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Ch. Lightship wave buoy daily means for Oct 2021

Daily means from the Ch. Lightship 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

743 wave-buoy observations covered all 31 days. Typical wave height was 0 ft; wave-period data were unavailable. Typical wind was 18.3 mph (10th–90th percentile 6.9–28.7 mph) and mean water temperature was 15.9°C (10th–90th percentile 15.5–16.2°C). 1,091 of 3,715 checked values (29.4%) were excluded by quality control. Across 11 comparable years, mean wave height was below the same-month mean of 4.5 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 569 of 743 hourly samples

Mean Wave Period

-secs
P10–P90: - — -secs

Available for 0 of 743 hourly samples

Mean Water Temperature

15.9°C
P10–P90: 15.5 — 16.2°C
Recorded extremes

15.2 — 16.5°C

Available for 569 of 743 hourly samples

Typical Wind

SW, 18.3mph
Mean: 17.6 mph
P10–P90: 6.9 — 28.7 mph
Recorded extremes

1.1 — 48.3 mph

Circular concentration: 43%

Compared With Previous Octobers

Historical baseline from 8,048 observations across 11 years.

Wave Height
0ft
4.5ft below mean
Historical mean 4.5ft
Wave Period
–
Not enough comparable data
Historical mean 7.3s
Water Temperature
15.9°C
0.3°C above mean
Historical mean 15.6°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 Oct 2021Last observation shown
Metric
Mean wave height (ft)0000000000000000000000000000000
Mean observed period(s)-------------------------------
Mean wave power(kW/m)-------------------------------
Mean wind directionWSWconcentration 90%SSWconcentration 73%Wconcentration 94%SWconcentration 93%Wconcentration 90%Wconcentration 89%SWconcentration 73%Econcentration 97%ENEconcentration 81%NNEconcentration 98%NNEconcentration 87%NNWconcentration 94%Nconcentration 89%SWconcentration 86%WNWconcentration 95%Sconcentration 76%Sconcentration 94%Sconcentration 96%SSWconcentration 97%SWconcentration 87%NWconcentration 84%WNWconcentration 96%SSWconcentration 82%SSWconcentration 92%WSWconcentration 95%WSWconcentration 93%SSWconcentration 97%Sconcentration 99%SSWconcentration 86%SWconcentration 81%SWconcentration 80%
Mean wind speed (mph)21232226271991091111118677121823282315142119212124262332
Mean water temperature(°C)16.416.316.416.216.116.116.116.116.116.016.016.016.116.116.216.216.116.016.016.015.815.815.815.715.715.615.615.615.515.415.3

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.

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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