M2 wave buoy daily means for Dec 2019

Daily means from the M2 wave buoy for Dec 2019, including available wave height, period, direction, wind and sea temperature data.

Last observation shown Tue, Dec 31, 2019, 23:00

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

Monthly means for 2019

Period Summary

Hog Says

744 wave-buoy observations covered all 31 days. Typical wave height was 5 ft (10th–90th percentile 2.7–8.8 ft), while mean peak wave period was 6.6 seconds (10th–90th percentile 4.1–9.7 seconds). Typical wind was 20.6 mph (10th–90th percentile 11–31.9 mph) and mean water temperature was 11.3°C (10th–90th percentile 10.8–11.8°C). All 2,976 checked values passed quality control. Across 9 comparable years, mean wave height was below the same-month mean of 5.8 ft and mean wave period was above the same-month mean of 6.2 seconds.

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

Typical Significant Wave Height

5ft

Mean: 5.4 ft

P10–P90: 2.7 — 8.8 ft

Recorded extremes

1.2 — 14.6 ft

Available for 248 of 744 hourly samples

Mean Observed Wave Period

6.6secs

P10–P90: 4.1 — 9.7secs

Recorded extremes

2.7 — 18.6secs

Available for 248 of 744 hourly samples

Typical Observed Wind

SW, 20.6mph

Mean: 21.2 mph

P10–P90: 11 — 31.9 mph

Recorded extremes

1.6 — 43.4 mph

Circular concentration: 62%

Mean Water Temperature

11.3°C

P10–P90: 10.8 — 11.8°C

Recorded extremes

10.7 — 12.4°C

Compared With Previous Decembers

Historical baseline from 5,675 observations across 9 years.

Wave Height: 5.4ft; 0.4ft below mean; Historical mean 5.774ft
Wave Period: 6.6s; 0.4s above mean; Historical mean 6.2s
Water Temperature: 11.3°C; 0.2°C below mean; Historical mean 11.5°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 Dec 2019Last observation shown Dec 2019
Metric	Dec 1	Dec 2	Dec 3	Dec 4	Dec 5	Dec 6	Dec 7	Dec 8	Dec 9	Dec 10	Dec 11	Dec 12	Dec 13	Dec 14	Dec 15	Dec 16	Dec 17	Dec 18	Dec 19	Dec 20	Dec 21	Dec 22	Dec 23	Dec 24	Dec 25	Dec 26	Dec 27	Dec 28	Dec 29	Dec 30	Dec 31
Mean significant wave height (ft)	3	2	3	5	6	5	6	9	7	10	6	4	8	7	6	5	2	7	8	5	3	4	5	4	3	5	4	7	9	6	3
Mean maximum wave height (ft)	4	3	4	8	10	8	8	13	9	14	9	6	12	10	8	7	3	10	12	7	4	6	8	6	4	7	6	12	12	9	4
Mean peak period (s)	5	4	4	6	6	6	5	7	6	8	7	6	6	6	6	7	6	6	11	9	9	12	5	5	6	6	8	6	7	7	5
Mean zero-crossing period (s)	4	3	4	5	5	5	4	5	5	6	5	4	5	5	5	5	4	5	6	5	5	5	5	4	4	5	5	5	5	5	4
Mean peak wave direction	ENEconcentration 55%	NWconcentration 73%	SSWconcentration 63%	Sconcentration 100%	SSWconcentration 97%	SWconcentration 66%	SWconcentration 84%	SSWconcentration 89%	NNWconcentration 79%	Sconcentration 99%	SSWconcentration 81%	SSWconcentration 78%	Wconcentration 96%	SWconcentration 90%	SSWconcentration 86%	Sconcentration 99%	SSWconcentration 86%	Sconcentration 98%	Sconcentration 99%	Sconcentration 99%	Sconcentration 100%	Sconcentration 83%	SWconcentration 87%	SWconcentration 49%	SWconcentration 51%	SSEconcentration 94%	Sconcentration 100%	Sconcentration 100%	Sconcentration 100%	Sconcentration 99%	NEconcentration 93%
Mean wave direction	ENEconcentration 69%	NWconcentration 74%	SSWconcentration 84%	SSWconcentration 100%	SSWconcentration 99%	SWconcentration 86%	SSWconcentration 89%	SSWconcentration 97%	NWconcentration 80%	SSWconcentration 98%	SSWconcentration 94%	SSWconcentration 90%	Wconcentration 97%	SWconcentration 93%	SSWconcentration 95%	SSWconcentration 99%	SSWconcentration 96%	SSEconcentration 99%	Sconcentration 99%	Sconcentration 98%	Sconcentration 100%	SSWconcentration 91%	SWconcentration 97%	SWconcentration 68%	SWconcentration 59%	SEconcentration 96%	Sconcentration 100%	Sconcentration 100%	Sconcentration 100%	Sconcentration 92%	ENEconcentration 94%
Mean directional spread (°)	31.3	28.8	25.0	17.6	20.2	27.4	20.2	26.0	29.4	20.7	24.6	28.3	24.4	22.0	27.4	21.1	31.3	24.4	16.9	19.2	22.7	29.5	25.0	26.0	28.5	33.0	18.8	17.8	18.1	21.3	27.1
Mean wind direction	NEconcentration 72%	WNWconcentration 94%	SWconcentration 86%	SWconcentration 93%	SWconcentration 95%	WSWconcentration 89%	SWconcentration 87%	WSWconcentration 98%	WNWconcentration 76%	SWconcentration 84%	WSWconcentration 96%	WSWconcentration 77%	Wconcentration 99%	WSWconcentration 94%	SWconcentration 89%	SWconcentration 96%	WSWconcentration 95%	SSEconcentration 92%	Sconcentration 89%	WSWconcentration 84%	SWconcentration 64%	WSWconcentration 92%	WSWconcentration 93%	WSWconcentration 72%	Variableconcentration 29%	SSEconcentration 55%	Sconcentration 98%	Sconcentration 99%	Sconcentration 99%	SSWconcentration 43%	ESEconcentration 70%
Mean wind speed (mph)	13	15	16	21	24	21	25	30	24	34	22	19	31	29	22	19	11	28	22	16	11	18	22	21	15	15	19	28	30	22	12
Mean water temperature(°C)	11.9	11.6	11.3	11.5	11.4	11.5	11.8	11.7	11.8	11.7	11.7	11.6	11.6	11.5	11.4	11.3	11.3	11.3	11.2	11.2	11.1	11.1	11.0	11.0	10.9	10.9	10.9	10.8	10.8	10.7	10.7

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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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