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Ch. Lightship wave buoy daily means for Apr 2022

Daily means from the Ch. Lightship wave buoy for Apr 2022, 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

719 wave-buoy observations covered all 30 days. Typical wave height was 0 ft; wave-period data were unavailable. Typical wind was 13.9 mph (10th–90th percentile 5.8–25.3 mph) and mean water temperature was 10.8°C (10th–90th percentile 10.4–11.2°C). 835 of 3,595 checked values (23.2%) were excluded by quality control. Across 12 comparable years, mean wave height was below the same-month mean of 3.6 ft.

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

Typical Wave Height

0ft
Mean: 0 ft
P10–P90: 0 — 0 ft
Recorded extremes

0 — 0 ft

Available for 661 of 719 hourly samples

Mean Wave Period

-secs
P10–P90: - — -secs

Available for 0 of 719 hourly samples

Mean Water Temperature

10.8°C
P10–P90: 10.4 — 11.2°C
Recorded extremes

10.1 — 11.6°C

Available for 661 of 719 hourly samples

Typical Wind

Variable, 13.9mph
Mean: 14.9 mph
P10–P90: 5.8 — 25.3 mph
Recorded extremes

1.1 — 40.3 mph

Circular concentration: 26%

Compared With Previous Aprils

Historical baseline from 8,565 observations across 12 years.

Wave Height
0ft
3.6ft below mean
Historical mean 3.6ft
Wave Period
–
Not enough comparable data
Historical mean 7.7s
Water Temperature
10.8°C
0.6°C above mean
Historical mean 10.2°C

Chart showing grouped wave observations for Ch. Lightship. 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 Ch. Lightship wave buoy

Channel Lightship (WMO 62103) is a UK Met Office station in the central English Channel. Its offshore position provides marine observations away from the immediate influence of the coast and is useful for tracking conditions along this major shipping route. The feed can include wind, pressure, air and sea temperature, visibility and wave observations when available.

Metrics are rows; days run left to right.
Ch. Lightship wave buoy daily means Apr 2022Last observation shown
Metric
Mean wave height (ft)000000000000000000000000000000
Mean observed period(s)------------------------------
Mean wave power(kW/m)------------------------------
Mean wind directionNconcentration 100%NNEconcentration 96%NNEconcentration 49%Wconcentration 96%Wconcentration 98%WSWconcentration 98%Wconcentration 93%NNWconcentration 35%WNWconcentration 83%SEconcentration 71%ESEconcentration 94%SSEconcentration 81%SSWconcentration 90%SEconcentration 55%NWconcentration 49%ENEconcentration 88%SSEconcentration 45%Wconcentration 90%NWconcentration 93%NNEconcentration 92%ENEconcentration 97%ENEconcentration 99%NEconcentration 97%NNEconcentration 97%ENEconcentration 95%ENEconcentration 86%ENEconcentration 98%ENEconcentration 95%ENEconcentration 91%ENEconcentration 95%
Mean wind speed (mph)26111020172830161415161385591111121314221713121623191111
Mean water temperature(°C)10.310.310.310.310.410.510.610.510.610.610.610.610.810.810.710.710.810.910.911.011.111.011.111.111.111.111.011.011.211.1

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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.

Which wave period is shown?

The table shows the best period measurement supplied for each observation. It is not necessarily the energy period used to calculate wave power.

Tp
Peak period: the period at the strongest spectral peak.
Tavg
The provider's average wave period.
Tm02
A mean period calculated from the wave spectrum.
Tz
Mean zero-crossing period.
Reported
A legacy value whose period type was not recorded.
Mixed
A daily or monthly mean containing more than one period type.

Wave power needs a genuine energy period (Te). SurfHog does not substitute Tp, Tavg, Tm02 or Tz when Te is missing.

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 UK Met Office.

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