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Chapel Point wave buoy daily means for Oct 2021

Daily means from the Chapel Point wave buoy for Oct 2021, 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

1,486 wave-buoy observations covered all 31 days. Typical wave height was 2.5 ft (10th–90th percentile 1.3–4.3 ft), while mean average of more than one wave period type was 6.4 seconds (10th–90th percentile 3.1–11.8 seconds). Mean water temperature was 13.9°C (10th–90th percentile 12.7–15.2°C). 9 of 5,932 checked values (0.2%) were excluded by quality control. Across 9 comparable years, mean wave height was below the same-month mean of 2.9 ft and mean wave period was above the same-month mean of 6 seconds.

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

Typical Significant Wave Height

2.5ft
Mean: 2.7 ft
P10–P90: 1.3 — 4.3 ft
Recorded extremes

0.5 — 7.7 ft

Mean Observed Wave Period

6.4secs
P10–P90: 3.1 — 11.8secs
Recorded extremes

1.8 — 15.4secs

Available for 744 of 745 hourly samples

Observed Wave Direction

Variable

Circular concentration: 24%

Most common: NNE (36%) · circular mean E

Mean Water Temperature

13.9°C
P10–P90: 12.7 — 15.2°C
Recorded extremes

12.3 — 16.1°C

Compared With Previous Octobers

Historical baseline from 12,808 observations across 9 years.

Wave Height
2.7ft
0.2ft below mean
Historical mean 2.92ft
Wave Period
6.4s
0.4s above mean
Historical mean 6s
Water Temperature
13.9°C
0.6°C above mean
Historical mean 13.3°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 Oct 2021Last observation shown
Metric
Mean significant wave height (ft)2333352112232233222255432233424
Mean maximum wave height (ft)3544573212454355334387553355646
Mean peak period (s)3444571112127568671174578121253344444
Mean zero-crossing period (s)3333354444445355333356533333334
Mean energy period (s)-------------------------------
Mean wave power, kilowatts per metre-------------------------------
Mean peak wave directionSSWconcentration 90%SSEconcentration 81%Sconcentration 93%Sconcentration 100%SSEconcentration 32%NNEconcentration 96%NNEconcentration 98%NNEconcentration 99%NNEconcentration 96%NNEconcentration 98%NNEconcentration 99%NNEconcentration 100%NNEconcentration 100%ENEconcentration 40%NNEconcentration 74%NNEconcentration 100%Variableconcentration 29%SSEconcentration 68%SSEconcentration 47%Variableconcentration 16%NNEconcentration 97%NNEconcentration 100%NNEconcentration 100%Sconcentration 88%Sconcentration 84%Sconcentration 97%Sconcentration 100%Sconcentration 100%SSEconcentration 95%SSEconcentration 83%SSEconcentration 88%
Mean directional spread (°)25.821.220.821.425.022.032.236.136.533.626.323.421.625.520.821.827.128.128.330.422.823.226.526.128.722.717.621.126.622.620.6
Mean water temperature(°C)15.915.615.315.014.814.414.414.514.714.714.614.414.314.213.913.813.713.713.713.813.513.313.112.912.812.712.612.612.912.812.6

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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