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M2 wave buoy daily means for Oct 2010

Daily means from the M2 wave buoy for Oct 2010, 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

701 wave-buoy observations covered 30 of 31 days (97%). Typical wave height was 3.9 ft (10th–90th percentile 2–7.2 ft), while mean average of more than one wave period type was 4.9 seconds (10th–90th percentile 4–7.5 seconds). Typical wind was 19.6 mph (10th–90th percentile 11.5–27 mph) and mean water temperature was 13.4°C (10th–90th percentile 13.3–13.6°C). 1 of 3,049 checked values (0%) were excluded by quality control.

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

Typical Significant Wave Height

3.9ft
Mean: 4.5 ft
P10–P90: 2 — 7.2 ft
Recorded extremes

0.7 — 13.3 ft

Available for 698 of 701 hourly samples

Mean Observed Wave Period

4.9secs
P10–P90: 4 — 7.5secs
Recorded extremes

3 — 10.9secs

Available for 697 of 701 hourly samples

Typical Observed Wind

Variable, 19.6mph
Mean: 19.6 mph
P10–P90: 11.5 — 27 mph
Recorded extremes

2.3 — 38 mph

Circular concentration: 20%

Available for 700 of 701 hourly samples

Mean Water Temperature

13.4°C
P10–P90: 13.3 — 13.6°C
Recorded extremes

13.2 — 13.7°C

Available for 126 of 701 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 2010Last observation shown
Metric
Mean significant wave height (ft)663554457642123324544543-7661144
Mean maximum wave height (ft)-------------------------11991565
Mean peak period (s)-------------------------876996
Mean zero-crossing period (s)554555455544344434444444-655654
Mean peak wave direction-------------------------Sconcentration 99%SSWconcentration 94%SSWconcentration 98%Sconcentration 99%Sconcentration 99%Sconcentration 51%
Mean wave direction-------------------------Sconcentration 100%SSWconcentration 98%SSWconcentration 99%SSWconcentration 98%SSWconcentration 100%ESEconcentration 54%
Mean directional spread (°)-------------------------19.723.320.621.823.522.7
Mean wind directionSconcentration 81%Sconcentration 96%SSWconcentration 85%SSWconcentration 89%Sconcentration 98%SSWconcentration 96%SEconcentration 81%Econcentration 100%Econcentration 98%ENEconcentration 95%ENEconcentration 97%NEconcentration 98%Nconcentration 91%Nconcentration 91%NWconcentration 89%NNEconcentration 93%SWconcentration 78%WSWconcentration 98%WNWconcentration 88%WNWconcentration 87%WSWconcentration 97%SWconcentration 92%WNWconcentration 74%NNWconcentration 84%-SSWconcentration 100%SWconcentration 95%SWconcentration 94%SSWconcentration 84%SWconcentration 87%NEconcentration 59%
Mean wind speed (mph)232315232520192027232112111417141323262023251914-212122271312
Mean water temperature(°C)-------------------------13.513.513.513.413.313.4

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