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Chapel Point wave buoy daily means for Apr 2015

Daily means from the Chapel Point wave buoy for Apr 2015, 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

1,440 wave-buoy observations covered all 30 days. Typical wave height was 1.8 ft (10th–90th percentile 0.8–3.7 ft), while mean peak wave period was 7.2 seconds (10th–90th percentile 3.1–11.9 seconds). Mean water temperature was 9°C (10th–90th percentile 7–10.8°C). 35 of 5,760 checked values (0.6%) were excluded by quality control. Across 2 comparable years, mean wave height was below the same-month mean of 2.5 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

1.8ft
Mean: 2 ft
P10–P90: 0.8 — 3.7 ft
Recorded extremes

0.4 — 5.8 ft

Mean Observed Wave Period

7.2secs
P10–P90: 3.1 — 11.9secs
Recorded extremes

1.7 — 18.2secs

Available for 719 of 720 hourly samples

Observed Wave Direction

NE

Circular concentration: 64%

Mean Water Temperature

9°C
P10–P90: 7 — 10.8°C
Recorded extremes

6.6 — 11.6°C

Compared With Previous Aprils

Historical baseline from 2,879 observations across 2 years.

Wave Height
2ft
0.5ft below mean
Historical mean 2.461ft
Wave Period
7.2s
1.2s above mean
Historical mean 6s
Water Temperature
9°C
1.1°C above mean
Historical mean 7.9°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 Apr 2015Last observation shown
Metric
Mean significant wave height (ft)543211111123221123321111334223
Mean maximum wave height (ft)------------------------------
Mean peak period (s)889101056911644578865575556111210946
Mean zero-crossing period (s)454464343333333434443343455333
Mean energy period (s)------------------------------
Mean wave power, kilowatts per metre------------------------------
Mean peak wave directionNNEconcentration 98%NNEconcentration 100%NNEconcentration 98%NEconcentration 97%NNEconcentration 99%NNEconcentration 97%ENEconcentration 46%NNEconcentration 98%NEconcentration 90%Econcentration 59%Variableconcentration 13%SWconcentration 38%NNEconcentration 57%Variableconcentration 23%Nconcentration 81%ENEconcentration 75%NEconcentration 90%NEconcentration 98%NNEconcentration 97%NEconcentration 99%NNEconcentration 97%NEconcentration 96%ENEconcentration 81%Variableconcentration 24%NNEconcentration 99%NNEconcentration 100%NNEconcentration 87%Nconcentration 79%Sconcentration 74%Variableconcentration 9%
Mean directional spread (°)21.619.222.324.224.933.941.133.639.736.328.623.226.229.135.732.833.834.427.924.031.433.029.629.626.518.619.227.924.923.0
Mean water temperature(°C)6.76.97.07.27.37.57.67.88.08.38.58.68.78.89.19.29.49.59.59.69.89.910.110.410.610.711.010.810.810.7

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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