M2 wave buoy daily means for Apr 2012

Daily means from the M2 wave buoy for Apr 2012, including available wave height, period, direction, wind and sea temperature data.

Last observation shown Mon, Apr 30, 2012, 23:00

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

Monthly means for 2012

Period Summary

Hog Says

711 wave-buoy observations covered all 30 days. Typical wave height was 3.1 ft (10th–90th percentile 1–9.2 ft), while mean peak wave period was 5.2 seconds (10th–90th percentile 3.4–7.6 seconds). Typical wind was 14.7 mph (10th–90th percentile 5.1–26.4 mph) and mean water temperature was 8.9°C (10th–90th percentile 8.5–9.2°C). 1 of 4,266 checked values (0%) were excluded by quality control. Across 2 comparable years, mean wave height was above the same-month mean of 2.6 ft and mean wave period was above the same-month mean of 4.9 seconds.

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

Typical Significant Wave Height

3.1ft

Mean: 3.9 ft

P10–P90: 1 — 9.2 ft

Recorded extremes

0.5 — 15.4 ft

Mean Observed Wave Period

5.2secs

P10–P90: 3.4 — 7.6secs

Recorded extremes

2.1 — 9.5secs

Available for 710 of 711 hourly samples

Typical Observed Wind

NNW, 14.7mph

Mean: 15.2 mph

P10–P90: 5.1 — 26.4 mph

Recorded extremes

0.3 — 33.9 mph

Circular concentration: 45%

Mean Water Temperature

8.9°C

P10–P90: 8.5 — 9.2°C

Recorded extremes

8.3 — 9.9°C

Compared With Previous Aprils

Historical baseline from 1,415 observations across 2 years.

Wave Height: 3.9ft; 1.3ft above mean; Historical mean 2.625ft
Wave Period: 5.2s; 0.3s above mean; Historical mean 4.9s
Water Temperature: 8.9°C; 0.1°C below mean; Historical mean 9°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 2012Last observation shown Apr 2012
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)	1	1	6	QC rejected	4	2	3	2	3	4	2	2	2	3	3	3	7	5	4	2	2	2	2	2	8	9	5	5	9	6
Mean maximum wave height (ft)	0	1	9	16	5	2	3	3	3	6	3	3	2	5	4	4	11	7	6	3	3	3	3	2	12	14	7	7	13	9
Mean peak period (s)	3	4	6	8	5	4	4	4	5	5	5	4	5	5	5	4	8	6	5	4	4	5	6	6	7	7	5	5	7	6
Mean zero-crossing period (s)	3	3	5	6	4	3	4	3	4	4	4	4	4	4	4	4	5	5	4	4	4	4	4	4	5	6	4	4	5	5
Mean peak wave direction	NNEconcentration 76%	Nconcentration 58%	NWconcentration 73%	NNEconcentration 99%	NEconcentration 85%	WNWconcentration 64%	NNWconcentration 90%	WNWconcentration 87%	Sconcentration 79%	WSWconcentration 79%	WNWconcentration 46%	NNWconcentration 86%	NNEconcentration 77%	NNEconcentration 96%	Nconcentration 96%	Sconcentration 66%	Sconcentration 100%	Econcentration 50%	NNEconcentration 97%	WNWconcentration 60%	WNWconcentration 95%	WSWconcentration 44%	ESEconcentration 46%	Variableconcentration 12%	ENEconcentration 87%	NNEconcentration 97%	NNEconcentration 97%	NEconcentration 91%	NEconcentration 98%	NEconcentration 99%
Mean wave direction	NNEconcentration 83%	NNWconcentration 68%	NWconcentration 79%	NNEconcentration 100%	ENEconcentration 94%	WNWconcentration 72%	NNWconcentration 92%	WNWconcentration 88%	SSWconcentration 87%	WSWconcentration 96%	Wconcentration 61%	NNWconcentration 82%	NNEconcentration 97%	NNEconcentration 98%	Nconcentration 96%	Sconcentration 69%	Sconcentration 98%	Econcentration 50%	NNEconcentration 99%	Wconcentration 61%	WNWconcentration 95%	WSWconcentration 64%	ESEconcentration 55%	Variableconcentration 19%	ENEconcentration 92%	NNEconcentration 97%	NNEconcentration 98%	NEconcentration 94%	NEconcentration 98%	NEconcentration 99%
Mean directional spread (°)	34.9	35.3	22.7	23.6	30.9	27.4	34.0	31.7	29.1	32.0	35.1	30.0	32.2	23.4	26.7	25.5	21.2	29.0	30.8	37.3	32.5	33.0	27.5	33.6	22.4	26.5	26.1	25.6	20.8	26.1
Mean wind direction	NNWconcentration 53%	NWconcentration 94%	NWconcentration 76%	NNEconcentration 99%	NEconcentration 71%	WNWconcentration 94%	NNWconcentration 94%	Wconcentration 93%	SWconcentration 90%	Wconcentration 98%	WNWconcentration 95%	NNWconcentration 85%	Nconcentration 74%	NNEconcentration 95%	Nconcentration 72%	SSWconcentration 96%	SWconcentration 83%	NEconcentration 64%	NNWconcentration 94%	Wconcentration 85%	WNWconcentration 88%	Wconcentration 78%	NNEconcentration 66%	NNEconcentration 48%	ENEconcentration 94%	NNEconcentration 97%	NNEconcentration 100%	NEconcentration 95%	NEconcentration 97%	ENEconcentration 98%
Mean wind speed (mph)	5	8	23	28	12	12	12	13	14	17	12	10	7	17	10	17	22	18	15	10	13	12	11	8	26	25	17	18	27	20
Mean water temperature(°C)	8.9	8.8	8.6	8.4	8.4	8.4	8.6	8.6	8.6	8.6	8.7	8.8	9.0	8.9	8.9	8.9	8.9	8.9	8.9	9.0	9.0	9.1	9.1	9.3	9.1	9.1	9.1	9.2	9.1	9.1

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Observation data source

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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