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Chapel Point wave buoy daily means for Jul 2023

Daily means from the Chapel Point wave buoy for Jul 2023, 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

1,472 wave-buoy observations covered all 31 days. Typical wave height was 1.8 ft (10th–90th percentile 1–3.2 ft), while mean average of more than one wave period type was 5.7 seconds (10th–90th percentile 2.6–9.5 seconds). Mean water temperature was 17.7°C (10th–90th percentile 17.4–18.1°C). 9 of 5,874 checked values (0.2%) were excluded by quality control. Across 11 comparable years, mean wave height was above the same-month mean of 1.8 ft and mean wave period was above the same-month mean of 4.9 seconds.

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

Typical Significant Wave Height

1.8ft
Mean: 2 ft
P10–P90: 1 — 3.2 ft
Recorded extremes

0.6 — 5.6 ft

Mean Observed Wave Period

5.7secs
P10–P90: 2.6 — 9.5secs
Recorded extremes

1.7 — 13.3secs

Available for 742 of 743 hourly samples

Observed Wave Direction

Variable

Circular concentration: 22%

Most common: NNE (40%) · circular mean ENE

Mean Water Temperature

17.7°C
P10–P90: 17.4 — 18.1°C
Recorded extremes

16.9 — 18.9°C

Compared With Previous Julys

Historical baseline from 15,628 observations across 11 years.

Wave Height
2ft
0.2ft above mean
Historical mean 1.837ft
Wave Period
5.7s
0.8s above mean
Historical mean 4.9s
Water Temperature
17.7°C
0.1°C below 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 2023Last observation shown
Metric
Mean significant wave height (ft)2222222211211243112222243221222
Mean maximum wave height (ft)3433322322322364222234374442233
Mean peak period (s)44510895553433644478985468897333
Mean zero-crossing period (s)3334443443333343345644345444333
Mean energy period (s)-------------------------------
Mean wave power, kilowatts per metre-------------------------------
Mean peak wave directionNWconcentration 41%NWconcentration 34%Variableconcentration 24%NNEconcentration 61%NNEconcentration 94%NEconcentration 86%ESEconcentration 55%Econcentration 98%ENEconcentration 99%SSEconcentration 66%Sconcentration 94%SSWconcentration 53%SSWconcentration 45%ENEconcentration 63%Sconcentration 94%Sconcentration 97%Variableconcentration 24%NNEconcentration 99%NNEconcentration 100%NNEconcentration 99%NNEconcentration 100%SSEconcentration 31%Variableconcentration 30%NNEconcentration 99%NNEconcentration 100%NNEconcentration 99%NNEconcentration 100%NNEconcentration 100%Sconcentration 88%SSWconcentration 91%Sconcentration 90%
Mean directional spread (°)28.339.732.831.127.230.633.026.127.732.027.031.240.422.821.924.732.927.924.323.923.421.530.122.621.222.422.421.726.326.629.3
Mean water temperature(°C)18.418.217.917.717.517.417.517.617.817.918.018.018.018.017.917.717.617.617.617.617.617.517.417.517.417.417.517.617.717.617.6

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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