Lowestoft wave buoy daily means for Apr 2025

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

Last observation shown Wed, Apr 30, 2025, 23:30

Data available: Wed, Apr 20, 2016 to Fri, Aug 21, 2026

Monthly means for 2025

Period Summary

Hog Says

1,429 wave-buoy observations covered all 30 days. Typical wave height was 2 ft (10th–90th percentile 0.6–3.8 ft), while mean average of more than one wave period type was 5.2 seconds (10th–90th percentile 3.9–6.7 seconds). Mean water temperature was 9.6°C (10th–90th percentile 8.5–10.8°C). All 5,703 checked values passed quality control. Across 9 comparable years, mean wave height was below the same-month mean of 2.7 ft and mean wave period was below the same-month mean of 5.6 seconds.

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

Typical Significant Wave Height

2ft

Mean: 2.1 ft

P10–P90: 0.6 — 3.8 ft

Recorded extremes

0.3 — 6.3 ft

Mean Observed Wave Period

5.2secs

P10–P90: 3.9 — 6.7secs

Recorded extremes

1.8 — 9.1secs

Observed Wave Direction

ENE

Circular concentration: 77%

Mean Water Temperature

9.6°C

P10–P90: 8.5 — 10.8°C

Recorded extremes

7.8 — 11.9°C

Compared With Previous Aprils

Historical baseline from 11,840 observations across 9 years.

Wave Height: 2.1ft; 0.6ft below mean; Historical mean 2.657ft
Wave Period: 5.2s; 0.4s below mean; Historical mean 5.6s
Water Temperature: 9.6°C; 0.9°C above mean; Historical mean 8.7°C

Show 10th–90th percentile ranges

About Lowestoft wave buoy

Lowestoft is a Channel Coastal Observatory wave station off the Suffolk coast at Britain's most easterly town. Its North Sea observations provide local context for the harbour approaches, developed seafront and low-lying coastline around Lowestoft and northern Suffolk.

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

Lowestoft wave buoy daily means Apr 2025Last observation shown Apr 2025
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	4	3	2	4	5	3	2	2	3	1	1	1	1	2	4	1	2	3	3	2	2	2	3	2	2	1	1	0	1
Mean maximum wave height (ft)	4	6	5	4	6	8	4	3	4	4	2	2	2	2	3	6	2	2	5	4	3	2	3	5	3	3	2	1	1	1
Mean peak period (s)	5	6	6	5	6	6	5	4	4	6	6	5	5	4	4	5	6	4	5	6	7	5	4	6	5	7	6	5	5	5
Mean zero-crossing period (s)	4	4	4	4	4	4	4	3	3	4	4	3	3	3	4	4	3	3	4	4	5	4	3	4	4	4	4	3	3	3
Mean energy period (s)	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-
Mean wave power, kilowatts per metre	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-
Mean peak wave direction	Econcentration 92%	ENEconcentration 98%	ENEconcentration 98%	NEconcentration 97%	NEconcentration 99%	ENEconcentration 99%	ENEconcentration 98%	Econcentration 98%	ENEconcentration 98%	NEconcentration 99%	ENEconcentration 96%	ENEconcentration 89%	SEconcentration 69%	SSEconcentration 97%	Econcentration 92%	Sconcentration 99%	Econcentration 71%	Econcentration 85%	ENEconcentration 95%	NEconcentration 98%	NEconcentration 100%	Econcentration 43%	SEconcentration 69%	NEconcentration 98%	ENEconcentration 91%	NEconcentration 90%	ENEconcentration 92%	ESEconcentration 87%	ESEconcentration 88%	ESEconcentration 93%
Mean directional spread (°)	39.7	29.7	30.4	32.4	28.1	26.8	34.3	35.4	34.8	34.1	43.3	45.4	42.3	37.0	35.8	25.4	46.9	39.1	29.1	33.0	31.7	35.3	36.8	26.3	40.1	42.3	45.4	50.4	53.8	50.0
Mean water temperature(°C)	8.1	8.2	8.4	8.6	8.7	8.7	8.9	8.9	8.8	8.8	9.0	9.1	9.3	9.5	9.6	9.8	9.9	10.0	10.0	10.1	10.2	10.1	10.1	10.3	10.4	10.5	10.7	10.9	11.2	11.4

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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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