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Chapel Point wave buoy daily means for Jul 2025

Daily means from the Chapel Point wave buoy for Jul 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

1,456 wave-buoy observations covered all 31 days. Typical wave height was 1.6 ft (10th–90th percentile 0.9–3.2 ft), while mean average of more than one wave period type was 4.8 seconds (10th–90th percentile 2.6–7.4 seconds). Mean water temperature was 19.5°C (10th–90th percentile 19.1–19.9°C). All 5,783 checked values passed quality control. Across 13 comparable years, mean wave height was below the same-month mean of 1.9 ft and mean wave period was below the same-month mean of 5 seconds.

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

Typical Significant Wave Height

1.6ft
Mean: 1.8 ft
P10–P90: 0.9 — 3.2 ft
Recorded extremes

0.3 — 5.1 ft

Mean Observed Wave Period

4.8secs
P10–P90: 2.6 — 7.4secs
Recorded extremes

1.7 — 15.4secs

Observed Wave Direction

NE

Circular concentration: 62%

Mean Water Temperature

19.5°C
P10–P90: 19.1 — 19.9°C
Recorded extremes

18.6 — 20.6°C

Compared With Previous Julys

Historical baseline from 18,584 observations across 13 years.

Wave Height
1.8ft
0.1ft below mean
Historical mean 1.87ft
Wave Period
4.8s
0.2s below mean
Historical mean 5s
Water Temperature
19.5°C
1.7°C above mean
Historical mean 17.8°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 2025Last observation shown
Metric
Mean significant wave height (ft)23222144211122221112112QC rejected2122123
Mean maximum wave height (ft)3433326632123232222321363223234
Mean peak period (s)4564346876535443444544466545578
Mean zero-crossing period (s)3443334554333333333333344333345
Mean energy period (s)-------------------------------
Mean wave power, kilowatts per metre-------------------------------
Mean peak wave directionNEconcentration 76%Nconcentration 96%NNEconcentration 99%SSWconcentration 47%SSWconcentration 83%Variableconcentration 13%Nconcentration 98%NNEconcentration 100%NNEconcentration 100%NNEconcentration 89%ENEconcentration 83%NEconcentration 92%NEconcentration 98%Econcentration 57%Sconcentration 84%NNWconcentration 52%ENEconcentration 83%ENEconcentration 94%Econcentration 91%Econcentration 91%Econcentration 74%NNEconcentration 80%Nconcentration 95%Nconcentration 97%NNEconcentration 99%NNEconcentration 95%Nconcentration 97%NNEconcentration 99%NNEconcentration 96%NNEconcentration 99%NNEconcentration 99%
Mean directional spread (°)31.122.522.826.229.436.819.820.120.826.942.842.030.237.127.335.738.435.232.223.431.337.330.523.725.936.431.827.830.624.622.1
Mean water temperature(°C)19.319.319.219.219.219.219.019.019.119.319.619.719.719.819.719.519.619.819.919.819.819.819.919.919.919.919.719.519.419.419.4

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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