Water quality
Monitoring of the Ostreopsis micro-algae: samples, history and reports.
Concentration trends
Logarithmic scale. Zero values and "below detection threshold" values cannot be plotted on this scale (see the full table below). Dark red dots indicate a beach closure.
Approved testimonials
21- 🤿 Diving (30 min to 1 h) on 16/08/2026 · no symptoms
- 🌊 Open-water swimming (Less than 30 min) on 11/08/2026 · symptoms on 13/08/2026🟢 Mild🫁 Breathing difficulty👃 Throat / nose irritation🤢 Nausea
- 🌊 Open-water swimming (30 min to 1 h) on 13/08/2026 · no symptoms
- 🏊 Swimming (30 min to 1 h) on 12/08/2026 · no symptoms
- 🏊 Swimming (1 h to 3 h) on 10/08/2026 · symptoms on 11/08/2026🟠 Moderate😷 Cough🫁 Breathing difficulty
- 🌊 Open-water swimming (1 h to 3 h) on 07/08/2026 · symptoms on 08/08/2026🟠 Moderate💪 Muscle aches
- 🌊 Open-water swimming (30 min to 1 h) on 03/08/2026 · symptoms on 05/08/2026🔴 Severe👁️ Irritated eyes🌡️ Fever / chills
- 🌊 Open-water swimming (Less than 30 min) on 02/08/2026 · symptoms on 03/08/2026🟢 Mild🌡️ Fever / chills😷 Cough💪 Muscle aches
- 🌊 Open-water swimming (1 h to 3 h) on 02/08/2026 · no symptoms
- 🏊 Swimming (1 h to 3 h) on 02/08/2026 · symptoms on 02/08/2026🔴 Severe🫁 Breathing difficulty🌡️ Fever / chills🤕 Headache
- 🏄 Surfing (More than 3 h) on 02/08/2026 · symptoms on 02/08/2026🟠 Moderate😷 Cough💫 Dizziness
- 🌊 Open-water swimming (More than 3 h) on 30/07/2026 · symptoms on 01/08/2026🟢 Mild😷 Cough🫁 Breathing difficulty
- 🏊 Swimming (Less than 30 min) on 01/08/2026 · no symptoms
- 🏊 Swimming (Less than 30 min) on 30/07/2026 · symptoms on 31/07/2026🟠 Moderate👁️ Irritated eyes🩹 Skin irritation
- 🌊 Open-water swimming (1 h to 3 h) on 29/07/2026 · symptoms on 31/07/2026🟠 Moderate🩹 Skin irritation👁️ Irritated eyes
- 🌊 Open-water swimming (1 h to 3 h) on 30/07/2026 · symptoms on 30/07/2026🟢 Mild👁️ Irritated eyes
- 🌊 Open-water swimming (More than 3 h) on 29/07/2026 · symptoms on 29/07/2026🟠 Moderate🌡️ Fever / chills👃 Throat / nose irritation
- 🚶 Walk along the seashore (1 h to 3 h) on 27/07/2026 · symptoms on 29/07/2026🟠 Moderate🫁 Breathing difficulty
- 🏊 Swimming (30 min to 1 h) on 21/07/2026 · symptoms on 21/07/2026🟢 Mild👃 Throat / nose irritation
- 🏊 Swimming (30 min to 1 h) on 14/07/2026 · symptoms on 14/07/2026🔴 Severe🫁 Breathing difficulty
- 🏊 Swimming (1 h to 3 h) on 10/07/2026 · no symptoms
Testimonials are anonymous and shown after moderation. Correlation does not imply causation.
Full sampling history
| Sample | Result | Cells/L | siamensis | ovata | Temp. | Status |
|---|---|---|---|---|---|---|
| 02/07/2026 | 03/07/2026 | 120 | 6% | 94% | 22.8°C | Low |
| 30/06/2026 | 01/07/2026 | < 40 | 64% | 36% | 22.8°C | Undetectable |
The beach
Tides, daylight and practical information — unrelated to water quality.
Practical information
🛟 Lifeguarded swimmingSand560 m of beach
Nearby
🅿️ Car park🚻 Toilets🚰 Drinking water🍽️ Food and drink
View this beach on OpenStreetMap — General information © OpenStreetMap contributors (ODbL)
Data sources
- Official samples: Communauté d'Agglomération Pays Basque (CAPB) — the only ones used for status and closures.
- Tides: Open-Meteo forecasts (indicative).
- General beach information: OpenStreetMap contributors (ODbL) — may be incomplete or out of date.