St Mary's Sound wave buoy daily averages for Jul 2026
Daily averages from the St Mary's Sound wave buoy for Jul 2026, including available wave height, period, direction, wind and sea temperature data.
Average Wave Height
Average Wave period
Average Wave Direction
Average Water temperature
Compared With Previous Julys
Historical baseline from 9,539 observations across 10 years.
- Wave Height
- 2ft
- 0.5ft below average
- Historical average 2.5ft
- Wave Period
- 4.8s
- 1s below average
- Historical average 5.8s
- Water Temperature
- 16°C
- 0.7°C above average
- Historical average 15.3°C
Chart showing grouped wave observations for St Mary's Sound. Use the table on this page for a text version of the same measurements. Click a day to show hourly observations for that day.
Sorry, there is no wave data for Wed, Jul 1, 2026
About St Mary's Sound wave buoy
St Mary's Sound station lies between the islands of St Mary's and St Agnes in the Isles of Scilly. The National Network first deployed its Datawell Directional WaveRider in May 2014 to measure the exposed nearshore wave climate around the archipelago. The station reports wave height, period and direction together with sea temperature.