M2 wave buoy daily means for Apr 2015

Daily means from the M2 wave buoy for Apr 2015, including available wave height, period, direction, wind and sea temperature data.

Last observation shown Thu, Apr 30, 2015, 23:00

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

Monthly means for 2015

Period Summary

Hog Says

709 wave-buoy observations covered all 30 days. Typical wave height was 2.2 ft (10th–90th percentile 0.5–5.1 ft), while mean peak wave period was 5.4 seconds (10th–90th percentile 3.3–8.1 seconds). Typical wind was 11.8 mph (10th–90th percentile 3.1–22.3 mph) and mean water temperature was 8.2°C (10th–90th percentile 7.7–8.6°C). 6 of 4,254 checked values (0.1%) were excluded by quality control. Across 4 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 seconds.

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

Typical Significant Wave Height

2.2ft

Mean: 2.6 ft

P10–P90: 0.5 — 5.1 ft

Recorded extremes

0.4 — 12.4 ft

Mean Observed Wave Period

5.4secs

P10–P90: 3.3 — 8.1secs

Recorded extremes

2 — 23.3secs

Available for 703 of 709 hourly samples

Typical Observed Wind

Variable, 11.8mph

Mean: 12.3 mph

P10–P90: 3.1 — 22.3 mph

Recorded extremes

0.2 — 34.6 mph

Circular concentration: 8%

Mean Water Temperature

8.2°C

P10–P90: 7.7 — 8.6°C

Recorded extremes

7.5 — 9.8°C

Compared With Previous Aprils

Historical baseline from 2,844 observations across 4 years.

Wave Height: 2.6ft; 0.5ft below mean; Historical mean 3.051ft
Wave Period: 5.4s; 0.4s above mean; Historical mean 5s
Water Temperature: 8.2°C; 0.2°C below mean; Historical mean 8.4°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 2015Last observation shown Apr 2015
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)	5	2	3	3	1	1	1	1	1	2	5	6	4	4	2	1	2	4	2	1	1	1	1	2	4	3	3	5	5	3
Mean maximum wave height (ft)	7	3	5	4	0	0	0	0	1	3	7	9	5	6	4	1	3	5	3	2	0	2	0	3	5	5	4	8	7	5
Mean peak period (s)	5	6	5	5	5	8	7	7	6	4	5	7	6	5	5	4	4	5	4	5	7	4	8	7	5	5	4	5	5	5
Mean zero-crossing period (s)	4	4	4	4	4	4	5	4	4	3	4	5	4	4	4	3	4	4	4	4	4	3	4	4	4	4	4	4	4	4
Mean peak wave direction	Wconcentration 86%	SSEconcentration 89%	Variableconcentration 22%	NNEconcentration 84%	Econcentration 57%	SEconcentration 62%	SSEconcentration 58%	SEconcentration 65%	Sconcentration 64%	SSWconcentration 94%	SWconcentration 76%	Sconcentration 100%	Sconcentration 99%	Sconcentration 99%	Sconcentration 81%	ENEconcentration 64%	NEconcentration 93%	ENEconcentration 98%	ENEconcentration 85%	NEconcentration 61%	SSEconcentration 50%	NNEconcentration 76%	SEconcentration 46%	Sconcentration 94%	Variableconcentration 12%	Nconcentration 93%	Variableconcentration 28%	SWconcentration 79%	SWconcentration 86%	NWconcentration 69%
Mean wave direction	WSWconcentration 86%	SEconcentration 77%	Variableconcentration 27%	NNEconcentration 80%	Econcentration 86%	SSEconcentration 90%	SSEconcentration 82%	SEconcentration 86%	Sconcentration 88%	Sconcentration 99%	SWconcentration 87%	Sconcentration 98%	Sconcentration 100%	Sconcentration 100%	Sconcentration 94%	ENEconcentration 93%	NEconcentration 96%	ENEconcentration 99%	ENEconcentration 98%	ENEconcentration 83%	SEconcentration 69%	NEconcentration 89%	SEconcentration 82%	Sconcentration 98%	Variableconcentration 13%	Nconcentration 99%	WNWconcentration 37%	SWconcentration 84%	SSWconcentration 97%	NWconcentration 55%
Mean directional spread (°)	31.8	36.1	25.7	37.2	42.4	49.3	38.0	35.1	31.5	26.8	27.1	20.3	22.1	19.3	30.9	40.2	29.3	24.9	28.6	37.4	30.8	31.9	34.1	24.1	23.6	28.4	25.3	25.6	27.5	35.3
Mean wind direction	Wconcentration 80%	Variableconcentration 10%	WNWconcentration 58%	NNWconcentration 56%	Variableconcentration 24%	SSWconcentration 64%	Variableconcentration 23%	SEconcentration 97%	Sconcentration 91%	Sconcentration 95%	WSWconcentration 90%	SWconcentration 78%	SSWconcentration 96%	SSWconcentration 100%	Variableconcentration 28%	ENEconcentration 96%	ENEconcentration 87%	ENEconcentration 96%	NEconcentration 90%	ENEconcentration 92%	NNEconcentration 96%	NEconcentration 95%	Variableconcentration 20%	SSWconcentration 94%	Variableconcentration 27%	Nconcentration 69%	WSWconcentration 58%	WSWconcentration 88%	WSWconcentration 94%	NNWconcentration 62%
Mean wind speed (mph)	21	9	17	10	3	3	3	6	9	15	19	18	18	17	8	10	11	18	14	6	7	9	4	14	17	12	13	23	20	14
Mean water temperature(°C)	7.5	7.6	7.6	7.9	7.8	7.9	8.1	8.0	8.0	8.0	8.0	8.0	8.0	8.0	8.0	8.1	8.0	8.1	8.2	8.4	8.4	8.4	8.9	8.5	8.4	8.6	8.6	8.4	8.4	8.5

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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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