Bracklesham Bay wave buoy daily means for Mar 2011

Daily means from the Bracklesham Bay wave buoy for Mar 2011, including available wave height, period, direction, wind and sea temperature data.

Last observation shown Thu, Mar 31, 2011, 23:30

Data available: Fri, Aug 22, 2008 to Sat, Aug 22, 2026

Monthly means for 2011

Period Summary

Hog Says

1,486 wave-buoy observations covered all 31 days. Typical wave height was 1.2 ft (10th–90th percentile 0.7–2.5 ft), while mean average of more than one wave period type was 8 seconds (10th–90th percentile 3.8–14.3 seconds). Mean water temperature was 7.3°C (10th–90th percentile 6–9°C). 17 of 5,678 checked values (0.3%) were excluded by quality control. Across 1 comparable year, mean wave height was below the same-month mean of 2.1 ft and mean wave period was above the same-month mean of 7.9 seconds.

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

Typical Significant Wave Height

1.2ft

Mean: 1.5 ft

P10–P90: 0.7 — 2.5 ft

Recorded extremes

0.4 — 6.4 ft

Mean Observed Wave Period

8secs

P10–P90: 3.8 — 14.3secs

Recorded extremes

1.7 — 20secs

Available for 741 of 743 hourly samples

Observed Wave Direction

SSW

Circular concentration: 87%

Mean Water Temperature

7.3°C

P10–P90: 6 — 9°C

Recorded extremes

5.4 — 9.8°C

Available for 742 of 743 hourly samples

Compared With Previous Marchs

Historical baseline from 1,481 observations across 1 year.

Wave Height: 1.5ft; 0.6ft below mean; Historical mean 2.067ft
Wave Period: 8s; 0.1s above mean; Historical mean 7.9s
Water Temperature: 7.3°C; 1.2°C above mean; Historical mean 6.1°C

Show 10th–90th percentile ranges

About Bracklesham Bay wave buoy

Bracklesham Bay is a Channel Coastal Observatory National Network wave station off the West Sussex coast. Its nearshore position records conditions entering the broad bay between Selsey and Hayling Island, supporting coastal management along an exposed beach frontage west of Chichester Harbour.

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

Bracklesham Bay wave buoy daily means Mar 2011Last observation shown Mar 2011
Metric	Mar 1	Mar 2	Mar 3	Mar 4	Mar 5	Mar 6	Mar 7	Mar 8	Mar 9	Mar 10	Mar 11	Mar 12	Mar 13	Mar 14	Mar 15	Mar 16	Mar 17	Mar 18	Mar 19	Mar 20	Mar 21	Mar 22	Mar 23	Mar 24	Mar 25	Mar 26	Mar 27	Mar 28	Mar 29	Mar 30	Mar 31
Mean significant wave height (ft)	1	1	1	1	1	1	2	1	3	QC rejected	2	2	2	1	1	1	1	1	1	1	1	1	1	1	1	1	1	2	2	2	5
Mean maximum wave height (ft)	2	2	2	2	2	2	2	2	4	7	3	2	2	2	2	1	1	2	2	1	1	1	1	2	1	1	2	2	3	3	7
Mean peak period (s)	9	-	11	6	5	5	5	9	6	6	7	7	6	11	5	3	8	10	8	7	9	9	5	4	4	14	14	14	15	9	7
Mean zero-crossing period (s)	4	4	3	4	4	3	3	3	4	4	4	3	4	4	3	3	3	4	4	4	5	5	4	3	3	4	4	6	5	4	4
Mean energy period (s)	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-
Mean wave power, kilowatts per metre	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-
Mean peak wave direction	SSWconcentration 51%	SSWconcentration 98%	SSWconcentration 58%	Sconcentration 75%	Sconcentration 97%	SSEconcentration 95%	Sconcentration 96%	SSWconcentration 92%	SWconcentration 99%	SWconcentration 99%	SSWconcentration 99%	Sconcentration 95%	Sconcentration 96%	SSWconcentration 95%	SSEconcentration 97%	Variableconcentration 7%	SSWconcentration 90%	SSWconcentration 78%	SSWconcentration 99%	SSWconcentration 98%	SSWconcentration 99%	SSWconcentration 99%	Sconcentration 97%	Sconcentration 97%	Sconcentration 96%	SSWconcentration 100%	SSWconcentration 99%	SSWconcentration 100%	SSWconcentration 99%	SSWconcentration 100%	SWconcentration 100%
Mean directional spread (°)	32.2	37.7	36.1	28.3	27.7	28.2	26.0	34.9	21.8	19.7	22.4	26.3	25.0	30.3	28.9	30.2	34.6	33.3	30.6	35.1	31.8	32.5	28.1	28.5	30.6	36.0	30.4	23.7	26.5	22.7	19.3
Mean water temperature(°C)	6.6	6.5	6.3	6.0	5.9	6.0	6.0	6.0	6.2	6.4	6.7	6.9	7.1	7.1	7.3	7.5	7.6	7.5	7.2	7.3	7.5	7.8	8.0	8.2	8.6	8.8	8.9	8.9	9.0	9.0	9.2

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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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