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M2 wave buoy daily means for Mar 2026

Daily means from the M2 wave buoy for Mar 2026, 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

743 wave-buoy observations covered all 31 days. Typical wave height was 3.5 ft (10th–90th percentile 1.5–8.1 ft), while mean peak wave period was 5.9 seconds (10th–90th percentile 3.3–10 seconds). Typical wind was 18.2 mph (10th–90th percentile 7.9–31.6 mph) and mean water temperature was 9°C (10th–90th percentile 8.6–9.2°C). 6 of 4,458 checked values (0.1%) were excluded by quality control. Across 15 comparable years, mean wave height was above the same-month mean of 3.9 ft and mean wave period was above the same-month mean of 5.7 seconds.

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

Typical Significant Wave Height

3.5ft
Mean: 4.3 ft
P10–P90: 1.5 — 8.1 ft
Recorded extremes

0.4 — 15 ft

Mean Observed Wave Period

5.9secs
P10–P90: 3.3 — 10secs
Recorded extremes

2.5 — 15.4secs

Available for 737 of 743 hourly samples

Typical Observed Wind

SW, 18.2mph
Mean: 19.1 mph
P10–P90: 7.9 — 31.6 mph
Recorded extremes

1 — 40.5 mph

Circular concentration: 50%

Mean Water Temperature

9°C
P10–P90: 8.6 — 9.2°C
Recorded extremes

8.5 — 9.4°C

Compared With Previous Marchs

Historical baseline from 10,692 observations across 15 years.

Wave Height
4.3ft
0.4ft above mean
Historical mean 3.904ft
Wave Period
5.9s
0.2s above mean
Historical mean 5.7s
Water Temperature
9°C
0.5°C above mean
Historical mean 8.5°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 Mar 2026Last observation shown
Metric
Mean significant wave height (ft)76225422376107355832111367335542
Mean maximum wave height (ft)121144864341191712598134411251112558963
Mean peak period (s)710845646465864557958116566445554
Mean zero-crossing period (s)5644444445565444554454455444444
Mean peak wave directionSconcentration 99%Sconcentration 98%SSEconcentration 65%SEconcentration 86%Variableconcentration 25%NEconcentration 79%Sconcentration 96%Sconcentration 91%SSEconcentration 96%Sconcentration 98%WSWconcentration 83%SSWconcentration 97%WSWconcentration 84%WNWconcentration 93%WSWconcentration 78%SWconcentration 81%Sconcentration 99%SSEconcentration 90%NNEconcentration 71%SEconcentration 71%Sconcentration 90%SWconcentration 60%SEconcentration 34%SSWconcentration 83%NWconcentration 96%NWconcentration 46%WNWconcentration 56%NWconcentration 92%WSWconcentration 67%NWconcentration 92%Wconcentration 63%
Mean wave directionSconcentration 99%Sconcentration 97%SEconcentration 60%SEconcentration 89%Variableconcentration 24%NEconcentration 84%Sconcentration 96%Sconcentration 93%SSEconcentration 97%SSWconcentration 99%WSWconcentration 96%SSWconcentration 98%WSWconcentration 98%Wconcentration 94%WSWconcentration 85%SWconcentration 88%Sconcentration 99%SSEconcentration 86%NEconcentration 86%SEconcentration 88%Sconcentration 85%SWconcentration 55%Variableconcentration 25%SSWconcentration 87%NWconcentration 96%NWconcentration 48%Wconcentration 70%NWconcentration 96%WSWconcentration 79%NWconcentration 95%SWconcentration 60%
Mean directional spread (°)127.4108.1119.6189.7163.5167.4175.4153.2174.4137.0188.5112.9167.2157.2150.2183.2134.1131.4195.2186.3133.6138.5167.9134.1143.6186.0182.2189.1152.6222.0206.1
Mean wind directionSconcentration 99%SWconcentration 72%NEconcentration 74%SSEconcentration 99%Variableconcentration 5%NNWconcentration 47%Sconcentration 98%Sconcentration 95%Sconcentration 95%SSWconcentration 95%WSWconcentration 94%SWconcentration 88%WSWconcentration 96%WSWconcentration 88%SWconcentration 88%SSWconcentration 91%Sconcentration 99%Econcentration 45%NEconcentration 73%Sconcentration 91%SSWconcentration 73%WNWconcentration 57%SSEconcentration 56%SWconcentration 87%WNWconcentration 98%WSWconcentration 61%Wconcentration 82%Wconcentration 97%WSWconcentration 87%Wconcentration 93%WSWconcentration 83%
Mean wind speed (mph)301613162215171315282430281526253011115611162731171924241910
Mean water temperature(°C)9.19.39.39.39.29.29.29.29.29.19.18.98.78.58.68.68.78.98.98.98.98.98.98.98.98.98.98.98.98.98.9

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