Chesil wave buoy daily means for Apr 2009

Daily means from the Chesil 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, Dec 22, 2006 to Sat, Aug 22, 2026

Monthly means for 2009

Period Summary

Hog Says

1,419 wave-buoy observations covered all 30 days. Typical wave height was 2.1 ft (10th–90th percentile 1.2–4.1 ft), while mean average of more than one wave period type was 8.6 seconds (10th–90th percentile 5.5–11.5 seconds). Mean water temperature was 9.9°C (10th–90th percentile 9.1–10.8°C). 9 of 5,596 checked values (0.2%) were excluded by quality control.

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

Typical Significant Wave Height

2.1ft

Mean: 2.5 ft

P10–P90: 1.2 — 4.1 ft

Recorded extremes

0.7 — 8.6 ft

Available for 708 of 711 hourly samples

Mean Observed Wave Period

8.6secs

P10–P90: 5.5 — 11.5secs

Recorded extremes

3.1 — 16.7secs

Available for 708 of 711 hourly samples

Observed Wave Direction

Circular concentration: 96%

Mean Water Temperature

9.9°C

P10–P90: 9.1 — 10.8°C

Recorded extremes

8.7 — 11.7°C

Available for 707 of 711 hourly samples

Show 10th–90th percentile ranges

About Chesil wave buoy

Chesil is a Channel Coastal Observatory National Network wave station off Dorset's exposed Jurassic Coast. It records waves approaching Chesil Beach and the western side of Portland, providing a nearshore reference for the long shingle barrier and the communities and infrastructure behind it.

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

Chesil 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	2	3	2	2	4	6	4	4	3	2	2	2	2	2	2	2	1	1	2	2	1	2	4	4	4	3	2	3
Mean maximum wave height (ft)	1	2	2	4	3	3	6	9	5	6	4	3	2	4	3	3	4	3	2	2	3	2	2	3	7	6	6	4	3	5
Mean peak period (s)	12	9	10	6	10	10	8	8	7	10	10	10	8	12	12	8	8	8	7	10	11	11	11	7	6	7	6	8	7	6
Mean zero-crossing period (s)	5	6	6	4	6	4	4	5	4	6	5	5	4	5	6	5	6	6	5	7	5	6	5	4	4	5	4	5	4	4
Mean energy period (s)	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-
Mean wave power, kilowatts per metre	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-
Mean peak wave direction	SWconcentration 91%	SSWconcentration 88%	SWconcentration 96%	SWconcentration 100%	SWconcentration 98%	SWconcentration 98%	SWconcentration 100%	SWconcentration 100%	SWconcentration 98%	SWconcentration 100%	SWconcentration 99%	SWconcentration 98%	SWconcentration 99%	SSWconcentration 95%	SWconcentration 96%	SWconcentration 97%	SWconcentration 99%	SWconcentration 99%	SWconcentration 92%	SWconcentration 90%	SWconcentration 93%	SWconcentration 93%	SWconcentration 92%	SSWconcentration 93%	SWconcentration 94%	SWconcentration 99%	SWconcentration 100%	SWconcentration 98%	SWconcentration 97%	SWconcentration 98%
Mean directional spread (°)	59.9	53.4	50.1	27.2	46.6	47.1	24.3	19.2	23.8	23.3	30.9	41.7	39.8	42.8	52.3	42.1	31.5	42.8	53.6	53.3	46.5	45.5	49.9	37.0	20.4	23.0	22.7	31.6	36.3	25.8
Mean water temperature(°C)	8.8	8.9	9.0	9.1	9.2	9.2	9.3	9.6	9.8	9.7	9.7	9.8	9.9	9.9	9.9	10.1	10.1	9.7	9.8	10.4	10.2	10.4	10.3	10.4	10.5	10.7	10.7	10.7	10.8	10.9

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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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