Belle-Île wave buoy observations on Sat, Jul 18, 2026

Hourly readings from the Belle-Île wave buoy for Sat, Jul 18, 2026, including available wave height, period, direction, wind and sea temperature data.

Last observation shown Sat, Jul 18, 2026, 23:30

Oldest observation available Mon, Oct 18, 2010

Daily means for Jul 2026

Period Summary

Hog Says

48 wave-buoy observations were recorded during the day. Typical wave height was 1 ft (10th–90th percentile 0.7–2 ft), while mean average wave period was 4.8 seconds (10th–90th percentile 3.5–6.1 seconds). Mean water temperature was 21.8°C (10th–90th percentile 21.5–22.2°C). All 192 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, Jul 18, 2026Last observation shown Sat, Jul 18, 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)	1	1	1	1	1	1	1	1	1	1	1	1	1	1	1	1	1	1	1	1	1	1	1	1	1	1	1	1	1	1	1	1	1	1	1	1	2	2	2	2	2	2	2	2	2	2	2	2
Maximum wave height (ft)	2	2	2	2	2	2	2	1	1	2	2	1	2	1	1	1	2	1	1	1	1	2	1	1	1	1	2	1	2	1	1	2	2	1	2	2	3	3	3	3	3	3	3	4	3	4	4	4
Peak period (s)	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-
Average period (s)	4	4	4	4	5	5	6	5	5	5	5	5	5	6	6	6	6	5	6	6	6	6	7	6	7	6	6	6	5	5	4	4	4	4	3	3	3	3	4	3	4	4	4	4	4	4	4	4
Mean period Tm02 (s)	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-
Peak wave direction	WNW	WNW	WNW	WNW	WNW	W	W	W	W	W	W	WSW	W	W	W	W	W	W	W	W	W	W	W	W	W	W	W	W	W	W	W	W	W	W	W	WNW	WNW	WNW	WNW	WNW	WNW	WNW	WNW	W	WNW	WNW	WNW	WNW
Directional spread (°)	42.0	32.0	40.0	39.0	38.0	38.0	38.0	38.0	40.0	36.0	38.0	37.0	45.0	48.0	38.0	32.0	39.0	35.0	43.0	37.0	38.0	37.0	36.0	29.0	32.0	43.0	40.0	32.0	41.0	39.0	42.0	37.0	41.0	41.0	51.0	23.0	24.0	24.0	25.0	23.0	30.0	27.0	21.0	21.0	29.0	29.0	23.0	24.0
Water temperature(°C)	21.5	21.6	21.7	21.8	21.7	21.6	21.8	21.9	21.9	22.0	22.0	22.0	22.1	22.2	22.1	22.1	22.1	22.1	22.1	22.2	22.2	22.3	22.3	21.9	21.9	21.9	21.9	21.6	21.5	21.6	21.7	21.7	22.2	22.2	22.1	22.1	21.9	21.9	21.8	21.6	21.6	21.5	21.5	21.1	20.9	21.1	21.5	21.5

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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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