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M2 wave buoy daily means for Jun 2016

Daily means from the M2 wave buoy for Jun 2016, 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

719 wave-buoy observations covered all 30 days. Typical wave height was 1.5 ft (10th–90th percentile 1–3.6 ft), while mean peak wave period was 5.5 seconds (10th–90th percentile 3.3–8.1 seconds). Typical wind was 10.3 mph (10th–90th percentile 3.4–17.4 mph). 3 of 3,595 checked values (0.1%) were excluded by quality control. Across 5 comparable years, mean wave height was below the same-month mean of 2.6 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

1.5ft
Mean: 2 ft
P10–P90: 1 — 3.6 ft
Recorded extremes

0.5 — 7.2 ft

Mean Observed Wave Period

5.5secs
P10–P90: 3.3 — 8.1secs
Recorded extremes

2.1 — 14.1secs

Available for 716 of 719 hourly samples

Typical Observed Wind

Variable, 10.3mph
Mean: 10.3 mph
P10–P90: 3.4 — 17.4 mph
Recorded extremes

0.5 — 25.4 mph

Circular concentration: 11%

Mean Water Temperature

-°C
P10–P90: - — -°C

Available for 0 of 719 hourly samples

Compared With Previous Junes

Historical baseline from 3,548 observations across 5 years.

Wave Height
2ft
0.6ft below mean
Historical mean 2.625ft
Wave Period
5.5s
0.4s above mean
Historical mean 5.1s
Water Temperature
–
Not enough comparable data
Historical mean 11.5°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 2016Last observation shown
Metric
Mean significant wave height (ft)QC rejectedQC rejected1111111112222342333322223233
Mean maximum wave height (ft)441000111112223453444433334254
Mean peak period (s)555776776785674554576455444456
Mean zero-crossing period (s)444444554544444443444443334344
Mean peak wave directionNNEconcentration 93%NEconcentration 98%Variableconcentration 23%Sconcentration 38%SSEconcentration 39%ESEconcentration 35%SSEconcentration 79%SSEconcentration 80%SSEconcentration 77%SSEconcentration 76%Sconcentration 94%Sconcentration 95%Sconcentration 79%Sconcentration 81%Nconcentration 58%Nconcentration 83%NNWconcentration 96%NWconcentration 65%Sconcentration 75%Sconcentration 93%Sconcentration 95%Sconcentration 98%Sconcentration 77%Sconcentration 90%NWconcentration 88%Variableconcentration 21%WNWconcentration 97%SSWconcentration 79%Sconcentration 88%Sconcentration 98%
Mean wave directionNNEconcentration 95%NEconcentration 98%ESEconcentration 39%ENEconcentration 36%ENEconcentration 67%ESEconcentration 61%SSEconcentration 91%SSEconcentration 89%SSEconcentration 88%Sconcentration 94%Sconcentration 98%Sconcentration 97%SSWconcentration 89%SEconcentration 89%NNEconcentration 83%Nconcentration 94%NNWconcentration 98%NWconcentration 74%Sconcentration 94%Sconcentration 98%Sconcentration 97%Sconcentration 100%Sconcentration 95%Sconcentration 99%WNWconcentration 85%Variableconcentration 18%WNWconcentration 96%SSWconcentration 90%Sconcentration 95%SSWconcentration 98%
Mean directional spread (°)22.324.035.430.831.237.033.025.730.826.824.425.426.130.531.924.828.433.327.926.628.026.133.232.330.931.029.536.022.023.9
Mean wind directionNNEconcentration 98%NEconcentration 98%NEconcentration 68%Nconcentration 91%NEconcentration 63%NEconcentration 44%SSEconcentration 43%Econcentration 35%ESEconcentration 51%Sconcentration 64%SSEconcentration 95%SSEconcentration 41%SSWconcentration 69%NEconcentration 88%Nconcentration 98%Nconcentration 97%NNWconcentration 96%WNWconcentration 65%Sconcentration 97%SWconcentration 90%SSWconcentration 91%SSWconcentration 98%Sconcentration 81%SWconcentration 86%NWconcentration 98%WSWconcentration 72%Wconcentration 76%SSWconcentration 71%SWconcentration 63%SWconcentration 85%
Mean wind speed (mph)1213464454561091191115151116101416912141313101416
Mean water temperature(°C)------------------------------

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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