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K5 wave buoy daily means for Dec 2010

Daily means from the K5 wave buoy for Dec 2010, 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

740 wave-buoy observations covered all 31 days. Typical wave height was 9.5 ft (10th–90th percentile 5.9–16.7 ft), while mean reported wave period; measurement type unavailable was 7 seconds (10th–90th percentile 6–9 seconds). Typical wind was 16.1 mph (10th–90th percentile 6.9–27.8 mph) and mean water temperature was 10°C. 3 of 3,690 checked values (0.1%) were excluded by quality control.

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

Typical Wave Height

9.5ft
Mean: 10.7 ft
P10–P90: 5.9 — 16.7 ft
Recorded extremes

3.6 — 32.2 ft

Available for 739 of 740 hourly samples

Mean Wave Period

7secs
P10–P90: 6 — 9secs
Recorded extremes

5 — 11secs

Mean Water Temperature

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

10 — 10°C

Available for 735 of 740 hourly samples

Typical Wind

Variable, 16.1mph
Mean: 16.9 mph
P10–P90: 6.9 — 27.8 mph
Recorded extremes

0 — 35.8 mph

Circular concentration: 12%

Available for 738 of 740 hourly samples

Chart showing grouped wave observations for K5. 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 K5 wave buoy

K5 (WMO 64045) is a UK Met Office buoy in the far North Atlantic west of Scotland. It provides observations from a sparsely monitored ocean area upstream of the Hebrides and northern UK waters. The international feed includes marine weather and sea-temperature observations, with wave and wind parameters present only when the relevant sensors are reporting.

Metrics are rows; days run left to right.
K5 wave buoy daily means Dec 2010Last observation shown
Metric
Mean wave height (ft)48101291211891513878101926141191110778QC rejected1511966
Mean observed period(s)6Reported5Reported6Reported7Reported7Reported7Reported8Reported7Reported6Reported7Reported8Reported8Reported6Reported8Reported6Reported8Reported10Reported8Reported7Reported6Reported7Reported7Reported7Reported6Reported6Reported9Reported9Reported7Reported7Reported7Reported6Reported
Mean wave power(kW/m)-------------------------------
Mean wind directionSSEconcentration 78%SWconcentration 73%Nconcentration 88%Nconcentration 97%Nconcentration 69%NNEconcentration 93%Nconcentration 92%NWconcentration 82%Wconcentration 99%Wconcentration 98%NWconcentration 88%ESEconcentration 70%SSEconcentration 97%SWconcentration 83%Wconcentration 94%Nconcentration 97%NNWconcentration 96%ENEconcentration 88%ENEconcentration 93%ENEconcentration 94%NEconcentration 94%Econcentration 74%Variableconcentration 21%SWconcentration 53%Sconcentration 90%Sconcentration 98%SSEconcentration 90%ESEconcentration 99%NEconcentration 90%Econcentration 67%Wconcentration 59%
Mean wind speed (mph)92119211318131322271781310232926201814181310131830131713817
Mean water temperature(°C)10.010.010.010.010.010.010.010.010.010.010.010.010.010.010.010.010.010.010.010.010.010.010.010.010.010.010.010.010.010.010.0

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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.

Which wave period is shown?

The table shows the best period measurement supplied for each observation. It is not necessarily the energy period used to calculate wave power.

Tp
Peak period: the period at the strongest spectral peak.
Tavg
The provider's average wave period.
Tm02
A mean period calculated from the wave spectrum.
Tz
Mean zero-crossing period.
Reported
A legacy value whose period type was not recorded.
Mixed
A daily or monthly mean containing more than one period type.

Wave power needs a genuine energy period (Te). SurfHog does not substitute Tp, Tavg, Tm02 or Tz when Te is missing.

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 UK Met Office.

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