M2 wave buoy daily means for May 2017

Daily means from the M2 wave buoy for May 2017, including available wave height, period, direction, wind and sea temperature data.

Last observation shown Wed, May 31, 2017, 23:00

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

Monthly means for 2017

Period Summary

Hog Says

744 wave-buoy observations covered all 31 days. Typical wave height was 1.9 ft (10th–90th percentile 0.9–5.1 ft), while mean peak wave period was 5.5 seconds (10th–90th percentile 3.4–8.1 seconds). Typical wind was 9.8 mph (10th–90th percentile 3.9–20.6 mph) and mean water temperature was 10.7°C (10th–90th percentile 9.7–11.6°C). 4 of 4,464 checked values (0.1%) were excluded by quality control. Across 6 comparable years, mean wave height was below the same-month mean of 3 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

1.9ft

Mean: 2.5 ft

P10–P90: 0.9 — 5.1 ft

Recorded extremes

0.4 — 10.6 ft

Mean Observed Wave Period

5.5secs

P10–P90: 3.4 — 8.1secs

Recorded extremes

2.2 — 10.9secs

Available for 740 of 744 hourly samples

Typical Observed Wind

Variable, 9.8mph

Mean: 11.1 mph

P10–P90: 3.9 — 20.6 mph

Recorded extremes

0.2 — 30.5 mph

Circular concentration: 29%

Mean Water Temperature

10.7°C

P10–P90: 9.7 — 11.6°C

Recorded extremes

9.5 — 13°C

Compared With Previous Mays

Historical baseline from 4,417 observations across 6 years.

Wave Height: 2.5ft; 0.5ft below mean; Historical mean 3.018ft
Wave Period: 5.5s; 0.5s above mean; Historical mean 5s
Water Temperature: 10.7°C; 1.1°C above mean; Historical mean 9.6°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 May 2017Last observation shown May 2017
Metric	May 1	May 2	May 3	May 4	May 5	May 6	May 7	May 8	May 9	May 10	May 11	May 12	May 13	May 14	May 15	May 16	May 17	May 18	May 19	May 20	May 21	May 22	May 23	May 24	May 25	May 26	May 27	May 28	May 29	May 30	May 31
Mean significant wave height (ft)	3	2	3	4	5	5	1	3	2	1	1	2	4	4	7	6	3	2	2	2	3	3	2	1	1	1	1	2	2	1	2
Mean maximum wave height (ft)	4	3	5	6	8	7	1	4	3	0	1	2	5	5	11	9	4	2	2	2	5	4	2	1	1	1	2	3	2	1	2
Mean peak period (s)	7	5	5	5	6	6	6	6	5	7	5	4	5	7	6	7	7	6	4	4	5	4	5	6	5	6	6	4	4	6	4
Mean zero-crossing period (s)	5	4	4	4	5	4	4	4	4	4	4	4	4	5	5	5	5	4	4	3	4	4	4	4	3	4	4	4	4	4	4
Mean peak wave direction	SSEconcentration 47%	Econcentration 48%	NEconcentration 93%	NEconcentration 97%	ENEconcentration 99%	NEconcentration 93%	Econcentration 54%	ENEconcentration 67%	ENEconcentration 80%	Sconcentration 72%	Econcentration 51%	NEconcentration 81%	Sconcentration 73%	Sconcentration 100%	Sconcentration 100%	Sconcentration 99%	SSEconcentration 96%	SSWconcentration 74%	SSWconcentration 84%	SSWconcentration 76%	Sconcentration 98%	Sconcentration 95%	SSEconcentration 97%	SSEconcentration 90%	SEconcentration 53%	SEconcentration 57%	SSEconcentration 40%	NNWconcentration 51%	NNEconcentration 74%	SEconcentration 47%	SEconcentration 53%
Mean wave direction	Econcentration 79%	Econcentration 96%	ENEconcentration 92%	NEconcentration 98%	ENEconcentration 99%	ENEconcentration 97%	Econcentration 93%	ENEconcentration 86%	Econcentration 85%	SSEconcentration 89%	Econcentration 71%	NEconcentration 90%	SSEconcentration 61%	Sconcentration 100%	Sconcentration 99%	Sconcentration 100%	Sconcentration 100%	SSWconcentration 93%	SSWconcentration 95%	SSWconcentration 96%	Sconcentration 100%	Sconcentration 99%	SSEconcentration 98%	SSEconcentration 97%	SEconcentration 84%	SEconcentration 78%	SEconcentration 55%	NWconcentration 47%	NEconcentration 95%	SEconcentration 51%	SEconcentration 72%
Mean directional spread (°)	25.9	30.6	24.9	26.6	20.9	24.3	26.0	25.8	30.1	33.3	25.3	32.2	24.3	21.0	18.3	21.0	27.5	31.4	26.3	31.1	21.9	25.8	28.8	33.3	32.6	35.7	34.8	44.0	28.1	33.6	40.7
Mean wind direction	NNEconcentration 93%	ENEconcentration 88%	NEconcentration 89%	NEconcentration 98%	ENEconcentration 96%	ENEconcentration 95%	NNEconcentration 37%	NEconcentration 95%	Econcentration 95%	SSEconcentration 70%	ENEconcentration 77%	Econcentration 82%	Sconcentration 91%	SSWconcentration 96%	Sconcentration 96%	Sconcentration 98%	SWconcentration 69%	SWconcentration 82%	WSWconcentration 69%	SWconcentration 83%	Sconcentration 96%	Sconcentration 87%	SSWconcentration 74%	Sconcentration 72%	ESEconcentration 90%	ESEconcentration 90%	Variableconcentration 12%	NNWconcentration 61%	Variableconcentration 20%	SWconcentration 48%	SEconcentration 77%
Mean wind speed (mph)	9	11	16	18	20	16	4	11	9	4	7	5	15	15	25	18	9	10	9	11	18	14	8	8	8	8	8	8	5	7	10
Mean water temperature(°C)	9.7	9.8	9.7	9.7	9.7	9.8	10.6	10.1	10.1	10.4	10.2	10.1	10.0	10.3	10.2	10.3	10.7	11.0	11.6	11.5	11.4	11.5	11.9	12.1	11.8	11.2	10.8	10.9	11.1	11.2	11.0

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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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