Bracklesham Bay wave buoy daily means for Apr 2009

Daily means from the Bracklesham 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: Fri, Aug 22, 2008 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 1.4 ft (10th–90th percentile 0.8–2.6 ft), while mean average of more than one wave period type was 8.6 seconds (10th–90th percentile 4.1–11.5 seconds). Mean water temperature was 10.8°C (10th–90th percentile 9.2–12.3°C). 16 of 5,685 checked values (0.3%) were excluded by quality control.

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

Typical Significant Wave Height

1.4ft

Mean: 1.6 ft

P10–P90: 0.8 — 2.6 ft

Recorded extremes

0.4 — 8.5 ft

Available for 719 of 720 hourly samples

Mean Observed Wave Period

8.6secs

P10–P90: 4.1 — 11.5secs

Recorded extremes

1.8 — 20secs

Available for 717 of 720 hourly samples

Observed Wave Direction

SSW

Circular concentration: 97%

Mean Water Temperature

10.8°C

P10–P90: 9.2 — 12.3°C

Recorded extremes

8.1 — 13.2°C

Available for 718 of 720 hourly samples

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 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	1	1	2	2	1	2	4	2	2	2	1	1	1	2	2	1	1	1	1	1	1	1	2	3	2	3	2	1	2
Mean maximum wave height (ft)	1	2	2	3	2	2	3	6	3	3	2	2	1	2	3	2	2	2	2	1	2	2	1	3	4	3	5	3	2	3
Mean peak period (s)	7	10	10	7	11	10	8	8	7	10	10	9	9	-	13	9	8	8	7	10	11	11	9	5	6	7	6	8	8	5
Mean zero-crossing period (s)	4	4	4	3	5	4	4	5	4	5	6	5	5	6	5	4	4	5	3	5	5	4	4	3	4	4	4	5	4	4
Mean energy period (s)	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-
Mean wave power, kilowatts per metre	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-
Mean peak wave direction	SSWconcentration 91%	SSWconcentration 97%	SSWconcentration 100%	SWconcentration 99%	SSWconcentration 99%	SSWconcentration 99%	SSWconcentration 100%	SSWconcentration 100%	SSWconcentration 99%	SSWconcentration 100%	SSWconcentration 99%	SSWconcentration 99%	SSWconcentration 99%	SSWconcentration 99%	SSWconcentration 100%	SSWconcentration 99%	SWconcentration 95%	SWconcentration 100%	SSWconcentration 91%	SSWconcentration 99%	SSWconcentration 100%	SSWconcentration 100%	SSWconcentration 96%	Sconcentration 95%	SSWconcentration 92%	SSWconcentration 100%	SWconcentration 99%	SSWconcentration 100%	SSWconcentration 99%	SSWconcentration 96%
Mean directional spread (°)	35.6	32.3	25.7	21.9	23.5	27.1	25.1	21.1	25.2	24.3	22.3	27.0	26.3	29.1	26.5	23.3	26.2	28.8	29.8	26.3	24.0	29.7	28.3	25.7	22.9	24.5	21.8	25.3	25.8	24.2
Mean water temperature(°C)	8.7	8.9	9.0	9.2	9.5	9.7	9.9	10.1	10.2	10.1	10.0	10.1	10.3	10.7	10.9	11.2	11.4	11.2	11.1	11.5	11.9	12.1	12.3	12.0	12.1	12.2	12.0	11.9	11.9	12.1

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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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