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M2 wave buoy daily means for Aug 2022

Daily means from the M2 wave buoy for Aug 2022, 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

735 wave-buoy observations covered all 31 days. Typical wave height was 1.8 ft (10th–90th percentile 0.5–3.6 ft), while mean peak wave period was 4.4 seconds (10th–90th percentile 2.8–6.3 seconds). Typical wind was 10.4 mph (10th–90th percentile 4.5–17.7 mph) and mean water temperature was 15.3°C (10th–90th percentile 14.2–16.2°C). 8 of 4,410 checked values (0.2%) were excluded by quality control. Across 11 comparable years, mean wave height was below the same-month mean of 2.7 ft and mean wave period was below the same-month mean of 5.4 seconds.

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

Typical Significant Wave Height

1.8ft
Mean: 2 ft
P10–P90: 0.5 — 3.6 ft
Recorded extremes

0.3 — 6.2 ft

Mean Observed Wave Period

4.4secs
P10–P90: 2.8 — 6.3secs
Recorded extremes

2.2 — 12secs

Available for 727 of 735 hourly samples

Typical Observed Wind

Variable, 10.4mph
Mean: 10.7 mph
P10–P90: 4.5 — 17.7 mph
Recorded extremes

0.7 — 26.1 mph

Circular concentration: 10%

Mean Water Temperature

15.3°C
P10–P90: 14.2 — 16.2°C
Recorded extremes

13.7 — 17.7°C

Compared With Previous Augusts

Historical baseline from 6,658 observations across 11 years.

Wave Height
2ft
0.7ft below mean
Historical mean 2.69ft
Wave Period
4.4s
1s below mean
Historical mean 5.4s
Water Temperature
15.3°C
0.7°C above mean
Historical mean 14.6°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 2022Last observation shown
Metric
Mean significant wave height (ft)3533222111121114323422222211222
Mean maximum wave height (ft)4744322000021125434533332220233
Mean peak period (s)5654443466643345554554443343444
Mean zero-crossing period (s)4444333344433334444443343333333
Mean peak wave directionSSEconcentration 35%Sconcentration 99%Sconcentration 89%NWconcentration 72%NWconcentration 77%WNWconcentration 40%WSWconcentration 70%Variableconcentration 7%Variableconcentration 14%Variableconcentration 12%NEconcentration 39%Nconcentration 87%NNEconcentration 79%Nconcentration 81%Nconcentration 86%Nconcentration 96%NEconcentration 82%SSEconcentration 55%SWconcentration 88%Sconcentration 98%SSWconcentration 66%SSEconcentration 99%Sconcentration 89%Sconcentration 57%WSWconcentration 72%SWconcentration 47%ENEconcentration 55%NNEconcentration 36%ENEconcentration 70%ENEconcentration 72%NEconcentration 68%
Mean wave directionSSEconcentration 42%Sconcentration 100%Sconcentration 99%WNWconcentration 88%NWconcentration 78%WNWconcentration 58%WSWconcentration 85%Variableconcentration 21%Variableconcentration 10%Variableconcentration 21%Variableconcentration 24%Nconcentration 87%NNEconcentration 83%NNEconcentration 86%NNEconcentration 88%Nconcentration 97%NEconcentration 91%Sconcentration 53%SWconcentration 95%SSWconcentration 99%SSWconcentration 87%SSEconcentration 100%Sconcentration 99%SSWconcentration 75%SWconcentration 76%SWconcentration 52%ENEconcentration 73%NEconcentration 58%ENEconcentration 91%ENEconcentration 92%NEconcentration 88%
Mean directional spread (°)55.439.551.153.350.344.639.546.642.549.449.648.949.350.148.051.956.055.545.651.244.642.739.252.337.740.150.950.341.052.052.1
Mean wind directionSconcentration 92%SSWconcentration 100%SWconcentration 91%WNWconcentration 97%WNWconcentration 93%WSWconcentration 71%WSWconcentration 83%Variableconcentration 17%Sconcentration 70%SSEconcentration 76%NEconcentration 75%NNEconcentration 98%NNEconcentration 95%NNEconcentration 91%Nconcentration 73%NNWconcentration 98%NEconcentration 71%SSWconcentration 87%SWconcentration 94%SWconcentration 80%SWconcentration 44%Sconcentration 95%Sconcentration 97%SWconcentration 69%WSWconcentration 65%WNWconcentration 41%NEconcentration 92%NNEconcentration 94%ENEconcentration 96%NEconcentration 84%NEconcentration 97%
Mean wind speed (mph)1518121514121264351097613715151710131112121069131011
Mean water temperature(°C)15.314.815.515.615.414.915.115.415.516.416.315.614.814.214.114.214.414.315.115.715.615.515.915.915.916.016.116.115.414.714.5

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