St Mary's Sound wave buoy daily averages for Apr 2018 last observation shown Data available: to Monthly averages for
Average Wave Height
5 ft
0.6 — 14.8 ft
Average Wave period
10 secs
4 — 25 secs
Average Wave Direction
WSW
Average Water temperature
10 °C
9.2 — 10.9 °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) |
|---|---|---|---|---|
| 2 | 7 | E | 10.5 | |
| 2 | 7 | SE | 10.5 | |
| 3 | 8 | SW | 10.5 | |
| 7 | 8 | SSW | 10.5 | |
| 3 | 10 | NW | 10.5 | |
| 3 | 9 | W | 10.4 | |
| 4 | 6 | SW | 10.4 | |
| 3 | 9 | WNW | 10.3 | |
| 2 | 10 | NW | 10.3 | |
| 2 | 11 | NW | 10.3 | |
| 3 | 11 | W | 10.3 | |
| 5 | 10 | WSW | 10.3 | |
| 8 | 10 | SW | 10.2 | |
| 12 | 10 | SW | 10.0 | |
| 8 | 9 | SW | 10.0 | |
| 9 | 10 | SSW | 10.0 | |
| 4 | 11 | W | 9.9 | |
| 3 | 14 | NNW | 9.9 | |
| 3 | 10 | ENE | 9.9 | |
| 3 | 13 | WNW | 10.2 | |
| 4 | 12 | NW | 9.8 | |
| 3 | 10 | W | 9.8 | |
| 4 | 9 | SW | 9.7 | |
| 6 | 10 | SW | 9.7 | |
| 10 | 10 | SSW | 9.5 | |
| 6 | 9 | SSW | 9.5 | |
| 8 | 10 | SSW | 9.5 | |
| 7 | 8 | SSW | 9.4 | |
| 8 | 10 | SSW | 9.3 | |
| 5 | 7 | S | 9.3 |
Realtime data displayed on this page is from the
Regional Coastal Monitoring Programme
.