Happisburgh wave buoy daily means for Sep 2025

Daily means from the Happisburgh wave buoy for Sep 2025, including available wave height, period, direction, wind and sea temperature data.

Last observation shown Tue, Sep 30, 2025, 23:30

Data available: Wed, May 9, 2012 to Fri, Aug 21, 2026

Monthly means for 2025

Period Summary

Hog Says

1,440 wave-buoy observations covered all 30 days. Typical wave height was 1.4 ft (10th–90th percentile 0.9–4.2 ft), while mean average of more than one wave period type was 6.1 seconds (10th–90th percentile 4–9.5 seconds). Mean water temperature was 16.8°C (10th–90th percentile 15–18.4°C). 9 of 5,727 checked values (0.2%) were excluded by quality control. Across 12 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 6.3 seconds.

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

Typical Significant Wave Height

1.4ft

Mean: 2 ft

P10–P90: 0.9 — 4.2 ft

Recorded extremes

0.5 — 9.6 ft

Mean Observed Wave Period

6.1secs

P10–P90: 4 — 9.5secs

Recorded extremes

1.7 — 14.3secs

Observed Wave Direction

Circular concentration: 80%

Mean Water Temperature

16.8°C

P10–P90: 15 — 18.4°C

Recorded extremes

14.8 — 18.6°C

Compared With Previous Septembers

Historical baseline from 15,870 observations across 12 years.

Wave Height: 2ft; 0.2ft below mean; Historical mean 2.198ft
Wave Period: 6.1s; 0.2s below mean; Historical mean 6.3s
Water Temperature: 16.8°C; 0.1°C above mean; Historical mean 16.7°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 Sep 2025Last observation shown Sep 2025
Metric	Sep 1	Sep 2	Sep 3	Sep 4	Sep 5	Sep 6	Sep 7	Sep 8	Sep 9	Sep 10	Sep 11	Sep 12	Sep 13	Sep 14	Sep 15	Sep 16	Sep 17	Sep 18	Sep 19	Sep 20	Sep 21	Sep 22	Sep 23	Sep 24	Sep 25	Sep 26	Sep 27	Sep 28	Sep 29	Sep 30
Mean significant wave height (ft)	1	1	2	1	1	2	3	1	1	2	1	1	1	1	2	3	2	1	1	1	6	5	4	4	5	4	2	1	1	1
Mean peak period (s)	5	5	7	6	4	4	6	6	5	5	5	5	6	4	6	6	8	9	9	10	8	8	7	6	7	7	7	5	4	4
Mean zero-crossing period (s)	3	3	4	4	4	3	4	4	3	4	4	4	4	3	4	4	5	4	4	5	5	5	4	4	4	4	4	4	3	4
Mean peak wave direction	Econcentration 97%	Econcentration 84%	Econcentration 99%	Econcentration 82%	Nconcentration 95%	Econcentration 84%	Econcentration 99%	ENEconcentration 99%	ENEconcentration 93%	Econcentration 99%	ENEconcentration 79%	NEconcentration 86%	Econcentration 98%	ENEconcentration 71%	NEconcentration 69%	Nconcentration 92%	NNEconcentration 94%	NNEconcentration 99%	NNEconcentration 91%	NNEconcentration 85%	Nconcentration 90%	NNEconcentration 99%	NNEconcentration 99%	NEconcentration 97%	ENEconcentration 99%	ENEconcentration 99%	NEconcentration 99%	ENEconcentration 94%	NNEconcentration 95%	NEconcentration 98%
Mean directional spread (°)	27.4	33.6	23.8	32.3	36.0	32.2	19.6	24.6	34.2	22.4	38.1	42.6	30.3	32.4	37.4	25.8	30.2	38.1	43.8	41.3	22.0	25.3	27.7	28.8	21.8	22.4	21.5	25.6	25.7	31.5
Mean water temperature(°C)	18.5	18.4	18.4	18.3	18.2	18.1	18.2	18.2	18.1	18.0	17.8	17.5	17.2	17.0	16.8	16.4	16.3	16.4	16.6	16.7	16.4	16.0	15.7	15.5	15.3	15.1	15.0	14.9	14.8	14.9

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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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