Start Bay wave buoy daily averages for Dec 2025
Daily averages from the Start Bay wave buoy for Dec 2025, including available wave height, period, direction, wind and sea temperature data.
Period Summary
AI-generated summary. Hog SaysNo wave buoy observations were recorded at Start Bay during December 2025, covering 0 of 31 days. Historical December data across 12 years includes 10,027 observations, with average wave height of 3.2 ft, wave period of 7.3 seconds and water temperature of 11.7°C.
Generated only from the observations and comparisons shown on this page.
Average Wave Height
Average Wave period
Average Wave Direction
Average Water temperature
Compared With Previous Decembers
Historical baseline from 10,027 observations across 12 years.
- Wave Height
- –
- Not enough comparable data
- Historical average 3.2ft
- Wave Period
- –
- Not enough comparable data
- Historical average 7.3s
- Water Temperature
- –
- Not enough comparable data
- Historical average 11.7°C
Chart showing grouped wave observations for Start Bay. Use the table on this page for a text version of the same measurements. To open hourly observations, use a linked day name in the table.
Sorry, there is no wave data for Mon, Dec 1, 2025
About Start Bay wave buoy
Start Bay is a Datawell Directional WaveRider station off the south Devon coast. First deployed in April 2007, it measures waves entering the bay between Start Point and the Dartmouth approaches. Available observations include wave height, period and direction, sea temperature and calculated wave power.