Les Pierres Noires wave buoy observations on Wed, Apr 9, 2025

Hourly readings from the Les Pierres Noires wave buoy for Wed, Apr 9, 2025, including available wave height, period, direction, wind and sea temperature data.

Last observation shown Wed, Apr 9, 2025, 23:30

Oldest observation available Sat, Oct 15, 2005

Daily means for Apr 2025

Period Summary

Hog Says

48 wave-buoy observations were recorded during the day. Typical wave height was 6.1 ft (10th–90th percentile 4.3–7.1 ft), while mean peak wave period was 12.8 seconds (10th–90th percentile 12.2–13.5 seconds). Typical calculated wave power was approximately 20 kW/m (10th–90th percentile 8.7–28.8 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 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 Wed, Apr 9, 2025Last observation shown Wed, Apr 9, 2025
Metric	Wed 00:00	Wed 00:30	Wed 01:00	Wed 01:30	Wed 02:00	Wed 02:30	Wed 03:00	Wed 03:30	Wed 04:00	Wed 04:30	Wed 05:00	Wed 05:30	Wed 06:00	Wed 06:30	Wed 07:00	Wed 07:30	Wed 08:00	Wed 08:30	Wed 09:00	Wed 09:30	Wed 10:00	Wed 10:30	Wed 11:00	Wed 11:30	Wed 12:00	Wed 12:30	Wed 13:00	Wed 13:30	Wed 14:00	Wed 14:30	Wed 15:00	Wed 15:30	Wed 16:00	Wed 16:30	Wed 17:00	Wed 17:30	Wed 18:00	Wed 18:30	Wed 19:00	Wed 19:30	Wed 20:00	Wed 20:30	Wed 21:00	Wed 21:30	Wed 22:00	Wed 22:30	Wed 23:00	Wed 23:30
Significant wave height (ft)	5	6	6	7	7	7	7	7	7	7	7	8	7	8	7	7	7	6	6	6	6	6	7	6	7	6	6	7	6	6	6	6	6	5	5	5	5	5	5	4	5	4	4	4	4	4	4	4
Maximum wave height (ft)	9	10	10	10	12	11	13	10	12	12	12	13	11	11	12	10	11	10	10	10	11	9	12	9	11	10	10	11	11	10	9	9	9	9	7	7	8	7	6	7	7	6	7	6	8	6	6	8
Peak period (s)	11	15	13	15	13	14	13	13	13	13	14	13	14	13	14	14	13	13	14	13	13	12	13	13	13	12	12	12	12	13	13	11	12	12	12	12	12	13	13	12	12	13	13	13	12	13	13	12
Average period (s)	12	13	13	13	13	13	13	13	13	12	13	13	13	13	13	13	13	13	13	13	12	12	13	12	12	12	12	12	11	12	11	11	11	11	11	11	11	11	11	12	11	10	10	10	10	9	9	9
Mean period Tm02 (s)	9	9	10	10	10	10	10	9	9	9	9	10	9	10	9	10	10	9	9	9	9	9	9	9	9	9	8	8	7	7	7	7	6	7	6	6	6	7	7	7	6	5	6	6	6	5	5	6
Peak wave direction	WSW	WSW	W	W	W	W	WSW	WSW	WSW	WSW	WSW	W	WSW	WSW	WSW	WSW	WSW	WSW	WSW	WSW	WSW	WSW	WSW	WSW	WSW	WSW	WSW	WSW	WSW	WSW	WSW	WSW	WSW	WSW	WSW	W	W	WSW	WSW	WSW	WSW	WSW	WSW	W	WSW	WSW	W	WSW
Directional spread (°)	21.8	22.1	22.6	19.5	24.3	22.8	20.4	19.1	25.2	22.3	22.4	25.6	24.6	20.8	25.0	21.4	23.7	23.8	24.2	25.6	24.0	25.0	25.5	20.8	24.7	23.4	27.1	22.8	24.9	24.5	27.3	25.0	27.0	23.5	24.7	25.7	27.6	26.2	27.8	26.0	30.0	36.1	28.2	24.4	30.5	32.5	31.0	34.5
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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