St Mary's Sound wave buoy monthly averages for 2021 last observation shown oldest observation available Wave buoy icon

Average Wave Height

4 ft
2.2 — 8.2 ft

Average Wave period

5 secs
4.3 — 6 secs

Average Wave Direction

SW

Average Water temperature

13 °C
10 — 15.8 °C
St Mary's Sound wave buoy monthly averages 2021 last observation shown Dec 2021
Month Wave height (ft) Wave Period (s) Wave Direction Water Temp (°C)
5.7 5.2 SSW 11.9
3.0 4.9 W 13.2
4.3 5 SW 14.4
2.8 4.8 SW 15.8
2.5 4.3 SW 15.5
2.5 4.4 SW 15.3
2.2 4.6 WNW 13.2
4.2 5 SW 11.2
3.2 4.4 ESE 10.5
3.9 5 WSW 10.2
8.2 6 SSW 10.0
4.7 5.2 SSW 10.3
Realtime data displayed on this page is from the Regional Coastal Monitoring Programme.

› Wave Buoy List