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Hornsea wave buoy daily means for Aug 2009

Daily means from the Hornsea wave buoy for Aug 2009, 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

1,487 wave-buoy observations covered all 31 days. Typical wave height was 1.4 ft (10th–90th percentile 0.9–2.3 ft), while mean average of more than one wave period type was 5 seconds (10th–90th percentile 2.6–8.7 seconds). 23 of 4,425 checked values (0.5%) were excluded by quality control.

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

Typical Significant Wave Height

1.4ft
Mean: 1.5 ft
P10–P90: 0.9 — 2.3 ft
Recorded extremes

0.4 — 3.7 ft

Mean Observed Wave Period

5secs
P10–P90: 2.6 — 8.7secs
Recorded extremes

1.7 — 11.8secs

Available for 738 of 744 hourly samples

Observed Wave Direction

E

Circular concentration: 42%

Mean Water Temperature

-°C
P10–P90: - — -°C

Available for 0 of 744 hourly samples

Chart showing grouped wave observations for Hornsea. 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 Hornsea wave buoy

Hornsea is a Channel Coastal Observatory wave station off the rapidly eroding Holderness coast of East Yorkshire. Its North Sea record provides local wave context for Hornsea's defended frontage and the adjacent soft-cliff coastline, where storms drive substantial shoreline change.

Its current data source reports wave height, wave period, wave direction, directional spread, wave power and sea temperature.

Metrics are rows; days run left to right.
Hornsea wave buoy daily means Aug 2009Last observation shown
Metric
Mean significant wave height (ft)2112111111111222222211221212222
Mean maximum wave height (ft)3223222212222332232321332423323
Mean peak period (s)54444445444656661096433454453777
Mean zero-crossing period (s)4333343333333333353333343333333
Mean energy period (s)-------------------------------
Mean wave power, kilowatts per metre-------------------------------
Mean peak wave directionESEconcentration 98%Variableconcentration 19%Econcentration 65%SEconcentration 99%ESEconcentration 99%Econcentration 92%NEconcentration 93%Econcentration 87%Econcentration 73%SEconcentration 85%Nconcentration 89%NNEconcentration 89%NNEconcentration 100%ENEconcentration 55%Variableconcentration 4%NWconcentration 51%NNEconcentration 99%NNEconcentration 99%ENEconcentration 55%SSEconcentration 61%SSWconcentration 59%Sconcentration 63%SEconcentration 95%Econcentration 98%ESEconcentration 87%SSEconcentration 98%SEconcentration 89%WSWconcentration 85%Nconcentration 80%ENEconcentration 49%ESEconcentration 57%
Mean directional spread (°)16.821.925.117.920.023.126.125.025.823.321.021.118.618.820.021.322.416.421.022.425.630.823.520.124.618.119.820.620.221.618.2
Mean water temperature(°C)-------------------------------

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 Regional Coastal Monitoring Programme.

Learn how SurfHog combines, checks and summarizes observations in the data and methodology notes.

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