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Hornsea wave buoy daily means for Jul 2013

Daily means from the Hornsea wave buoy for Jul 2013, 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

1,471 wave-buoy observations covered all 31 days. Typical wave height was 1.1 ft (10th–90th percentile 0.5–2.1 ft), while mean average of more than one wave period type was 5.6 seconds (10th–90th percentile 2.5–9.1 seconds). Mean water temperature was 13.5°C (10th–90th percentile 12.2–14.7°C). 13 of 5,770 checked values (0.2%) were excluded by quality control. Across 3 comparable years, mean wave height was below the same-month mean of 2.2 ft and mean wave period was below the same-month mean of 6.4 seconds.

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

Typical Significant Wave Height

1.1ft
Mean: 1.3 ft
P10–P90: 0.5 — 2.1 ft
Recorded extremes

0.4 — 3.5 ft

Mean Observed Wave Period

5.6secs
P10–P90: 2.5 — 9.1secs
Recorded extremes

1.7 — 15.4secs

Available for 743 of 744 hourly samples

Observed Wave Direction

ENE

Circular concentration: 62%

Mean Water Temperature

13.5°C
P10–P90: 12.2 — 14.7°C
Recorded extremes

11.6 — 17.1°C

Available for 696 of 744 hourly samples

Compared With Previous Julys

Historical baseline from 4,435 observations across 3 years.

Wave Height
1.3ft
0.9ft below mean
Historical mean 2.165ft
Wave Period
5.6s
0.8s below mean
Historical mean 6.4s
Water Temperature
13.5°C
0.6°C below mean
Historical mean 14.1°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 Jul 2013Last observation shown
Metric
Mean significant wave height (ft)1111111112321111111222211112211
Mean maximum wave height (ft)1222121223532211111333222113221
Mean peak period (s)37433391055876569987567765434544
Mean zero-crossing period (s)3333333344554434444444444333333
Mean energy period (s)-------------------------------
Mean wave power, kilowatts per metre-------------------------------
Mean peak wave directionWNWconcentration 74%Econcentration 54%ESEconcentration 96%Sconcentration 39%SEconcentration 61%SEconcentration 99%ENEconcentration 77%NNEconcentration 99%NEconcentration 99%NEconcentration 98%NNEconcentration 100%NNEconcentration 100%NNEconcentration 100%NEconcentration 66%ENEconcentration 68%NNEconcentration 88%NNEconcentration 99%NNEconcentration 100%NEconcentration 94%NEconcentration 99%NEconcentration 99%NNEconcentration 100%NNEconcentration 100%NEconcentration 96%ENEconcentration 86%ENEconcentration 83%Econcentration 95%ESEconcentration 51%ESEconcentration 98%SEconcentration 87%SEconcentration 73%
Mean directional spread (°)22.523.119.826.629.922.827.626.625.923.015.517.321.722.426.723.219.726.126.622.719.215.917.325.726.830.637.430.225.122.725.3
Mean water temperature(°C)12.012.012.212.312.812.612.812.812.912.812.913.013.213.213.413.914.914.814.614.314.114.114.014.014.114.214.214.214.514.714.7

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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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