St Mary's Sound wave buoy daily averages for Apr 2018 last observation shown oldest observation available Monthly averages for
Average Wave Height
5 ft
0.6 — 14.8 ft
Average Wave period
10 secs
4 — 25 secs
Average Wave Direction
WSW
Average Water temperature
10 °C
9.2 — 10.9 °C
| Day | Wave height (ft) | Wave Period (s) | Wave Direction | Water Temp (°C) |
|---|---|---|---|---|
| 2.4 | 6.7 | E | 10.5 | |
| 2.4 | 7.4 | SE | 10.5 | |
| 2.5 | 8.2 | SW | 10.5 | |
| 6.5 | 8.3 | SSW | 10.5 | |
| 3.4 | 10.4 | NW | 10.5 | |
| 3.3 | 8.6 | W | 10.4 | |
| 3.7 | 5.8 | SW | 10.4 | |
| 2.5 | 8.7 | WNW | 10.3 | |
| 1.8 | 9.8 | NW | 10.3 | |
| 1.9 | 10.7 | NW | 10.3 | |
| 2.8 | 10.7 | W | 10.3 | |
| 4.6 | 10.3 | WSW | 10.3 | |
| 7.8 | 10 | SW | 10.2 | |
| 12.0 | 10.3 | SW | 10.0 | |
| 7.9 | 9.4 | SW | 10.0 | |
| 8.6 | 9.5 | SSW | 10.0 | |
| 3.6 | 11.1 | W | 9.9 | |
| 2.5 | 13.6 | NNW | 9.9 | |
| 3.3 | 10 | ENE | 9.9 | |
| 2.5 | 12.5 | WNW | 10.2 | |
| 3.6 | 11.9 | NW | 9.8 | |
| 2.6 | 10 | W | 9.8 | |
| 3.9 | 9.3 | SW | 9.7 | |
| 5.8 | 10 | SW | 9.7 | |
| 9.7 | 9.7 | SSW | 9.5 | |
| 5.9 | 8.5 | SSW | 9.5 | |
| 8.1 | 10 | SSW | 9.5 | |
| 7.2 | 8.3 | SSW | 9.4 | |
| 8.2 | 9.8 | SSW | 9.3 | |
| 5.4 | 7.1 | S | 9.3 |
Realtime data displayed on this page is from the Regional
Coastal Monitoring Programme.