France · Vendée
Sion
Vendée, 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 | 0.7 |
| Thu 3 | 21.9 | 0.7 |
| Fri 4 | 22.1 | 0.7 |
| Sat 5 | 22.8 | 0.8 |
| Sun 6 | 22.2 | 0.9 |
| Mon 7 | 22.3 | 1.2 |
| Tue 8 | 22.1 | 1.5 |
Water quality history
Official EEA classification, one rating per bathing season, 2015–2025 — real data reported by national authorities.
- 2015: Excellent2015
- 2016: Good2016
- 2017: Sufficient2017
- 2018: Good2018
- 2019: Good2019
- 2020: Good2020
- 2021: Excellent2021
- 2022: Sufficient2022
- 2023: Sufficient2023
- 2024: Poor2024
- 2025: Poor2025
Poor in the most recent season, and 6 of 11 classified years rated Excellent or Good.
- Excellent
- Good
- Sufficient
- Poor
- Not classified
View as table
| Year | Classification |
|---|---|
| 2015 | Excellent |
| 2016 | Good |
| 2017 | Sufficient |
| 2018 | Good |
| 2019 | Good |
| 2020 | Good |
| 2021 | Excellent |
| 2022 | Sufficient |
| 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 | 17 |
| May | 19 |
| Jun | 22 |
| Jul | 23 |
| Aug | 24 |
| Sep | 24 |
| Oct | 22 |
| Nov | 20 |
| Dec | 17 |
Location & nearby beaches
Nearby beaches
- Riez582 mVendée
- Les Cinq Pineaux870 mVendée
- La Paree Preneau1.8 kmVendée
- Les Bussoleries1.8 kmVendée
Distances calculated as straight-line (haversine) from official coordinates.
Getting there & around
- Easy by car — there's parking close to the beach.
- Bus stop: Sion l'Océan, about ~370 m away.
Food, stays & town
- Nearest town: Saint-Hilaire-de-Riez, about ~2.6 km away.
- 4 places to eat within 1 km Closest is Café de la Plage, about ~340 m away.
- 3 places to stay mapped nearby Closest is Les Touristes, about ~390 m away.
- 2 shops nearby, the closest about ~420 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 Sion?
Sion 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 Vendée. You can park about ~180 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 11 classified seasons on record, 6 have come back Excellent or Good — a track record worth checking each year rather than assuming. On site you'll find Lifeguard, Sandy shore, and Toilets. Saint-Hilaire-de-Riez — the closest town — sits about ~2.6 km from here.
“Poor” 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 4 places to eat within a kilometre — Café de la Plage is the closest, about ~340 m away.
Frequently asked questions
Can you safely swim at Sion?
Not without checking first: Sion's 2025 rating is Poor, so look for local advisories and posted flags before swimming.
How cold or warm is the water at Sion today?
As of the latest update, the sea temperature at Sion is around 21°C — see the “Right now” panel above for live conditions. That's the reading right off Vendée.
Which month has the warmest sea at Sion?
The most reliable stretch for warm water runs through July–September, based on the modeled climatology. That applies to the water around Vendée.
What's behind the water quality rating shown above?
National authorities sample the water for intestinal enterococci and E. coli bacteria through the bathing season and report the full-season results to the European Environment Agency each spring for the season just finished, which assigns one of four annual classifications — Excellent, Good, Sufficient or Poor — under the EU Bathing Water Directive. Some national authorities, including Croatia's IZOR, also publish individual in-season sample results ahead of that annual report.
How do I get to Sion without a car?
By car, it's easy — parking is right by the beach. By bus, the nearest stop is Sion l'Océan, about ~370 m away. The nearest town is Saint-Hilaire-de-Riez, about ~2.6 km away.