M2 wave buoy daily means for Jun 2021

Daily means from the M2 wave buoy for Jun 2021, including available wave height, period, direction, wind and sea temperature data.

Last observation shown Wed, Jun 30, 2021, 23:00

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

Monthly means for 2021

Period Summary

Hog Says

713 wave-buoy observations covered all 30 days. Typical wave height was 2.1 ft (10th–90th percentile 1–4.1 ft), while mean peak wave period was 4.6 seconds (10th–90th percentile 3.2–6.1 seconds). Typical wind was 12.1 mph (10th–90th percentile 5.4–20.6 mph) and mean water temperature was 12.1°C (10th–90th percentile 11.2–12.9°C). 2 of 4,278 checked values (0%) were excluded by quality control. Across 9 comparable years, mean wave height was below the same-month mean of 2.6 ft and mean wave period was below the same-month mean of 5.2 seconds.

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

Typical Significant Wave Height

2.1ft

Mean: 2.4 ft

P10–P90: 1 — 4.1 ft

Recorded extremes

0 — 7.7 ft

Mean Observed Wave Period

4.6secs

P10–P90: 3.2 — 6.1secs

Recorded extremes

2 — 8.8secs

Available for 711 of 713 hourly samples

Typical Observed Wind

Variable, 12.1mph

Mean: 12.6 mph

P10–P90: 5.4 — 20.6 mph

Recorded extremes

1 — 26 mph

Circular concentration: 6%

Mean Water Temperature

12.1°C

P10–P90: 11.2 — 12.9°C

Recorded extremes

10.5 — 14.4°C

Compared With Previous Junes

Historical baseline from 5,797 observations across 9 years.

Wave Height: 2.4ft; 0.2ft below mean; Historical mean 2.625ft
Wave Period: 4.6s; 0.6s below mean; Historical mean 5.2s
Water Temperature: 12.1°C; 0.4°C above mean; Historical mean 11.7°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 Jun 2021Last observation shown Jun 2021
Metric	Jun 1	Jun 2	Jun 3	Jun 4	Jun 5	Jun 6	Jun 7	Jun 8	Jun 9	Jun 10	Jun 11	Jun 12	Jun 13	Jun 14	Jun 15	Jun 16	Jun 17	Jun 18	Jun 19	Jun 20	Jun 21	Jun 22	Jun 23	Jun 24	Jun 25	Jun 26	Jun 27	Jun 28	Jun 29	Jun 30
Mean significant wave height (ft)	1	2	3	3	2	1	2	3	4	4	3	2	2	2	3	3	2	3	1	2	QC rejected	2	1	1	5	3	2	3	3	2
Mean maximum wave height (ft)	1	2	4	4	3	1	2	4	6	6	5	2	2	2	3	4	2	4	2	2	7	3	1	1	8	4	3	4	3	3
Mean peak period (s)	5	4	4	5	4	5	5	4	5	5	6	5	4	4	4	5	4	4	5	4	6	5	3	4	6	5	4	5	5	4
Mean zero-crossing period (s)	4	3	4	4	4	4	4	4	4	4	4	3	3	3	4	4	3	4	4	3	5	4	3	3	5	4	4	4	4	4
Mean peak wave direction	Econcentration 56%	ENEconcentration 86%	SSEconcentration 59%	Sconcentration 97%	Sconcentration 98%	Sconcentration 83%	Sconcentration 87%	Sconcentration 99%	Sconcentration 99%	Sconcentration 99%	Sconcentration 99%	SSWconcentration 57%	Sconcentration 93%	Wconcentration 66%	SSEconcentration 73%	Sconcentration 98%	WSWconcentration 44%	NNEconcentration 96%	NEconcentration 69%	ENEconcentration 83%	NNEconcentration 99%	NNEconcentration 95%	WSWconcentration 63%	Wconcentration 57%	Nconcentration 80%	NNEconcentration 95%	NNEconcentration 95%	NNEconcentration 99%	NNEconcentration 98%	NNEconcentration 96%
Mean wave direction	ESEconcentration 85%	ENEconcentration 93%	SSEconcentration 68%	Sconcentration 99%	Sconcentration 99%	Sconcentration 93%	Sconcentration 97%	Sconcentration 99%	Sconcentration 100%	Sconcentration 100%	Sconcentration 99%	SSWconcentration 84%	Sconcentration 97%	WSWconcentration 70%	Sconcentration 85%	Sconcentration 99%	SWconcentration 54%	NNEconcentration 97%	NEconcentration 77%	ENEconcentration 94%	NNEconcentration 97%	NNEconcentration 97%	WSWconcentration 62%	WSWconcentration 41%	Nconcentration 80%	NNEconcentration 98%	NNEconcentration 97%	NNEconcentration 99%	NNEconcentration 99%	NNEconcentration 96%
Mean directional spread (°)	35.9	29.8	28.8	26.1	25.1	31.9	31.0	23.2	23.8	24.1	27.0	39.3	28.4	30.9	31.8	26.9	30.2	23.8	34.5	31.3	21.1	33.7	35.2	36.9	26.8	32.5	32.8	24.1	29.5	32.4
Mean wind direction	Econcentration 72%	Econcentration 89%	SSEconcentration 88%	Sconcentration 98%	Sconcentration 91%	Variableconcentration 25%	SSEconcentration 79%	Sconcentration 100%	Sconcentration 100%	Sconcentration 99%	SWconcentration 88%	WSWconcentration 67%	Sconcentration 95%	WSWconcentration 76%	Sconcentration 95%	Sconcentration 71%	WNWconcentration 42%	Nconcentration 97%	ENEconcentration 79%	ENEconcentration 85%	Nconcentration 98%	Nconcentration 60%	SWconcentration 76%	WSWconcentration 81%	Nconcentration 88%	NNEconcentration 99%	NNEconcentration 100%	NNEconcentration 98%	Nconcentration 94%	Nconcentration 92%
Mean wind speed (mph)	8	11	17	15	15	6	11	19	21	22	12	11	12	10	16	13	10	12	6	11	19	9	10	9	19	14	13	13	10	6
Mean water temperature(°C)	11.9	11.4	11.1	11.1	11.5	12.4	12.7	12.5	12.3	12.3	12.3	12.7	12.6	12.7	12.7	12.4	12.8	12.0	12.3	12.7	12.1	12.4	11.7	11.9	11.6	11.5	11.5	11.7	12.1	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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