M2 wave buoy daily means for Mar 2025

Daily means from the M2 wave buoy for Mar 2025, including available wave height, period, direction, wind and sea temperature data.

Last observation shown Mon, Mar 31, 2025, 23:00

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

Monthly means for 2025

Period Summary

Hog Says

719 wave-buoy observations covered all 31 days. Typical wave height was 2.7 ft (10th–90th percentile 1.2–5.8 ft), while mean peak wave period was 5.2 seconds (10th–90th percentile 2.9–8.3 seconds). Typical wind was 14.7 mph (10th–90th percentile 7.1–25 mph) and mean water temperature was 9°C (10th–90th percentile 8.8–9.1°C). 16 of 4,314 checked values (0.4%) were excluded by quality control. Across 14 comparable years, mean wave height was below the same-month mean of 3.9 ft and mean wave period was below the same-month mean of 5.7 seconds.

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

Typical Significant Wave Height

2.7ft

Mean: 3.2 ft

P10–P90: 1.2 — 5.8 ft

Recorded extremes

0.8 — 8.5 ft

Mean Observed Wave Period

5.2secs

P10–P90: 2.9 — 8.3secs

Recorded extremes

2.5 — 14.3secs

Available for 703 of 719 hourly samples

Typical Observed Wind

Variable, 14.7mph

Mean: 15.3 mph

P10–P90: 7.1 — 25 mph

Recorded extremes

1.3 — 33.8 mph

Circular concentration: 11%

Mean Water Temperature

9°C

P10–P90: 8.8 — 9.1°C

Recorded extremes

8.7 — 9.4°C

Compared With Previous Marchs

Historical baseline from 9,973 observations across 14 years.

Wave Height: 3.2ft; 0.7ft below mean; Historical mean 3.937ft
Wave Period: 5.2s; 0.5s below mean; Historical mean 5.7s
Water Temperature: 9°C; 0.6°C above mean; Historical mean 8.4°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 2025Last observation shown Mar 2025
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)	2	2	2	4	QC rejected	5	3	3	3	5	4	5	3	2	2	2	3	4	2	2	3	4	QC rejected	2	2	2	5	4	5	3	1
Mean maximum wave height (ft)	3	3	3	7	11	8	4	4	5	7	8	8	5	3	3	3	5	6	4	3	5	6	10	4	3	3	8	7	7	5	2
Mean peak period (s)	3	4	3	5	7	6	5	4	10	7	5	5	5	4	4	3	5	5	4	5	10	10	6	4	3	4	5	5	5	5	4
Mean zero-crossing period (s)	3	4	3	4	5	4	4	4	5	4	4	4	4	3	3	3	4	4	4	4	4	5	5	3	3	3	4	4	4	4	4
Mean peak wave direction	SSWconcentration 75%	SSEconcentration 73%	SSWconcentration 53%	Sconcentration 93%	SSWconcentration 99%	Sconcentration 99%	Sconcentration 96%	SEconcentration 68%	Sconcentration 100%	NNEconcentration 37%	NNEconcentration 95%	Nconcentration 98%	NEconcentration 91%	NEconcentration 50%	ENEconcentration 74%	NNEconcentration 93%	ENEconcentration 90%	Econcentration 87%	Econcentration 70%	ESEconcentration 43%	SSEconcentration 78%	Sconcentration 65%	NNEconcentration 99%	Nconcentration 65%	NWconcentration 63%	Sconcentration 72%	Sconcentration 91%	Wconcentration 66%	SWconcentration 72%	WNWconcentration 53%	SSEconcentration 72%
Mean wave direction	Sconcentration 91%	SSEconcentration 69%	SSWconcentration 58%	SSWconcentration 93%	SSWconcentration 100%	Sconcentration 99%	Sconcentration 99%	SEconcentration 80%	ESEconcentration 72%	NNEconcentration 97%	NNEconcentration 94%	Nconcentration 98%	NEconcentration 95%	NEconcentration 96%	ENEconcentration 83%	NNEconcentration 94%	ENEconcentration 98%	Econcentration 98%	ESEconcentration 86%	ESEconcentration 74%	SEconcentration 94%	SSEconcentration 63%	Nconcentration 100%	Nconcentration 67%	WNWconcentration 66%	SSEconcentration 57%	Sconcentration 92%	Wconcentration 86%	SWconcentration 85%	Wconcentration 44%	SSEconcentration 92%
Mean directional spread (°)	214.7	197.4	206.4	160.3	108.8	142.0	166.9	155.6	81.3	112.5	162.3	152.7	199.8	168.5	185.7	185.6	185.7	211.0	205.0	154.6	138.1	96.7	127.3	196.9	154.7	200.7	152.9	181.5	154.9	215.8	210.4
Mean wind direction	SWconcentration 97%	SSWconcentration 70%	SWconcentration 95%	SSWconcentration 98%	SSWconcentration 98%	Sconcentration 99%	SSEconcentration 90%	Econcentration 95%	NEconcentration 97%	NEconcentration 97%	NNEconcentration 85%	Nconcentration 94%	Nconcentration 88%	NNEconcentration 70%	NNEconcentration 86%	NEconcentration 94%	Econcentration 99%	Econcentration 92%	Econcentration 84%	Econcentration 97%	ESEconcentration 92%	Econcentration 42%	Nconcentration 99%	WNWconcentration 38%	Wconcentration 73%	SSWconcentration 84%	Sconcentration 98%	Wconcentration 97%	SWconcentration 84%	WSWconcentration 77%	SSEconcentration 82%
Mean wind speed (mph)	12	13	13	22	28	23	13	11	12	19	17	22	13	12	9	13	17	14	9	9	14	12	24	12	11	13	24	20	22	15	10
Mean water temperature(°C)	9.0	9.0	9.0	9.0	8.9	8.9	8.9	8.9	9.0	9.0	9.1	9.0	9.0	9.0	9.0	9.0	8.9	8.9	8.9	9.0	8.9	8.9	8.9	9.0	8.9	9.0	9.0	9.0	8.9	9.0	9.0

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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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