Les Pierres Noires wave buoy observations on Mon, Apr 13, 2026

Hourly readings from the Les Pierres Noires wave buoy for Mon, Apr 13, 2026, including available wave height, period, direction, wind and sea temperature data.

Last observation shown Mon, Apr 13, 2026, 23:30

Oldest observation available Sat, Oct 15, 2005

Daily means for Apr 2026

Period Summary

Hog Says

48 wave-buoy observations were recorded during the day. Typical wave height was 9.1 ft (10th–90th percentile 6.6–12.3 ft), while mean peak wave period was 12.3 seconds (10th–90th percentile 11.4–13 seconds). Typical calculated wave power was approximately 40 kW/m (10th–90th percentile 18.2–78.9 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 Les Pierres Noires wave buoy

Les Pierres Noires is a CANDHIS directional buoy west of Brittany, maintained through the French national sea-state observatory and its scientific and maritime partners. Its position near the offshore reef and lighthouse represents fully exposed Atlantic conditions approaching the Iroise Sea and western Brittany.

Its current data source reports wave height, wave period, wave direction, directional spread and sea temperature.

Les Pierres Noires wave buoy hourly observations Mon, Apr 13, 2026Last observation shown Mon, Apr 13, 2026
Metric	Mon 00:00	Mon 00:30	Mon 01:00	Mon 01:30	Mon 02:00	Mon 02:30	Mon 03:00	Mon 03:30	Mon 04:00	Mon 04:30	Mon 05:00	Mon 05:30	Mon 06:00	Mon 06:30	Mon 07:00	Mon 07:30	Mon 08:00	Mon 08:30	Mon 09:00	Mon 09:30	Mon 10:00	Mon 10:30	Mon 11:00	Mon 11:30	Mon 12:00	Mon 12:30	Mon 13:00	Mon 13:30	Mon 14:00	Mon 14:30	Mon 15:00	Mon 15:30	Mon 16:00	Mon 16:30	Mon 17:00	Mon 17:30	Mon 18:00	Mon 18:30	Mon 19:00	Mon 19:30	Mon 20:00	Mon 20:30	Mon 21:00	Mon 21:30	Mon 22:00	Mon 22:30	Mon 23:00	Mon 23:30
Significant wave height (ft)	12	13	13	13	13	13	12	11	12	11	12	11	10	10	9	9	9	9	9	9	10	9	9	9	9	9	8	10	9	9	10	10	9	8	8	7	7	7	7	7	6	7	6	6	6	6	7	7
Maximum wave height (ft)	21	20	19	21	20	21	19	17	15	17	18	17	16	15	14	13	17	14	16	12	15	13	13	13	14	14	13	16	17	13	17	14	15	12	13	14	11	14	11	11	10	12	10	9	11	10	11	11
Peak period (s)	13	14	13	13	14	13	13	12	13	13	13	12	13	13	12	12	13	13	13	13	13	13	13	12	12	12	13	12	12	12	12	12	12	12	11	11	12	11	11	11	12	12	12	12	11	12	11	11
Average period (s)	12	12	12	12	12	12	12	11	11	11	12	12	12	12	11	11	11	11	11	12	11	11	11	11	11	11	11	11	10	11	11	11	11	10	10	10	9	9	9	10	10	10	10	9	10	9	9	9
Mean period Tm02 (s)	9	9	9	9	9	9	9	8	9	8	9	9	9	9	9	9	9	9	9	9	9	9	8	8	8	8	8	8	8	8	8	8	8	8	7	7	7	7	7	7	7	7	7	6	6	6	6	6
Peak wave direction	WNW	WNW	WNW	WNW	WNW	WNW	WNW	WNW	WNW	WNW	WNW	WNW	WNW	WNW	WNW	WNW	WNW	WNW	WNW	WNW	WNW	WNW	WNW	WNW	WNW	WNW	WNW	WNW	WNW	WNW	WNW	WNW	WNW	WNW	WNW	WNW	WNW	WNW	WNW	WNW	WNW	WNW	WNW	WNW	WNW	W	WNW	WNW
Directional spread (°)	23.0	19.5	20.4	19.8	20.2	21.0	23.2	26.4	20.1	25.5	23.8	23.4	22.1	21.7	27.6	24.2	23.3	21.7	19.0	22.5	20.4	21.2	25.3	23.5	24.3	24.7	25.9	19.4	23.0	22.9	25.8	20.3	21.8	24.7	23.9	26.3	30.6	25.5	24.8	29.5	26.1	25.4	27.6	26.0	24.2	30.6	25.4	28.2
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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