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M2 wave buoy daily means for Aug 2026

Daily means from the M2 wave buoy for Aug 2026, including available wave height, period, direction, wind and sea temperature data.

Last observation shown

Data available:  to 

Monthly means for

Latest

Typical Significant Wave Height

1.9ft
Mean: 2.1 ft
P10–P90: 0.8 — 3.8 ft
Recorded extremes

0.8 — 5.8 ft

Mean Observed Wave Period

4.1secs
P10–P90: 2.8 — 5.5secs
Recorded extremes

2.5 — 11.7secs

Available for 502 of 503 hourly samples

Typical Observed Wind

SW, 11.8mph
Mean: 12.2 mph
P10–P90: 5.9 — 19.3 mph
Recorded extremes

1 — 29 mph

Circular concentration: 31%

Mean Water Temperature

15.4°C
P10–P90: 14.7 — 16.1°C
Recorded extremes

14 — 17.4°C

Compared With Previous Augusts

Historical baseline from 9,579 observations across 15 years.

Wave Height
2.1ft
0.7ft below mean
Historical mean 2.756ft
Wave Period
4.1s
1.1s below mean
Historical mean 5.2s
Water Temperature
15.4°C
0.6°C above mean
Historical mean 14.8°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 Aug 2026Last observation shown
Metric
Mean significant wave height (ft)212343232211122123243----------
Mean maximum wave height (ft)323575343322123235366----------
Mean peak period (s)334454343444744434445----------
Mean zero-crossing period (s)334444333333443334344----------
Mean peak wave directionWconcentration 70%SEconcentration 43%ENEconcentration 78%SSEconcentration 76%WNWconcentration 88%WNWconcentration 46%SWconcentration 78%Sconcentration 95%SSWconcentration 68%NNEconcentration 58%ESEconcentration 45%Sconcentration 60%SSEconcentration 95%Variableconcentration 18%Nconcentration 69%SWconcentration 41%SSWconcentration 55%WNWconcentration 83%WSWconcentration 78%NNWconcentration 73%Nconcentration 99%----------
Mean wave directionWconcentration 72%ESEconcentration 52%ENEconcentration 84%SSEconcentration 80%WNWconcentration 94%WNWconcentration 64%SWconcentration 81%Sconcentration 97%Sconcentration 74%NNEconcentration 72%Econcentration 60%Sconcentration 69%SSEconcentration 89%Variableconcentration 9%Nconcentration 61%SWconcentration 59%SSWconcentration 68%Wconcentration 88%WSWconcentration 89%NNWconcentration 64%Nconcentration 99%----------
Mean directional spread (°)168.8247.1169.0205.5207.2190.7166.3158.8199.7181.5207.5214.7131.3184.3218.0225.0189.6185.9182.1179.8191.1----------
Mean wind directionSWconcentration 72%ESEconcentration 44%ESEconcentration 67%Sconcentration 66%Wconcentration 97%WSWconcentration 72%SSWconcentration 80%Sconcentration 98%SSWconcentration 65%Nconcentration 63%ESEconcentration 77%SSEconcentration 93%Sconcentration 95%Variableconcentration 7%Nconcentration 50%SSWconcentration 86%WSWconcentration 78%Wconcentration 94%SWconcentration 85%NNWconcentration 89%Nconcentration 96%----------
Mean wind speed (mph)14811172216131610710976991014151617----------
Mean water temperature(°C)14.915.014.915.114.914.815.315.515.615.415.815.916.015.515.115.115.515.615.815.715.7----------

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