Noirmoutier wave buoy observations on Thu, Aug 21, 2025
Hourly readings from the Noirmoutier wave buoy for Thu, Aug 21, 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 2.3 ft (10th–90th percentile 1.8–2.5 ft), while mean peak wave period was 4.8 seconds (10th–90th percentile 3.6–6.4 seconds). Typical calculated wave power was approximately 1 kW/m (10th–90th percentile 0.6–1.4 kW/m), derived from significant wave height and energy period. 1 of 144 checked values (0.7%) were excluded by quality control.
Generated only from the observations and comparisons shown on this page.
Line chart showing wave height, wave period and sea temperature for Noirmoutier. Use the detailed observations table below for the same data in text form.
Sorry, there is no wave data :(
for Thu, Aug 21, 2025
About Noirmoutier wave buoy
Noirmoutier is a CANDHIS directional buoy west of the low-lying island on the Vendée coast, operated within France's national in-situ sea-state observatory. Its position helps distinguish offshore Atlantic forcing from the sheltering and shallow-water effects around Noirmoutier and Bourgneuf Bay.
Its current data source reports wave height, wave period, wave direction, directional spread and sea temperature.
| Metric | ||||||||||||||||||||||||||||||||||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Significant wave height (ft) | 2 | 2 | 2 | 2 | 2 | 3 | 3 | 2 | 2 | 2 | 2 | 2 | 2 | 2 | 2 | 2 | 2 | 2 | 2 | 2 | 2 | 2 | 2 | 2 | 2 | 2 | 2 | 2 | 2 | 2 | 2 | 2 | 2 | 2 | 2 | 2 | 2 | 3 | 3 | 3 | 3 | 2 | 3 | 2 | 2 | 2 | 2 | 2 |
| Maximum wave height (ft) | 3 | 3 | 4 | 4 | 3 | 4 | 4 | 3 | 4 | 4 | 4 | 4 | 4 | 4 | 4 | 3 | 4 | 3 | 4 | 3 | 4 | 3 | 3 | 3 | 3 | 3 | 3 | 3 | 3 | 2 | 3 | 3 | 3 | 3 | 3 | 4 | 4 | 5 | 4 | 4 | 4 | 4 | 4 | 4 | 4 | 4 | 3 | 3 |
| Peak period (s) | 4 | 4 | 4 | 3 | 4 | 4 | 4 | 4 | 3 | 6 | 3 | 7 | 3 | 3 | 6 | 7 | 7 | 3 | 7 | 6 | 4 | 4 | 7 | 6 | 4 | 3 | 4 | 6 | 6 | 6 | 6 | 6 | 6 | 6 | 6 | 4 | 4 | 4 | 5 | 5 | 5 | 5 | 5 | 5 | 5 | 5 | 5 | - |
| Average period (s) | 4 | 4 | 4 | 4 | 4 | 4 | 4 | 4 | 4 | 4 | 4 | 4 | 4 | 4 | 4 | 4 | 4 | 4 | 4 | 4 | 4 | 4 | 5 | 5 | 4 | 4 | 4 | 4 | 4 | 4 | 4 | 4 | 4 | 4 | 4 | 4 | 4 | 4 | 4 | 4 | 5 | 5 | 4 | 5 | 5 | 5 | 5 | 5 |
| Mean period Tm02 (s) | 4 | 4 | 3 | 3 | 3 | 3 | 3 | 3 | 3 | 3 | 3 | 3 | 3 | 3 | 3 | 4 | 3 | 4 | 4 | 4 | 4 | 4 | 4 | 4 | 4 | 3 | 3 | 3 | 3 | 3 | 3 | 3 | 3 | 3 | 3 | 3 | 3 | 4 | 4 | 4 | 4 | 4 | 4 | 4 | 4 | 4 | 4 | 4 |
| Peak wave direction | NNW | NNW | NNW | N | N | N | N | N | NNW | W | NNW | W | N | N | W | W | W | NW | W | W | NW | NW | W | W | NW | NW | NW | W | W | W | W | WSW | W | W | W | WNW | WNW | WNW | WNW | WNW | W | WNW | W | WNW | WNW | WNW | WNW | W |
| Directional spread (°) | 29.5 | 25.3 | 33.0 | 32.2 | 29.6 | 37.5 | 34.8 | 37.3 | 31.6 | 24.1 | 31.3 | 24.6 | 31.0 | 29.9 | 23.3 | 23.1 | 24.8 | 26.6 | 22.0 | 21.2 | 25.3 | 27.9 | 23.6 | 21.3 | 27.2 | 29.2 | 26.3 | 27.0 | 27.7 | 27.3 | 25.3 | 28.0 | 29.1 | 25.6 | 29.7 | 20.5 | 20.1 | 21.3 | 20.1 | 16.9 | 17.0 | 18.0 | 19.1 | 18.7 | 22.2 | 18.4 | 23.9 | 24.6 |
| Water temperature(°C) | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - |
Swipe sideways to see more hours.
Learn how SurfHog combines, checks and summarizes observations in the data and methodology notes.