M2 wave buoy daily means for Sep 2019

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

Last observation shown Mon, Sep 30, 2019, 23:00

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

Monthly means for 2019

Period Summary

Hog Says

720 wave-buoy observations covered all 30 days. Typical wave height was 3.1 ft (10th–90th percentile 0.8–5 ft), while mean peak wave period was 5.2 seconds (10th–90th percentile 3.5–7.3 seconds). Typical wind was 14.1 mph (10th–90th percentile 5.2–21.9 mph) and mean water temperature was 14.8°C (10th–90th percentile 14.5–15.1°C). All 2,880 checked values passed quality control. Across 8 comparable years, mean wave height was below the same-month mean of 3.5 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

3.1ft

Mean: 3.1 ft

P10–P90: 0.8 — 5 ft

Recorded extremes

0.4 — 8.8 ft

Available for 240 of 720 hourly samples

Mean Observed Wave Period

5.2secs

P10–P90: 3.5 — 7.3secs

Recorded extremes

2 — 25secs

Available for 240 of 720 hourly samples

Typical Observed Wind

WSW, 14.1mph

Mean: 13.9 mph

P10–P90: 5.2 — 21.9 mph

Recorded extremes

0.7 — 32.1 mph

Circular concentration: 34%

Mean Water Temperature

14.8°C

P10–P90: 14.5 — 15.1°C

Recorded extremes

14 — 15.5°C

Compared With Previous Septembers

Historical baseline from 4,918 observations across 8 years.

Wave Height: 3.1ft; 0.4ft below mean; Historical mean 3.478ft
Wave Period: 5.2s; 0.1s above mean; Historical mean 5.1s
Water Temperature: 14.8°C; 0.4°C above mean; Historical mean 14.4°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 Sep 2019Last observation shown Sep 2019
Metric	Sep 1	Sep 2	Sep 3	Sep 4	Sep 5	Sep 6	Sep 7	Sep 8	Sep 9	Sep 10	Sep 11	Sep 12	Sep 13	Sep 14	Sep 15	Sep 16	Sep 17	Sep 18	Sep 19	Sep 20	Sep 21	Sep 22	Sep 23	Sep 24	Sep 25	Sep 26	Sep 27	Sep 28	Sep 29	Sep 30
Mean significant wave height (ft)	3	3	3	5	5	4	3	1	3	3	4	3	2	2	2	1	2	1	0	1	4	3	4	4	3	4	5	4	6	3
Mean maximum wave height (ft)	4	4	5	8	7	6	4	1	5	4	6	5	2	3	3	2	2	0	0	1	6	4	5	5	4	6	7	6	9	5
Mean peak period (s)	4	4	5	5	5	5	4	3	5	4	6	6	4	4	4	3	4	4	8	5	5	6	5	8	8	6	6	5	6	8
Mean zero-crossing period (s)	4	4	4	4	4	4	4	3	4	4	4	4	4	4	4	3	3	4	4	4	4	4	4	5	5	4	5	4	5	5
Mean peak wave direction	WNWconcentration 84%	SWconcentration 86%	Sconcentration 92%	Wconcentration 76%	NWconcentration 78%	WSWconcentration 74%	NNWconcentration 89%	Variableconcentration 29%	Variableconcentration 10%	NWconcentration 32%	Sconcentration 87%	Sconcentration 99%	Nconcentration 64%	Sconcentration 80%	SEconcentration 38%	ENEconcentration 68%	Nconcentration 85%	NNEconcentration 40%	ESEconcentration 46%	ESEconcentration 69%	ESEconcentration 92%	SEconcentration 70%	SSWconcentration 73%	Sconcentration 99%	Sconcentration 100%	Sconcentration 100%	SSWconcentration 54%	SSWconcentration 92%	ENEconcentration 73%	SEconcentration 85%
Mean wave direction	WNWconcentration 85%	SWconcentration 92%	Sconcentration 96%	Wconcentration 75%	NWconcentration 87%	WSWconcentration 90%	NNWconcentration 91%	Variableconcentration 5%	Variableconcentration 9%	NWconcentration 34%	SSWconcentration 98%	SSWconcentration 96%	Nconcentration 54%	Sconcentration 96%	Sconcentration 33%	ENEconcentration 89%	Nconcentration 87%	NEconcentration 47%	SEconcentration 66%	ESEconcentration 77%	ESEconcentration 98%	SEconcentration 89%	Sconcentration 91%	Sconcentration 99%	Sconcentration 100%	Sconcentration 100%	SSWconcentration 93%	SSWconcentration 97%	ENEconcentration 71%	SSEconcentration 61%
Mean directional spread (°)	27.9	29.2	24.6	20.6	27.1	27.8	29.7	36.4	21.4	24.1	26.4	22.7	41.7	28.7	43.9	39.7	33.0	41.5	42.7	32.5	39.2	34.3	26.4	21.6	17.8	17.4	32.3	30.9	27.4	24.4
Mean wind direction	Wconcentration 96%	SWconcentration 93%	SSWconcentration 96%	WNWconcentration 92%	WNWconcentration 91%	Wconcentration 87%	NNWconcentration 81%	SSWconcentration 80%	NNWconcentration 62%	Wconcentration 60%	WSWconcentration 91%	WSWconcentration 57%	WNWconcentration 48%	SSWconcentration 99%	NNEconcentration 34%	NNEconcentration 70%	Nconcentration 84%	WSWconcentration 52%	SSEconcentration 92%	ESEconcentration 87%	Econcentration 82%	SSEconcentration 77%	Sconcentration 77%	Sconcentration 83%	SWconcentration 73%	SWconcentration 96%	WSWconcentration 87%	SWconcentration 77%	Nconcentration 74%	Variableconcentration 17%
Mean wind speed (mph)	16	16	16	24	18	20	13	9	14	17	15	16	9	14	11	9	9	4	5	7	11	11	19	13	11	19	18	18	21	14
Mean water temperature(°C)	14.8	14.7	14.9	14.9	14.8	14.7	14.9	14.8	14.8	14.8	14.9	15.0	14.9	14.8	14.8	14.8	14.9	14.9	14.9	14.9	14.6	14.6	14.6	14.6	14.7	14.7	14.8	14.9	15.0	15.0

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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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