M2 wave buoy daily means for Jul 2020

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

Last observation shown Fri, Jul 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 1.2–4.6 ft), while mean peak wave period was 4.8 seconds (10th–90th percentile 3.2–6.6 seconds). Typical wind was 12.3 mph (10th–90th percentile 5.1–21 mph) and mean water temperature was 13.6°C (10th–90th percentile 12.7–14.4°C). All 2,976 checked values passed quality control. Across 8 comparable years, mean wave height was the same as the same-month mean of 2.5 ft and mean wave period was the same as the same-month mean of 4.8 seconds.

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

Typical Significant Wave Height

1.9ft

Mean: 2.5 ft

P10–P90: 1.2 — 4.6 ft

Recorded extremes

0.4 — 7.3 ft

Available for 248 of 744 hourly samples

Mean Observed Wave Period

4.8secs

P10–P90: 3.2 — 6.6secs

Recorded extremes

2.1 — 24.4secs

Available for 248 of 744 hourly samples

Typical Observed Wind

WSW, 12.3mph

Mean: 12.7 mph

P10–P90: 5.1 — 21 mph

Recorded extremes

0.7 — 32.6 mph

Circular concentration: 47%

Mean Water Temperature

13.6°C

P10–P90: 12.7 — 14.4°C

Recorded extremes

12.3 — 15.3°C

Compared With Previous Julys

Historical baseline from 5,375 observations across 8 years.

Wave Height: 2.5ft; 0ft above mean; Historical mean 2.493ft
Wave Period: 4.8s; In line with the historical mean; Historical mean 4.8s
Water Temperature: 13.6°C; 0.1°C below mean; Historical mean 13.7°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 Jul 2020Last observation shown Jul 2020
Metric	Jul 1	Jul 2	Jul 3	Jul 4	Jul 5	Jul 6	Jul 7	Jul 8	Jul 9	Jul 10	Jul 11	Jul 12	Jul 13	Jul 14	Jul 15	Jul 16	Jul 17	Jul 18	Jul 19	Jul 20	Jul 21	Jul 22	Jul 23	Jul 24	Jul 25	Jul 26	Jul 27	Jul 28	Jul 29	Jul 30	Jul 31
Mean significant wave height (ft)	1	2	5	3	6	4	2	2	3	3	2	2	2	2	2	1	2	2	1	2	1	2	2	2	2	3	5	4	2	4	3
Mean maximum wave height (ft)	2	2	7	5	9	6	2	3	4	4	2	3	3	3	2	1	3	3	1	2	0	3	3	3	3	3	7	6	2	6	4
Mean peak period (s)	6	5	6	7	6	5	4	7	5	5	3	4	5	3	4	4	4	5	4	4	4	7	5	5	6	4	6	5	4	5	4
Mean zero-crossing period (s)	4	4	4	5	5	4	4	4	4	4	3	3	4	3	3	3	3	4	4	3	3	4	4	4	4	4	5	4	4	4	4
Mean peak wave direction	SSEconcentration 89%	SSEconcentration 35%	Sconcentration 98%	Sconcentration 99%	SWconcentration 81%	NWconcentration 56%	Sconcentration 38%	SSEconcentration 97%	ENEconcentration 64%	NNWconcentration 87%	NWconcentration 45%	Sconcentration 100%	Sconcentration 98%	WNWconcentration 94%	WNWconcentration 73%	SWconcentration 38%	SSWconcentration 75%	Sconcentration 99%	Variableconcentration 25%	NWconcentration 63%	Variableconcentration 19%	SSEconcentration 73%	SSEconcentration 86%	SSEconcentration 87%	SSEconcentration 98%	SSWconcentration 83%	Sconcentration 89%	NWconcentration 89%	NWconcentration 40%	Sconcentration 99%	Sconcentration 99%
Mean wave direction	SSEconcentration 97%	SSEconcentration 35%	Sconcentration 98%	Sconcentration 100%	SWconcentration 95%	WNWconcentration 57%	SSEconcentration 52%	ESEconcentration 92%	ENEconcentration 73%	NNWconcentration 95%	NWconcentration 41%	Sconcentration 100%	Sconcentration 99%	WNWconcentration 95%	Wconcentration 99%	WSWconcentration 73%	SSWconcentration 92%	Sconcentration 98%	Nconcentration 53%	NNWconcentration 55%	SEconcentration 47%	SSEconcentration 97%	SSEconcentration 97%	SSEconcentration 89%	Sconcentration 98%	SSWconcentration 88%	SSWconcentration 85%	NWconcentration 90%	Variableconcentration 12%	Sconcentration 100%	Sconcentration 99%
Mean directional spread (°)	30.9	33.0	19.7	26.9	32.9	35.5	33.2	27.6	32.7	28.5	35.9	21.3	23.4	30.2	32.5	35.9	22.9	22.9	40.3	31.8	40.1	28.3	31.6	35.3	27.6	27.2	23.7	29.9	34.6	25.0	27.8
Mean wind direction	Variableconcentration 11%	Wconcentration 60%	SSWconcentration 98%	SSWconcentration 95%	WSWconcentration 94%	Wconcentration 89%	SWconcentration 37%	NEconcentration 94%	NNEconcentration 96%	NWconcentration 90%	WSWconcentration 54%	Sconcentration 98%	SWconcentration 74%	WNWconcentration 89%	WNWconcentration 95%	WSWconcentration 83%	SSWconcentration 95%	SWconcentration 67%	NWconcentration 73%	WNWconcentration 43%	SWconcentration 37%	SSWconcentration 96%	SWconcentration 88%	SSEconcentration 73%	SWconcentration 93%	SWconcentration 91%	SWconcentration 58%	WNWconcentration 98%	SWconcentration 55%	SSEconcentration 96%	Sconcentration 90%
Mean wind speed (mph)	3	9	20	13	23	15	10	9	11	14	10	16	11	14	13	11	13	10	9	11	6	15	10	11	12	15	19	18	12	18	14
Mean water temperature(°C)	13.2	13.0	12.8	13.0	12.7	12.9	12.8	12.8	12.7	12.8	13.1	13.5	14.0	13.9	13.8	14.0	14.0	14.3	14.1	13.7	13.9	14.0	14.1	13.8	13.9	13.9	14.1	13.9	14.1	14.1	14.1

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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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