M2 wave buoy daily means for Nov 2021

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

Last observation shown Tue, Nov 30, 2021, 23:00

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

Monthly means for 2021

Period Summary

Hog Says

709 wave-buoy observations covered all 30 days. Typical wave height was 3.6 ft (10th–90th percentile 1.5–7.2 ft), while mean peak wave period was 5 seconds (10th–90th percentile 3.5–6.8 seconds). Typical wind was 19.5 mph (10th–90th percentile 9.6–28.3 mph) and mean water temperature was 13.7°C (10th–90th percentile 12.5–14.7°C). 1 of 4,254 checked values (0%) were excluded by quality control. Across 10 comparable years, mean wave height was below the same-month mean of 5 ft and mean wave period was below the same-month mean of 6 seconds.

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

Typical Significant Wave Height

3.6ft

Mean: 4.3 ft

P10–P90: 1.5 — 7.2 ft

Recorded extremes

1 — 17.4 ft

Mean Observed Wave Period

5secs

P10–P90: 3.5 — 6.8secs

Recorded extremes

2.3 — 9.5secs

Available for 708 of 709 hourly samples

Typical Observed Wind

W, 19.5mph

Mean: 19.3 mph

P10–P90: 9.6 — 28.3 mph

Recorded extremes

1.3 — 46.2 mph

Circular concentration: 61%

Mean Water Temperature

13.7°C

P10–P90: 12.5 — 14.7°C

Recorded extremes

12.3 — 14.8°C

Compared With Previous Novembers

Historical baseline from 7,059 observations across 10 years.

Wave Height: 4.3ft; 0.7ft below mean; Historical mean 4.954ft
Wave Period: 5s; 1s below mean; Historical mean 6s
Water Temperature: 13.7°C; 0.5°C above mean; Historical mean 13.2°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 Nov 2021Last observation shown Nov 2021
Metric	Nov 1	Nov 2	Nov 3	Nov 4	Nov 5	Nov 6	Nov 7	Nov 8	Nov 9	Nov 10	Nov 11	Nov 12	Nov 13	Nov 14	Nov 15	Nov 16	Nov 17	Nov 18	Nov 19	Nov 20	Nov 21	Nov 22	Nov 23	Nov 24	Nov 25	Nov 26	Nov 27	Nov 28	Nov 29	Nov 30
Mean significant wave height (ft)	7	3	6	5	3	5	4	4	4	2	5	8	3	2	3	3	4	4	3	3	QC rejected	2	2	3	6	9	12	4	3	5
Mean maximum wave height (ft)	10	5	8	8	4	7	6	5	6	2	7	11	4	3	3	3	5	5	3	4	9	3	2	4	9	13	18	6	3	7
Mean peak period (s)	5	4	6	6	4	5	5	5	6	6	6	7	5	4	4	4	4	4	4	4	6	4	4	4	6	6	8	5	4	5
Mean zero-crossing period (s)	5	4	5	4	4	4	4	4	4	4	4	5	4	3	4	3	4	4	4	4	5	4	3	3	5	5	6	4	4	4
Mean peak wave direction	Wconcentration 98%	WNWconcentration 91%	Nconcentration 99%	Nconcentration 99%	WNWconcentration 82%	SSWconcentration 83%	WNWconcentration 96%	Sconcentration 69%	Sconcentration 97%	SSEconcentration 81%	Sconcentration 86%	SSWconcentration 71%	Variableconcentration 26%	Sconcentration 98%	Variableconcentration 27%	SWconcentration 85%	WSWconcentration 92%	SWconcentration 92%	SSWconcentration 93%	WSWconcentration 82%	Nconcentration 97%	NNEconcentration 91%	NNWconcentration 82%	WNWconcentration 76%	NNWconcentration 86%	NWconcentration 82%	Nconcentration 100%	NNWconcentration 82%	WNWconcentration 57%	WSWconcentration 87%
Mean wave direction	Wconcentration 98%	Wconcentration 90%	Nconcentration 99%	Nconcentration 100%	WNWconcentration 84%	SWconcentration 94%	WNWconcentration 95%	Sconcentration 70%	Sconcentration 99%	Sconcentration 95%	Sconcentration 97%	SSWconcentration 80%	Variableconcentration 28%	Sconcentration 98%	NWconcentration 36%	SWconcentration 85%	WSWconcentration 93%	SWconcentration 98%	SSWconcentration 99%	WSWconcentration 80%	Nconcentration 97%	NNEconcentration 91%	NNWconcentration 95%	WNWconcentration 77%	NNWconcentration 89%	NWconcentration 84%	Nconcentration 100%	NNWconcentration 88%	WNWconcentration 60%	WSWconcentration 89%
Mean directional spread (°)	31.3	27.8	25.1	26.4	31.0	30.0	30.0	27.1	26.0	36.2	27.9	21.9	35.0	24.7	32.8	27.7	27.3	28.8	29.3	29.5	23.8	35.6	31.4	27.5	24.3	22.7	19.9	26.8	33.1	25.8
Mean wind direction	Wconcentration 99%	WNWconcentration 91%	NNWconcentration 98%	NNWconcentration 98%	Wconcentration 95%	WSWconcentration 91%	Wconcentration 98%	SSWconcentration 100%	WSWconcentration 81%	Wconcentration 85%	SSWconcentration 87%	WSWconcentration 80%	WNWconcentration 82%	Sconcentration 98%	WNWconcentration 67%	WSWconcentration 90%	Wconcentration 97%	WSWconcentration 99%	WSWconcentration 94%	Wconcentration 80%	Nconcentration 94%	Nconcentration 89%	NWconcentration 97%	WNWconcentration 72%	NWconcentration 89%	NWconcentration 92%	NNWconcentration 98%	NWconcentration 83%	WNWconcentration 69%	Wconcentration 90%
Mean wind speed (mph)	26	17	23	22	17	23	20	19	17	8	21	26	11	15	13	16	21	18	14	19	23	11	10	18	26	33	33	19	14	24
Mean water temperature(°C)	14.7	14.8	14.7	14.6	14.6	14.5	14.3	14.2	14.2	14.1	14.0	14.2	13.9	13.8	13.8	13.7	13.6	13.5	13.4	13.3	13.2	13.2	13.1	13.1	13.0	12.9	12.7	12.4	12.4	12.4

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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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