Chesil wave buoy daily means for Dec 2009

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

Last observation shown Thu, Dec 31, 2009, 23:00

Data available: Fri, Dec 22, 2006 to Sat, Aug 22, 2026

Monthly means for 2009

Period Summary

Hog Says

1,487 wave-buoy observations covered all 31 days. Typical wave height was 3.4 ft (10th–90th percentile 1.4–7.5 ft), while mean average of more than one wave period type was 9.9 seconds (10th–90th percentile 5.1–15.4 seconds). Mean water temperature was 9.9°C (10th–90th percentile 8.5–11.2°C). 16 of 5,872 checked values (0.3%) were excluded by quality control.

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

Typical Significant Wave Height

3.4ft

Mean: 4 ft

P10–P90: 1.4 — 7.5 ft

Recorded extremes

0.8 — 12.6 ft

Available for 743 of 744 hourly samples

Mean Observed Wave Period

9.9secs

P10–P90: 5.1 — 15.4secs

Recorded extremes

2.7 — 22.2secs

Available for 739 of 744 hourly samples

Observed Wave Direction

Circular concentration: 93%

Mean Water Temperature

9.9°C

P10–P90: 8.5 — 11.2°C

Recorded extremes

8 — 11.7°C

Available for 742 of 744 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 Dec 2009Last observation shown Dec 2009
Metric	Dec 1	Dec 2	Dec 3	Dec 4	Dec 5	Dec 6	Dec 7	Dec 8	Dec 9	Dec 10	Dec 11	Dec 12	Dec 13	Dec 14	Dec 15	Dec 16	Dec 17	Dec 18	Dec 19	Dec 20	Dec 21	Dec 22	Dec 23	Dec 24	Dec 25	Dec 26	Dec 27	Dec 28	Dec 29	Dec 30	Dec 31
Mean significant wave height (ft)	4	5	5	4	7	9	9	6	5	4	2	2	2	1	1	2	1	2	2	3	2	2	5	4	4	7	6	3	5	6	3
Mean maximum wave height (ft)	5	8	8	5	11	14	13	9	7	6	3	2	3	2	2	2	2	3	2	5	4	3	7	6	6	11	10	4	8	9	5
Mean peak period (s)	9	7	8	9	8	8	8	8	16	17	14	12	10	7	6	14	16	10	8	5	9	14	10	8	7	7	8	12	12	13	12
Mean zero-crossing period (s)	5	5	5	5	5	6	6	5	6	6	7	7	6	5	4	5	4	5	4	4	5	4	5	5	4	5	5	5	7	8	8
Mean energy period (s)	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-
Mean wave power, kilowatts per metre	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-
Mean peak wave direction	SSWconcentration 87%	SWconcentration 99%	SWconcentration 97%	SWconcentration 99%	SWconcentration 100%	SWconcentration 100%	SWconcentration 100%	SWconcentration 100%	SSWconcentration 98%	SWconcentration 99%	SWconcentration 98%	SWconcentration 94%	SWconcentration 92%	Sconcentration 96%	Sconcentration 92%	Sconcentration 89%	SSWconcentration 85%	SWconcentration 77%	SWconcentration 94%	WSWconcentration 97%	SWconcentration 95%	SSWconcentration 92%	SWconcentration 99%	SWconcentration 99%	SWconcentration 97%	SWconcentration 100%	SWconcentration 100%	SWconcentration 92%	SWconcentration 100%	SWconcentration 100%	SWconcentration 99%
Mean directional spread (°)	42.2	19.9	22.2	26.7	17.1	16.5	16.6	19.0	32.6	36.9	37.2	52.1	40.0	38.9	34.4	58.9	66.0	43.2	43.0	24.9	42.2	53.7	34.0	25.5	27.3	17.9	17.1	49.9	29.1	17.0	21.1
Mean water temperature(°C)	11.4	11.3	11.3	11.1	11.2	11.1	10.9	11.0	11.1	11.1	11.1	10.8	10.6	10.3	10.1	10.1	10.0	9.6	9.2	9.0	9.0	8.9	8.9	8.7	8.8	8.5	8.1	8.4	8.5	8.6	8.5

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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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