St Mary's Sound wave buoy monthly averages for 2019 last observation shown oldest observation available
Average Wave Height
4 ft
0.6 — 32.2 ft
Average Wave period
9 secs
2 — 25 secs
Average Wave Direction
SW
Average Water temperature
13 °C
10.2 — 18.4 °C
| Month | Wave height (ft) | Wave Period (s) | Wave Direction | Water Temp (°C) |
|---|---|---|---|---|
| 6.5 | 10 | SW | 11.4 | |
| 5.2 | 9.8 | SW | 12.6 | |
| 5.1 | 8.9 | SSW | 14.5 | |
| 3.6 | 8.1 | SW | 15.6 | |
| 2.7 | 7.7 | WSW | 16.2 | |
| 2.4 | 7.5 | SW | 15.5 | |
| 3.0 | 7.6 | SSW | 13.4 | |
| 2.7 | 8.8 | WSW | 11.9 | |
| 4.5 | 8.8 | SSW | 10.7 | |
| 4.5 | 10.5 | WSW | 10.4 | |
| 5.8 | 10.1 | SW | 10.4 | |
| 3.2 | 10.2 | W | 11.2 |
Realtime data displayed on this page is from the Regional
Coastal Monitoring Programme.