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Cleveleys wave buoy daily means for Apr 2020

Daily means from the Cleveleys wave buoy for Apr 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

1,440 wave-buoy observations covered all 30 days. Typical wave height was 1.3 ft (10th–90th percentile 0.5–2.8 ft), while mean average of more than one wave period type was 3.9 seconds (10th–90th percentile 2.3–5.3 seconds). Mean water temperature was 9.4°C (10th–90th percentile 7.7–10.4°C). 7 of 5,721 checked values (0.1%) were excluded by quality control.

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

Typical Significant Wave Height

1.3ft
Mean: 1.5 ft
P10–P90: 0.5 — 2.8 ft
Recorded extremes

0.3 — 5.5 ft

Mean Observed Wave Period

3.9secs
P10–P90: 2.3 — 5.3secs
Recorded extremes

1.7 — 20secs

Available for 718 of 720 hourly samples

Observed Wave Direction

Variable

Circular concentration: 14%

Most common: W (14%) · circular mean W

Mean Water Temperature

9.4°C
P10–P90: 7.7 — 10.4°C
Recorded extremes

7.3 — 11.5°C

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 Apr 2020Last observation shown
Metric
Mean significant wave height (ft)24323311111121112112211111112QC rejected
Mean maximum wave height (ft)374345211111311232233211212235
Mean peak period (s)455445674333334333333368343335
Mean zero-crossing period (s)343334443333333333233333333234
Mean energy period (s)------------------------------
Mean wave power, kilowatts per metre------------------------------
Mean peak wave directionNWconcentration 98%Wconcentration 98%Wconcentration 95%WSWconcentration 97%Sconcentration 98%WSWconcentration 89%Wconcentration 89%Wconcentration 93%Variableconcentration 30%Sconcentration 60%WSWconcentration 87%WNWconcentration 40%NEconcentration 90%SSWconcentration 70%WNWconcentration 93%Nconcentration 70%Econcentration 93%Econcentration 91%ESEconcentration 95%ENEconcentration 94%NEconcentration 97%NEconcentration 81%NWconcentration 50%WNWconcentration 63%SSEconcentration 67%WNWconcentration 85%NWconcentration 98%ENEconcentration 68%Sconcentration 89%SWconcentration 76%
Mean directional spread (°)24.821.222.924.218.624.832.141.235.738.536.537.121.927.230.924.027.529.828.522.923.126.937.439.030.631.232.227.022.119.7
Mean water temperature(°C)7.57.67.67.87.88.18.58.89.09.29.49.49.49.49.89.89.89.89.99.99.910.010.210.410.510.610.610.410.410.3

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.

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