France · Loire-Atlantique
Grande Plage de Saint-Nazaire
Loire-Atlantique, 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 | 21.8 | 0.4 |
| Thu 3 | 21.9 | 0.5 |
| Fri 4 | 22.1 | 0.5 |
| Sat 5 | 23.0 | 0.5 |
| Sun 6 | 22.6 | 0.7 |
| Mon 7 | 22.7 | 0.8 |
| Tue 8 | 22.5 | 1.1 |
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: Good2018
- 2019: Poor2019
- 2020: Poor2020
- 2021: Poor2021
- 2022: Sufficient2022
- 2023: Good2023
- 2024: Excellent2024
- 2025: Good2025
Good in the most recent season, and 7 of 11 classified years rated Excellent or Good.
- Excellent
- Good
- Sufficient
- Poor
- Not classified
View as table
| Year | Classification |
|---|---|
| 2015 | Good |
| 2016 | Good |
| 2017 | Good |
| 2018 | Good |
| 2019 | Poor |
| 2020 | Poor |
| 2021 | Poor |
| 2022 | Sufficient |
| 2023 | Good |
| 2024 | Excellent |
| 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
- Villes Martin2.0 kmLoire-Atlantique
- Plage Des Poilus2.8 kmLoire-Atlantique
- Plage Des Pins3.6 kmLoire-Atlantique
- Porce4.0 kmLoire-Atlantique
Distances calculated as straight-line (haversine) from official coordinates.
Getting there & around
- Easy by car — there's parking close to the beach.
- Bus stop: Quatzhorloges, about ~350 m away.
- Ferry: Saint-Nazaire, about ~840 m away.
Food, stays & town
- Nearest town: Saint-Nazaire, about ~600 m away.
- 79 places to eat within 1 km Closest is Restaurant Le 16, about ~130 m away.
- 7 places to stay mapped nearby Closest is Holiday Inn Express, about ~590 m away.
- 21 shops nearby, the closest about ~430 m away
What kind of beach is this?
This is a town beach, woven into the everyday fabric of a city or larger settlement — expect company on warm days, especially through July and August, alongside easy access to shops and services.
Estimated from OpenStreetMap surroundings data (ODbL).
- Families
- Water sports
Is the water clean at Grande Plage de Saint-Nazaire?
Grande Plage de Saint-Nazaire 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. There's parking about ~130 m from the beach.
Over the 11 classified seasons on record, 7 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. Worth noting: the rating slipped from Excellent to Good in 2025, so it's especially worth checking the latest local advisories. The nearest town, Saint-Nazaire, is about ~600 m 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 79 places to eat within a kilometre — Restaurant Le 16 is the closest, about ~130 m away.
Frequently asked questions
Is Grande Plage de Saint-Nazaire safe to swim in?
Yes. Grande Plage de Saint-Nazaire's official 2025 rating is Good — one notch below the top classification — and 7 of 11 classified seasons here have rated Excellent or Good. That said, the rating slipped from Excellent to Good in 2025, so it's worth checking for current local advisories too.
What temperature is the sea at Grande Plage de Saint-Nazaire right now?
Grande Plage de Saint-Nazaire's sea temperature currently sits at around 22°C, based on the latest update — check the “Right now” panel above for the full live picture. That's the reading right off Loire-Atlantique. On the modeled climatology here, August usually runs warmest.
When does Grande Plage de Saint-Nazaire have the warmest water?
For swimming, July–September is usually the best call — that's the modeled window when the sea here runs warmest. That applies to the water around Loire-Atlantique. Within that window, August is typically the single warmest month.
Where does the water quality rating come from?
Behind the annual grade: a season of testing for intestinal enterococci and E. coli, reported to the European Environment Agency each spring under the EU Bathing Water Directive. A few countries, Croatia via IZOR included, also publish individual in-season samples ahead of that report, but Grande Plage de Saint-Nazaire doesn't have one published yet.
Is there parking near Grande Plage de Saint-Nazaire?
By car, it's easy — parking is right by the beach. By bus, the nearest stop is Quatzhorloges, about ~350 m away. By ferry, the nearest landing is Saint-Nazaire, about ~840 m away. The nearest town is Saint-Nazaire, about ~600 m away.