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M2 wave buoy daily means for Oct 2008

Daily means from the M2 wave buoy for Oct 2008, 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

743 wave-buoy observations covered all 31 days. Typical wave height was 5.2 ft (10th–90th percentile 2.6–8.9 ft), while mean zero-crossing wave period was 4.7 seconds (10th–90th percentile 4–6 seconds). Typical wind was 24.2 mph (10th–90th percentile 11.5–34.5 mph). All 2,966 checked values passed quality control.

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

Typical Significant Wave Height

5.2ft
Mean: 5.4 ft
P10–P90: 2.6 — 8.9 ft
Recorded extremes

1.3 — 16.1 ft

Available for 742 of 743 hourly samples

Mean Observed Wave Period

4.7secs
P10–P90: 4 — 6secs
Recorded extremes

3 — 8secs

Typical Observed Wind

WSW, 24.2mph
Mean: 23.9 mph
P10–P90: 11.5 — 34.5 mph
Recorded extremes

3.5 — 48.3 mph

Circular concentration: 54%

Available for 738 of 743 hourly samples

Mean Water Temperature

-°C
P10–P90: - — -°C

Available for 0 of 743 hourly samples

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 Oct 2008Last observation shown
Metric
Mean significant wave height (ft)6676555469322334347854116QC rejected556476
Mean maximum wave height (ft)-------------------------------
Mean peak period (s)-------------------------------
Mean zero-crossing period (s)5555554556544444445654656544455
Mean peak wave direction-------------------------------
Mean wave direction-------------------------------
Mean directional spread (°)-------------------------------
Mean wind directionWconcentration 97%NWconcentration 94%NWconcentration 90%SWconcentration 79%NNEconcentration 84%Sconcentration 99%WSWconcentration 61%WSWconcentration 88%SSWconcentration 98%SSWconcentration 88%SWconcentration 82%SSWconcentration 87%WSWconcentration 77%Variableconcentration 13%WNWconcentration 86%WNWconcentration 98%Wconcentration 96%WSWconcentration 100%SSWconcentration 97%SWconcentration 93%Wconcentration 99%WSWconcentration 91%SSWconcentration 92%WSWconcentration 96%SSWconcentration 99%Wconcentration 99%WNWconcentration 92%NNWconcentration 92%Wconcentration 70%ENEconcentration 95%NNEconcentration 99%
Mean wind speed (mph)31302626202322152630111112121823172031322723372734262526212827
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