M2 wave buoy daily means for Apr 2020

Daily means from the M2 wave buoy for Apr 2020, including available wave height, period, direction, wind and sea temperature data.

Last observation shown Thu, Apr 30, 2020, 23:00

Data available: Thu, May 3, 2001 to Sat, Aug 22, 2026

Monthly means for 2020

Period Summary

Hog Says

719 wave-buoy observations covered all 30 days. Typical wave height was 2.3 ft (10th–90th percentile 0.8–5.4 ft), while mean peak wave period was 5.4 seconds (10th–90th percentile 3.2–8.8 seconds). Typical wind was 12.1 mph (10th–90th percentile 3.9–21.3 mph) and mean water temperature was 8.6°C (10th–90th percentile 8–9.2°C). All 2,877 checked values passed quality control. Across 8 comparable years, mean wave height was below the same-month mean of 3.1 ft and mean wave period was above the same-month mean of 5.2 seconds.

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

Typical Significant Wave Height

2.3ft

Mean: 2.7 ft

P10–P90: 0.8 — 5.4 ft

Recorded extremes

0.4 — 9.2 ft

Available for 240 of 719 hourly samples

Mean Observed Wave Period

5.4secs

P10–P90: 3.2 — 8.8secs

Recorded extremes

2.1 — 11.7secs

Available for 240 of 719 hourly samples

Typical Observed Wind

Variable, 12.1mph

Mean: 12.3 mph

P10–P90: 3.9 — 21.3 mph

Recorded extremes

0.2 — 36.5 mph

Circular concentration: 29%

Mean Water Temperature

8.6°C

P10–P90: 8 — 9.2°C

Recorded extremes

7.9 — 10.8°C

Compared With Previous Aprils

Historical baseline from 5,709 observations across 8 years.

Wave Height: 2.7ft; 0.4ft below mean; Historical mean 3.084ft
Wave Period: 5.4s; 0.2s above mean; Historical mean 5.2s
Water Temperature: 8.6°C; In line with the historical mean; Historical mean 8.6°C

Show 10th–90th percentile ranges

About M2 wave buoy

M2 (WMO 62091) is part of the Irish Marine Data Buoy Observation Network, managed by the Marine Institute in collaboration with Met Éireann. Moored in the Irish Sea east of Ireland, it provides open-water context for the busy, relatively enclosed waters between the Irish and British coasts.

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

M2 wave buoy daily means Apr 2020Last observation shown Apr 2020
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	3	2	3	QC rejected	5	3	1	1	1	1	2	QC rejected	2	1	2	5	4	QC rejected	5	5	4	3	1	1	1	1	2	3	QC rejected
Mean maximum wave height (ft)	3	4	3	4	8	7	4	2	1	2	0	2	8	2	0	3	7	6	3	6	8	6	4	1	0	1	0	3	4	7
Mean peak period (s)	4	4	4	4	6	9	10	8	6	4	6	7	6	4	4	4	6	6	5	5	6	5	5	4	6	4	4	4	4	8
Mean zero-crossing period (s)	3	4	3	4	4	5	5	5	4	4	4	4	5	3	3	3	4	4	4	4	5	4	4	3	4	3	3	3	4	5
Mean peak wave direction	NNWconcentration 93%	WNWconcentration 90%	Wconcentration 49%	Sconcentration 99%	SSEconcentration 97%	Sconcentration 100%	Sconcentration 96%	Sconcentration 99%	SEconcentration 58%	ENEconcentration 79%	Sconcentration 75%	Variableconcentration 25%	ENEconcentration 99%	SEconcentration 54%	Sconcentration 63%	Nconcentration 99%	ENEconcentration 99%	ENEconcentration 100%	Econcentration 65%	ENEconcentration 98%	ENEconcentration 99%	NEconcentration 97%	NEconcentration 92%	NEconcentration 74%	ESEconcentration 64%	NNEconcentration 84%	NNEconcentration 82%	NEconcentration 71%	ESEconcentration 75%	Sconcentration 85%
Mean wave direction	NNWconcentration 95%	WNWconcentration 92%	Wconcentration 50%	Sconcentration 99%	SSEconcentration 99%	Sconcentration 100%	Sconcentration 100%	SSEconcentration 100%	ESEconcentration 81%	ENEconcentration 95%	SSEconcentration 87%	Variableconcentration 7%	ENEconcentration 99%	SEconcentration 64%	Sconcentration 79%	NNEconcentration 98%	ENEconcentration 99%	ENEconcentration 99%	Econcentration 87%	ENEconcentration 99%	ENEconcentration 100%	NEconcentration 97%	NEconcentration 98%	NEconcentration 93%	ESEconcentration 72%	NEconcentration 70%	NNEconcentration 68%	NEconcentration 70%	ESEconcentration 88%	Sconcentration 88%
Mean directional spread (°)	27.8	27.2	27.9	22.9	18.8	20.4	30.2	30.8	33.6	32.7	27.8	23.0	22.5	36.0	27.1	25.0	20.2	24.1	29.9	20.0	22.9	27.6	27.9	30.4	23.6	35.5	43.2	25.8	36.6	23.4
Mean wind direction	NWconcentration 94%	WNWconcentration 94%	WSWconcentration 77%	Sconcentration 95%	SSEconcentration 97%	SSWconcentration 94%	Sconcentration 78%	SSEconcentration 70%	ENEconcentration 87%	ESEconcentration 62%	WSWconcentration 76%	Nconcentration 44%	ENEconcentration 98%	Sconcentration 81%	Sconcentration 36%	NNEconcentration 96%	ENEconcentration 98%	Econcentration 97%	ENEconcentration 78%	ENEconcentration 95%	ENEconcentration 98%	NEconcentration 95%	ENEconcentration 95%	ENEconcentration 95%	ENEconcentration 42%	NEconcentration 64%	NNEconcentration 82%	ENEconcentration 78%	SEconcentration 91%	Wconcentration 58%
Mean wind speed (mph)	14	16	15	16	23	14	11	5	7	4	6	13	21	11	6	14	19	15	8	20	20	16	11	7	4	7	5	11	15	15
Mean water temperature(°C)	8.0	8.0	8.0	8.0	8.1	8.2	8.3	8.7	8.5	8.5	8.8	8.7	8.4	8.5	8.7	8.7	8.6	8.5	8.5	8.6	8.7	8.7	8.8	9.0	9.4	9.2	9.2	9.1	9.1	9.1

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The observation data displayed on this page is from the Met Éireann Irish Marine Data Buoy Observation Network.

Learn how SurfHog combines, checks and summarizes observations in the data and methodology notes.

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