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M2 wave buoy daily means for Aug 2006

Daily means from the M2 wave buoy for Aug 2006, 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

744 wave-buoy observations covered all 31 days. Typical wave height was 3 ft (10th–90th percentile 1.3–4.3 ft), while mean zero-crossing wave period was 3.9 seconds (10th–90th percentile 3–5 seconds). Typical wind was 15 mph (10th–90th percentile 8.1–20.7 mph) and mean water temperature was 14.1°C (10th–90th percentile 13.3–14.8°C). 1 of 3,720 checked values (0%) were excluded by quality control.

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

Typical Significant Wave Height

3ft
Mean: 2.9 ft
P10–P90: 1.3 — 4.3 ft
Recorded extremes

0.7 — 6.9 ft

Available for 743 of 744 hourly samples

Mean Observed Wave Period

3.9secs
P10–P90: 3 — 5secs
Recorded extremes

3 — 5secs

Typical Observed Wind

WNW, 15mph
Mean: 14.7 mph
P10–P90: 8.1 — 20.7 mph
Recorded extremes

3.5 — 27.6 mph

Circular concentration: 48%

Mean Water Temperature

14.1°C
P10–P90: 13.3 — 14.8°C
Recorded extremes

12.8 — 15.8°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 Aug 2006Last observation shown
Metric
Mean significant wave height (ft)4552113244444322213332222334434
Mean maximum wave height (ft)-------------------------------
Mean peak period (s)-------------------------------
Mean zero-crossing period (s)4444344444444444433444444444444
Mean peak wave direction-------------------------------
Mean wave direction-------------------------------
Mean directional spread (°)-------------------------------
Mean wind directionWconcentration 98%NWconcentration 93%NNWconcentration 69%SWconcentration 70%SWconcentration 72%Sconcentration 48%Nconcentration 98%WSWconcentration 31%WNWconcentration 97%WNWconcentration 94%NWconcentration 95%NNWconcentration 98%Nconcentration 98%NWconcentration 94%SWconcentration 60%ENEconcentration 77%NNEconcentration 98%Nconcentration 65%Wconcentration 90%WSWconcentration 77%Wconcentration 83%SWconcentration 62%WSWconcentration 75%Wconcentration 47%Sconcentration 86%Wconcentration 98%WSWconcentration 90%Wconcentration 99%WNWconcentration 97%SWconcentration 71%SSWconcentration 95%
Mean wind speed (mph)192013910101612191917191612161013914161411111414141719181918
Mean water temperature(°C)13.613.514.114.414.514.314.114.114.314.614.313.513.513.513.513.413.313.513.713.814.014.114.914.614.814.414.514.314.114.114.4

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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