M2 wave buoy daily means for Mar 2015

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

Last observation shown Tue, Mar 31, 2015, 23:00

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

Monthly means for 2015

Period Summary

Hog Says

730 wave-buoy observations covered all 31 days. Typical wave height was 3.5 ft (10th–90th percentile 1.2–8.5 ft), while mean peak wave period was 5.5 seconds (10th–90th percentile 3.8–7.9 seconds). Typical wind was 18 mph (10th–90th percentile 7.2–30.1 mph) and mean water temperature was 7.7°C (10th–90th percentile 7.6–7.9°C). 2 of 4,377 checked values (0%) were excluded by quality control. Across 4 comparable years, mean wave height was above the same-month mean of 2.7 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

3.5ft

Mean: 4.4 ft

P10–P90: 1.2 — 8.5 ft

Recorded extremes

0.4 — 12.2 ft

Mean Observed Wave Period

5.5secs

P10–P90: 3.8 — 7.9secs

Recorded extremes

2.1 — 10.1secs

Available for 728 of 730 hourly samples

Typical Observed Wind

WSW, 18mph

Mean: 18.5 mph

P10–P90: 7.2 — 30.1 mph

Recorded extremes

0.5 — 41.4 mph

Circular concentration: 31%

Available for 727 of 730 hourly samples

Mean Water Temperature

7.7°C

P10–P90: 7.6 — 7.9°C

Recorded extremes

7.5 — 8.5°C

Compared With Previous Marchs

Historical baseline from 2,932 observations across 4 years.

Wave Height: 4.4ft; 1.7ft above mean; Historical mean 2.723ft
Wave Period: 5.5s; 0.5s above mean; Historical mean 5s
Water Temperature: 7.7°C; 0.3°C below mean; Historical mean 8°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 Mar 2015Last observation shown Mar 2015
Metric	Mar 1	Mar 2	Mar 3	Mar 4	Mar 5	Mar 6	Mar 7	Mar 8	Mar 9	Mar 10	Mar 11	Mar 12	Mar 13	Mar 14	Mar 15	Mar 16	Mar 17	Mar 18	Mar 19	Mar 20	Mar 21	Mar 22	Mar 23	Mar 24	Mar 25	Mar 26	Mar 27	Mar 28	Mar 29	Mar 30	Mar 31
Mean significant wave height (ft)	7	6	6	5	4	7	10	5	7	3	7	QC rejected	3	3	3	3	2	1	1	1	3	2	2	4	4	6	2	6	5	5	9
Mean maximum wave height (ft)	11	10	9	7	5	10	15	8	10	4	9	9	4	4	4	4	2	0	0	1	3	3	3	5	5	9	3	8	8	8	13
Mean peak period (s)	6	6	6	5	5	6	8	7	7	5	7	7	5	5	5	4	5	7	8	4	4	4	4	5	5	6	5	6	5	5	6
Mean zero-crossing period (s)	5	5	5	4	4	5	6	5	5	4	5	5	4	4	4	4	4	4	5	3	4	3	4	4	4	5	4	5	5	4	5
Mean peak wave direction	SWconcentration 90%	SWconcentration 96%	SWconcentration 94%	Wconcentration 74%	Sconcentration 96%	Sconcentration 100%	Sconcentration 100%	Sconcentration 72%	Sconcentration 89%	SSWconcentration 74%	Sconcentration 97%	SSEconcentration 87%	Nconcentration 45%	ENEconcentration 94%	ENEconcentration 99%	ENEconcentration 99%	Econcentration 82%	Sconcentration 54%	SSEconcentration 80%	Wconcentration 61%	NNEconcentration 91%	SSEconcentration 71%	WSWconcentration 52%	NWconcentration 91%	Variableconcentration 26%	Wconcentration 43%	Variableconcentration 22%	Sconcentration 92%	WSWconcentration 79%	WSWconcentration 69%	WNWconcentration 93%
Mean wave direction	SWconcentration 96%	SWconcentration 97%	SWconcentration 97%	Wconcentration 86%	Sconcentration 99%	Sconcentration 100%	Sconcentration 100%	SSWconcentration 83%	Sconcentration 91%	SSWconcentration 87%	Sconcentration 99%	SSEconcentration 93%	NNWconcentration 46%	ENEconcentration 96%	ENEconcentration 99%	ENEconcentration 100%	Econcentration 96%	ESEconcentration 72%	SSEconcentration 92%	Wconcentration 68%	NNEconcentration 87%	SSEconcentration 76%	WSWconcentration 58%	NWconcentration 93%	NNWconcentration 31%	Wconcentration 51%	SSWconcentration 42%	SSWconcentration 96%	SWconcentration 92%	SWconcentration 78%	WNWconcentration 96%
Mean directional spread (°)	26.1	28.5	26.0	36.2	22.7	19.5	17.2	28.1	22.7	32.9	22.2	23.5	23.3	24.5	20.9	22.1	32.9	34.4	44.1	27.4	29.0	33.4	33.1	23.1	32.0	24.6	37.2	23.9	32.3	24.7	24.4
Mean wind direction	Wconcentration 96%	WSWconcentration 97%	WSWconcentration 98%	Wconcentration 91%	SSWconcentration 91%	SSWconcentration 100%	SSWconcentration 99%	WSWconcentration 70%	SSWconcentration 75%	SWconcentration 57%	Sconcentration 50%	Sconcentration 39%	Nconcentration 86%	Econcentration 96%	Econcentration 98%	Econcentration 99%	Econcentration 87%	NNEconcentration 96%	Nconcentration 38%	WNWconcentration 85%	NNEconcentration 88%	Sconcentration 80%	Wconcentration 84%	NWconcentration 95%	WSWconcentration 39%	WNWconcentration 76%	SWconcentration 74%	SWconcentration 86%	Wconcentration 85%	WSWconcentration 82%	WNWconcentration 98%
Mean wind speed (mph)	27	28	27	20	19	27	31	14	26	14	21	22	15	15	16	16	7	7	4	11	13	14	13	20	17	22	12	22	20	24	32
Mean water temperature(°C)	8.0	8.0	7.9	7.8	7.8	7.8	7.8	7.7	7.7	7.7	7.6	7.6	7.6	7.6	7.5	7.5	7.6	7.7	7.8	7.7	7.7	7.7	7.7	7.7	7.8	7.8	7.9	7.9	7.9	7.7	7.7

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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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