Plateau du Four wave buoy observations on Sat, Dec 20, 2025
Hourly readings from the Plateau du Four wave buoy for Sat, Dec 20, 2025, including available wave height, period, direction, wind and sea temperature data.
Period Summary
Programmatically generated summary. Hog Says48 wave-buoy observations were recorded during the day. Typical wave height was 5.9 ft (10th–90th percentile 5.5–7.5 ft), while mean peak wave period was 10.9 seconds (10th–90th percentile 8.1–12.8 seconds). Typical calculated wave power was approximately 15.2 kW/m (10th–90th percentile 12.5–20.9 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.
Line chart showing wave height, wave period and sea temperature for Plateau du Four. Use the detailed observations table below for the same data in text form.
Sorry, there is no wave data :(
for Sat, Dec 20, 2025
About Plateau du Four wave buoy
Plateau du Four is a CANDHIS station associated with the SEM-REV offshore test site off Loire-Atlantique. Located near a shallow offshore bank west of Le Croisic, it supplies environmental context for marine-energy research and for an exposed sector between the Loire estuary and southern Brittany.
Its current data source reports wave height, wave period, wave direction, directional spread and sea temperature.
| Metric | ||||||||||||||||||||||||||||||||||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Significant wave height (ft) | 7 | 6 | 6 | 7 | 6 | 6 | 6 | 7 | 6 | 6 | 6 | 6 | 6 | 6 | 6 | 5 | 5 | 5 | 5 | 6 | 6 | 6 | 6 | 5 | 6 | 6 | 6 | 6 | 6 | 6 | 5 | 6 | 6 | 6 | 6 | 7 | 7 | 7 | 8 | 8 | 7 | 7 | 7 | 8 | 7 | 7 | 7 | 8 |
| Maximum wave height (ft) | 10 | 10 | 10 | 10 | 8 | 9 | 8 | 11 | 9 | 8 | 10 | 9 | 9 | 9 | 11 | 9 | 8 | 8 | 8 | 8 | 9 | 10 | 8 | 8 | 9 | 10 | 7 | 9 | 9 | 9 | 8 | 8 | 8 | 9 | 9 | 10 | 11 | 12 | 15 | 11 | 10 | 10 | 10 | 15 | 11 | 11 | 12 | 13 |
| Peak period (s) | 14 | 11 | 13 | 13 | 13 | 11 | 12 | 13 | 11 | 11 | 12 | 12 | 11 | 9 | 13 | 11 | 15 | 11 | 11 | 12 | 11 | 13 | 13 | 11 | 12 | 13 | 13 | 13 | 14 | 13 | 13 | 11 | 11 | 11 | 11 | 6 | 7 | 7 | 7 | 7 | 8 | 8 | 8 | 9 | 9 | 9 | 9 | 9 |
| Average period (s) | 12 | 10 | 11 | 10 | 10 | 10 | 11 | 10 | 10 | 11 | 11 | 10 | 10 | 10 | 10 | 9 | 9 | 9 | 9 | 9 | 9 | 10 | 9 | 8 | 8 | 8 | 8 | 8 | 9 | 8 | 8 | 8 | 8 | 8 | 7 | 7 | 7 | 7 | 7 | 8 | 8 | 8 | 8 | 8 | 8 | 8 | 8 | 8 |
| Mean period Tm02 (s) | 8 | 8 | 8 | 8 | 7 | 7 | 7 | 8 | 7 | 7 | 7 | 7 | 7 | 7 | 6 | 6 | 6 | 6 | 6 | 6 | 6 | 6 | 6 | 6 | 6 | 6 | 5 | 5 | 6 | 6 | 6 | 5 | 5 | 5 | 5 | 6 | 6 | 6 | 6 | 6 | 6 | 6 | 6 | 6 | 6 | 6 | 6 | 6 |
| Peak wave direction | W | W | W | W | W | W | W | W | W | W | W | W | W | WSW | W | WSW | W | W | WSW | WSW | W | W | W | WSW | W | W | W | W | W | W | W | WSW | WSW | WSW | W | SW | SW | WSW | WSW | WSW | WSW | WSW | WSW | WSW | WSW | WSW | WSW | WSW |
| Directional spread (°) | 21.6 | 17.5 | 17.7 | 19.6 | 23.2 | 23.3 | 18.6 | 23.5 | 21.7 | 20.3 | 19.6 | 19.6 | 19.3 | 18.9 | 20.9 | 20.8 | 25.0 | 27.0 | 23.0 | 19.0 | 22.3 | 19.8 | 21.3 | 20.9 | 24.0 | 26.5 | 23.7 | 24.5 | 23.4 | 28.0 | 24.8 | 22.5 | 24.0 | 23.2 | 27.4 | 24.9 | 23.1 | 21.3 | 20.1 | 19.8 | 23.1 | 19.3 | 26.1 | 19.8 | 21.5 | 19.8 | 20.7 | 20.2 |
| Water temperature(°C) | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - |
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Learn how SurfHog combines, checks and summarizes observations in the data and methodology notes.