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M2 wave buoy daily means for Feb 2024

Daily means from the M2 wave buoy for Feb 2024, including available wave height, period, direction, wind and sea temperature data.

Last observation shown

Data available:  to 

Monthly means for

Latest

Period Summary

Programmatically generated summary. Hog Says

619 wave-buoy observations covered 27 of 29 days (93%). Typical wave height was 3.8 ft (10th–90th percentile 2.3–6.2 ft), while mean peak wave period was 6.5 seconds (10th–90th percentile 3.9–10.5 seconds). Typical wind was 17.6 mph (10th–90th percentile 9.4–24.6 mph) and mean water temperature was 9.5°C (10th–90th percentile 9.3–9.7°C). 3 of 3,714 checked values (0.1%) were excluded by quality control. Across 14 comparable years, mean wave height was below the same-month mean of 4.9 ft and mean wave period was above the same-month mean of 5.9 seconds.

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

Typical Significant Wave Height

3.8ft
Mean: 4.3 ft
P10–P90: 2.3 — 6.2 ft
Recorded extremes

1.5 — 13.1 ft

Mean Observed Wave Period

6.5secs
P10–P90: 3.9 — 10.5secs
Recorded extremes

2.6 — 18.2secs

Available for 616 of 619 hourly samples

Typical Observed Wind

SW, 17.6mph
Mean: 17.4 mph
P10–P90: 9.4 — 24.6 mph
Recorded extremes

1.6 — 36.3 mph

Circular concentration: 54%

Mean Water Temperature

9.5°C
P10–P90: 9.3 — 9.7°C
Recorded extremes

9.2 — 9.9°C

Compared With Previous Februarys

Historical baseline from 7,344 observations across 14 years.

Wave Height
4.3ft
0.6ft below mean
Historical mean 4.921ft
Wave Period
6.5s
0.6s above mean
Historical mean 5.9s
Water Temperature
9.5°C
0.7°C above mean
Historical mean 8.8°C

Chart showing grouped wave observations for M2. Use the table on this page for a text version of the same measurements. To open hourly observations, use a linked day name in the table.

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.

Metrics are rows; days run left to right.
M2 wave buoy daily means Feb 2024Last observation shown
Metric
Mean significant wave height (ft)44345528843434434335655--4444
Mean maximum wave height (ft)77579841214757567464591087--7676
Mean peak period (s)555457869127567665-76867--5555
Mean zero-crossing period (s)44444545654444544545555--4444
Mean peak wave directionSWconcentration 69%Sconcentration 93%SSWconcentration 70%WSWconcentration 96%SWconcentration 89%Sconcentration 98%Sconcentration 95%ENEconcentration 97%Econcentration 62%Sconcentration 98%WSWconcentration 71%SWconcentration 86%Sconcentration 92%Sconcentration 98%Sconcentration 98%Sconcentration 95%Sconcentration 99%Sconcentration 99%SSWconcentration 78%Sconcentration 99%Sconcentration 98%SSWconcentration 72%SWconcentration 86%--NNEconcentration 97%Sconcentration 78%Sconcentration 93%SWconcentration 91%
Mean wave directionSWconcentration 81%SSWconcentration 96%SSWconcentration 91%SWconcentration 98%SSWconcentration 97%SSWconcentration 66%SEconcentration 71%ENEconcentration 98%Econcentration 83%SSEconcentration 98%SWconcentration 80%SWconcentration 92%Sconcentration 95%Sconcentration 98%Sconcentration 99%Sconcentration 97%Sconcentration 100%Sconcentration 98%SSWconcentration 94%Sconcentration 100%Sconcentration 98%SWconcentration 85%SWconcentration 99%--NNEconcentration 97%SSWconcentration 81%Sconcentration 97%SWconcentration 98%
Mean directional spread (°)161.5155.6161.8170.3185.3134.899.1116.2109.182.8151.6185.5165.4141.6127.4138.7161.5100.8144.6121.2114.9149.5171.6--207.7182.1169.3201.5
Mean wind directionWSWconcentration 82%SWconcentration 94%Wconcentration 91%WSWconcentration 98%SWconcentration 98%WNWconcentration 52%NNEconcentration 89%ENEconcentration 99%ENEconcentration 45%ESEconcentration 59%WNWconcentration 88%WSWconcentration 95%Sconcentration 66%SSWconcentration 98%SSWconcentration 89%SWconcentration 89%Sconcentration 96%WSWconcentration 89%WSWconcentration 89%SSWconcentration 95%SSWconcentration 80%Wconcentration 91%Wconcentration 98%--Nconcentration 62%WSWconcentration 87%SWconcentration 91%WSWconcentration 95%
Mean wind speed (mph)2018142220181028171316221318161118101619212119--14171819
Mean water temperature(°C)9.89.79.59.59.59.59.49.59.59.79.79.69.69.69.69.59.59.69.69.59.59.59.4--9.49.39.39.3

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Wave metric colour key

Colours move through the scale as each number increases. They do not by themselves mean that conditions are good, safe or suitable for you.

Wave & swell height0–40+ ft
Wave & swell period0–22+ s
Wind speed0–75 mph

The displayed numbers remain the source of truth; colour is an additional visual cue.

What does buoy wave power mean?

kW/m means kilowatts of wave power per metre of wave crest. It describes the rate at which the observed sea state carries energy past the buoy.

Unlike the shore-directed forecast value, buoy wave power is the total power at the observation point. It is not projected towards a particular beach and does not predict breaking wave height.

In deep water, wave power can be calculated with:

P is approximately 0.49 times significant wave height squared times wave energy period.

P is power in kW/m, Hs is significant wave height in metres, and Te is wave energy period in seconds.

  • Provider-reported power is used when available.
  • Otherwise, a value is calculated only when both significant height and a genuine energy period are available. The ≈ symbol marks calculated values.
  • A dash is shown instead of substituting peak, Tm02, zero-crossing or other period measurements.
  • Daily and monthly figures use the mean of hourly-normalized observation power values; they are not calculated from mean height and period.

Wave direction, spectrum, water depth and local bathymetry still matter. Wave power is best read alongside height, period and direction rather than as a standalone surf-quality score.

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