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Chapel Point wave buoy daily means for Aug 2025

Daily means from the Chapel Point wave buoy for Aug 2025, 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

1,459 wave-buoy observations covered all 31 days. Typical wave height was 2.1 ft (10th–90th percentile 0.9–3.9 ft), while mean average of more than one wave period type was 5.4 seconds (10th–90th percentile 2.9–8.7 seconds). Mean water temperature was 18.9°C (10th–90th percentile 18.4–19.6°C). 4 of 5,805 checked values (0.1%) were excluded by quality control. Across 13 comparable years, mean wave height was above the same-month mean of 2 ft and mean wave period was above the same-month mean of 5 seconds.

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

Typical Significant Wave Height

2.1ft
Mean: 2.2 ft
P10–P90: 0.9 — 3.9 ft
Recorded extremes

0.4 — 6.2 ft

Mean Observed Wave Period

5.4secs
P10–P90: 2.9 — 8.7secs
Recorded extremes

1.7 — 12.5secs

Observed Wave Direction

NE

Circular concentration: 50%

Mean Water Temperature

18.9°C
P10–P90: 18.4 — 19.6°C
Recorded extremes

18 — 19.9°C

Compared With Previous Augusts

Historical baseline from 18,761 observations across 13 years.

Wave Height
2.2ft
0.2ft above mean
Historical mean 1.969ft
Wave Period
5.4s
0.4s above mean
Historical mean 5s
Water Temperature
18.9°C
0.4°C above mean
Historical mean 18.5°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 Aug 2025Last observation shown
Metric
Mean significant wave height (ft)4433322111111122223QC rejected42222221222
Mean maximum wave height (ft)6644443222212224444764432222224
Mean peak period (s)7985599734434335664667896543444
Mean zero-crossing period (s)4543344333333334443444543333333
Mean energy period (s)-------------------------------
Mean wave power, kilowatts per metre-------------------------------
Mean peak wave directionNNEconcentration 99%NNEconcentration 100%NNEconcentration 100%Variableconcentration 28%NNWconcentration 41%NNEconcentration 100%NEconcentration 58%NNEconcentration 46%Sconcentration 50%NEconcentration 70%ESEconcentration 82%ENEconcentration 79%ENEconcentration 74%SSEconcentration 56%Nconcentration 95%NNEconcentration 100%NNEconcentration 99%NEconcentration 100%NNEconcentration 99%NNEconcentration 100%NNEconcentration 100%NNEconcentration 100%NNEconcentration 100%NNEconcentration 99%Econcentration 64%Econcentration 92%SSEconcentration 76%SSEconcentration 70%SEconcentration 72%Sconcentration 83%Sconcentration 95%
Mean directional spread (°)20.921.022.721.426.622.325.738.238.933.635.145.440.040.130.327.924.525.332.322.725.123.923.527.630.928.429.729.525.925.322.4
Mean water temperature(°C)19.419.219.119.018.818.718.718.818.818.819.019.119.319.519.719.719.619.519.419.218.918.718.518.418.518.518.618.518.418.318.2

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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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