St Mary's Sound wave buoy daily averages for Dec 2017 last observation shown oldest observation available Monthly averages for
Average Wave Height
4 ft
1 — 14.8 ft
Average Wave period
9 secs
2 — 17 secs
Average Wave Direction
WSW
Average Water temperature
12 °C
10.9 — 12.2 °C
| Day | Wave height (ft) | Wave Period (s) | Wave Direction | Water Temp (°C) |
|---|---|---|---|---|
| 10.9 | 10.7 | SSW | 11.1 | |
| 9.0 | 9.5 | SW | 11.1 | |
| 6.0 | 8.6 | WSW | 11.0 | |
| 3.6 | 10 | WSW | 11.1 | |
| 4.8 | 10.4 | WSW | 11.1 | |
| 6.9 | 8.6 | SSW | 11.3 | |
| 7.1 | 7.2 | SSW | 11.4 | |
| 3.5 | 6.5 | SW | 11.4 | |
| 2.1 | 9.8 | WSW | 11.4 | |
| 3.0 | 10.6 | WSW | 11.4 | |
| 3.0 | 11.5 | WSW | 11.4 | |
| 2.9 | 11.8 | W | 11.4 | |
| 2.6 | 9.9 | WSW | 11.4 | |
| 3.2 | 7.5 | WSW | 11.4 | |
| 2.7 | 7.2 | WSW | 11.3 | |
| 2.8 | 9.6 | NW | 11.4 | |
| 4.4 | 10 | NW | 11.4 | |
| 5.8 | 8.3 | W | 11.4 | |
| 5.4 | 7.9 | WSW | 11.6 | |
| 4.5 | 10.6 | WSW | 11.6 | |
| 4.9 | 11.3 | WSW | 11.7 | |
| 7.4 | 9.5 | SW | 11.9 | |
| 3.5 | 7.3 | S | 11.9 | |
| 4.0 | 8.8 | W | 12.0 | |
| 6.8 | 9.5 | SW | 12.1 | |
| 6.9 | 6.5 | SSW | 12.1 | |
| 1.7 | 8.2 | SW | 12.1 | |
| 1.2 | 8.7 | SSW | 12.1 | |
| 1.6 | 5.4 | NE | 12.1 | |
| 2.0 | 6.2 | E | 12.1 | |
| 3.0 | 6.9 | ENE | 12.1 |
Realtime data displayed on this page is from the Regional
Coastal Monitoring Programme.