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Hornsea wave buoy daily means for Oct 2017

Daily means from the Hornsea wave buoy for Oct 2017, 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

1,490 wave-buoy observations covered all 31 days. Typical wave height was 2.4 ft (10th–90th percentile 1.2–4.3 ft), while mean average of more than one wave period type was 7.2 seconds (10th–90th percentile 2.8–12.2 seconds). Mean water temperature was 12.9°C (10th–90th percentile 12.5–13.3°C). 10 of 5,899 checked values (0.2%) were excluded by quality control. Across 7 comparable years, mean wave height was below the same-month mean of 3.2 ft and mean wave period was the same as the same-month mean of 7.2 seconds.

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

Typical Significant Wave Height

2.4ft
Mean: 2.6 ft
P10–P90: 1.2 — 4.3 ft
Recorded extremes

0.7 — 9.4 ft

Mean Observed Wave Period

7.2secs
P10–P90: 2.8 — 12.2secs
Recorded extremes

1.8 — 18.2secs

Available for 744 of 745 hourly samples

Observed Wave Direction

NE

Circular concentration: 36%

Mean Water Temperature

12.9°C
P10–P90: 12.5 — 13.3°C
Recorded extremes

12 — 13.9°C

Compared With Previous Octobers

Historical baseline from 10,280 observations across 7 years.

Wave Height
2.6ft
0.6ft below mean
Historical mean 3.182ft
Wave Period
7.2s
In line with the historical mean
Historical mean 7.2s
Water Temperature
12.9°C
0.1°C below mean
Historical mean 13°C

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 Oct 2017Last observation shown
Metric
Mean significant wave height (ft)32224QC rejected3321212222323343222123664
Mean maximum wave height (ft)44335844324233235344643321451096
Mean peak period (s)636971011111084636994108663795766101213
Mean zero-crossing period (s)3333464663333333364443443344577
Mean energy period (s)-------------------------------
Mean wave power, kilowatts per metre-------------------------------
Mean peak wave directionESEconcentration 80%WSWconcentration 72%NNWconcentration 72%Nconcentration 65%NNEconcentration 62%NNEconcentration 99%NNEconcentration 99%NNEconcentration 99%NNEconcentration 99%NNEconcentration 54%SSEconcentration 93%Variableconcentration 19%SSEconcentration 90%Sconcentration 54%Econcentration 75%ENEconcentration 54%SSWconcentration 77%NNEconcentration 93%NEconcentration 87%Econcentration 91%SEconcentration 90%WSWconcentration 76%NNEconcentration 98%NEconcentration 99%Variableconcentration 25%WNWconcentration 40%Nconcentration 89%NNWconcentration 67%Nconcentration 85%NNEconcentration 99%NNEconcentration 99%
Mean directional spread (°)15.619.719.424.320.415.525.523.722.425.619.825.320.325.828.725.423.819.618.026.519.621.521.219.627.635.517.617.615.013.414.8
Mean water temperature(°C)13.813.713.513.313.213.012.912.912.913.013.012.912.913.113.113.213.112.912.913.013.012.812.712.712.812.812.612.512.512.212.1

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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.

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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