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M2 wave buoy daily means for Jan 2014

Daily means from the M2 wave buoy for Jan 2014, 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

741 wave-buoy observations covered all 31 days. Typical wave height was 5.1 ft (10th–90th percentile 2.6–9.7 ft), while mean peak wave period was 6.5 seconds (10th–90th percentile 4.1–9.4 seconds). 8 of 2,223 checked values (0.4%) were excluded by quality control. Across 3 comparable years, mean wave height was above the same-month mean of 4.8 ft and mean wave period was above the same-month mean of 5 seconds.

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

Typical Significant Wave Height

5.1ft
Mean: 5.7 ft
P10–P90: 2.6 — 9.7 ft
Recorded extremes

1 — 14.9 ft

Available for 740 of 741 hourly samples

Mean Observed Wave Period

6.5secs
P10–P90: 4.1 — 9.4secs
Recorded extremes

2.7 — 17.1secs

Available for 734 of 741 hourly samples

Typical Observed Wind

-, -mph
Mean: - mph
P10–P90: - — - mph

Available for 0 of 741 hourly samples

Mean Water Temperature

-°C
P10–P90: - — -°C

Available for 0 of 741 hourly samples

Compared With Previous Januarys

Historical baseline from 2,181 observations across 3 years.

Wave Height
5.7ft
0.9ft above mean
Historical mean 4.757ft
Wave Period
6.5s
1.5s above mean
Historical mean 5s
Water Temperature
–
Not enough comparable data
Historical mean 9.4°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 Jan 2014Last observation shown
Metric
Mean significant wave height (ft)861167119545QC rejected85565433274546QC rejected75537
Mean maximum wave height (ft)12916811171475741177975433105758121077510
Mean peak period (s)7899799856579977864475555666657
Mean zero-crossing period (s)6565576545455555444454445555445
Mean peak wave directionSconcentration 92%SSWconcentration 80%Sconcentration 85%SSEconcentration 80%SSWconcentration 83%SSEconcentration 85%SSEconcentration 95%SSEconcentration 87%WNWconcentration 33%Sconcentration 91%WSWconcentration 59%Sconcentration 87%SSEconcentration 81%Sconcentration 75%Sconcentration 90%Sconcentration 89%Sconcentration 77%SSEconcentration 51%SWconcentration 68%WSWconcentration 71%Sconcentration 95%SWconcentration 64%WSWconcentration 80%Sconcentration 80%SWconcentration 69%SSWconcentration 86%SSWconcentration 87%Variableconcentration 20%NEconcentration 83%ENEconcentration 92%Sconcentration 75%
Mean wave directionSconcentration 95%SSWconcentration 93%Sconcentration 92%Sconcentration 90%SSWconcentration 87%Sconcentration 92%Sconcentration 97%Sconcentration 92%WNWconcentration 35%Sconcentration 94%WSWconcentration 78%Sconcentration 93%Sconcentration 94%SSWconcentration 77%Sconcentration 96%Sconcentration 92%SSWconcentration 81%SSEconcentration 60%SWconcentration 71%SWconcentration 81%Sconcentration 96%SSWconcentration 81%WSWconcentration 85%Sconcentration 85%SWconcentration 83%SSWconcentration 94%SSWconcentration 97%Variableconcentration 8%NEconcentration 85%Econcentration 95%Sconcentration 81%
Mean directional spread (°)40.543.846.850.038.447.546.250.232.036.039.136.956.150.540.542.450.148.640.534.638.039.631.841.438.739.232.037.937.336.839.2
Mean wind direction-------------------------------
Mean wind speed (mph)-------------------------------
Mean water temperature(°C)-------------------------------

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