St Mary's Sound wave
buoy daily averages for Mar 2024 last observation shown
oldest observation available
Monthly averages for 
Average Wave Height
6 ft
2.1 — 10.2 ft
Average Wave period
5 secs
4.8 — 6.6 secs
Average Wave Direction
SW
Average Water temperature
11 °C
10.3 — 11.1 °C
| Day | Wave height (ft) | Wave Period (s) | Wave Direction | Water Temp (°C) |
|---|---|---|---|---|
| 5.4 | 5.1 | SE | 10.9 | |
| 5.9 | 5.3 | SSW | 10.8 | |
| 7.8 | 6.1 | SSW | 10.8 | |
| 9.9 | 6.6 | SSW | 10.9 | |
| 6.6 | 5.4 | SW | 10.9 | |
| 4.0 | 5.1 | W | 10.9 | |
| 5.0 | 5 | SSW | 10.9 | |
| 2.9 | 4.9 | WNW | 10.9 | |
| 3.8 | 4.8 | NW | 11.0 | |
| 2.8 | 4.8 | NW | 11.0 | |
| 2.1 | 4.9 | WSW | 11.0 | |
| 3.6 | 5.2 | W | 11.1 | |
| 5.2 | 5.1 | WSW | 11.0 | |
| 4.9 | 5.1 | WSW | 11.0 | |
| 5.1 | 5.4 | SW | 10.9 | |
| 5.0 | 5.1 | SW | 10.9 | |
| 6.1 | 5.7 | SW | 10.8 | |
| 6.2 | 5.1 | SSW | 10.8 | |
| 5.7 | 5.2 | SW | 10.7 | |
| 5.1 | 4.9 | SW | 10.7 | |
| 2.8 | 5.1 | SW | 10.6 | |
| 4.7 | 6.2 | SSW | 10.4 | |
| 6.6 | 5.5 | SE | 10.4 | |
| 10.2 | 5.8 | ESE | 10.4 | |
| 9.3 | 5.6 | SE | 10.4 | |
| 5.0 | 5.1 | WSW | 10.4 | |
| 6.3 | 6.1 | WSW | 10.3 | |
| 9.3 | 5.8 | S | 10.4 | |
| 3.1 | 5.1 | WNW | 10.4 | |
| 4.1 | 5.3 | W | 10.5 | |
| 6.6 | 5.7 | WSW | 10.5 |
Realtime data displayed on this page is from the Regional
Coastal Monitoring Programme.