Skip to content
Surfhog home
Menu

M2 wave buoy daily means for Oct 2019

Daily means from the M2 wave buoy for Oct 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

745 wave-buoy observations covered all 31 days. Typical wave height was 4.2 ft (10th–90th percentile 2.3–6.5 ft), while mean peak wave period was 6 seconds (10th–90th percentile 4.1–8.1 seconds). Typical wind was 18.2 mph (10th–90th percentile 8.8–24.8 mph) and mean water temperature was 14.6°C (10th–90th percentile 14.3–15°C). All 2,979 checked values passed quality control. Across 9 comparable years, mean wave height was above the same-month mean of 4.1 ft and mean wave period was above the same-month mean of 5.6 seconds.

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

Typical Significant Wave Height

4.2ft
Mean: 4.4 ft
P10–P90: 2.3 — 6.5 ft
Recorded extremes

0.8 — 11.5 ft

Available for 248 of 745 hourly samples

Mean Observed Wave Period

6secs
P10–P90: 4.1 — 8.1secs
Recorded extremes

2.6 — 16.5secs

Available for 248 of 745 hourly samples

Typical Observed Wind

Variable, 18.2mph
Mean: 17.5 mph
P10–P90: 8.8 — 24.8 mph
Recorded extremes

0.5 — 42.1 mph

Circular concentration: 25%

Mean Water Temperature

14.6°C
P10–P90: 14.3 — 15°C
Recorded extremes

14 — 15.2°C

Compared With Previous Octobers

Historical baseline from 5,947 observations across 9 years.

Wave Height
4.4ft
0.3ft above mean
Historical mean 4.101ft
Wave Period
6s
0.4s above mean
Historical mean 5.6s
Water Temperature
14.6°C
0.7°C above mean
Historical mean 13.9°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 2019Last observation shown
Metric
Mean significant wave height (ft)7356446656532335645532642443565
Mean maximum wave height (ft)1058866987874245785774310536647107
Mean peak period (s)75610656656675677786554655855566
Mean zero-crossing period (s)5455545545544445554443544544455
Mean peak wave directionNEconcentration 74%NNEconcentration 90%SSEconcentration 94%Sconcentration 98%SEconcentration 63%Wconcentration 52%Sconcentration 100%SSWconcentration 95%SWconcentration 96%SSWconcentration 88%Sconcentration 91%Sconcentration 99%SSWconcentration 46%SSEconcentration 98%SSEconcentration 86%Sconcentration 86%Sconcentration 99%Sconcentration 99%Nconcentration 65%NNEconcentration 99%NEconcentration 95%SSWconcentration 62%Sconcentration 100%SWconcentration 78%ENEconcentration 30%SSWconcentration 54%WNWconcentration 80%NNEconcentration 92%ENEconcentration 98%ENEconcentration 98%Econcentration 89%
Mean wave directionNEconcentration 70%NNEconcentration 92%SSEconcentration 94%Sconcentration 85%SEconcentration 87%WNWconcentration 61%Sconcentration 100%SSWconcentration 99%SWconcentration 99%SSWconcentration 93%SSWconcentration 99%Sconcentration 99%Variableconcentration 29%SSEconcentration 98%SSEconcentration 89%SSWconcentration 91%Sconcentration 100%Sconcentration 99%NNWconcentration 69%NNEconcentration 99%NEconcentration 98%SWconcentration 85%Sconcentration 100%SSWconcentration 89%ENEconcentration 45%SSWconcentration 42%WNWconcentration 93%NNEconcentration 96%ENEconcentration 99%Econcentration 99%ESEconcentration 93%
Mean directional spread (°)35.729.921.424.829.024.620.023.727.923.024.120.940.125.720.222.719.922.027.426.229.225.815.829.537.621.426.927.924.823.032.7
Mean wind directionNconcentration 59%NNWconcentration 78%SSEconcentration 82%Variableconcentration 19%SSEconcentration 87%Wconcentration 89%SSWconcentration 87%WSWconcentration 98%WSWconcentration 98%SWconcentration 87%WSWconcentration 98%SWconcentration 92%WSWconcentration 57%SEconcentration 77%SSEconcentration 86%SWconcentration 74%SSWconcentration 97%SWconcentration 44%NNWconcentration 91%NNEconcentration 96%Nconcentration 58%SWconcentration 95%SSWconcentration 99%Wconcentration 86%NNWconcentration 49%NWconcentration 91%NWconcentration 89%NNEconcentration 93%Econcentration 99%Econcentration 99%SEconcentration 91%
Mean wind speed (mph)19112117151822232323191511131519221220191115261611151817212215
Mean water temperature(°C)15.115.115.014.914.815.015.014.814.714.514.414.414.314.314.414.414.514.614.814.814.814.814.714.614.614.614.514.414.314.214.1

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