Skip to content
Surfhog home
Menu

Hornsea wave buoy daily means for Aug 2019

Daily means from the Hornsea wave buoy for Aug 2019, 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

1,483 wave-buoy observations covered all 31 days. Typical wave height was 1.6 ft (10th–90th percentile 0.9–3 ft), while mean average of more than one wave period type was 5.4 seconds (10th–90th percentile 2.4–10 seconds). Mean water temperature was 15.6°C (10th–90th percentile 15.1–16.2°C). 16 of 5,828 checked values (0.3%) were excluded by quality control. Across 9 comparable years, mean wave height was below the same-month mean of 1.9 ft and mean wave period was below the same-month mean of 5.9 seconds.

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

Typical Significant Wave Height

1.6ft
Mean: 1.8 ft
P10–P90: 0.9 — 3 ft
Recorded extremes

0.5 — 4.9 ft

Available for 742 of 743 hourly samples

Mean Observed Wave Period

5.4secs
P10–P90: 2.4 — 10secs
Recorded extremes

1.7 — 16.7secs

Available for 739 of 743 hourly samples

Observed Wave Direction

Variable

Circular concentration: 29%

Most common: NNE (30%) · circular mean E

Mean Water Temperature

15.6°C
P10–P90: 15.1 — 16.2°C
Recorded extremes

14.8 — 17.2°C

Available for 742 of 743 hourly samples

Compared With Previous Augusts

Historical baseline from 13,242 observations across 9 years.

Wave Height
1.8ft
0.1ft below mean
Historical mean 1.87ft
Wave Period
5.4s
0.5s below mean
Historical mean 5.9s
Water Temperature
15.6°C
0.6°C above mean
Historical mean 15°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 Aug 2019Last observation shown
Metric
Mean significant wave height (ft)3322112144232222221112111111122
Mean maximum wave height (ft)5433222265344333322222221211233
Mean peak period (s)96676435654898574334-34353714534
Mean zero-crossing period (s)4544333344355433333333333333333
Mean energy period (s)-------------------------------
Mean wave power, kilowatts per metre-------------------------------
Mean peak wave directionNNEconcentration 100%NEconcentration 98%NEconcentration 99%NEconcentration 82%ENEconcentration 73%SSEconcentration 65%SWconcentration 69%NNWconcentration 51%Econcentration 91%SSEconcentration 69%SSWconcentration 46%NNEconcentration 88%NNEconcentration 100%NEconcentration 55%Nconcentration 38%Econcentration 49%Sconcentration 63%SSWconcentration 89%SWconcentration 71%Wconcentration 51%NNEconcentration 92%Sconcentration 86%SEconcentration 97%ESEconcentration 99%Econcentration 81%ESEconcentration 97%Econcentration 81%NNEconcentration 92%SSWconcentration 48%SSEconcentration 93%SEconcentration 61%
Mean directional spread (°)16.521.323.519.323.524.224.525.322.820.122.915.214.416.121.718.824.525.825.323.721.422.722.022.922.825.030.737.530.725.424.4
Mean water temperature(°C)15.916.016.116.116.015.915.715.715.815.815.515.415.315.215.115.115.015.115.115.115.115.215.315.515.916.016.016.015.815.715.6

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.

› Wave Buoy List