St Mary's Sound wave
buoy daily averages for Jun 2024 last observation shown
oldest observation available
Monthly averages for 
Average Wave Height
2 ft
0.8 — 8.2 ft
Average Wave period
5 secs
3.2 — 5.8 secs
Average Wave Direction
WNW
Average Water temperature
14 °C
13.4 — 14.3 °C
| Day | Wave height (ft) | Wave Period (s) | Wave Direction | Water Temp (°C) |
|---|---|---|---|---|
| 1.6 | 4.5 | WNW | 14.1 | |
| 2.2 | 4.4 | W | 14.2 | |
| 2.5 | 5.1 | NNW | 14.1 | |
| 2.6 | 4.6 | NW | 13.9 | |
| 1.5 | 5.2 | WNW | 14.2 | |
| 1.5 | 5.4 | WNW | 14.1 | |
| 2.0 | 5.5 | W | 14.0 | |
| 2.4 | 5.3 | W | 14.0 | |
| 3.5 | 5 | WSW | 13.9 | |
| 3.0 | 4.2 | SW | 13.9 | |
| 1.5 | 4.6 | ESE | 14.0 | |
| 1.8 | 4 | E | 14.2 | |
| 1.8 | 3.2 | ENE | 14.3 | |
| 2.6 | 5.5 | SSW | 14.1 | |
| 3.2 | 5 | SW | 14.0 | |
| 4.7 | 5 | WSW | 13.8 | |
| 5.4 | 5.3 | SW | 13.7 | |
| 8.2 | 5.8 | SSW | 13.6 | |
| 1.0 | 3.8 | W | 13.7 | |
| 1.2 | 4.2 | NNE | 13.7 | |
| 1.9 | 4.1 | NNW | 13.6 | |
| 1.6 | 3.9 | NNW | 13.5 | |
| 1.4 | 4.1 | NW | 13.5 | |
| 1.3 | 4.1 | WNW | 13.5 | |
| 1.3 | 4 | NW | 13.4 | |
| 1.5 | 4.3 | NW | 13.5 | |
| 1.6 | 4 | NW | 13.5 | |
| 0.8 | 4.5 | NW | 13.6 | |
| 1.1 | 3.9 | NE | 13.6 | |
| 1.3 | 3.6 | E | 13.7 |
Realtime data displayed on this page is from the Regional
Coastal Monitoring Programme.