M2 wave buoy daily means for Dec 2011

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

Last observation shown Sat, Dec 31, 2011, 23:00

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

Monthly means for 2011

Period Summary

Hog Says

743 wave-buoy observations covered all 31 days. Typical wave height was 5.6 ft (10th–90th percentile 3.6–8.7 ft), while mean peak wave period was 5.8 seconds (10th–90th percentile 4.3–7.6 seconds). Mean water temperature was 11.6°C (10th–90th percentile 10.8–12.6°C). 4 of 3,715 checked values (0.1%) were excluded by quality control. Across 1 comparable year, mean wave period was above the same-month mean of 4.7 seconds.

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

Typical Significant Wave Height

5.6ft

Mean: 5.9 ft

P10–P90: 3.6 — 8.7 ft

Recorded extremes

2.3 — 15.6 ft

Mean Observed Wave Period

5.8secs

P10–P90: 4.3 — 7.6secs

Recorded extremes

2.9 — 12.7secs

Available for 739 of 743 hourly samples

Typical Observed Wind

W, -mph

Mean: - mph

P10–P90: - — - mph

Circular concentration: 84%

Available for 0 of 743 hourly samples

Mean Water Temperature

11.6°C

P10–P90: 10.8 — 12.6°C

Recorded extremes

10.3 — 13.2°C

Compared With Previous Decembers

Historical baseline from 350 observations across 1 year.

Wave Height: 5.9ft; Not enough comparable data
Wave Period: 5.8s; 1.1s above mean; Historical mean 4.7s
Water Temperature: 11.6°C; 0.3°C above mean; Historical mean 11.3°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 Dec 2011Last observation shown Dec 2011
Metric	Dec 1	Dec 2	Dec 3	Dec 4	Dec 5	Dec 6	Dec 7	Dec 8	Dec 9	Dec 10	Dec 11	Dec 12	Dec 13	Dec 14	Dec 15	Dec 16	Dec 17	Dec 18	Dec 19	Dec 20	Dec 21	Dec 22	Dec 23	Dec 24	Dec 25	Dec 26	Dec 27	Dec 28	Dec 29	Dec 30	Dec 31
Mean significant wave height (ft)	6	5	7	6	6	6	8	9	7	4	5	7	QC rejected	7	5	5	6	4	4	4	4	4	6	6	6	7	6	9	7	4	4
Mean maximum wave height (ft)	8	7	10	9	9	9	11	13	10	6	7	10	15	11	7	7	8	6	6	6	5	6	9	9	8	11	10	13	11	5	6
Mean peak period (s)	9	5	6	5	5	5	6	7	5	5	6	6	7	6	5	6	6	5	5	4	4	5	6	6	7	7	7	7	6	5	5
Mean zero-crossing period (s)	5	4	5	5	5	4	5	5	5	4	5	5	6	5	5	4	5	4	4	4	4	4	5	5	5	5	5	5	5	4	4
Mean peak wave direction	Sconcentration 91%	SWconcentration 78%	Wconcentration 88%	Wconcentration 95%	Wconcentration 99%	WSWconcentration 94%	Wconcentration 93%	SWconcentration 80%	Wconcentration 97%	WSWconcentration 80%	SSWconcentration 82%	SWconcentration 87%	SSWconcentration 91%	SSWconcentration 93%	WSWconcentration 73%	WNWconcentration 57%	NWconcentration 83%	NWconcentration 97%	WSWconcentration 76%	Wconcentration 75%	WSWconcentration 88%	SSWconcentration 89%	WSWconcentration 44%	SWconcentration 79%	Sconcentration 96%	Sconcentration 99%	Sconcentration 98%	SWconcentration 78%	Wconcentration 93%	WSWconcentration 33%	SSWconcentration 85%
Mean wave direction	SSWconcentration 99%	SWconcentration 90%	WSWconcentration 93%	Wconcentration 97%	Wconcentration 99%	WSWconcentration 96%	Wconcentration 96%	SWconcentration 88%	Wconcentration 96%	WSWconcentration 84%	SSWconcentration 92%	SWconcentration 91%	SSWconcentration 98%	SSWconcentration 98%	SWconcentration 86%	WNWconcentration 74%	WNWconcentration 93%	WNWconcentration 99%	WSWconcentration 84%	Wconcentration 74%	SWconcentration 94%	SSWconcentration 94%	WSWconcentration 61%	SWconcentration 85%	SSWconcentration 98%	Sconcentration 100%	Sconcentration 99%	SWconcentration 83%	Wconcentration 92%	WSWconcentration 46%	SSWconcentration 97%
Mean directional spread (°)	27.3	24.0	27.7	26.2	28.2	27.7	28.2	24.5	26.1	25.9	25.4	23.7	23.9	27.5	25.5	23.0	26.3	26.8	24.1	24.5	28.0	22.5	20.1	21.9	24.7	20.2	21.3	25.4	27.0	34.5	26.2
Mean wind direction	Wconcentration 88%	WSWconcentration 90%	Wconcentration 99%	Wconcentration 98%	Wconcentration 99%	Wconcentration 97%	Wconcentration 96%	WSWconcentration 86%	Wconcentration 98%	WSWconcentration 87%	WSWconcentration 90%	SWconcentration 83%	WSWconcentration 98%	WSWconcentration 94%	Wconcentration 95%	NWconcentration 93%	NWconcentration 98%	WNWconcentration 98%	Wconcentration 88%	Wconcentration 79%	Wconcentration 98%	SWconcentration 93%	WNWconcentration 76%	WSWconcentration 94%	SWconcentration 98%	SSWconcentration 100%	SSWconcentration 96%	WSWconcentration 90%	Wconcentration 98%	WSWconcentration 85%	SWconcentration 93%
Mean wind speed (mph)	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-
Mean water temperature(°C)	13.1	13.0	12.9	12.5	12.4	12.3	12.2	12.1	11.9	11.8	11.8	11.7	11.6	11.5	11.4	11.3	11.2	11.2	11.4	11.4	11.4	11.3	11.1	11.0	11.0	10.9	10.9	10.9	10.6	10.4	10.4

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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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