M2 wave buoy daily means for Apr 2011

Daily means from the M2 wave buoy for Apr 2011, including available wave height, period, direction, wind and sea temperature data.

Last observation shown Sat, Apr 30, 2011, 23:00

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

Monthly means for 2011

Period Summary

Hog Says

705 wave-buoy observations covered all 30 days. Typical wave height was 1.5 ft (10th–90th percentile 0.8–6.4 ft), while mean peak wave period was 5.7 seconds (10th–90th percentile 3.2–8.1 seconds). Typical wind was 9.4 mph (10th–90th percentile 4.2–23.6 mph) and mean water temperature was 9°C (10th–90th percentile 8.4–9.6°C). 10 of 4,230 checked values (0.2%) were excluded by quality control. Across 1 comparable year, mean wave height was the same as the same-month mean of 2.6 ft and mean wave period was above the same-month mean of 4.1 seconds.

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

Typical Significant Wave Height

1.5ft

Mean: 2.6 ft

P10–P90: 0.8 — 6.4 ft

Recorded extremes

0.5 — 12 ft

Mean Observed Wave Period

5.7secs

P10–P90: 3.2 — 8.1secs

Recorded extremes

2 — 11.6secs

Available for 695 of 705 hourly samples

Typical Observed Wind

Variable, 9.4mph

Mean: 11.8 mph

P10–P90: 4.2 — 23.6 mph

Recorded extremes

0 — 35.6 mph

Circular concentration: 24%

Mean Water Temperature

9°C

P10–P90: 8.4 — 9.6°C

Recorded extremes

8.2 — 10.4°C

Compared With Previous Aprils

Historical baseline from 710 observations across 1 year.

Wave Height: 2.6ft; 0ft above mean; Historical mean 2.592ft
Wave Period: 5.7s; 1.6s above mean; Historical mean 4.1s
Water Temperature: 9°C; Not enough comparable data

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 2011Last observation shown Apr 2011
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)	8	6	2	5	7	6	2	1	1	1	2	3	6	3	1	1	1	1	1	1	1	1	2	1	2	3	2	1	2	5
Mean maximum wave height (ft)	12	9	3	7	11	9	3	1	1	0	3	4	8	4	1	1	0	0	0	0	0	2	2	0	3	4	3	0	3	7
Mean peak period (s)	7	6	7	6	7	6	6	7	6	5	7	4	6	7	7	5	7	5	5	6	6	5	4	5	5	5	5	4	4	6
Mean zero-crossing period (s)	5	5	4	5	5	5	4	5	4	4	4	4	5	5	4	4	4	3	4	3	4	4	3	4	4	4	4	3	3	4
Mean peak wave direction	Sconcentration 99%	Sconcentration 99%	Sconcentration 82%	SSWconcentration 88%	Sconcentration 100%	Sconcentration 99%	Sconcentration 87%	SSEconcentration 78%	Variableconcentration 21%	SSEconcentration 67%	WSWconcentration 54%	Wconcentration 66%	Sconcentration 99%	Sconcentration 99%	SSEconcentration 64%	SWconcentration 33%	Sconcentration 49%	Econcentration 46%	Variableconcentration 11%	Econcentration 40%	Econcentration 39%	ENEconcentration 76%	Variableconcentration 18%	SSWconcentration 49%	Nconcentration 72%	NNEconcentration 92%	ENEconcentration 96%	Econcentration 42%	NEconcentration 96%	NEconcentration 98%
Mean wave direction	Sconcentration 100%	Sconcentration 99%	Sconcentration 96%	SSWconcentration 95%	Sconcentration 100%	Sconcentration 100%	Sconcentration 95%	SSEconcentration 88%	SEconcentration 78%	SSEconcentration 91%	WSWconcentration 69%	WSWconcentration 73%	Sconcentration 99%	Sconcentration 99%	Sconcentration 95%	Sconcentration 54%	SSEconcentration 90%	ESEconcentration 84%	ESEconcentration 62%	ENEconcentration 45%	Econcentration 58%	ENEconcentration 89%	Wconcentration 37%	SSWconcentration 81%	Nconcentration 74%	NNEconcentration 91%	ENEconcentration 97%	Econcentration 77%	NEconcentration 96%	ENEconcentration 98%
Mean directional spread (°)	20.7	22.0	33.7	23.6	20.5	21.9	32.9	37.9	39.1	36.5	35.5	28.1	17.9	26.3	48.6	44.0	49.9	39.3	45.4	37.5	36.6	32.7	25.8	37.6	22.9	28.2	20.6	32.4	28.5	24.5
Mean wind direction	Sconcentration 98%	SSWconcentration 86%	SWconcentration 94%	SSWconcentration 97%	SSWconcentration 99%	SSWconcentration 98%	SWconcentration 71%	Variableconcentration 19%	ESEconcentration 87%	Sconcentration 86%	Wconcentration 71%	WSWconcentration 74%	Sconcentration 98%	SSWconcentration 97%	Sconcentration 97%	Variableconcentration 22%	SEconcentration 63%	Econcentration 91%	NEconcentration 91%	NEconcentration 67%	NEconcentration 90%	SEconcentration 83%	Variableconcentration 20%	WSWconcentration 59%	NNEconcentration 98%	NEconcentration 94%	Econcentration 86%	ENEconcentration 81%	NEconcentration 96%	ENEconcentration 100%
Mean wind speed (mph)	27	20	10	22	23	23	8	3	8	7	14	14	22	9	9	6	5	7	6	4	7	8	9	6	12	13	8	7	13	20
Mean water temperature(°C)	8.3	8.3	8.5	8.4	8.4	8.5	8.8	9.2	9.0	9.3	9.2	9.1	8.9	9.0	9.3	9.2	9.0	9.0	9.0	9.1	9.0	9.2	9.2	9.6	9.5	9.1	9.4	9.5	9.4	9.2

Swipe sideways to see more days.

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.

› Wave Buoy List