Belle-Île wave buoy observations on Sat, Mar 21, 2026

Hourly readings from the Belle-Île wave buoy for Sat, Mar 21, 2026, including available wave height, period, direction, wind and sea temperature data.

Last observation shown Sat, Mar 21, 2026, 23:30

Oldest observation available Mon, Oct 18, 2010

Daily means for Mar 2026

Period Summary

Hog Says

48 wave-buoy observations were recorded during the day. Typical wave height was 2.2 ft (10th–90th percentile 2–2.8 ft), while mean peak wave period was 11.2 seconds (10th–90th percentile 10.5–11.6 seconds). Typical calculated wave power was approximately 2.1 kW/m (10th–90th percentile 1.6–3.8 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.

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.

Belle-Île wave buoy hourly observations Sat, Mar 21, 2026Last observation shown Sat, Mar 21, 2026
Metric	Sat 00:00	Sat 00:30	Sat 01:00	Sat 01:30	Sat 02:00	Sat 02:30	Sat 03:00	Sat 03:30	Sat 04:00	Sat 04:30	Sat 05:00	Sat 05:30	Sat 06:00	Sat 06:30	Sat 07:00	Sat 07:30	Sat 08:00	Sat 08:30	Sat 09:00	Sat 09:30	Sat 10:00	Sat 10:30	Sat 11:00	Sat 11:30	Sat 12:00	Sat 12:30	Sat 13:00	Sat 13:30	Sat 14:00	Sat 14:30	Sat 15:00	Sat 15:30	Sat 16:00	Sat 16:30	Sat 17:00	Sat 17:30	Sat 18:00	Sat 18:30	Sat 19:00	Sat 19:30	Sat 20:00	Sat 20:30	Sat 21:00	Sat 21:30	Sat 22:00	Sat 22:30	Sat 23:00	Sat 23:30
Significant wave height (ft)	2	2	2	2	2	2	2	2	2	2	2	2	2	2	2	2	2	2	2	2	2	2	2	2	2	2	2	2	2	2	2	2	2	2	2	2	2	2	3	3	3	3	3	3	3	3	3	3
Maximum wave height (ft)	3	4	3	3	4	3	4	3	3	3	3	3	4	4	4	4	4	4	3	4	4	4	3	4	3	3	3	3	3	3	3	3	3	4	3	3	4	3	4	4	5	5	4	4	4	5	5	5
Peak period (s)	11	12	12	12	11	12	11	12	12	11	11	12	11	11	11	11	11	11	11	11	11	10	10	10	9	10	11	12	11	12	11	11	11	12	12	11	11	11	11	11	12	11	12	12	11	11	11	11
Average period (s)	10	10	10	10	9	9	9	10	9	9	10	10	8	8	9	10	10	8	9	10	10	10	10	10	9	9	8	8	8	7	8	9	10	10	11	11	11	10	10	9	9	11	10	9	10	10	10	11
Mean period Tm02 (s)	7	7	7	6	6	6	6	6	6	6	6	6	5	6	6	7	6	5	6	7	7	7	6	7	6	5	5	5	5	5	6	6	6	6	7	7	7	7	6	5	5	7	6	6	6	6	6	6
Peak wave direction	W	W	W	WNW	W	W	W	W	W	W	W	W	W	W	W	W	W	WNW	W	WNW	W	W	W	W	W	W	W	W	W	W	W	W	W	W	W	W	W	W	W	W	W	W	W	W	W	W	W	W
Directional spread (°)	39.1	38.3	36.6	44.0	36.8	42.2	39.2	34.5	37.2	34.9	38.0	31.8	39.0	38.4	33.3	36.8	34.7	37.1	36.3	32.3	30.4	31.6	34.1	27.9	28.9	37.7	40.5	37.2	42.5	44.9	41.3	41.6	37.1	42.3	38.0	33.6	36.9	39.7	35.0	39.9	32.8	36.0	32.9	36.8	36.6	28.6	34.2	37.6
Water temperature(°C)	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-

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The observation data displayed on this page is from the Cerema CANDHIS coastal wave observatory.

Learn how SurfHog combines, checks and summarizes observations in the data and methodology notes.

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