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M2 wave buoy daily means for Jan 2026

Daily means from the M2 wave buoy for Jan 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

744 wave-buoy observations covered all 31 days. Typical wave height was 5.8 ft (10th–90th percentile 3.5–9.2 ft), while mean peak wave period was 6.6 seconds (10th–90th percentile 4.6–10 seconds). Typical wind was 23.7 mph (10th–90th percentile 14.7–32.9 mph) and mean water temperature was 10.5°C (10th–90th percentile 10–11.2°C). 15 of 4,464 checked values (0.3%) were excluded by quality control. Across 14 comparable years, mean wave height was above the same-month mean of 5.2 ft and mean wave period was above the same-month mean of 5.8 seconds.

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

Typical Significant Wave Height

5.8ft
Mean: 6.1 ft
P10–P90: 3.5 — 9.2 ft
Recorded extremes

1.9 — 16.1 ft

Mean Observed Wave Period

6.6secs
P10–P90: 4.6 — 10secs
Recorded extremes

2.8 — 20secs

Available for 729 of 744 hourly samples

Typical Observed Wind

Variable, 23.7mph
Mean: 24 mph
P10–P90: 14.7 — 32.9 mph
Recorded extremes

2 — 46.8 mph

Circular concentration: 25%

Mean Water Temperature

10.5°C
P10–P90: 10 — 11.2°C
Recorded extremes

9.8 — 11.5°C

Compared With Previous Januarys

Historical baseline from 9,539 observations across 14 years.

Wave Height
6.1ft
0.9ft above mean
Historical mean 5.184ft
Wave Period
6.6s
0.8s above mean
Historical mean 5.8s
Water Temperature
10.5°C
0.4°C above mean
Historical mean 10.1°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 Jan 2026Last observation shown
Metric
Mean significant wave height (ft)677565535311756465447757977127895
Mean maximum wave height (ft)1011118978575181179697671111811161112211113149
Mean peak period (s)566565655688771066556776766911779
Mean zero-crossing period (s)4554545444654455444555565565565
Mean peak wave directionNNWconcentration 93%Nconcentration 94%Nconcentration 97%NNWconcentration 91%Nconcentration 97%Wconcentration 66%NNEconcentration 83%Variableconcentration 22%Nconcentration 63%SSWconcentration 55%Sconcentration 96%SSWconcentration 99%WSWconcentration 46%SSWconcentration 82%Sconcentration 96%SSEconcentration 99%SSEconcentration 95%SSEconcentration 95%SSEconcentration 99%SEconcentration 97%ESEconcentration 77%Econcentration 70%NEconcentration 95%NEconcentration 96%Econcentration 80%Econcentration 81%Econcentration 67%SSEconcentration 97%SEconcentration 83%Econcentration 87%ENEconcentration 41%
Mean wave directionNNWconcentration 93%Nconcentration 96%Nconcentration 99%NNWconcentration 94%Nconcentration 99%Wconcentration 78%Nconcentration 88%Variableconcentration 5%NNWconcentration 89%SWconcentration 72%Sconcentration 96%SSWconcentration 100%Wconcentration 71%SWconcentration 85%SSWconcentration 97%SSEconcentration 99%SEconcentration 98%SSEconcentration 96%SSEconcentration 98%SEconcentration 94%ESEconcentration 87%ESEconcentration 89%ENEconcentration 98%ENEconcentration 99%Econcentration 87%Econcentration 93%Econcentration 71%SSEconcentration 95%ESEconcentration 95%Econcentration 96%ENEconcentration 38%
Mean directional spread (°)157.1139.6128.8190.6159.2191.6178.2180.6185.4140.4147.0148.0155.4148.0156.2167.6192.8194.9165.3166.7186.2193.7139.2115.3207.5176.1174.5166.5168.5179.1154.1
Mean wind directionWNWconcentration 95%NWconcentration 97%NNWconcentration 98%WNWconcentration 98%NNWconcentration 96%Wconcentration 86%WNWconcentration 69%NNWconcentration 53%NWconcentration 96%WSWconcentration 61%Sconcentration 98%SSWconcentration 100%Wconcentration 76%SSWconcentration 90%SSWconcentration 94%SSEconcentration 98%SSEconcentration 94%SSEconcentration 96%SSEconcentration 95%SSEconcentration 93%SEconcentration 85%SEconcentration 98%ESEconcentration 88%Econcentration 100%ESEconcentration 86%SEconcentration 98%SEconcentration 80%SSEconcentration 88%ESEconcentration 98%ESEconcentration 92%NWconcentration 38%
Mean wind speed (mph)28292722242619172116372521251424181822282417263324283721282816
Mean water temperature(°C)11.511.311.211.111.011.010.810.710.510.410.310.710.510.610.610.610.510.410.210.110.010.010.010.19.99.910.010.110.310.310.3

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