do you get to Vioreau?
By car, it's easy — parking is right by the beach. The nearest town is Joué-sur-Erdre, about ~3.4 km away.