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M2 wave buoy daily means for Nov 2022

Daily means from the M2 wave buoy for Nov 2022, 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

716 wave-buoy observations covered all 30 days. Typical wave height was 5.4 ft (10th–90th percentile 3.3–10 ft), while mean peak wave period was 6.8 seconds (10th–90th percentile 4.3–9.7 seconds). Typical wind was 22.6 mph (10th–90th percentile 11.4–33.1 mph) and mean water temperature was 14.3°C (10th–90th percentile 13.7–14.8°C). 4 of 4,296 checked values (0.1%) were excluded by quality control. Across 11 comparable years, mean wave height was above the same-month mean of 4.9 ft and mean wave period was above the same-month mean of 5.9 seconds.

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

Typical Significant Wave Height

5.4ft
Mean: 6 ft
P10–P90: 3.3 — 10 ft
Recorded extremes

1.5 — 17.4 ft

Mean Observed Wave Period

6.8secs
P10–P90: 4.3 — 9.7secs
Recorded extremes

3 — 16.6secs

Available for 712 of 716 hourly samples

Typical Observed Wind

SW, 22.6mph
Mean: 22.4 mph
P10–P90: 11.4 — 33.1 mph
Recorded extremes

1.7 — 47.2 mph

Circular concentration: 58%

Mean Water Temperature

14.3°C
P10–P90: 13.7 — 14.8°C
Recorded extremes

13.5 — 15°C

Compared With Previous Novembers

Historical baseline from 7,768 observations across 11 years.

Wave Height
6ft
1.1ft above mean
Historical mean 4.856ft
Wave Period
6.8s
0.9s above mean
Historical mean 5.9s
Water Temperature
14.3°C
1°C above mean
Historical mean 13.3°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 Nov 2022Last observation shown
Metric
Mean significant wave height (ft)510545699610QC rejected65574464564696107424
Mean maximum wave height (ft)614757913129141588710668671061014101711746
Mean peak period (s)6884668978866610955456768687885
Mean zero-crossing period (s)465445665665456544445556565544
Mean peak wave directionSSWconcentration 81%Sconcentration 93%Sconcentration 99%NWconcentration 78%Sconcentration 99%Sconcentration 99%Sconcentration 99%Sconcentration 99%SSWconcentration 93%Sconcentration 99%Sconcentration 99%Sconcentration 99%Sconcentration 95%Sconcentration 94%Sconcentration 100%Sconcentration 90%NNEconcentration 45%NWconcentration 96%WSWconcentration 61%SWconcentration 86%Sconcentration 81%SSEconcentration 53%Sconcentration 95%Sconcentration 98%Sconcentration 93%Sconcentration 100%Sconcentration 99%Sconcentration 76%Sconcentration 76%Sconcentration 98%
Mean wave directionSSWconcentration 94%SSWconcentration 96%Sconcentration 91%WNWconcentration 80%SSWconcentration 99%Sconcentration 100%Sconcentration 100%Sconcentration 100%SSWconcentration 98%Sconcentration 100%Sconcentration 100%Sconcentration 100%SSEconcentration 98%SSEconcentration 98%Sconcentration 99%SSEconcentration 97%Nconcentration 44%WNWconcentration 99%WSWconcentration 57%SWconcentration 93%Sconcentration 84%SSEconcentration 69%Sconcentration 98%Sconcentration 99%SSWconcentration 98%Sconcentration 100%Sconcentration 100%SSWconcentration 78%SSWconcentration 89%SSEconcentration 99%
Mean directional spread (°)45.829.528.652.741.234.928.428.046.724.426.040.346.147.422.226.255.256.645.951.4107.2152.8134.7119.9155.895.9119.2143.7119.9171.8
Mean wind directionWSWconcentration 92%SSWconcentration 91%SWconcentration 36%WNWconcentration 84%SWconcentration 84%SSWconcentration 96%SSWconcentration 96%SSWconcentration 96%SWconcentration 94%SSWconcentration 100%Sconcentration 98%SSEconcentration 96%SEconcentration 98%Sconcentration 70%SWconcentration 49%SEconcentration 70%NNWconcentration 85%WNWconcentration 99%SWconcentration 59%Wconcentration 92%Variableconcentration 25%NNWconcentration 50%SSWconcentration 84%SSWconcentration 91%WSWconcentration 93%Sconcentration 95%SSWconcentration 95%Wconcentration 72%SWconcentration 58%SSEconcentration 95%
Mean wind speed (mph)20331618212431262432322320211814192619232492629243225161019
Mean water temperature(°C)14.914.914.814.814.714.714.714.714.614.614.614.614.614.514.514.414.414.214.214.114.014.014.013.913.813.813.713.613.613.6

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