Miramar — Biarritz

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

🏊 Swimming (30 min to 1 h) on 26/07/2026 · no symptoms
🏊 Swimming (30 min to 1 h) on 20/07/2026 · no symptoms
🏊 Swimming (30 min to 1 h) on 14/07/2026 · symptoms on 14/07/2026🟠 Moderate
🩹 Skin irritation

Testimonials are anonymous and shown after moderation. Correlation does not imply causation.

Full sampling history

Sample	Result	Cells/L	siamensis	ovata	Temp.	Status

The beach

Tides, daylight and practical information — unrelated to water quality.

Practical information

🛟 Lifeguarded swimming340 m of beach

Nearby

🅿️ Car park🚻 Toilets🚰 Drinking water🍽️ Food and drink

View this beach on OpenStreetMap — General information © OpenStreetMap contributors (ODbL)

Today's tides

Monday 19/10/2026

Rising tide

Sunrise 08:25Sunset 19:16

Low tide
04:30
-1.0 m
High tide
10:54
+0.2 m
Low tide
17:34
-1.0 m

Next days

Tuesday 20/10/2026
- High tide00:03+0.1 m
- Low tide06:02-0.9 m
- High tide12:34+0.3 m
- Low tide18:53-1.1 m
08:2619:15
Wednesday 21/10/2026
- High tide01:18+0.3 m
- Low tide07:11-1.1 m
- High tide13:30+0.5 m
- Low tide19:51-1.4 m
08:2719:13

Indicative Open-Meteo forecasts — heights relative to mean sea level (not to chart datum).

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General beach information: OpenStreetMap contributors (ODbL) — may be incomplete or out of date.