M2 wave buoy daily means for Jul 2015

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

Last observation shown Fri, Jul 31, 2015, 23:00

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

Monthly means for 2015

Period Summary

Hog Says

740 wave-buoy observations covered all 31 days. Typical wave height was 2.6 ft (10th–90th percentile 1.3–4.6 ft), while mean peak wave period was 5.3 seconds (10th–90th percentile 3.4–7.9 seconds). Typical wind was 13.3 mph (10th–90th percentile 5.9–21.5 mph) and mean water temperature was 12.4°C (10th–90th percentile 11.5–13.5°C). 2 of 4,440 checked values (0%) were excluded by quality control. Across 4 comparable years, mean wave height was above the same-month mean of 2.5 ft and mean wave period was above the same-month mean of 4.7 seconds.

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

Typical Significant Wave Height

2.6ft

Mean: 2.8 ft

P10–P90: 1.3 — 4.6 ft

Recorded extremes

0.8 — 9.4 ft

Mean Observed Wave Period

5.3secs

P10–P90: 3.4 — 7.9secs

Recorded extremes

2 — 15.1secs

Available for 738 of 740 hourly samples

Typical Observed Wind

SSW, 13.3mph

Mean: 13.4 mph

P10–P90: 5.9 — 21.5 mph

Recorded extremes

0 — 34.6 mph

Circular concentration: 42%

Mean Water Temperature

12.4°C

P10–P90: 11.5 — 13.5°C

Recorded extremes

11 — 15.1°C

Compared With Previous Julys

Historical baseline from 2,784 observations across 4 years.

Wave Height: 2.8ft; 0.3ft above mean; Historical mean 2.526ft
Wave Period: 5.3s; 0.6s above mean; Historical mean 4.7s
Water Temperature: 12.4°C; 1.4°C below mean; Historical mean 13.8°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 Jul 2015Last observation shown Jul 2015
Metric	Jul 1	Jul 2	Jul 3	Jul 4	Jul 5	Jul 6	Jul 7	Jul 8	Jul 9	Jul 10	Jul 11	Jul 12	Jul 13	Jul 14	Jul 15	Jul 16	Jul 17	Jul 18	Jul 19	Jul 20	Jul 21	Jul 22	Jul 23	Jul 24	Jul 25	Jul 26	Jul 27	Jul 28	Jul 29	Jul 30	Jul 31
Mean significant wave height (ft)	2	2	2	4	3	4	4	4	2	3	3	3	2	2	1	1	4	4	3	3	4	2	2	1	3	4	4	4	3	3	2
Mean maximum wave height (ft)	2	3	2	6	4	6	6	5	3	4	4	5	3	3	2	1	6	6	4	4	5	2	2	2	4	6	5	6	4	4	2
Mean peak period (s)	6	4	5	5	7	6	8	6	5	4	4	6	5	6	4	4	6	5	5	5	7	6	4	4	5	6	9	5	4	4	4
Mean zero-crossing period (s)	4	4	3	4	4	4	5	4	4	4	4	5	4	4	3	3	4	4	4	4	4	4	3	3	4	4	5	4	4	4	4
Mean peak wave direction	SSEconcentration 71%	Sconcentration 95%	SSEconcentration 65%	SEconcentration 59%	Sconcentration 99%	Sconcentration 99%	Sconcentration 99%	Variableconcentration 23%	ENEconcentration 45%	Sconcentration 99%	Sconcentration 90%	Sconcentration 99%	SSEconcentration 98%	SEconcentration 33%	NNEconcentration 60%	NEconcentration 51%	Sconcentration 93%	SSWconcentration 93%	Sconcentration 80%	SSEconcentration 98%	Sconcentration 99%	SSEconcentration 90%	SWconcentration 63%	Variableconcentration 18%	Nconcentration 58%	Sconcentration 98%	Sconcentration 100%	WNWconcentration 88%	NWconcentration 95%	Nconcentration 54%	Sconcentration 85%
Mean wave direction	SEconcentration 86%	Sconcentration 98%	SSEconcentration 75%	SEconcentration 67%	SSEconcentration 99%	SSEconcentration 99%	Sconcentration 99%	Variableconcentration 30%	ENEconcentration 50%	Sconcentration 99%	Sconcentration 97%	Sconcentration 100%	Sconcentration 99%	Econcentration 73%	NEconcentration 70%	ENEconcentration 68%	Sconcentration 98%	SSWconcentration 96%	SSWconcentration 91%	SSEconcentration 98%	Sconcentration 100%	Sconcentration 94%	SSWconcentration 88%	ESEconcentration 33%	Nconcentration 62%	SSEconcentration 97%	Sconcentration 98%	Wconcentration 88%	NWconcentration 91%	Nconcentration 54%	Sconcentration 96%
Mean directional spread (°)	28.8	24.6	31.9	25.0	25.1	21.7	23.3	28.1	40.1	24.6	27.2	24.4	23.6	34.9	32.8	33.9	25.6	27.3	29.9	24.3	23.1	32.5	30.9	30.6	27.1	20.7	16.5	34.7	26.9	32.1	30.1
Mean wind direction	SEconcentration 57%	Sconcentration 96%	ESEconcentration 59%	SSEconcentration 77%	Sconcentration 94%	Sconcentration 94%	SSWconcentration 91%	WNWconcentration 92%	Variableconcentration 30%	Sconcentration 98%	SSWconcentration 90%	SSWconcentration 89%	SSWconcentration 59%	NNEconcentration 94%	NEconcentration 60%	Econcentration 62%	SSWconcentration 91%	SSWconcentration 89%	SWconcentration 86%	Sconcentration 86%	SSWconcentration 76%	SWconcentration 78%	SWconcentration 85%	Nconcentration 78%	Wconcentration 50%	SEconcentration 57%	WSWconcentration 72%	Wconcentration 93%	NWconcentration 96%	Wconcentration 63%	SSWconcentration 94%
Mean wind speed (mph)	9	15	11	21	13	19	15	13	11	16	17	11	10	6	7	9	19	20	15	17	13	9	11	9	14	17	10	16	16	13	13
Mean water temperature(°C)	14.1	13.5	13.1	12.2	12.2	11.4	11.5	11.6	11.8	11.9	12.5	12.6	12.9	13.1	13.2	12.5	11.4	11.9	12.3	12.1	12.1	12.4	12.6	12.9	13.3	12.6	12.1	12.2	12.4	12.5	12.3

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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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