M2 wave buoy daily means for May 2020

Daily means from the M2 wave buoy for May 2020, including available wave height, period, direction, wind and sea temperature data.

Last observation shown Sun, May 31, 2020, 23:00

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

Monthly means for 2020

Period Summary

Hog Says

744 wave-buoy observations covered all 31 days. Typical wave height was 1.9 ft (10th–90th percentile 0.8–5.4 ft), while mean peak wave period was 5.3 seconds (10th–90th percentile 3.4–8.1 seconds). Typical wind was 10.8 mph (10th–90th percentile 4.4–21.6 mph) and mean water temperature was 10.5°C (10th–90th percentile 9.4–12.4°C). All 2,976 checked values passed quality control. Across 8 comparable years, mean wave height was below the same-month mean of 2.9 ft and mean wave period was above the same-month mean of 5.1 seconds.

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

Typical Significant Wave Height

1.9ft

Mean: 2.6 ft

P10–P90: 0.8 — 5.4 ft

Recorded extremes

0.4 — 10 ft

Available for 248 of 744 hourly samples

Mean Observed Wave Period

5.3secs

P10–P90: 3.4 — 8.1secs

Recorded extremes

2.2 — 10.5secs

Available for 248 of 744 hourly samples

Typical Observed Wind

Variable, 10.8mph

Mean: 11.8 mph

P10–P90: 4.4 — 21.6 mph

Recorded extremes

0 — 27.8 mph

Circular concentration: 14%

Mean Water Temperature

10.5°C

P10–P90: 9.4 — 12.4°C

Recorded extremes

9 — 14.1°C

Compared With Previous Mays

Historical baseline from 5,896 observations across 8 years.

Wave Height: 2.6ft; 0.3ft below mean; Historical mean 2.887ft
Wave Period: 5.3s; 0.2s above mean; Historical mean 5.1s
Water Temperature: 10.5°C; 0.7°C above mean; Historical mean 9.8°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 May 2020Last observation shown May 2020
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	1	2	QC rejected	3	2	2	1	5	5	2	3	1	1	1	2	QC rejected	3	3	1	7	7	4	4	1	1	1	1	1	2
Mean maximum wave height (ft)	5	3	1	2	7	4	2	2	0	8	8	3	5	1	1	1	2	5	4	4	2	11	10	5	5	2	0	0	0	1	2
Mean peak period (s)	8	5	8	4	5	5	8	8	8	6	6	4	5	4	4	3	4	5	5	5	4	7	6	5	5	6	6	5	4	4	4
Mean zero-crossing period (s)	4	4	5	4	4	4	4	5	5	5	5	4	4	3	3	3	3	4	4	4	3	5	5	4	4	4	4	4	3	3	4
Mean peak wave direction	SSWconcentration 65%	WNWconcentration 52%	Sconcentration 99%	NNEconcentration 70%	ENEconcentration 98%	Econcentration 80%	Sconcentration 97%	Sconcentration 99%	SSEconcentration 98%	NEconcentration 73%	NEconcentration 96%	Nconcentration 85%	NNEconcentration 97%	NNEconcentration 97%	NNWconcentration 69%	WSWconcentration 63%	SSWconcentration 92%	Sconcentration 100%	Sconcentration 98%	Sconcentration 98%	SSWconcentration 62%	SSEconcentration 83%	SSWconcentration 88%	SSWconcentration 73%	Sconcentration 98%	SSEconcentration 91%	SSEconcentration 77%	Econcentration 34%	ESEconcentration 82%	ENEconcentration 80%	ENEconcentration 96%
Mean wave direction	SWconcentration 87%	WSWconcentration 49%	Sconcentration 99%	NNEconcentration 71%	ENEconcentration 99%	Econcentration 85%	SSEconcentration 96%	SSEconcentration 97%	SSEconcentration 97%	NNEconcentration 73%	NEconcentration 99%	Nconcentration 92%	NNEconcentration 97%	NNEconcentration 97%	Nconcentration 79%	WSWconcentration 65%	SSWconcentration 97%	Sconcentration 99%	Sconcentration 99%	Sconcentration 99%	Sconcentration 73%	Sconcentration 94%	SSWconcentration 95%	SSWconcentration 88%	Sconcentration 97%	SSEconcentration 97%	SEconcentration 83%	ESEconcentration 75%	SEconcentration 87%	Econcentration 71%	ENEconcentration 98%
Mean directional spread (°)	22.7	33.2	19.2	26.0	23.4	36.2	28.3	27.4	26.5	23.9	26.2	27.1	27.8	40.3	35.9	28.5	29.5	19.3	25.1	19.3	34.3	18.6	25.8	31.3	21.6	36.0	35.2	29.0	28.3	30.4	27.2
Mean wind direction	Wconcentration 91%	Wconcentration 65%	NEconcentration 68%	NNEconcentration 92%	Econcentration 98%	Econcentration 94%	SSEconcentration 89%	SSEconcentration 81%	NEconcentration 87%	NEconcentration 91%	NNEconcentration 98%	NWconcentration 78%	NNEconcentration 95%	NNEconcentration 91%	WNWconcentration 74%	WSWconcentration 72%	SSWconcentration 94%	SSWconcentration 98%	Sconcentration 95%	Sconcentration 97%	Sconcentration 55%	SSWconcentration 92%	WSWconcentration 97%	SWconcentration 81%	SSWconcentration 81%	Variableconcentration 19%	Econcentration 94%	ENEconcentration 88%	ESEconcentration 83%	Econcentration 93%	ENEconcentration 96%
Mean wind speed (mph)	12	12	5	14	20	9	11	6	5	21	19	10	15	7	9	10	12	16	13	15	9	23	22	15	15	6	6	5	8	8	11
Mean water temperature(°C)	9.2	9.5	9.8	9.6	9.3	9.5	9.9	10.7	10.9	9.8	9.5	9.6	9.6	9.9	9.9	10.2	10.3	10.3	10.7	10.6	11.2	10.7	10.7	10.5	10.6	11.2	11.8	12.5	12.8	12.9	12.6

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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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