M2 wave buoy daily means for Aug 2015

Daily means from the M2 wave buoy for Aug 2015, including available wave height, period, direction, wind and sea temperature data.

Last observation shown Mon, Aug 31, 2015, 23:00

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

Monthly means for 2015

Period Summary

Hog Says

742 wave-buoy observations covered all 31 days. Typical wave height was 2.2 ft (10th–90th percentile 0.8–4.7 ft), while mean peak wave period was 5.5 seconds (10th–90th percentile 3.4–8.1 seconds). Typical wind was 12.3 mph (10th–90th percentile 3.9–20.6 mph) and mean water temperature was 13.4°C (10th–90th percentile 12.4–14.2°C). 5 of 4,452 checked values (0.1%) were excluded by quality control. Across 4 comparable years, mean wave height was below the same-month mean of 2.8 ft and mean wave period was above the same-month mean of 5.1 seconds.

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

Typical Significant Wave Height

2.2ft

Mean: 2.5 ft

P10–P90: 0.8 — 4.7 ft

Recorded extremes

0.4 — 8.6 ft

Mean Observed Wave Period

5.5secs

P10–P90: 3.4 — 8.1secs

Recorded extremes

2.1 — 10.4secs

Available for 737 of 742 hourly samples

Typical Observed Wind

SSW, 12.3mph

Mean: 12.5 mph

P10–P90: 3.9 — 20.6 mph

Recorded extremes

0.2 — 32.1 mph

Circular concentration: 51%

Mean Water Temperature

13.4°C

P10–P90: 12.4 — 14.2°C

Recorded extremes

11.9 — 16°C

Compared With Previous Augusts

Historical baseline from 2,138 observations across 4 years.

Wave Height: 2.5ft; 0.3ft below mean; Historical mean 2.789ft
Wave Period: 5.5s; 0.4s above mean; Historical mean 5.1s
Water Temperature: 13.4°C; 1.3°C below mean; Historical mean 14.7°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 Aug 2015Last observation shown Aug 2015
Metric	Aug 1	Aug 2	Aug 3	Aug 4	Aug 5	Aug 6	Aug 7	Aug 8	Aug 9	Aug 10	Aug 11	Aug 12	Aug 13	Aug 14	Aug 15	Aug 16	Aug 17	Aug 18	Aug 19	Aug 20	Aug 21	Aug 22	Aug 23	Aug 24	Aug 25	Aug 26	Aug 27	Aug 28	Aug 29	Aug 30	Aug 31
Mean significant wave height (ft)	2	2	5	7	4	3	1	2	4	3	2	1	1	2	2	1	1	1	3	3	4	2	2	1	2	5	4	4	3	1	1
Mean maximum wave height (ft)	3	3	8	9	6	4	2	2	5	4	2	0	1	2	3	1	0	0	5	4	5	3	3	1	3	7	6	6	5	1	1
Mean peak period (s)	5	4	6	7	6	8	8	5	5	5	5	5	4	4	4	4	5	6	5	5	6	6	4	4	6	7	6	6	5	7	5
Mean zero-crossing period (s)	4	4	5	5	4	5	5	4	4	4	4	4	3	3	3	4	4	4	4	4	4	4	3	3	4	5	4	4	4	4	4
Mean peak wave direction	Sconcentration 91%	SSEconcentration 96%	Sconcentration 99%	Sconcentration 99%	Sconcentration 99%	Sconcentration 92%	Sconcentration 99%	Sconcentration 79%	Sconcentration 99%	Sconcentration 99%	SWconcentration 60%	SSEconcentration 41%	NEconcentration 65%	NNWconcentration 51%	Wconcentration 45%	Sconcentration 93%	SSEconcentration 79%	Sconcentration 53%	Sconcentration 99%	SSEconcentration 98%	Sconcentration 99%	Sconcentration 90%	ENEconcentration 41%	SSWconcentration 78%	Sconcentration 81%	Sconcentration 99%	Sconcentration 99%	Sconcentration 99%	Sconcentration 99%	Sconcentration 96%	NNEconcentration 34%
Mean wave direction	Sconcentration 96%	SSEconcentration 98%	Sconcentration 100%	Sconcentration 99%	Sconcentration 99%	SSWconcentration 87%	SSEconcentration 99%	Sconcentration 94%	Sconcentration 99%	Sconcentration 97%	SWconcentration 85%	ESEconcentration 72%	ENEconcentration 78%	NNWconcentration 54%	Wconcentration 53%	SSEconcentration 98%	SSEconcentration 96%	Sconcentration 87%	Sconcentration 98%	SSEconcentration 99%	Sconcentration 100%	SSEconcentration 95%	ESEconcentration 37%	Sconcentration 98%	SSWconcentration 75%	Sconcentration 100%	Sconcentration 100%	Sconcentration 100%	Sconcentration 99%	SSEconcentration 95%	NEconcentration 42%
Mean directional spread (°)	29.9	29.2	24.3	21.4	22.9	23.1	25.3	24.9	20.9	20.7	33.3	42.6	26.0	30.8	32.8	33.2	34.8	33.8	23.6	26.6	23.3	30.4	32.5	30.7	24.6	17.2	21.0	21.5	24.8	31.4	31.3
Mean wind direction	SSWconcentration 92%	SSEconcentration 92%	Sconcentration 97%	SSWconcentration 99%	Sconcentration 95%	SWconcentration 69%	WNWconcentration 56%	SSWconcentration 82%	SSWconcentration 98%	SWconcentration 86%	Wconcentration 71%	Variableconcentration 24%	NNEconcentration 91%	NNWconcentration 88%	WSWconcentration 78%	Sconcentration 83%	SEconcentration 81%	WSWconcentration 83%	Sconcentration 91%	Sconcentration 83%	Sconcentration 98%	SEconcentration 63%	Variableconcentration 28%	WSWconcentration 65%	Sconcentration 64%	SSWconcentration 94%	SWconcentration 96%	SSWconcentration 98%	SSWconcentration 98%	Wconcentration 33%	NNWconcentration 90%
Mean wind speed (mph)	11	13	22	21	19	12	4	13	15	14	8	4	10	11	13	7	5	7	15	15	19	10	13	9	13	19	17	19	14	5	9
Mean water temperature(°C)	12.5	12.4	12.3	12.5	12.7	12.9	13.4	13.0	13.1	13.3	13.8	14.1	13.9	14.0	13.8	13.6	13.7	13.4	13.2	13.1	13.4	13.8	13.7	14.1	13.7	14.2	14.0	13.8	13.8	13.6	13.5

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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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