St Mary's Sound wave buoy daily averages for Dec 2024 last observation shown Data available: to Monthly averages for
Average Wave Height
4 ft
1.4 — 12.5 ft
Average Wave period
5 secs
3 — 8 secs
Average Wave Direction
WSW
Average Water temperature
12 °C
11.6 — 13 °C
About St Mary's Sound wave buoy
St Mary's Sound (CCO station 113) is an inshore coastal wave monitoring site at 49.8912°N, 6.3125°W. It’s part of the UK’s regional Coastal Monitoring / Channel Coastal Observatory network, placed to characterise nearshore wave climate for flood risk, erosion studies, coastal engineering and local forecasting. These stations commonly use a directional wave buoy (often a Datawell Directional WaveRider class) and report significant wave height, wave period (peak/mean) and wave direction; many also report sea temperature and, where fitted, nearby meteorology.
| Day | Wave height (ft) | Wave Period (s) | Wave Direction | Water Temp (°C) |
|---|---|---|---|---|
| 6 | 5 | SSW | 11.9 | |
| 2 | 5 | WNW | 11.9 | |
| 2 | 7 | WNW | 12.0 | |
| 2 | 6 | W | 11.9 | |
| 3 | 5 | W | 11.9 | |
| 3 | 5 | NW | 12.0 | |
| 3 | 5 | NW | 12.0 | |
| 3 | 5 | W | 12.0 | |
| 4 | 5 | NW | 11.9 | |
| 5 | 5 | NW | 11.8 | |
| 5 | 5 | W | 12.0 | |
| 4 | 5 | SW | 12.0 | |
| 5 | 6 | SW | 12.0 | |
| 10 | 7 | SSW | 12.2 | |
| 9 | 6 | SSW | 12.2 | |
| 3 | 4 | W | 12.1 | |
| 2 | 4 | WNW | 12.1 | |
| 2 | 4 | W | 12.1 | |
| 3 | 5 | SSE | 12.2 | |
| 5 | 5 | ESE | 12.2 | |
| 5 | 5 | ESE | 12.2 | |
| 6 | 5 | ESE | 12.3 | |
| 5 | 5 | E | 12.4 | |
| 5 | 5 | ENE | 12.4 | |
| 7 | 5 | WNW | 12.6 | |
| 6 | 5 | WSW | 12.8 | |
| 6 | 5 | SW | 12.8 | |
| 5 | 5 | SW | 12.8 | |
| 3 | 5 | SW | 12.8 | |
| 4 | 6 | WSW | 12.8 | |
| 6 | 5 | SSW | 12.9 |
Realtime data displayed on this page is from the
Regional Coastal Monitoring Programme
.