M2 wave buoy daily means for Dec 2012

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

Last observation shown Thu, Dec 27, 2012, 03:00

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

Monthly means for 2012

Period Summary

Hog Says

627 wave-buoy observations covered 27 of 31 days (87%). Typical wave height was 4.6 ft (10th–90th percentile 2.1–7.7 ft), while mean peak wave period was 5.9 seconds (10th–90th percentile 4.2–8.9 seconds). Typical wind was 19.2 mph (10th–90th percentile 11.1–26.7 mph) and mean water temperature was 11°C (10th–90th percentile 10.3–11.8°C). 4 of 3,694 checked values (0.1%) were excluded by quality control. Across 2 comparable years, mean wave height was below the same-month mean of 5.9 ft and mean wave period was above the same-month mean of 5.7 seconds.

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

Typical Significant Wave Height

4.6ft

Mean: 4.7 ft

P10–P90: 2.1 — 7.7 ft

Recorded extremes

1 — 11.8 ft

Available for 560 of 627 hourly samples

Mean Observed Wave Period

5.9secs

P10–P90: 4.2 — 8.9secs

Recorded extremes

2.7 — 12.3secs

Available for 623 of 627 hourly samples

Typical Observed Wind

WSW, 19.2mph

Mean: 18.9 mph

P10–P90: 11.1 — 26.7 mph

Recorded extremes

1.1 — 34.7 mph

Circular concentration: 41%

Available for 626 of 627 hourly samples

Mean Water Temperature

11°C

P10–P90: 10.3 — 11.8°C

Recorded extremes

10.2 — 12°C

Compared With Previous Decembers

Historical baseline from 1,093 observations across 2 years.

Wave Height: 4.7ft; 1.2ft below mean; Historical mean 5.906ft
Wave Period: 5.9s; 0.2s above mean; Historical mean 5.7s
Water Temperature: 11°C; 0.5°C below mean; Historical mean 11.5°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 2012Last observation shown Dec 2012
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)	4	3	5	5	5	5	QC rejected	4	5	4	2	4	4	QC rejected	5	5	5	3	8	5	3	6	7	4	-	-	-	-	-	-	-
Mean maximum wave height (ft)	6	4	6	7	7	7	13	6	7	5	2	6	6	10	7	7	7	4	11	6	4	8	10	6	6	8	11	-	-	-	-
Mean peak period (s)	5	5	5	5	5	5	7	5	5	5	5	6	6	6	7	8	5	6	7	6	7	6	7	7	9	6	6	-	-	-	-
Mean zero-crossing period (s)	4	4	4	4	4	4	5	4	4	4	3	4	5	5	5	5	4	4	5	5	4	5	5	5	-	-	-	-	-	-	-
Mean peak wave direction	NNWconcentration 83%	NEconcentration 37%	WSWconcentration 77%	Wconcentration 92%	NNEconcentration 97%	SWconcentration 45%	NNWconcentration 93%	NWconcentration 71%	WNWconcentration 82%	NNEconcentration 94%	SEconcentration 52%	Sconcentration 100%	SSEconcentration 97%	SEconcentration 64%	Sconcentration 92%	Sconcentration 98%	SWconcentration 77%	Variableconcentration 23%	SSEconcentration 98%	Econcentration 55%	SSWconcentration 54%	SSEconcentration 96%	SSWconcentration 90%	Sconcentration 99%	Sconcentration 95%	SSWconcentration 89%	SWconcentration 99%	-	-	-	-
Mean wave direction	NWconcentration 89%	NNEconcentration 32%	WSWconcentration 92%	Wconcentration 96%	Nconcentration 97%	SWconcentration 63%	NNWconcentration 94%	NWconcentration 77%	WNWconcentration 86%	NNEconcentration 95%	SEconcentration 76%	Sconcentration 100%	SSEconcentration 98%	SEconcentration 78%	Sconcentration 97%	Sconcentration 100%	SWconcentration 91%	Variableconcentration 16%	SEconcentration 99%	ENEconcentration 53%	SWconcentration 65%	SSEconcentration 98%	SSWconcentration 97%	Sconcentration 100%	SSWconcentration 91%	SSWconcentration 95%	SWconcentration 100%	-	-	-	-
Mean directional spread (°)	22.9	32.5	25.4	27.2	27.0	23.9	22.0	24.4	26.0	28.1	35.0	21.5	28.7	34.2	27.4	28.5	29.1	28.7	24.8	32.2	29.1	23.2	24.0	23.8	32.3	25.5	27.1	-	-	-	-
Mean wind direction	NWconcentration 95%	SWconcentration 49%	Wconcentration 98%	WNWconcentration 90%	Nconcentration 85%	WSWconcentration 90%	NNWconcentration 95%	WNWconcentration 90%	WNWconcentration 93%	NEconcentration 84%	SSEconcentration 91%	Sconcentration 98%	SSEconcentration 96%	SSEconcentration 57%	SWconcentration 96%	SSWconcentration 96%	Wconcentration 90%	Variableconcentration 12%	SSEconcentration 97%	Variableconcentration 19%	WSWconcentration 66%	Sconcentration 94%	SWconcentration 90%	SSWconcentration 99%	WSWconcentration 84%	WSWconcentration 86%	WSWconcentration 99%	-	-	-	-
Mean wind speed (mph)	18	13	22	23	17	23	28	19	22	14	11	18	15	23	18	19	20	12	25	15	12	21	23	18	18	24	25	-	-	-	-
Mean water temperature(°C)	11.9	11.9	11.8	11.7	11.6	11.5	11.5	11.4	11.4	11.3	11.1	11.0	11.0	11.0	11.0	10.9	10.8	10.8	10.5	10.4	10.4	10.4	10.4	10.3	10.3	10.2	10.3	-	-	-	-

Swipe sideways to see more days.

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.

› Wave Buoy List