St Mary's Sound wave buoy daily averages for May 2021last observation shownData available: to Monthly averages for
Average Wave Height
4ft
0.7 — 13.2ft
Average Wave period
5secs
3 — 8secs
Average Wave Direction
SW
Average Water temperature
11°C
10.7 — 12.4°C
Chart showing grouped wave observations for St Mary's Sound. Use the table on this page for a text version of the same measurements.
Sorry, there is no wave data for Sat, May 1, 2021
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) |
|---|---|---|---|---|
| 1 | 5 | SW | 10.8 | |
| 1 | 5 | WSW | 10.9 | |
| 7 | 5 | SW | 10.8 | |
| 4 | 5 | WSW | 10.9 | |
| 2 | 5 | W | 10.9 | |
| 3 | 5 | SSW | 10.9 | |
| 4 | 5 | S | 10.9 | |
| 8 | 6 | SSW | 10.9 | |
| 7 | 5 | SW | 11.0 | |
| 6 | 5 | SW | 11.0 | |
| 5 | 5 | SSW | 11.0 | |
| 3 | 5 | SW | 11.1 | |
| 4 | 6 | SSW | 11.2 | |
| 3 | 5 | SSW | 11.2 | |
| 5 | 5 | SSW | 11.2 | |
| 5 | 5 | SW | 11.3 | |
| 4 | 5 | SW | 11.4 | |
| 3 | 4 | SW | 11.4 | |
| 3 | 4 | WSW | 11.5 | |
| 9 | 6 | SSW | 11.5 | |
| 7 | 6 | SW | 11.5 | |
| 4 | 5 | SW | 11.5 | |
| 6 | 5 | SW | 11.4 | |
| 6 | 6 | SW | 11.4 | |
| 4 | 5 | WSW | 11.4 | |
| 3 | 5 | SW | 11.5 | |
| 2 | 4 | SW | 11.5 | |
| 2 | 5 | W | 11.6 | |
| 2 | 5 | WNW | 11.7 | |
| 3 | 5 | NNE | 11.7 | |
| 3 | 4 | E | 11.8 |
Realtime data displayed on this page is from the Regional Coastal Monitoring Programme.