Skip to content
Surfhog home
Menu

M2 wave buoy daily means for Oct 2016

Daily means from the M2 wave buoy for Oct 2016, 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

695 wave-buoy observations covered 30 of 31 days (97%). Typical wave height was 3.1 ft (10th–90th percentile 1–5.6 ft), while mean peak wave period was 5.2 seconds (10th–90th percentile 3.8–6.7 seconds). Typical wind was 15.7 mph (10th–90th percentile 6.6–22.9 mph). 1 of 3,474 checked values (0%) were excluded by quality control. Across 6 comparable years, mean wave height was below the same-month mean of 4.2 ft and mean wave period was below the same-month mean of 5.6 seconds.

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

Typical Significant Wave Height

3.1ft
Mean: 3.4 ft
P10–P90: 1 — 5.6 ft
Recorded extremes

0.5 — 9.7 ft

Mean Observed Wave Period

5.2secs
P10–P90: 3.8 — 6.7secs
Recorded extremes

2.1 — 9.6secs

Available for 694 of 695 hourly samples

Typical Observed Wind

ESE, 15.7mph
Mean: 15.2 mph
P10–P90: 6.6 — 22.9 mph
Recorded extremes

0.7 — 30.8 mph

Circular concentration: 41%

Available for 694 of 695 hourly samples

Mean Water Temperature

-°C
P10–P90: - — -°C

Available for 0 of 695 hourly samples

Compared With Previous Octobers

Historical baseline from 3,772 observations across 6 years.

Wave Height
3.4ft
0.8ft below mean
Historical mean 4.167ft
Wave Period
5.2s
0.4s below mean
Historical mean 5.6s
Water Temperature
–
Not enough comparable data
Historical mean 14°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 Oct 2016Last observation shown
Metric
Mean significant wave height (ft)2QC rejected4555421145434755421255334322-
Mean maximum wave height (ft)3367775211566461087520287345433-
Mean peak period (s)555566544556555765546465555644-
Mean zero-crossing period (s)444454443344444554444354444443-
Mean peak wave directionVariableconcentration 9%Econcentration 37%Sconcentration 99%SEconcentration 87%Econcentration 95%Econcentration 89%ENEconcentration 95%Econcentration 66%ENEconcentration 75%Econcentration 54%ENEconcentration 99%ENEconcentration 97%ENEconcentration 99%Econcentration 80%ESEconcentration 74%Sconcentration 99%SSWconcentration 91%Wconcentration 82%NNWconcentration 91%NNEconcentration 90%SEconcentration 55%Econcentration 86%ENEconcentration 99%ENEconcentration 99%ESEconcentration 60%Sconcentration 94%Sconcentration 99%Sconcentration 95%Sconcentration 94%SSWconcentration 99%-
Mean wave directionVariableconcentration 27%Econcentration 61%SSEconcentration 99%SEconcentration 93%Econcentration 97%Econcentration 94%Econcentration 98%Econcentration 86%ENEconcentration 98%Econcentration 83%ENEconcentration 99%ENEconcentration 99%ENEconcentration 100%Econcentration 95%ESEconcentration 85%SSEconcentration 98%SSWconcentration 98%Wconcentration 84%NNWconcentration 92%NNEconcentration 89%SEconcentration 84%ESEconcentration 89%ENEconcentration 99%ENEconcentration 100%ESEconcentration 79%SSWconcentration 98%Sconcentration 100%Sconcentration 94%Sconcentration 95%SSWconcentration 100%-
Mean directional spread (°)26.730.723.841.133.632.633.740.835.032.621.423.423.133.634.520.523.027.928.531.527.726.220.022.527.024.020.232.429.828.1-
Mean wind directionNEconcentration 73%ESEconcentration 42%SSEconcentration 98%ESEconcentration 95%Econcentration 96%Econcentration 96%ESEconcentration 98%Econcentration 91%ENEconcentration 86%NEconcentration 71%Econcentration 100%ENEconcentration 95%Econcentration 97%ESEconcentration 96%SEconcentration 75%SSEconcentration 89%SWconcentration 96%Wconcentration 96%NWconcentration 93%Nconcentration 93%SEconcentration 60%ESEconcentration 96%ENEconcentration 98%ENEconcentration 98%SEconcentration 76%SWconcentration 98%SWconcentration 98%WSWconcentration 67%SSWconcentration 85%SSWconcentration 98%-
Mean wind speed (mph)12102017151716861018181813182521241810613211912151891216-
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