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M2 wave buoy daily means for Jun 2024

Daily means from the M2 wave buoy for Jun 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

697 wave-buoy observations covered all 30 days. Typical wave height was 2.7 ft (10th–90th percentile 1.5–4.6 ft), while mean peak wave period was 4.7 seconds (10th–90th percentile 3.1–7.1 seconds). Typical wind was 13.9 mph (10th–90th percentile 6.1–20.6 mph) and mean water temperature was 12.7°C (10th–90th percentile 11.9–13.7°C). 1 of 4,182 checked values (0%) were excluded by quality control. Across 12 comparable years, mean wave height was above the same-month mean of 2.6 ft and mean wave period was below the same-month mean of 5.1 seconds.

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

Typical Significant Wave Height

2.7ft
Mean: 2.9 ft
P10–P90: 1.5 — 4.6 ft
Recorded extremes

0.4 — 10 ft

Mean Observed Wave Period

4.7secs
P10–P90: 3.1 — 7.1secs
Recorded extremes

2.5 — 10.5secs

Available for 696 of 697 hourly samples

Typical Observed Wind

W, 13.9mph
Mean: 13.6 mph
P10–P90: 6.1 — 20.6 mph
Recorded extremes

1.4 — 29.7 mph

Circular concentration: 47%

Mean Water Temperature

12.7°C
P10–P90: 11.9 — 13.7°C
Recorded extremes

11.3 — 14.5°C

Compared With Previous Junes

Historical baseline from 7,935 observations across 12 years.

Wave Height
2.9ft
0.3ft above mean
Historical mean 2.592ft
Wave Period
4.7s
0.4s below mean
Historical mean 5.1s
Water Temperature
12.7°C
0.6°C above mean
Historical mean 12.1°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 Jun 2024Last observation shown
Metric
Mean significant wave height (ft)32234323443265322331432322QC rejected422
Mean maximum wave height (ft)5335644567641084445427434347744
Mean peak period (s)543454444554697544445664455444
Mean zero-crossing period (s)433444344444554444434444344443
Mean peak wave directionNconcentration 99%NNEconcentration 83%WNWconcentration 77%WSWconcentration 60%WNWconcentration 95%Wconcentration 64%WSWconcentration 80%WNWconcentration 84%WNWconcentration 92%Nconcentration 98%Nconcentration 93%Nconcentration 50%Sconcentration 98%Sconcentration 99%Sconcentration 98%SWconcentration 59%NWconcentration 83%NNWconcentration 95%NNEconcentration 87%SWconcentration 60%Sconcentration 98%SSWconcentration 81%Sconcentration 72%SSWconcentration 85%Variableconcentration 3%NNEconcentration 47%SSWconcentration 95%WSWconcentration 83%SEconcentration 60%NNWconcentration 74%
Mean wave directionNconcentration 99%NNEconcentration 82%WNWconcentration 76%WSWconcentration 59%WNWconcentration 97%Wconcentration 71%SWconcentration 85%Wconcentration 85%WNWconcentration 94%Nconcentration 98%Nconcentration 95%Nconcentration 62%Sconcentration 98%Sconcentration 99%SSWconcentration 97%SWconcentration 80%NWconcentration 80%Nconcentration 97%NNEconcentration 90%SSWconcentration 61%Sconcentration 99%SSWconcentration 91%Sconcentration 74%SSWconcentration 93%Variableconcentration 17%NEconcentration 54%SSWconcentration 98%SWconcentration 90%SSEconcentration 77%NNWconcentration 62%
Mean directional spread (°)213.1225.5219.4185.9237.0227.2216.7218.8222.6202.2226.7202.8155.782.5102.8154.9216.2195.6228.2182.6193.9177.8161.9219.8211.9227.1223.7232.1231.5205.1
Mean wind directionNNWconcentration 97%NWconcentration 50%Wconcentration 76%Wconcentration 81%WNWconcentration 97%Wconcentration 69%WSWconcentration 81%WNWconcentration 86%WNWconcentration 93%NNWconcentration 98%NNWconcentration 93%WNWconcentration 39%Sconcentration 84%SWconcentration 88%WSWconcentration 69%Wconcentration 73%NWconcentration 98%NNWconcentration 97%Nconcentration 43%SWconcentration 66%SSWconcentration 94%SWconcentration 81%Variableconcentration 18%Sconcentration 97%Variableconcentration 7%Variableconcentration 5%WSWconcentration 92%WSWconcentration 87%Variableconcentration 24%WNWconcentration 75%
Mean wind speed (mph)11911171713131517181411211481211151192014916131120181112
Mean water temperature(°C)11.511.712.112.612.012.012.112.412.212.012.012.012.012.212.412.712.912.812.512.713.013.513.713.513.613.313.613.613.613.4

Swipe sideways to see more days.

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