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M2 wave buoy daily means for Feb 2019

Daily means from the M2 wave buoy for Feb 2019, 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

659 wave-buoy observations covered all 28 days. Mean peak wave period was 6.6 seconds (10th–90th percentile 4.5–8.9 seconds); wave-height data were unavailable. Typical wind was 21.4 mph (10th–90th percentile 9.8–29.3 mph). All 2,636 checked values passed quality control.

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

Typical Significant Wave Height

-ft
Mean: - ft
P10–P90: - — - ft

Available for 0 of 659 hourly samples

Mean Observed Wave Period

6.6secs
P10–P90: 4.5 — 8.9secs
Recorded extremes

2.6 — 18.6secs

Typical Observed Wind

SSW, 21.4mph
Mean: 20.4 mph
P10–P90: 9.8 — 29.3 mph
Recorded extremes

1.1 — 47.8 mph

Circular concentration: 65%

Mean Water Temperature

-°C
P10–P90: - — -°C

Available for 0 of 659 hourly samples

Compared With Previous Februarys

Historical baseline from 4,253 observations across 9 years.

Wave Height
–
Not enough comparable data
Historical mean 4.462ft
Wave Period
6.6s
1.2s above mean
Historical mean 5.4s
Water Temperature
–
Not enough comparable data
Historical mean 8.7°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 Feb 2019Last observation shown
Metric
Mean significant wave height (ft)----------------------------
Mean maximum wave height (ft)----------------------------
Mean peak period (s)665866587656666677576671011965
Mean zero-crossing period (s)----------------------------
Mean peak wave directionNEconcentration 87%Nconcentration 89%SSWconcentration 68%Sconcentration 98%Sconcentration 98%Sconcentration 99%SWconcentration 68%Sconcentration 99%SSWconcentration 85%WSWconcentration 61%WNWconcentration 49%Sconcentration 97%Sconcentration 99%Sconcentration 99%Sconcentration 99%Sconcentration 97%Sconcentration 98%Sconcentration 98%SSWconcentration 88%Sconcentration 99%Sconcentration 98%Sconcentration 98%Sconcentration 97%Sconcentration 96%Sconcentration 98%SSEconcentration 92%SSEconcentration 64%SSWconcentration 49%
Mean wave direction----------------------------
Mean directional spread (°)26.826.722.621.622.423.530.617.531.820.329.424.120.416.418.520.619.024.226.419.321.624.526.837.029.923.128.621.6
Mean wind directionNNEconcentration 81%NNWconcentration 87%SSWconcentration 96%WSWconcentration 82%Sconcentration 85%SSWconcentration 90%WSWconcentration 69%SWconcentration 93%WSWconcentration 98%WNWconcentration 88%Wconcentration 63%SSWconcentration 99%Sconcentration 98%Sconcentration 98%Sconcentration 100%Sconcentration 96%Sconcentration 98%SWconcentration 95%SSWconcentration 90%SSWconcentration 99%Sconcentration 96%SSEconcentration 98%Sconcentration 95%SSEconcentration 90%SSEconcentration 95%SSEconcentration 92%SSWconcentration 88%Wconcentration 46%
Mean wind speed (mph)2118201721212531262015212421242427222328262221101181110
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