M2 wave buoy daily means for Mar 2023

Daily means from the M2 wave buoy for Mar 2023, including available wave height, period, direction, wind and sea temperature data.

Last observation shown Fri, Mar 31, 2023, 23:00

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

Monthly means for 2023

Period Summary

Hog Says

729 wave-buoy observations covered all 31 days. Typical wave height was 4.6 ft (10th–90th percentile 2.3–7.7 ft), while mean peak wave period was 7.1 seconds (10th–90th percentile 4–12.5 seconds). Typical wind was 19.5 mph (10th–90th percentile 9.7–28.2 mph) and mean water temperature was 8.9°C (10th–90th percentile 8.7–9.1°C). 11 of 4,374 checked values (0.3%) were excluded by quality control. Across 12 comparable years, mean wave height was above the same-month mean of 3.7 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

4.6ft

Mean: 4.8 ft

P10–P90: 2.3 — 7.7 ft

Recorded extremes

1.2 — 15.4 ft

Mean Observed Wave Period

7.1secs

P10–P90: 4 — 12.5secs

Recorded extremes

2.8 — 20secs

Available for 718 of 729 hourly samples

Typical Observed Wind

Variable, 19.5mph

Mean: 19.2 mph

P10–P90: 9.7 — 28.2 mph

Recorded extremes

2 — 38.8 mph

Circular concentration: 17%

Mean Water Temperature

8.9°C

P10–P90: 8.7 — 9.1°C

Recorded extremes

8.5 — 9.2°C

Compared With Previous Marchs

Historical baseline from 8,517 observations across 12 years.

Wave Height: 4.8ft; 1.1ft above mean; Historical mean 3.74ft
Wave Period: 7.1s; 1.6s above mean; Historical mean 5.5s
Water Temperature: 8.9°C; 0.6°C above mean; Historical mean 8.3°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 Mar 2023Last observation shown Mar 2023
Metric	Mar 1	Mar 2	Mar 3	Mar 4	Mar 5	Mar 6	Mar 7	Mar 8	Mar 9	Mar 10	Mar 11	Mar 12	Mar 13	Mar 14	Mar 15	Mar 16	Mar 17	Mar 18	Mar 19	Mar 20	Mar 21	Mar 22	Mar 23	Mar 24	Mar 25	Mar 26	Mar 27	Mar 28	Mar 29	Mar 30	Mar 31
Mean significant wave height (ft)	5	3	2	2	2	3	3	4	9	8	4	5	8	5	5	7	4	3	4	4	6	8	7	7	5	4	2	6	6	5	5
Mean maximum wave height (ft)	7	6	3	3	4	5	5	7	14	13	6	8	12	8	8	12	7	5	6	7	9	13	11	11	8	6	4	9	9	7	9
Mean peak period (s)	5	5	-	-	5	4	6	6	7	8	6	6	9	5	8	7	6	8	4	6	6	8	8	7	7	6	8	7	7	7	10
Mean zero-crossing period (s)	4	4	4	4	3	4	4	4	6	6	4	5	6	5	5	5	4	5	4	4	5	5	5	5	5	4	4	5	5	5	6
Mean peak wave direction	NEconcentration 98%	NEconcentration 96%	SSEconcentration 78%	Sconcentration 73%	WNWconcentration 65%	NWconcentration 87%	NNEconcentration 63%	Econcentration 82%	ENEconcentration 97%	ENEconcentration 62%	SSEconcentration 97%	Sconcentration 97%	Sconcentration 76%	NWconcentration 57%	Sconcentration 90%	Sconcentration 100%	Sconcentration 99%	SSWconcentration 48%	Wconcentration 58%	Sconcentration 99%	Sconcentration 99%	Sconcentration 99%	Sconcentration 99%	Sconcentration 99%	SWconcentration 74%	Econcentration 66%	Sconcentration 68%	Sconcentration 100%	Sconcentration 100%	Sconcentration 100%	Sconcentration 86%
Mean wave direction	NEconcentration 99%	ENEconcentration 99%	ESEconcentration 88%	Variableconcentration 7%	WNWconcentration 93%	NWconcentration 88%	NNEconcentration 71%	Econcentration 98%	Econcentration 97%	ENEconcentration 79%	SSEconcentration 100%	Sconcentration 98%	Sconcentration 80%	WNWconcentration 75%	SSEconcentration 58%	Sconcentration 100%	Sconcentration 99%	SSWconcentration 60%	Wconcentration 62%	Sconcentration 100%	Sconcentration 100%	Sconcentration 99%	Sconcentration 100%	Sconcentration 99%	SSWconcentration 89%	Econcentration 70%	Econcentration 46%	Sconcentration 100%	Sconcentration 100%	Sconcentration 100%	SSEconcentration 97%
Mean directional spread (°)	159.5	188.0	113.0	101.4	167.5	173.0	184.6	139.6	99.1	125.6	160.6	155.3	102.8	190.4	133.9	100.5	137.5	118.5	182.9	141.8	126.7	108.8	112.7	111.6	160.0	174.6	124.3	109.0	105.7	113.3	122.0
Mean wind direction	NEconcentration 97%	ENEconcentration 95%	ENEconcentration 91%	Nconcentration 84%	WNWconcentration 95%	NWconcentration 88%	Nconcentration 86%	ENEconcentration 99%	ENEconcentration 96%	NNEconcentration 69%	SEconcentration 80%	SSWconcentration 89%	WSWconcentration 62%	NWconcentration 88%	Sconcentration 78%	Sconcentration 99%	Sconcentration 98%	SWconcentration 47%	WSWconcentration 67%	SSWconcentration 98%	Sconcentration 96%	SSWconcentration 93%	SSWconcentration 97%	SSWconcentration 93%	SWconcentration 73%	NEconcentration 87%	ENEconcentration 31%	Sconcentration 96%	Sconcentration 98%	Sconcentration 88%	Nconcentration 67%
Mean wind speed (mph)	19	15	9	8	15	18	12	23	31	19	19	21	25	22	20	26	17	15	21	19	23	27	24	26	17	15	11	23	23	19	13
Mean water temperature(°C)	8.9	8.9	8.9	8.9	9.0	9.0	9.0	9.0	9.0	9.0	8.8	8.7	8.8	8.8	8.8	8.7	8.8	8.8	8.7	8.8	8.8	8.8	8.8	8.8	8.9	8.9	8.9	8.9	8.9	9.0	9.1

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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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