Chesil wave buoy daily means for Jul 2018

Daily means from the Chesil wave buoy for Jul 2018, including available wave height, period, direction, wind and sea temperature data.

Last observation shown Tue, Jul 31, 2018, 23:30

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

Monthly means for 2018

Period Summary

Hog Says

1,488 wave-buoy observations covered all 31 days. Typical wave height was 1 ft (10th–90th percentile 0.6–3 ft), while mean average of more than one wave period type was 8.2 seconds (10th–90th percentile 3.4–14.3 seconds). Mean water temperature was 17.5°C (10th–90th percentile 15.8–18.5°C). 24 of 5,869 checked values (0.4%) were excluded by quality control. Across 8 comparable years, mean wave height was below the same-month mean of 2.3 ft and mean wave period was above the same-month mean of 6.5 seconds.

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

Typical Significant Wave Height

1ft

Mean: 1.6 ft

P10–P90: 0.6 — 3 ft

Recorded extremes

0.5 — 10 ft

Mean Observed Wave Period

8.2secs

P10–P90: 3.4 — 14.3secs

Recorded extremes

1.7 — 20secs

Available for 741 of 744 hourly samples

Observed Wave Direction

SSW

Circular concentration: 83%

Mean Water Temperature

17.5°C

P10–P90: 15.8 — 18.5°C

Recorded extremes

15.5 — 20.4°C

Compared With Previous Julys

Historical baseline from 11,882 observations across 8 years.

Wave Height: 1.6ft; 0.7ft below mean; Historical mean 2.297ft
Wave Period: 8.2s; 1.7s above mean; Historical mean 6.5s
Water Temperature: 17.5°C; 1.2°C above mean; Historical mean 16.3°C

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 Jul 2018Last observation shown Jul 2018
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	1	1	1	1	1	1	1	1	1	1	1	1	1	1	2	2	1	1	1	1	1	1	1	1	2	6	8	5	3
Mean maximum wave height (ft)	1	1	2	2	1	1	1	1	1	1	1	1	1	1	1	1	3	2	2	2	2	2	2	2	1	1	2	10	12	7	4
Mean peak period (s)	9	11	7	8	11	14	14	6	11	6	9	10	14	16	10	8	6	7	8	5	5	5	4	4	4	7	9	7	8	10	8
Mean zero-crossing period (s)	4	5	4	4	4	4	4	5	4	4	4	4	5	4	4	4	3	4	4	3	4	3	3	3	3	4	4	5	5	5	4
Mean energy period (s)	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-
Mean wave power, kilowatts per metre	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-
Mean peak wave direction	Sconcentration 73%	SSWconcentration 82%	Sconcentration 89%	Sconcentration 88%	Sconcentration 86%	SSWconcentration 69%	SSWconcentration 73%	WSWconcentration 97%	Sconcentration 75%	Sconcentration 86%	Sconcentration 84%	SWconcentration 73%	SSWconcentration 68%	Sconcentration 54%	SSWconcentration 81%	SWconcentration 93%	SWconcentration 97%	SSWconcentration 96%	SWconcentration 99%	SWconcentration 91%	SWconcentration 99%	SWconcentration 97%	SWconcentration 99%	SWconcentration 98%	WSWconcentration 89%	SWconcentration 97%	SWconcentration 97%	SWconcentration 99%	SWconcentration 100%	SWconcentration 100%	SWconcentration 100%
Mean directional spread (°)	48.0	66.9	38.5	49.8	59.4	67.2	68.3	52.3	61.0	42.7	61.0	63.4	66.7	70.4	59.1	51.7	36.9	45.8	53.0	37.7	42.2	41.7	37.0	34.5	34.8	56.1	51.7	18.7	18.4	20.1	28.3
Mean water temperature(°C)	15.9	15.7	15.7	15.8	16.2	16.7	16.8	17.3	17.1	17.5	17.9	17.9	17.5	17.8	17.7	17.5	17.4	17.5	17.6	17.5	17.6	17.9	18.3	18.5	18.1	18.4	18.8	18.2	18.3	18.4	18.4

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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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