St Mary's Sound wave buoy daily averages for Mar 2020 last observation shown Data available: to Monthly averages for
Average Wave Height
5 ft
1.8 — 14.6 ft
Average Wave period
9 secs
4 — 18 secs
Average Wave Direction
SW
Average Water temperature
10 °C
9.7 — 9.9 °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) |
|---|---|---|---|---|
| 6 | 7 | E | 9.8 | |
| 5 | 8 | E | 9.8 | |
| 8 | 8 | E | 9.9 | |
| 4 | 6 | E | 10.0 | |
| 3 | 7 | ESE | 10.0 | |
| 3 | 11 | NNW | 10.0 | |
| 3 | 12 | NW | 10.0 | |
| 3 | 14 | N | 9.9 | |
| 4 | 7 | ESE | 9.8 | |
| 6 | 8 | ESE | 9.8 | |
| 13 | 9 | ESE | 9.8 | |
| 8 | 7 | E | 9.8 | |
| 3 | 13 | NNE | 9.9 | |
| 4 | 11 | WNW | 9.9 | |
| 4 | 8 | WSW | 9.8 | |
| 3 | 12 | WNW | 9.8 | |
| 5 | 8 | SW | 9.8 | |
| 5 | 9 | SW | 9.8 | |
| 5 | 10 | WSW | 9.8 | |
| 6 | 10 | W | 9.8 | |
| 6 | 9 | SW | 9.9 | |
| 7 | 9 | SW | 9.8 | |
| 6 | 12 | W | 9.8 | |
| 8 | 10 | SW | 9.8 | |
| 6 | 11 | WSW | 9.8 | |
| 4 | 11 | WSW | 9.7 | |
| 4 | 9 | SW | 9.8 | |
| 5 | 9 | SSW | 9.8 | |
| 4 | 11 | WSW | 9.8 | |
| 6 | 10 | SW | 9.8 | |
| 7 | 10 | SW | 9.9 |
Realtime data displayed on this page is from the
Regional Coastal Monitoring Programme
.