St Mary's Sound wave
buoy daily averages for Feb 2018 last observation shown
oldest observation available
Monthly averages for 
Average Wave Height
5 ft
2 — 14.8 ft
Average Wave period
9 secs
4 — 18 secs
Average Wave Direction
W
Average Water temperature
10 °C
8.9 — 10.3 °C
| Day | Wave height (ft) | Wave Period (s) | Wave Direction | Water Temp (°C) |
|---|---|---|---|---|
| 9.3 | 7.9 | ESE | 9.1 | |
| 6.0 | 7.7 | ESE | 9.2 | |
| 9.3 | 8 | ESE | 9.4 | |
| 8.6 | 7.6 | E | 9.5 | |
| 6.5 | 6.9 | ESE | 9.5 | |
| 6.2 | 6.5 | ESE | 9.6 | |
| 4.1 | 7.3 | ESE | 9.7 | |
| 3.5 | 10.5 | N | 9.7 | |
| 3.4 | 11.5 | NW | 9.7 | |
| 2.9 | 11.5 | WNW | 9.7 | |
| 3.7 | 8.7 | W | 9.7 | |
| 4.0 | 7.5 | SW | 9.7 | |
| 5.4 | 7.5 | SW | 9.7 | |
| 6.2 | 8.7 | SW | 9.7 | |
| 8.5 | 7.8 | S | 9.7 | |
| 8.1 | 9.9 | SSW | 9.7 | |
| 4.7 | 9.8 | WNW | 9.8 | |
| 4.6 | 10.1 | WNW | 9.8 | |
| 4.9 | 7.9 | WSW | 9.8 | |
| 4.2 | 9.1 | WNW | 9.8 | |
| 4.8 | 7.7 | SW | 9.9 | |
| 3.1 | 10.3 | N | 9.9 | |
| 3.4 | 8.3 | ENE | 10.0 | |
| 4.3 | 7.6 | ESE | 10.1 | |
| 5.0 | 8 | ENE | 10.1 | |
| 3.5 | 8 | NW | 10.2 | |
| 3.3 | 8.8 | N | 10.2 | |
| 4.5 | 8.8 | NW | 10.3 |
Realtime data displayed on this page is from the Regional
Coastal Monitoring Programme.