Sandown Bay wave buoy daily means for Apr 2009

Daily means from the Sandown Bay wave buoy for Apr 2009, including available wave height, period, direction, wind and sea temperature data.

Last observation shown Thu, Apr 30, 2009, 23:30

Data available: Wed, Jul 16, 2003 to Sat, Aug 22, 2026

Monthly means for 2009

Period Summary

Hog Says

1,440 wave-buoy observations covered all 30 days. Typical wave height was 0.9 ft (10th–90th percentile 0.5–2 ft), while mean average of more than one wave period type was 5.7 seconds (10th–90th percentile 3.4–8.7 seconds). Mean water temperature was 9.9°C (10th–90th percentile 8.8–11.1°C). 17 of 5,656 checked values (0.3%) were excluded by quality control.

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

Typical Significant Wave Height

0.9ft

Mean: 1.1 ft

P10–P90: 0.5 — 2 ft

Recorded extremes

0.3 — 5.6 ft

Available for 719 of 720 hourly samples

Mean Observed Wave Period

5.7secs

P10–P90: 3.4 — 8.7secs

Recorded extremes

1.7 — 18.2secs

Available for 715 of 720 hourly samples

Observed Wave Direction

SSE

Circular concentration: 89%

Mean Water Temperature

9.9°C

P10–P90: 8.8 — 11.1°C

Recorded extremes

0 — 11.7°C

Available for 697 of 720 hourly samples

Show 10th–90th percentile ranges

About Sandown Bay wave buoy

Sandown Bay is a Channel Coastal Observatory National Network wave station off the east coast of the Isle of Wight. Its nearshore record represents conditions entering the bay between Culver Down and Dunnose, helping monitor a developed and erosion-sensitive frontage exposed to English Channel seas.

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

Sandown Bay wave buoy daily means Apr 2009Last observation shown Apr 2009
Metric	Apr 1	Apr 2	Apr 3	Apr 4	Apr 5	Apr 6	Apr 7	Apr 8	Apr 9	Apr 10	Apr 11	Apr 12	Apr 13	Apr 14	Apr 15	Apr 16	Apr 17	Apr 18	Apr 19	Apr 20	Apr 21	Apr 22	Apr 23	Apr 24	Apr 25	Apr 26	Apr 27	Apr 28	Apr 29	Apr 30
Mean significant wave height (ft)	1	2	1	1	1	1	1	3	2	1	1	1	1	1	2	1	1	1	2	1	1	1	1	2	2	1	2	1	1	2
Mean maximum wave height (ft)	1	2	1	2	1	1	2	4	2	2	1	1	1	1	2	2	1	1	3	1	1	1	1	3	3	2	3	2	1	2
Mean peak period (s)	5	5	5	4	6	4	5	6	5	8	9	7	7	13	7	4	6	5	5	5	6	6	6	4	5	6	6	7	6	3
Mean zero-crossing period (s)	4	4	4	3	4	3	3	4	3	4	5	4	4	4	3	3	4	3	4	4	4	4	4	3	3	3	4	4	4	3
Mean energy period (s)	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-
Mean wave power, kilowatts per metre	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-
Mean peak wave direction	SEconcentration 89%	ESEconcentration 99%	SEconcentration 96%	Sconcentration 98%	Sconcentration 97%	SEconcentration 87%	Sconcentration 98%	Sconcentration 98%	SSEconcentration 95%	Sconcentration 97%	Sconcentration 98%	Sconcentration 97%	Sconcentration 96%	SSEconcentration 96%	SEconcentration 90%	SSEconcentration 97%	Sconcentration 95%	SEconcentration 85%	ESEconcentration 98%	SEconcentration 95%	SSEconcentration 91%	SSEconcentration 97%	SSEconcentration 93%	SEconcentration 98%	SSEconcentration 88%	Sconcentration 98%	Sconcentration 99%	Sconcentration 97%	Sconcentration 96%	SSEconcentration 97%
Mean directional spread (°)	28.3	25.2	27.3	24.1	28.9	31.0	26.8	24.6	30.8	31.5	31.2	34.0	34.9	34.0	28.3	27.3	28.4	26.5	17.8	27.8	27.1	31.9	32.9	25.4	24.5	26.7	22.9	25.9	30.2	26.6
Mean water temperature(°C)	8.2	8.7	8.7	8.8	8.9	9.0	9.1	9.2	9.2	9.2	9.3	9.4	9.6	9.9	10.0	10.2	10.3	10.3	10.4	10.6	10.8	11.0	11.0	10.8	10.9	11.0	11.0	11.2	11.2	11.3

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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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