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Chapel Point wave buoy daily means for Sep 2013

Daily means from the Chapel Point wave buoy for Sep 2013, 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

1,277 wave-buoy observations covered 28 of 30 days (93%). Typical wave height was 2.1 ft (10th–90th percentile 0.7–4.8 ft), while mean peak wave period was 5.6 seconds (10th–90th percentile 3–8.3 seconds). Mean water temperature was 16.1°C (10th–90th percentile 14.8–18.4°C). 10 of 5,108 checked values (0.2%) were excluded by quality control. Across 1 comparable year, mean wave height was above the same-month mean of 2.2 ft and mean wave period was above the same-month mean of 5.4 seconds.

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

Typical Significant Wave Height

2.1ft
Mean: 2.4 ft
P10–P90: 0.7 — 4.8 ft
Recorded extremes

0.3 — 10.8 ft

Mean Observed Wave Period

5.6secs
P10–P90: 3 — 8.3secs
Recorded extremes

1.7 — 25secs

Available for 638 of 639 hourly samples

Observed Wave Direction

NE

Circular concentration: 56%

Mean Water Temperature

16.1°C
P10–P90: 14.8 — 18.4°C
Recorded extremes

14.2 — 18.8°C

Compared With Previous Septembers

Historical baseline from 1,440 observations across 1 year.

Wave Height
2.4ft
0.2ft above mean
Historical mean 2.231ft
Wave Period
5.6s
0.2s above mean
Historical mean 5.4s
Water Temperature
16.1°C
0.2°C above mean
Historical mean 15.9°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 Sep 2013Last observation shown
Metric
Mean significant wave height (ft)3--212221652243222221111132355
Mean maximum wave height (ft)------------------------------
Mean peak period (s)5--445755787465346644775765577
Mean zero-crossing period (s)3--334433555344333333344444344
Mean energy period (s)------------------------------
Mean wave power, kilowatts per metre------------------------------
Mean peak wave directionNconcentration 99%--ESEconcentration 93%ENEconcentration 81%NEconcentration 71%ENEconcentration 58%ESEconcentration 42%NNEconcentration 52%NNEconcentration 97%NNEconcentration 99%NEconcentration 89%NNWconcentration 43%NNEconcentration 99%Variableconcentration 10%WSWconcentration 72%Sconcentration 47%Nconcentration 95%NEconcentration 33%NNEconcentration 89%SEconcentration 50%ENEconcentration 40%NNEconcentration 94%NEconcentration 90%NNEconcentration 99%NEconcentration 97%ENEconcentration 91%Econcentration 98%Econcentration 99%ENEconcentration 99%
Mean directional spread (°)21.8--28.035.435.830.232.136.220.321.322.229.121.221.434.731.430.130.332.939.944.840.331.827.422.025.622.121.121.6
Mean water temperature(°C)18.5--18.618.618.618.318.017.817.416.916.816.716.516.115.715.214.814.614.614.814.915.115.215.315.315.315.315.014.9

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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