St Mary's Sound wave
buoy daily averages for Mar 2017 last observation shown
oldest observation available
Monthly averages for 
Average Wave Height
5 ft
2.4 — 8.3 ft
Average Wave period
9 secs
5.9 — 13.5 secs
Average Wave Direction
WSW
Average Water temperature
10 °C
10.2 — 10.5 °C
| Day | Wave height (ft) | Wave Period (s) | Wave Direction | Water Temp (°C) |
|---|---|---|---|---|
| 7.2 | 8 | SSW | 10.5 | |
| 7.5 | 9.3 | SSW | 10.4 | |
| 8.3 | 8.5 | SSW | 10.4 | |
| 5.7 | 7.6 | SSW | 10.4 | |
| 5.2 | 5.9 | ESE | 10.3 | |
| 7.7 | 7.8 | ESE | 10.3 | |
| 4.9 | 7.4 | ESE | 10.3 | |
| 5.2 | 7.1 | E | 10.3 | |
| 3.5 | 10.9 | NW | 10.3 | |
| 4.9 | 8.3 | SW | 10.4 | |
| 5.6 | 7.8 | WSW | 10.4 | |
| 5.1 | 7 | SW | 10.4 | |
| 3.9 | 9.5 | WNW | 10.4 | |
| 4.0 | 8.2 | WNW | 10.3 | |
| 3.2 | 10.5 | NW | 10.3 | |
| 2.4 | 13.5 | WNW | 10.4 | |
| 3.0 | 12.6 | WNW | 10.4 | |
| 3.1 | 12.3 | WNW | 10.3 | |
| 3.7 | 10.7 | W | 10.3 | |
| 3.5 | 8.7 | W | 10.3 | |
| 4.0 | 7.7 | SSW | 10.3 | |
| 4.1 | 7.5 | SSW | 10.3 | |
| 4.1 | 9.8 | WSW | 10.3 | |
| 5.6 | 7.7 | SW | 10.2 | |
| 5.2 | 8.6 | SW | 10.2 | |
| 6.1 | 10.2 | W | 10.2 | |
| 6.7 | 9.8 | WSW | 10.2 | |
| 5.8 | 9 | WSW | 10.2 | |
| 7.7 | 7.5 | S | 10.3 | |
| 5.5 | 8.2 | SW | 10.3 | |
| 5.2 | 8.2 | SW | 10.3 |
Realtime data displayed on this page is from the Regional
Coastal Monitoring Programme.