France · Ille-et-Vilaine
Bon Secours
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 | 21.6 | 0.6 |
| Thu 3 | 21.5 | 0.6 |
| Fri 4 | 21.4 | 0.9 |
| Sat 5 | 21.6 | 0.6 |
| Sun 6 | 21.6 | 0.6 |
| Mon 7 | 21.6 | 0.6 |
| Tue 8 | 21.4 | 1.3 |
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: Good2021
- 2022: Good2022
- 2023: Sufficient2023
- 2024: Poor2024
- 2025: Poor2025
Poor in the most recent season, and 8 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 | Good |
| 2022 | Good |
| 2023 | Sufficient |
| 2024 | Poor |
| 2025 | Poor |
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 Mole279 mIlle-et-Vilaine
- L'Eventail662 mIlle-et-Vilaine
- Les Bas Sablons1.4 kmIlle-et-Vilaine
- Piscine Du Pool (Ecluse)1.9 kmCôtes-d'Armor
Distances calculated as straight-line (haversine) from official coordinates.
Getting there & around
- Easy by car — there's parking close to the beach.
- Bus stop: Intra-Muros, about ~610 m away.
Food, stays & town
- Nearest town: Saint-Malo, about ~300 m away.
- 132 places to eat within 1 km Closest is Au Bain des Dames, about ~50 m away.
- 27 places to stay mapped nearby Closest is Hôtel de la Porte Saint-Pierre, about ~110 m away.
- 1 shop nearby, 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 Bon Secours?
Bon Secours sits on a stretch of coast classed as a coastal bathing site, carrying an official EU Bathing Water rating of Poor 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 ~80 m from the beach.
Over the 11 classified seasons on record, 8 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 Poor for 2 straight years. The nearest town, Saint-Malo, is about ~300 m away.
That “Poor” 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 132 places to eat within a kilometre — Au Bain des Dames is the closest, about ~50 m away.
Frequently asked questions
Is Bon Secours safe to swim in?
Bon Secours's official 2025 rating is Poor, which is why local advisories and posted flags are worth checking before swimming.
What's the current water temperature at Bon Secours?
The most recent reading for Bon Secours shows the sea at around 21°C. For live, up-to-the-hour conditions, see the “Right now” panel above. That's the reading right off Ille-et-Vilaine. On the modeled climatology here, August usually runs warmest.
When does Bon Secours have the warmest water?
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.
Who measures the water quality rating, and how?
Once a year, national authorities report a full season of testing for intestinal enterococci and E. coli to the European Environment Agency, which grades the season Excellent, Good, Sufficient or Poor under the EU Bathing Water Directive. A handful of countries, including Croatia via IZOR, also publish individual in-season samples ahead of that report — Bon Secours doesn't have that feed set up yet.
What's the easiest way to reach Bon Secours?
By car, it's easy — parking is right by the beach. By bus, the nearest stop is Intra-Muros, about ~610 m away. The nearest town is Saint-Malo, about ~300 m away.