M2 wave buoy daily means for Jul 2017

Daily means from the M2 wave buoy for Jul 2017, including available wave height, period, direction, wind and sea temperature data.

Last observation shown Mon, Jul 31, 2017, 23:00

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

Monthly means for 2017

Period Summary

Hog Says

744 wave-buoy observations covered all 31 days. Typical wave height was 1.9 ft (10th–90th percentile 0.9–4 ft), while mean peak wave period was 4.8 seconds (10th–90th percentile 3.1–6.7 seconds). Typical wind was 10.3 mph (10th–90th percentile 3.4–16.7 mph) and mean water temperature was 13.8°C (10th–90th percentile 12.5–14.8°C). 7 of 4,464 checked values (0.2%) were excluded by quality control. Across 6 comparable years, mean wave height was below the same-month mean of 2.6 ft and mean wave period was the same as the same-month mean of 4.8 seconds.

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

Typical Significant Wave Height

1.9ft

Mean: 2.2 ft

P10–P90: 0.9 — 4 ft

Recorded extremes

0.4 — 6.7 ft

Mean Observed Wave Period

4.8secs

P10–P90: 3.1 — 6.7secs

Recorded extremes

2.1 — 10secs

Available for 737 of 744 hourly samples

Typical Observed Wind

SW, 10.3mph

Mean: 10.3 mph

P10–P90: 3.4 — 16.7 mph

Recorded extremes

0 — 27.2 mph

Circular concentration: 34%

Mean Water Temperature

13.8°C

P10–P90: 12.5 — 14.8°C

Recorded extremes

11.9 — 16.1°C

Compared With Previous Julys

Historical baseline from 4,242 observations across 6 years.

Wave Height: 2.2ft; 0.4ft below mean; Historical mean 2.559ft
Wave Period: 4.8s; In line with the historical mean; Historical mean 4.8s
Water Temperature: 13.8°C; 0.3°C above mean; Historical mean 13.5°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 Jul 2017Last observation shown Jul 2017
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)	3	2	2	2	1	1	1	1	1	2	2	2	2	3	3	2	1	1	3	3	5	2	1	2	2	4	4	4	4	3	4
Mean maximum wave height (ft)	4	3	3	3	1	0	0	1	1	2	2	2	2	3	4	3	1	1	4	4	7	3	1	2	2	5	5	6	5	5	5
Mean peak period (s)	4	4	5	4	4	6	5	4	4	4	4	4	4	4	5	6	4	4	5	4	6	7	7	4	5	5	5	6	5	5	5
Mean zero-crossing period (s)	4	4	4	3	3	4	3	3	3	3	3	4	4	4	4	4	3	3	4	4	5	5	4	3	4	4	4	4	4	4	4
Mean peak wave direction	Wconcentration 31%	WSWconcentration 54%	Sconcentration 92%	Sconcentration 97%	NNEconcentration 50%	Sconcentration 36%	SSWconcentration 57%	Variableconcentration 24%	SSWconcentration 75%	WSWconcentration 32%	Econcentration 71%	NNEconcentration 73%	Sconcentration 85%	Wconcentration 56%	Sconcentration 99%	SSEconcentration 97%	WSWconcentration 42%	ENEconcentration 86%	ENEconcentration 81%	WSWconcentration 52%	SSEconcentration 99%	SSEconcentration 97%	SSEconcentration 97%	NNWconcentration 85%	NEconcentration 60%	SSWconcentration 74%	Sconcentration 87%	Sconcentration 98%	Sconcentration 89%	Sconcentration 94%	Sconcentration 98%
Mean wave direction	Wconcentration 37%	WSWconcentration 60%	SSWconcentration 90%	Sconcentration 99%	NEconcentration 59%	SEconcentration 64%	SSWconcentration 83%	Variableconcentration 28%	SSWconcentration 91%	Variableconcentration 23%	Econcentration 76%	NNEconcentration 74%	Sconcentration 95%	WSWconcentration 59%	Sconcentration 99%	Sconcentration 98%	SWconcentration 44%	Econcentration 86%	ENEconcentration 75%	WSWconcentration 56%	SSEconcentration 98%	SSEconcentration 99%	SSEconcentration 96%	NNWconcentration 84%	NEconcentration 77%	SSWconcentration 82%	Sconcentration 96%	Sconcentration 98%	Sconcentration 98%	Sconcentration 98%	Sconcentration 99%
Mean directional spread (°)	30.1	33.5	31.1	26.5	44.5	39.3	36.3	43.0	35.2	32.1	34.7	33.0	28.9	31.5	23.1	29.3	32.2	30.6	26.1	23.7	22.3	22.7	27.7	35.2	40.4	28.7	29.2	24.6	24.2	22.3	20.6
Mean wind direction	Wconcentration 64%	SWconcentration 79%	SWconcentration 54%	SSWconcentration 76%	NNEconcentration 81%	Variableconcentration 5%	SWconcentration 60%	SSEconcentration 41%	SWconcentration 76%	Wconcentration 49%	ENEconcentration 66%	ENEconcentration 58%	SSWconcentration 83%	WSWconcentration 59%	SSWconcentration 93%	Wconcentration 54%	SWconcentration 42%	Econcentration 98%	SEconcentration 45%	WSWconcentration 62%	SSEconcentration 92%	ESEconcentration 61%	NWconcentration 75%	NWconcentration 94%	Econcentration 41%	SWconcentration 81%	SWconcentration 94%	SWconcentration 92%	SWconcentration 95%	SWconcentration 93%	SSWconcentration 98%
Mean wind speed (mph)	12	11	7	11	4	4	6	7	8	8	10	7	13	13	12	8	7	9	12	14	18	5	5	10	6	16	14	17	15	14	15
Mean water temperature(°C)	12.2	12.2	12.6	12.8	13.6	14.4	14.7	15.0	14.5	14.4	14.0	14.5	14.3	13.4	13.8	14.5	14.3	14.2	14.2	13.5	13.3	13.3	13.4	13.4	13.9	13.6	13.6	13.6	13.8	14.0	14.1

Swipe sideways to see more days.

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.

› Wave Buoy List