Sandown Bay wave buoy daily means for Jul 2013

Daily means from the Sandown Bay wave buoy for Jul 2013, including available wave height, period, direction, wind and sea temperature data.

Last observation shown Wed, Jul 31, 2013, 23:30

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

Monthly means for 2013

Period Summary

Hog Says

1,261 wave-buoy observations covered 27 of 31 days (87%). Typical wave height was 0.9 ft (10th–90th percentile 0.4–2 ft), while mean average of more than one wave period type was 4.9 seconds (10th–90th percentile 3.2–6.5 seconds). Mean water temperature was 16.9°C (10th–90th percentile 15.2–18.4°C). 10 of 4,971 checked values (0.2%) were excluded by quality control. Across 3 comparable years, mean wave height was below the same-month mean of 1.1 ft and mean wave period was below the same-month mean of 5 seconds.

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

Typical Significant Wave Height

0.9ft

Mean: 1 ft

P10–P90: 0.4 — 2 ft

Recorded extremes

0.2 — 3.5 ft

Available for 627 of 632 hourly samples

Mean Observed Wave Period

4.9secs

P10–P90: 3.2 — 6.5secs

Recorded extremes

1.7 — 12.5secs

Available for 626 of 632 hourly samples

Observed Wave Direction

SSE

Circular concentration: 89%

Mean Water Temperature

16.9°C

P10–P90: 15.2 — 18.4°C

Recorded extremes

14.8 — 20.1°C

Available for 625 of 632 hourly samples

Compared With Previous Julys

Historical baseline from 4,458 observations across 3 years.

Wave Height: 1ft; 0.1ft below mean; Historical mean 1.148ft
Wave Period: 4.9s; 0.1s below mean; Historical mean 5s
Water Temperature: 16.9°C; 0.2°C below mean; Historical mean 17.1°C

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 Jul 2013Last observation shown Jul 2013
Metric	Jul 1	Jul 2	Jul 3	Jul 4	Jul 5	Jul 6	Jul 7	Jul 8	Jul 9	Jul 10	Jul 11	Jul 12	Jul 13	Jul 14	Jul 15	Jul 16	Jul 17	Jul 18	Jul 19	Jul 20	Jul 21	Jul 22	Jul 23	Jul 24	Jul 25	Jul 26	Jul 27	Jul 28	Jul 29	Jul 30	Jul 31
Mean significant wave height (ft)	1	1	2	1	1	1	1	1	1	1	2	2	1	1	0	0	0	1	-	-	-	-	1	1	1	1	1	2	2	3	2
Mean maximum wave height (ft)	2	1	2	2	1	1	1	2	2	2	3	3	1	1	1	1	1	1	-	-	-	-	1	1	1	1	1	3	3	4	2
Mean peak period (s)	4	4	5	5	5	6	5	4	5	5	5	5	4	4	5	5	5	4	-	-	-	-	5	6	5	6	7	4	5	5	5
Mean zero-crossing period (s)	3	3	3	3	4	4	4	3	4	4	4	4	3	3	3	3	3	3	-	-	-	-	3	3	3	4	4	3	3	3	3
Mean energy period (s)	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-
Mean wave power, kilowatts per metre	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-
Mean peak wave direction	Sconcentration 99%	Sconcentration 96%	Sconcentration 99%	Sconcentration 99%	Sconcentration 92%	SSEconcentration 94%	SSEconcentration 93%	SEconcentration 97%	SEconcentration 97%	SEconcentration 98%	SEconcentration 99%	SEconcentration 99%	SSEconcentration 96%	SSEconcentration 94%	SSEconcentration 89%	SSEconcentration 95%	SSEconcentration 93%	ESEconcentration 81%	-	-	-	-	Sconcentration 83%	Sconcentration 93%	Sconcentration 96%	Sconcentration 95%	SSEconcentration 94%	Sconcentration 96%	Sconcentration 98%	Sconcentration 99%	Sconcentration 98%
Mean directional spread (°)	21.7	25.1	21.5	23.1	28.1	32.7	31.7	27.4	25.4	27.6	23.2	25.6	29.7	31.4	29.7	30.2	30.8	31.5	-	-	-	-	33.7	34.2	31.2	31.2	32.1	24.6	21.5	19.5	23.0
Mean water temperature(°C)	15.1	15.0	15.0	15.1	15.3	15.5	15.9	16.0	16.2	16.3	16.4	16.5	16.7	16.9	17.2	17.3	17.5	18.4	-	-	-	-	18.4	18.3	18.3	18.4	18.4	18.4	18.4	18.3	18.2

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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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