Skip to content
Surfhog home
Menu

Hornsea wave buoy daily means for Dec 2012

Daily means from the Hornsea wave buoy for Dec 2012, 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 3.3 ft (10th–90th percentile 1.5–6.8 ft), while mean average of more than one wave period type was 7.5 seconds (10th–90th percentile 3.4–10.6 seconds). Mean water temperature was 7.4°C (10th–90th percentile 7–8°C). 4 of 5,818 checked values (0.1%) were excluded by quality control. Across 2 comparable years, mean wave height was above the same-month mean of 3.6 ft and mean wave period was below the same-month mean of 8.9 seconds.

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

Typical Significant Wave Height

3.3ft
Mean: 3.7 ft
P10–P90: 1.5 — 6.8 ft
Recorded extremes

0.8 — 11.2 ft

Available for 743 of 744 hourly samples

Mean Observed Wave Period

7.5secs
P10–P90: 3.4 — 10.6secs
Recorded extremes

1.7 — 14.3secs

Available for 743 of 744 hourly samples

Observed Wave Direction

NE

Circular concentration: 64%

Mean Water Temperature

7.4°C
P10–P90: 7 — 8°C
Recorded extremes

6.8 — 8.4°C

Available for 742 of 744 hourly samples

Compared With Previous Decembers

Historical baseline from 2,949 observations across 2 years.

Wave Height
3.7ft
0.1ft above mean
Historical mean 3.576ft
Wave Period
7.5s
1.4s below mean
Historical mean 8.9s
Water Temperature
7.4°C
0.1°C above mean
Historical mean 7.3°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 Dec 2012Last observation shown
Metric
Mean significant wave height (ft)34345543474326321251086422244323
Mean maximum wave height (ft)5646877461074395223715129632256545
Mean peak period (s)788988676109977118456898910631013635
Mean zero-crossing period (s)4545554446654544344665443355434
Mean energy period (s)-------------------------------
Mean wave power, kilowatts per metre-------------------------------
Mean peak wave directionNNEconcentration 98%NNEconcentration 98%NEconcentration 77%NEconcentration 97%NEconcentration 98%ENEconcentration 66%NEconcentration 65%NEconcentration 75%NNWconcentration 75%NNEconcentration 98%NEconcentration 99%NNEconcentration 100%NEconcentration 81%ESEconcentration 96%NEconcentration 99%NEconcentration 76%ESEconcentration 90%NNEconcentration 84%ENEconcentration 95%Econcentration 100%ENEconcentration 99%ENEconcentration 100%NEconcentration 75%NEconcentration 100%ENEconcentration 68%Sconcentration 80%NNEconcentration 65%NEconcentration 99%SEconcentration 88%Sconcentration 85%SSEconcentration 92%
Mean directional spread (°)18.917.020.416.016.116.718.020.916.816.119.716.820.219.923.725.125.822.519.815.915.016.021.122.225.623.117.918.518.823.418.3
Mean water temperature(°C)8.38.18.17.97.87.67.47.37.47.47.37.27.17.07.07.17.17.27.27.27.37.27.47.47.37.37.27.17.37.27.3

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