France · Charente-Maritime
Plage Des Gros Joncs
Charente-Maritime, 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 | 22.1 | 0.7 |
| Thu 3 | 22.5 | 0.6 |
| Fri 4 | 22.6 | 0.7 |
| Sat 5 | 23.4 | 0.8 |
| Sun 6 | 22.8 | 0.9 |
| Mon 7 | 22.7 | 1.1 |
| Tue 8 | 22.6 | 1.6 |
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: Excellent2024
- 2025: Excellent2025
Excellent 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 | Excellent |
| 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 | 24 |
| Aug | 24 |
| Sep | 24 |
| Oct | 22 |
| Nov | 20 |
| Dec | 17 |
Location & nearby beaches
Nearby beaches
- Plage Des Gollandieres1.2 kmCharente-Maritime
- Plage Des Grenettes1.9 kmCharente-Maritime
- Plage Du Petit Sergent2.2 kmCharente-Maritime
- Plage de Peu-Bernard3.1 kmCharente-Maritime
Distances calculated as straight-line (haversine) from official coordinates.
Getting there & around
- By car: there's parking about ~590 m from the beach.
- Bus stop: Le Bois-Plage-en-Ré - Plage de Gros Jonc, about ~200 m away.
Food, stays & town
- Nearest village: Le Bois-Plage-en-Ré, about ~1.8 km away.
- 1 place to eat within 1 km Closest is La Grillérade, about ~170 m away.
- 4 places to stay mapped nearby Closest is Interlude, about ~370 m away.
- 1 shop nearby, about ~1.1 km 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 Plage Des Gros Joncs?
Plage Des Gros Joncs is a coastal bathing site with an official EU Bathing Water rating of Excellent for the 2025 season — the highest official classification under the EU bathing-water 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 Showers. There's parking about ~590 m from the beach.
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 Excellent for 11 straight years. The nearest town, Le Bois-Plage-en-Ré, is about ~1.8 km away.
That “Excellent” 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's 1 place to eat near the beach — La Grillérade, about ~170 m away.
Frequently asked questions
Should you swim at Plage Des Gros Joncs?
Yes, without much reservation. Plage Des Gros Joncs holds the top EU Bathing Water classification, Excellent, for 2025, and 11 of 11 classified seasons here have rated Excellent or Good. It's also held steady at Excellent for 11 straight years.
What temperature is the sea at Plage Des Gros Joncs right now?
The most recent reading for Plage Des Gros Joncs shows the sea at around 22°C. For live, up-to-the-hour conditions, see the “Right now” panel above. That's the reading right off Charente-Maritime. On the modeled climatology here, August usually runs warmest.
When should you plan a swimming trip to Plage Des Gros Joncs?
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 Charente-Maritime. Within that window, August is typically the single warmest month.
Who measures the water quality rating, and how?
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 Plage Des Gros Joncs.
Is there parking near Plage Des Gros Joncs?
By car, there's parking about ~590 m from the beach. By bus, the nearest stop is Le Bois-Plage-en-Ré - Plage de Gros Jonc, about ~200 m away. The nearest town is Le Bois-Plage-en-Ré, about ~1.8 km away.