Belle-Île wave buoy observations on Fri, Mar 20, 2026
Hourly readings from the Belle-Île wave buoy for Fri, Mar 20, 2026, including available wave height, period, direction, wind and sea temperature data.
Period Summary
Programmatically generated summary. Hog Says48 wave-buoy observations were recorded during the day. Typical wave height was 3 ft (10th–90th percentile 2.6–3.9 ft), while mean peak wave period was 12.5 seconds (10th–90th percentile 11.6–13.1 seconds). Typical calculated wave power was approximately 4.2 kW/m (10th–90th percentile 3.2–7.5 kW/m), derived from significant wave height and energy period. All 144 checked values passed quality control.
Generated only from the observations and comparisons shown on this page.
Line chart showing wave height, wave period and sea temperature for Belle-Île. Use the detailed observations table below for the same data in text form.
Sorry, there is no wave data :(
for Fri, Mar 20, 2026
About Belle-Île wave buoy
Belle-Île is a CANDHIS directional buoy south of Brittany, maintained through the Cerema-coordinated sea-state observatory and research partners. Its open Atlantic position represents conditions approaching Belle-Île and the sheltered-to-exposed transition along the Morbihan coast.
Its current data source reports wave height, wave period, wave direction, directional spread and sea temperature.
| Metric | ||||||||||||||||||||||||||||||||||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Significant wave height (ft) | 4 | 4 | 4 | 5 | 4 | 4 | 4 | 4 | 3 | 4 | 4 | 4 | 4 | 4 | 4 | 3 | 3 | 4 | 3 | 3 | 3 | 3 | 3 | 3 | 3 | 3 | 3 | 3 | 3 | 2 | 3 | 3 | 3 | 2 | 3 | 3 | 3 | 3 | 3 | 3 | 3 | 2 | 3 | 3 | 3 | 2 | 3 | 2 |
| Maximum wave height (ft) | 8 | 6 | 8 | 7 | 7 | 7 | 6 | 6 | 5 | 6 | 6 | 6 | 7 | 5 | 6 | 5 | 5 | 6 | 5 | 5 | 6 | 6 | 4 | 6 | 5 | 4 | 5 | 4 | 4 | 4 | 5 | 4 | 5 | 4 | 4 | 5 | 4 | 5 | 4 | 4 | 4 | 4 | 5 | 4 | 4 | 4 | 6 | 4 |
| Peak period (s) | 13 | 13 | 13 | 13 | 13 | 14 | 13 | 13 | 13 | 13 | 13 | 13 | 13 | 13 | 13 | 13 | 13 | 13 | 12 | 12 | 13 | 13 | 12 | 12 | 12 | 13 | 13 | 12 | 13 | 12 | 12 | 12 | 13 | 12 | 12 | 12 | 12 | 12 | 12 | 12 | 12 | 11 | 12 | 11 | 11 | 12 | 11 | 12 |
| Average period (s) | 10 | 10 | 11 | 12 | 10 | 10 | 11 | 10 | 10 | 11 | 10 | 10 | 11 | 10 | 11 | 9 | 9 | 10 | 9 | 9 | 9 | 10 | 10 | 11 | 9 | 8 | 9 | 9 | 10 | 9 | 11 | 11 | 10 | 11 | 11 | 11 | 11 | 12 | 11 | 12 | 11 | 11 | 11 | 11 | 11 | 11 | 11 | 11 |
| Mean period Tm02 (s) | 6 | 7 | 7 | 7 | 6 | 6 | 6 | 6 | 6 | 7 | 6 | 6 | 6 | 6 | 6 | 6 | 5 | 6 | 6 | 6 | 6 | 6 | 6 | 6 | 6 | 5 | 5 | 5 | 6 | 6 | 7 | 7 | 7 | 7 | 7 | 7 | 8 | 8 | 8 | 8 | 8 | 8 | 9 | 9 | 9 | 8 | 9 | 8 |
| Peak wave direction | W | W | W | W | W | W | W | W | W | W | W | W | WNW | W | W | W | W | WNW | W | W | W | W | W | W | WNW | W | W | W | W | W | W | W | W | W | W | WNW | WNW | W | W | W | W | WNW | WNW | WNW | WNW | WNW | WNW | W |
| Directional spread (°) | 34.4 | 35.8 | 27.8 | 27.4 | 34.4 | 29.9 | 35.6 | 34.1 | 37.3 | 34.0 | 32.3 | 34.1 | 28.7 | 30.6 | 29.8 | 34.3 | 37.2 | 34.8 | 35.6 | 33.5 | 42.0 | 43.5 | 35.6 | 37.5 | 39.6 | 41.4 | 38.0 | 38.5 | 34.6 | 40.6 | 34.7 | 39.0 | 37.3 | 41.7 | 34.3 | 37.3 | 30.6 | 36.8 | 31.6 | 32.3 | 35.8 | 40.2 | 32.7 | 31.6 | 30.9 | 35.4 | 33.8 | 32.1 |
| Water temperature(°C) | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - |
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Learn how SurfHog combines, checks and summarizes observations in the data and methodology notes.