St Mary's Sound wave buoy observations on Sat, Dec 23, 2023

Hourly readings from the St Mary's Sound wave buoy for Sat, Dec 23, 2023, including available wave height, period, direction, wind and sea temperature data.

Last observation shown Sat, Dec 23, 2023, 23:30

Oldest observation available Sun, Jul 3, 2016

Daily means for Dec 2023

Period Summary

Hog Says

48 wave-buoy observations were recorded during the day. Typical wave height was 4 ft (10th–90th percentile 3.5–4.7 ft), while mean average of more than one wave period type was 7.8 seconds (10th–90th percentile 6.1–10.3 seconds). Mean water temperature was 11.8°C. 1 of 192 checked values (0.5%) were excluded by quality control.

Generated only from the observations and comparisons shown on this page.

About St Mary's Sound wave buoy

St Mary's Sound station lies between St Mary's and St Agnes in the Isles of Scilly. The National Network first deployed a Datawell Directional WaveRider here in May 2014, establishing a nearshore record for an archipelago exposed to Atlantic swell and important to local navigation and coastal management.

Its current data source reports wave height, wave period, wave direction, directional spread, wave power and sea temperature.

St Mary's Sound wave buoy hourly observations Sat, Dec 23, 2023Last observation shown Sat, Dec 23, 2023
Metric	Sat 00:00	Sat 00:30	Sat 01:00	Sat 01:30	Sat 02:00	Sat 02:30	Sat 03:00	Sat 03:30	Sat 04:00	Sat 04:30	Sat 05:00	Sat 05:30	Sat 06:00	Sat 06:30	Sat 07:00	Sat 07:30	Sat 08:00	Sat 08:30	Sat 09:00	Sat 09:30	Sat 10:00	Sat 10:30	Sat 11:00	Sat 11:30	Sat 12:00	Sat 12:30	Sat 13:00	Sat 13:30	Sat 14:00	Sat 14:30	Sat 15:00	Sat 15:30	Sat 16:00	Sat 16:30	Sat 17:00	Sat 17:30	Sat 18:00	Sat 18:30	Sat 19:00	Sat 19:30	Sat 20:00	Sat 20:30	Sat 21:00	Sat 21:30	Sat 22:00	Sat 22:30	Sat 23:00	Sat 23:30
Significant wave height (ft)	4	4	3	4	4	4	4	4	4	4	4	4	5	4	4	3	3	3	3	3	3	4	3	4	4	4	4	4	4	4	4	5	5	5	5	5	5	5	4	4	4	4	4	4	4	5	5	5
Maximum wave height (ft)	5	6	5	5	6	5	5	6	6	6	6	7	7	7	6	5	4	4	4	5	5	6	5	6	7	6	6	5	7	6	6	9	7	8	7	7	7	8	8	6	6	6	6	7	6	7	7	7
Peak period (s)	7	8	11	10	8	8	7	-	7	8	5	7	6	7	7	13	13	13	-	13	10	7	7	7	7	7	8	7	8	8	7	8	7	8	8	8	6	6	6	7	8	7	6	6	6	7	7	6
Zero-crossing period (s)	5	5	5	5	5	5	5	5	5	5	5	5	5	6	5	5	5	4	-	5	4	5	5	5	5	5	5	5	5	5	5	5	5	5	5	5	5	5	5	5	4	4	4	4	4	4	5	5
Energy period (s)	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-
Reported period (s)	5	5	5	5	5	5	5	5	5	5	5	5	5	5	5	5	5	4	4	5	4	5	5	5	5	5	5	5	5	5	5	5	5	5	5	5	5	5	5	5	4	4	4	4	4	4	-	5
Wave power, kilowatts per metre	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-
Peak wave direction	NW	NW	N	NNW	W	SW	WSW	-	W	WNW	SW	WSW	SW	SW	WSW	NNW	-	N	-	-	NNW	WNW	WNW	NW	NW	NW	NW	NW	NW	NW	WSW	W	WSW	W	W	WSW	SW	SW	SW	WSW	WSW	SW	SW	WSW	SW	SW	WSW	WSW
Directional spread (°)	46.0	42.0	47.0	49.0	63.0	55.0	49.0	-	45.0	51.0	34.0	46.0	26.0	26.0	35.0	63.0	-	73.0	-	-	44.0	50.0	50.0	50.0	46.0	52.0	46.0	46.0	51.0	63.0	51.0	53.0	46.0	49.0	50.0	48.0	24.0	25.0	24.0	36.0	56.0	44.0	36.0	48.0	46.0	51.0	56.0	46.0
Reported wave direction	NW	NW	N	NNW	W	SW	WSW	WNW	W	WNW	SW	WSW	SW	SW	WSW	NNW	NNE	N	NW	SSE	NNW	WNW	WNW	NW	NW	NW	NW	NW	NW	NW	WSW	W	WSW	W	W	WSW	SW	SW	SW	WSW	WSW	SW	SW	WSW	SW	SW	-	WSW
Water temperature(°C)	11.8	11.8	11.8	11.8	11.8	11.8	11.8	11.8	11.8	11.8	11.8	11.8	11.8	11.8	11.8	11.8	11.8	11.8	11.8	11.8	11.8	11.8	11.8	11.8	11.8	11.8	11.8	11.8	11.8	11.8	11.8	11.8	11.8	11.8	11.8	11.8	11.8	11.8	11.8	11.8	11.8	11.8	11.8	11.8	11.8	11.8	11.8	11.8

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

Learn how SurfHog combines, checks and summarizes observations in the data and methodology notes.

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