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Chapel Point wave buoy daily means for Jul 2018

Daily means from the Chapel Point wave buoy for Jul 2018, 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

1,398 wave-buoy observations covered all 31 days. Typical wave height was 1.5 ft (10th–90th percentile 0.7–3.1 ft), while mean peak wave period was 4.4 seconds (10th–90th percentile 2.6–6.7 seconds). Mean water temperature was 18.9°C (10th–90th percentile 17.7–20.2°C). All 5,585 checked values passed quality control. Across 6 comparable years, mean wave height was below the same-month mean of 1.8 ft and mean wave period was below the same-month mean of 4.9 seconds.

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

Typical Significant Wave Height

1.5ft
Mean: 1.7 ft
P10–P90: 0.7 — 3.1 ft
Recorded extremes

0.3 — 5.5 ft

Mean Observed Wave Period

4.4secs
P10–P90: 2.6 — 6.7secs
Recorded extremes

1.7 — 12.5secs

Observed Wave Direction

ENE

Circular concentration: 57%

Mean Water Temperature

18.9°C
P10–P90: 17.7 — 20.2°C
Recorded extremes

16.9 — 21°C

Available for 723 of 727 hourly samples

Compared With Previous Julys

Historical baseline from 8,322 observations across 6 years.

Wave Height
1.7ft
0.1ft below mean
Historical mean 1.837ft
Wave Period
4.4s
0.5s below mean
Historical mean 4.9s
Water Temperature
18.9°C
1.5°C above mean
Historical mean 17.4°C

Chart showing grouped wave observations for Chapel Point. 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 Chapel Point wave buoy

Chapel Point is a Channel Coastal Observatory wave station off the Lincolnshire coast near Chapel St Leonards. Its shallow North Sea setting records conditions approaching a low-lying, heavily managed sandy frontage north of Skegness, supporting flood and erosion monitoring.

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.
Chapel Point wave buoy daily means Jul 2018Last observation shown
Metric
Mean significant wave height (ft)322222212QC rejected322111112111111213421
Mean maximum wave height (ft)-------------------------------
Mean peak period (s)5546776657656533333333333444543
Mean zero-crossing period (s)4434444444444333333332333333433
Mean energy period (s)-------------------------------
Mean wave power, kilowatts per metre-------------------------------
Mean peak wave directionENEconcentration 98%ENEconcentration 98%ENEconcentration 97%NEconcentration 99%NNEconcentration 98%NNEconcentration 97%NEconcentration 98%NNEconcentration 89%NEconcentration 99%NNEconcentration 99%NEconcentration 99%NNEconcentration 98%NEconcentration 98%Econcentration 73%ESEconcentration 77%Econcentration 80%Nconcentration 78%ENEconcentration 55%ESEconcentration 96%Econcentration 76%ENEconcentration 72%Variableconcentration 10%ESEconcentration 73%SSEconcentration 57%NNEconcentration 90%Econcentration 78%Econcentration 76%Sconcentration 87%SSEconcentration 97%Sconcentration 86%SEconcentration 59%
Mean directional spread (°)30.428.835.326.425.722.826.030.925.924.226.932.227.331.337.640.839.436.527.532.139.430.032.630.638.330.434.224.925.630.836.4
Mean water temperature(°C)17.317.517.617.717.918.118.118.718.618.518.418.418.418.418.719.019.019.019.019.119.319.519.619.920.120.220.520.419.919.719.7

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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