St Mary's Sound wave
buoy daily averages for Jan 2017 last observation shown
oldest observation available
Monthly averages for 
Average Wave Height
5 ft
2.1 — 12.9 ft
Average Wave period
8 secs
5.5 — 12.3 secs
Average Wave Direction
SW
Average Water temperature
11 °C
10.6 — 11.6 °C
| Day | Wave height (ft) | Wave Period (s) | Wave Direction | Water Temp (°C) |
|---|---|---|---|---|
| 7.7 | 9.4 | SSW | 10.8 | |
| 5.2 | 7.6 | SSW | 10.7 | |
| 5.7 | 6.4 | SSW | 10.7 | |
| 4.2 | 9.1 | SW | 10.7 | |
| 9.3 | 9.1 | S | 10.6 | |
| 12.9 | 9 | S | 10.7 | |
| 7.9 | 6.9 | SSW | 10.7 | |
| 4.5 | 5.5 | SSW | 10.7 | |
| 2.4 | 10 | WSW | 10.8 | |
| 3.0 | 12.3 | WSW | 10.8 | |
| 3.3 | 12.3 | WSW | 10.9 | |
| 5.1 | 6.4 | ESE | 10.9 | |
| 4.5 | 6.3 | ESE | 11.0 | |
| 3.1 | 5.7 | SE | 11.0 | |
| 2.6 | 8 | W | 11.1 | |
| 2.1 | 6.9 | NNW | 11.1 | |
| 2.7 | 6.5 | NW | 11.1 | |
| 3.2 | 8.7 | NW | 11.1 | |
| 4.4 | 9 | NW | 11.1 | |
| 3.9 | 9.2 | WNW | 11.3 | |
| 3.7 | 7.8 | WNW | 11.4 | |
| 3.7 | 8.3 | WNW | 11.4 | |
| 5.4 | 5.9 | S | 11.4 | |
| 3.2 | 9 | SSW | 11.4 | |
| 3.7 | 10.9 | SSW | 11.4 | |
| 3.6 | 8.6 | SSE | 11.4 | |
| 5.8 | 7.6 | E | 11.5 | |
| 3.4 | 9.8 | NW | 11.6 |
Realtime data displayed on this page is from the Regional
Coastal Monitoring Programme.