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Cleveleys wave buoy daily means for Dec 2020

Daily means from the Cleveleys wave buoy for Dec 2020, 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 3.2 ft (10th–90th percentile 1–5.7 ft), while mean average of more than one wave period type was 5 seconds (10th–90th percentile 3.4–6.5 seconds). Mean water temperature was 8.3°C (10th–90th percentile 7.2–9.2°C). 2 of 5,902 checked values (0%) were excluded by quality control.

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

Typical Significant Wave Height

3.2ft
Mean: 3.3 ft
P10–P90: 1 — 5.7 ft
Recorded extremes

0.5 — 11.4 ft

Available for 741 of 743 hourly samples

Mean Observed Wave Period

5secs
P10–P90: 3.4 — 6.5secs
Recorded extremes

1.7 — 11.1secs

Available for 741 of 743 hourly samples

Observed Wave Direction

W

Circular concentration: 70%

Mean Water Temperature

8.3°C
P10–P90: 7.2 — 9.2°C
Recorded extremes

6.6 — 9.7°C

Available for 741 of 743 hourly samples

Chart showing grouped wave observations for Cleveleys. 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 Cleveleys wave buoy

Cleveleys is a National Network Datawell Directional WaveRider in about 10 metres of water off the Fylde coast. First deployed in June 2011, it records the eastern Irish Sea wave climate approaching Cleveleys and Blackpool and supports management of their heavily defended, low-lying frontage.

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.
Cleveleys wave buoy daily means Dec 2020Last observation shown
Metric
Mean significant wave height (ft)2444211543233534445522343QC rejectedQC rejected2222
Mean maximum wave height (ft)366731295535575766773345412113444
Mean peak period (s)4566443654455655555644454775555
Mean zero-crossing period (s)3444333443344444444433343554444
Mean energy period (s)-------------------------------
Mean wave power, kilowatts per metre-------------------------------
Mean peak wave directionWconcentration 89%Wconcentration 98%Wconcentration 85%NWconcentration 95%NNEconcentration 82%NWconcentration 96%Nconcentration 78%WNWconcentration 98%Wconcentration 79%Sconcentration 99%SWconcentration 85%Wconcentration 98%SSWconcentration 87%WSWconcentration 97%SWconcentration 93%SWconcentration 79%WSWconcentration 99%SWconcentration 87%WSWconcentration 96%Wconcentration 99%WSWconcentration 64%WNWconcentration 95%NNEconcentration 87%NWconcentration 99%WNWconcentration 90%Wconcentration 99%Wconcentration 99%Wconcentration 93%WNWconcentration 91%Wconcentration 97%Wconcentration 97%
Mean directional spread (°)34.720.824.818.725.931.619.917.824.217.626.926.222.022.126.219.424.624.423.819.229.028.523.112.522.113.915.627.223.029.427.5
Mean water temperature(°C)9.49.59.29.29.18.98.88.78.58.58.38.28.38.38.28.28.28.38.38.38.18.18.18.07.88.07.57.27.17.06.8

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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