Happisburgh wave buoy daily means for Apr 2017

Daily means from the Happisburgh wave buoy for Apr 2017, including available wave height, period, direction, wind and sea temperature data.

Last observation shown Sun, Apr 30, 2017, 23:30

Data available: Wed, May 9, 2012 to Sat, Aug 22, 2026

Monthly means for 2017

Period Summary

Hog Says

1,440 wave-buoy observations covered all 30 days. Typical wave height was 1.6 ft (10th–90th percentile 1–3.1 ft), while mean average of more than one wave period type was 5.3 seconds (10th–90th percentile 3.4–7 seconds). Mean water temperature was 9.7°C (10th–90th percentile 8.9–10.1°C). 6 of 5,749 checked values (0.1%) were excluded by quality control. Across 4 comparable years, mean wave height was below the same-month mean of 2.2 ft and mean wave period was below the same-month mean of 6.5 seconds.

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

Typical Significant Wave Height

1.6ft

Mean: 1.9 ft

P10–P90: 1 — 3.1 ft

Recorded extremes

0.5 — 6.7 ft

Mean Observed Wave Period

5.3secs

P10–P90: 3.4 — 7secs

Recorded extremes

1.7 — 14.3secs

Available for 719 of 720 hourly samples

Observed Wave Direction

ENE

Circular concentration: 63%

Mean Water Temperature

9.7°C

P10–P90: 8.9 — 10.1°C

Recorded extremes

8.3 — 10.7°C

Compared With Previous Aprils

Historical baseline from 5,760 observations across 4 years.

Wave Height: 1.9ft; 0.3ft below mean; Historical mean 2.165ft
Wave Period: 5.3s; 1.2s below mean; Historical mean 6.5s
Water Temperature: 9.7°C; 1.1°C above mean; Historical mean 8.6°C

Show 10th–90th percentile ranges

About Happisburgh wave buoy

Happisburgh is a Channel Coastal Observatory wave station off the northeast Norfolk coast. It supplies a nearshore North Sea record for one of England's most rapidly changing soft-cliff frontages, where communities, beaches and coastal defences are exposed to frequent erosion.

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

Happisburgh wave buoy daily means Apr 2017Last observation shown Apr 2017
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)	2	1	1	1	1	2	1	1	1	2	1	2	2	1	2	2	3	4	3	2	1	2	3	2	3	3	2	2	2	QC rejected
Mean peak period (s)	4	4	4	4	4	6	6	5	4	5	6	5	6	5	5	6	5	6	6	4	4	6	6	6	7	6	6	6	6	6
Mean zero-crossing period (s)	3	3	3	3	3	4	4	4	3	3	4	3	4	4	3	4	4	4	4	3	3	4	4	3	4	4	4	4	4	4
Mean peak wave direction	SSEconcentration 91%	Econcentration 56%	SEconcentration 65%	SEconcentration 37%	NNEconcentration 96%	NEconcentration 96%	NEconcentration 94%	Econcentration 72%	SEconcentration 76%	NEconcentration 76%	ENEconcentration 86%	SEconcentration 83%	NEconcentration 98%	Econcentration 59%	Econcentration 58%	NEconcentration 99%	NEconcentration 99%	NEconcentration 98%	NEconcentration 99%	Sconcentration 85%	Variableconcentration 21%	NEconcentration 99%	ENEconcentration 46%	ESEconcentration 51%	NNEconcentration 99%	NEconcentration 99%	NEconcentration 99%	NEconcentration 98%	ENEconcentration 87%	Econcentration 94%
Mean directional spread (°)	32.7	41.6	40.6	33.9	31.6	38.3	41.9	40.4	39.4	44.1	40.3	48.0	43.6	38.7	42.8	37.8	32.9	27.7	32.4	27.2	39.2	32.6	31.1	40.7	34.0	31.0	38.1	37.9	37.3	27.7
Mean water temperature(°C)	8.7	8.9	8.9	9.0	9.1	9.2	9.2	9.3	9.4	9.6	9.7	9.8	9.8	9.9	9.9	9.9	10.0	10.0	10.1	10.0	10.0	10.1	10.1	10.1	9.9	9.8	9.8	9.8	9.9	10.0

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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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