Les Pierres Noires wave buoy observations on Tue, Dec 16, 2025

Hourly readings from the Les Pierres Noires wave buoy for Tue, Dec 16, 2025, including available wave height, period, direction, wind and sea temperature data.

Last observation shown Tue, Dec 16, 2025, 23:30

Oldest observation available Sat, Oct 15, 2005

Daily means for Dec 2025

Period Summary

Hog Says

48 wave-buoy observations were recorded during the day. Typical wave height was 10.4 ft (10th–90th percentile 9–11.2 ft), while mean peak wave period was 13.6 seconds (10th–90th percentile 12.9–14.4 seconds). Typical calculated wave power was approximately 59.1 kW/m (10th–90th percentile 44.3–67.4 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 Tue, Dec 16, 2025Last observation shown Tue, Dec 16, 2025
Metric	Tue 00:00	Tue 00:30	Tue 01:00	Tue 01:30	Tue 02:00	Tue 02:30	Tue 03:00	Tue 03:30	Tue 04:00	Tue 04:30	Tue 05:00	Tue 05:30	Tue 06:00	Tue 06:30	Tue 07:00	Tue 07:30	Tue 08:00	Tue 08:30	Tue 09:00	Tue 09:30	Tue 10:00	Tue 10:30	Tue 11:00	Tue 11:30	Tue 12:00	Tue 12:30	Tue 13:00	Tue 13:30	Tue 14:00	Tue 14:30	Tue 15:00	Tue 15:30	Tue 16:00	Tue 16:30	Tue 17:00	Tue 17:30	Tue 18:00	Tue 18:30	Tue 19:00	Tue 19:30	Tue 20:00	Tue 20:30	Tue 21:00	Tue 21:30	Tue 22:00	Tue 22:30	Tue 23:00	Tue 23:30
Significant wave height (ft)	11	11	12	12	11	12	12	11	11	10	11	10	11	10	10	10	11	9	11	10	10	10	10	11	11	11	11	11	11	12	10	10	11	10	10	11	9	9	8	9	9	9	9	9	10	10	9	9
Maximum wave height (ft)	16	18	15	16	15	16	16	17	14	16	18	14	15	15	17	15	21	16	18	16	17	16	16	15	19	16	16	16	18	18	14	16	17	15	17	15	13	14	13	14	15	15	13	14	15	16	14	13
Peak period (s)	12	12	13	13	14	14	12	13	14	14	15	15	15	15	14	15	14	14	15	14	15	13	14	14	14	14	14	14	13	13	13	14	13	13	13	14	14	14	13	14	14	14	14	14	14	14	13	13
Average period (s)	11	11	12	12	11	12	11	12	12	12	12	13	13	13	13	14	13	12	14	12	13	13	13	13	13	12	13	12	12	12	11	12	12	12	12	13	13	12	12	13	13	13	13	13	13	13	12	13
Mean period Tm02 (s)	8	8	9	8	8	9	8	8	8	8	9	9	9	9	9	9	9	8	10	9	9	9	9	9	9	9	9	9	9	9	8	9	9	9	9	10	9	10	9	10	10	10	10	10	11	10	10	10
Peak wave direction	W	W	W	W	W	WNW	WNW	WNW	WNW	WNW	WNW	W	WNW	WNW	WNW	WNW	WNW	W	WNW	WNW	WNW	W	WNW	WNW	WNW	WNW	WNW	WNW	WNW	WNW	WNW	W	W	W	W	W	W	WNW	WNW	WNW	W	W	W	WNW	W	W	W	W
Directional spread (°)	26.5	21.6	21.7	24.1	24.3	24.0	26.5	24.6	25.2	27.2	22.7	22.4	21.2	24.5	24.5	21.0	18.9	24.3	19.9	23.6	25.5	23.8	27.4	21.3	22.0	22.3	21.8	23.3	22.7	20.5	25.2	25.7	23.1	26.1	23.6	21.3	23.7	25.6	23.2	25.6	22.3	21.3	24.2	22.0	21.0	23.0	26.4	24.2
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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