M2 wave buoy daily means for Jan 2015

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

Last observation shown Sat, Jan 31, 2015, 23:00

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

Monthly means for 2015

Period Summary

Hog Says

737 wave-buoy observations covered all 31 days. Typical wave height was 5.5 ft (10th–90th percentile 2.4–10.4 ft), while mean peak wave period was 5.9 seconds (10th–90th percentile 4.1–8.3 seconds). Typical wind was 23.9 mph (10th–90th percentile 12.9–33.4 mph) and mean water temperature was 10°C (10th–90th percentile 9.2–11°C). 2 of 4,422 checked values (0%) were excluded by quality control. Across 4 comparable years, mean wave height was above the same-month mean of 5.1 ft and mean wave period was above the same-month mean of 5.5 seconds.

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

Typical Significant Wave Height

5.5ft

Mean: 6 ft

P10–P90: 2.4 — 10.4 ft

Recorded extremes

1.2 — 17.8 ft

Mean Observed Wave Period

5.9secs

P10–P90: 4.1 — 8.3secs

Recorded extremes

2.6 — 11.4secs

Available for 735 of 737 hourly samples

Typical Observed Wind

WSW, 23.9mph

Mean: 23.6 mph

P10–P90: 12.9 — 33.4 mph

Recorded extremes

0.2 — 42.4 mph

Circular concentration: 62%

Mean Water Temperature

10°C

P10–P90: 9.2 — 11°C

Recorded extremes

8.9 — 11.4°C

Compared With Previous Januarys

Historical baseline from 2,922 observations across 4 years.

Wave Height: 6ft; 0.9ft above mean; Historical mean 5.052ft
Wave Period: 5.9s; 0.4s above mean; Historical mean 5.5s
Water Temperature: 10°C; 0.6°C above mean; Historical mean 9.4°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 Jan 2015Last observation shown Jan 2015
Metric	Jan 1	Jan 2	Jan 3	Jan 4	Jan 5	Jan 6	Jan 7	Jan 8	Jan 9	Jan 10	Jan 11	Jan 12	Jan 13	Jan 14	Jan 15	Jan 16	Jan 17	Jan 18	Jan 19	Jan 20	Jan 21	Jan 22	Jan 23	Jan 24	Jan 25	Jan 26	Jan 27	Jan 28	Jan 29	Jan 30	Jan 31
Mean significant wave height (ft)	9	7	3	3	6	5	10	6	9	9	7	8	6	9	12	6	5	5	3	4	3	2	5	4	4	4	3	8	7	7	10
Mean maximum wave height (ft)	14	9	4	5	8	8	14	8	13	13	10	12	9	13	17	9	7	8	4	5	4	2	8	6	5	6	4	11	11	10	15
Mean peak period (s)	8	5	6	7	6	5	8	7	7	6	6	8	5	7	8	5	5	6	5	5	5	3	6	5	5	5	4	6	6	6	7
Mean zero-crossing period (s)	6	5	4	4	5	5	6	5	5	5	5	6	5	5	6	5	4	4	4	4	4	3	5	4	4	4	4	5	5	5	6
Mean peak wave direction	Sconcentration 98%	WSWconcentration 87%	Sconcentration 88%	Sconcentration 99%	Sconcentration 99%	SWconcentration 73%	Sconcentration 99%	SSWconcentration 87%	SSWconcentration 85%	WSWconcentration 81%	SWconcentration 91%	Sconcentration 93%	SSWconcentration 96%	SSWconcentration 91%	SSWconcentration 93%	Wconcentration 89%	WSWconcentration 96%	NNWconcentration 86%	Nconcentration 59%	Sconcentration 95%	NEconcentration 61%	Econcentration 51%	Sconcentration 91%	WNWconcentration 93%	Sconcentration 97%	Wconcentration 77%	WSWconcentration 87%	WSWconcentration 76%	WSWconcentration 95%	NWconcentration 95%	NNWconcentration 96%
Mean wave direction	Sconcentration 100%	SWconcentration 95%	SSEconcentration 66%	SSEconcentration 86%	Sconcentration 100%	SWconcentration 83%	Sconcentration 100%	SSWconcentration 96%	SWconcentration 93%	WSWconcentration 87%	SWconcentration 93%	SSWconcentration 97%	SSWconcentration 98%	SSWconcentration 96%	SSWconcentration 98%	WSWconcentration 92%	SWconcentration 98%	NNWconcentration 83%	Nconcentration 61%	SSEconcentration 98%	NEconcentration 78%	ESEconcentration 74%	SSWconcentration 93%	Wconcentration 94%	Sconcentration 99%	Wconcentration 81%	WSWconcentration 87%	WSWconcentration 81%	Wconcentration 97%	NWconcentration 96%	NNWconcentration 97%
Mean directional spread (°)	17.6	30.6	27.5	23.7	20.1	27.4	16.6	24.3	25.7	31.6	26.8	21.7	25.0	22.4	21.3	30.0	25.3	22.9	38.0	23.5	39.6	35.3	23.8	27.1	22.3	22.5	26.1	25.7	27.1	22.3	19.5
Mean wind direction	SSWconcentration 94%	Wconcentration 95%	Nconcentration 41%	SSWconcentration 76%	SSWconcentration 98%	WSWconcentration 83%	SSWconcentration 95%	WSWconcentration 95%	WSWconcentration 93%	Wconcentration 94%	WSWconcentration 94%	SWconcentration 91%	WSWconcentration 99%	SWconcentration 89%	WSWconcentration 96%	Wconcentration 93%	Wconcentration 96%	NNWconcentration 87%	NWconcentration 43%	SEconcentration 92%	NNEconcentration 93%	SEconcentration 56%	SWconcentration 83%	Wconcentration 94%	SSWconcentration 98%	WNWconcentration 97%	WSWconcentration 90%	Wconcentration 87%	Wconcentration 98%	NWconcentration 97%	NNWconcentration 98%
Mean wind speed (mph)	29	25	11	14	25	23	31	25	31	30	28	27	26	30	34	23	22	22	12	16	13	12	25	21	18	21	19	30	30	28	33
Mean water temperature(°C)	11.3	11.1	10.9	11.0	11.0	10.9	11.0	10.9	10.8	10.6	10.3	10.1	10.1	9.9	9.9	9.7	9.7	9.7	9.6	9.6	9.5	9.5	9.6	9.5	9.4	9.3	9.2	9.2	9.1	9.0	9.0

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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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