Fetching this spot's conditions…
Tip of the moment
Fetching this spot's conditions…
Tip of the moment
La Trinité-sur-Mer · Bretagne
Today's take
Window: 09:00–12:00, with caution — read the safety panel before you go.
Water temperature
13.2 °C
Verdict
Pleasant
Underwater visibility
~1.8 m
satellite reading from 2 days ago
When to go
Good from 09:00 to 12:00.
Then from 17:00 to 18:00.
Pin colours:swimmablecautionnot advisedconditions not loaded yet
Forecasts come from ~8 km resolution models: very local effects (a sheltering pier, a lagoon pass) are not captured.
Wave heights are significant heights: individual waves up to 2× this height still occur.
Four wave models are compared for this point: EWAM, GWAM, Météo-France WAM and ECMWF WAM.
Tide times derived from modelled sea level (± a few tens of minutes) — not official tide tables.
Missing data is shown as missing — never silently estimated.
Weather and marine data: Open-Meteo.com (CC BY 4.0), wave models from the Deutscher Wetterdienst (CC BY 4.0). Forecasts are not guarantees. · Data fetched at 05:19 UTC
Water clarity generated using E.U. Copernicus Marine Service Information.
Windows, comfort score and verdicts are computed by oswim from this data — modified values, not the institutes' raw figures.
min 9 · max 35 km/h · west sector · gusts 59 km/h
Current · 0 – 5 km/h
Modeled offshore drift is notable right now — a timing indication for this current-exposed spot, not a measurement at the shore.
Modeled total surface drift (MeteoFrance SMOC, ~8 km grid — the provider states coastal accuracy is limited); shown only where this spot is curated as current-exposed. Levels from World Triathlon rule 10.4b (2026).
Tidal cut-off · Second half of the rise
Rising tide, second half: access routes can flood behind you. Check your exit before entering.
Curated spot hazard · fires from mid-rise to high water (engineering choice)
Thunderstorm · None forecast
No thunderstorms forecast.
World Triathlon: stop on lightning
Visibility · 5 – 43 km
Good visibility.
Loss of bearings and collision risk
Post-rain pollution · 0.2 – 0.7 mm over 24 h
When it rains hard, runoff from roads and fields and sewer overflows carry bacteria out to sea. Nothing significant has fallen in the last 24 hours.
Official sampling is weekly at best; between two samples, recent rain is the recognized warning signal (EEA)
Jellyfish: no recent info. If you're there, tell us what you see — even “none” helps the next swimmer.
Water quality · Excellent · 2025 season
Computed from the samples of the last four bathing seasons. It says what the water here has been, not what it is today: after heavy rain, even an excellent beach degrades for a day or two.
Health authority classification (EU directive 2006/7/EC), published once per bathing season
In all cases: bright swim cap and tow float so boats can see you.
Consolidated ladder: World Aquatics / World Triathlon / FFTri rules + manufacturer thermal guides
Depth as you head out: 400 m → 1.0 m · 800 m → 3.4 m
Modelled depths (EMODnet, the European seabed model), stated without the tide: at low water there is less. A swimming bearing, never a navigation aid.
Tidal cut-off risk
On a rising tide, sandbanks and rocks can get cut off from the shore. Check tide times before venturing out.
Kervillen car park. Unsupervised outside July–August.
Worth knowing
These sheltered waters of the Bay of Quiberon host a quiet but rich marine life, from anemones and native oysters to scallops, a sign of a coastline that has stayed remarkably unspoiled.
Spot profile pending on-site verification.