St Mary's Sound wave buoy daily averages for Dec 2016 last observation shown Sat, Dec 31, 2016, 23:00 Data available: Sun, Jul 3, 2016 to Mon, Mar 16, 2026 Monthly averages for 2016

Average Wave Height

5 ft

1.5 — 9.9 ft

Average Wave period

9 secs

4 — 20 secs

Average Wave Direction

Average Water temperature

12 °C

11.6 — 12.3 °C

About St Mary's Sound wave buoy

St Mary's Sound (CCO station 113) is an inshore coastal wave monitoring site at 49.8912°N, 6.3125°W. It’s part of the UK’s regional Coastal Monitoring / Channel Coastal Observatory network, placed to characterise nearshore wave climate for flood risk, erosion studies, coastal engineering and local forecasting. These stations commonly use a directional wave buoy (often a Datawell Directional WaveRider class) and report significant wave height, wave period (peak/mean) and wave direction; many also report sea temperature and, where fitted, nearby meteorology.

St Mary's Sound wave buoy daily averages Dec 2016 last observation shown Dec 2016
Day	Wave height (ft)	Wave Period (s)	Wave Direction	Water Temp (°C)
Dec 31	2	11	W	11.6
Dec 30	2	12	WSW	11.7
Dec 29	3	10	WNW	11.6
Dec 28	5	6	SE	11.7
Dec 27	4	9	SSW	11.7
Dec 26	4	11	WNW	11.8
Dec 25	5	8	WSW	11.8
Dec 24	5	9	WSW	11.8
Dec 23	6	8	SW	11.9
Dec 22	4	13	WNW	11.9
Dec 21	5	10	W	12.0
Dec 20	3	14	WNW	12.0
Dec 19	3	13	W	12.0
Dec 18	3	12	WNW	12.0
Dec 17	4	13	WSW	12.1
Dec 16	7	10	SW	12.1
Dec 15	6	8	SSW	12.1
Dec 14	7	9	SSW	12.1
Dec 13	5	7	SSW	12.1
Dec 12	4	7	SSW	12.1
Dec 11	4	10	SW	12.2
Dec 10	6	11	SW	12.2
Dec 9	7	10	SW	12.2
Dec 8	6	10	SW	12.1
Dec 7	6	7	SSW	12.1
Dec 6	5	8	SSW	12.1
Dec 5	5	9	S	12.0
Dec 4	8	8	ESE	12.0
Dec 3	7	7	ESE	12.1
Dec 2	4	7	SSE	12.1
Dec 1	3	6	SSE	12.2

Realtime data displayed on this page is from the Regional Coastal Monitoring Programme .

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