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Ch. Lightship wave buoy daily means for Oct 2012

Daily means from the Ch. Lightship wave buoy for Oct 2012, 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

745 wave-buoy observations covered all 31 days. Typical wave height was 4.3 ft (10th–90th percentile 2–7.9 ft), while mean reported wave period; measurement type unavailable was 7.3 seconds (10th–90th percentile 6–9.6 seconds). Typical wind was 23 mph (10th–90th percentile 10.4–34.5 mph) and mean water temperature was 15.2°C (10th–90th percentile 14.5–15.7°C). 1 of 3,725 checked values (0%) were excluded by quality control. Across 2 comparable years, mean wave height was above the same-month mean of 4 ft and mean wave period was above the same-month mean of 7.1 seconds.

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

Typical Wave Height

4.3ft
Mean: 4.7 ft
P10–P90: 2 — 7.9 ft
Recorded extremes

1 — 16.4 ft

Mean Wave Period

7.3secs
P10–P90: 6 — 9.6secs
Recorded extremes

4 — 15secs

Mean Water Temperature

15.2°C
P10–P90: 14.5 — 15.7°C
Recorded extremes

14 — 15.9°C

Available for 744 of 745 hourly samples

Typical Wind

Variable, 23mph
Mean: 22.8 mph
P10–P90: 10.4 — 34.5 mph
Recorded extremes

3.4 — 47.2 mph

Circular concentration: 16%

Compared With Previous Octobers

Historical baseline from 1,466 observations across 2 years.

Wave Height
4.7ft
0.7ft above mean
Historical mean 4ft
Wave Period
7.3s
0.2s above mean
Historical mean 7.1s
Water Temperature
15.2°C
0.1°C below mean
Historical mean 15.3°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 2012Last observation shown
Metric
Mean wave height (ft)55647433544642461084255324873626
Mean observed period(s)7Reported7Reported7Reported7Reported8Reported6Reported8Reported7Reported9Reported8Reported6Reported7Reported7Reported6Reported6Reported7Reported8Reported8Reported8Reported9Reported11Reported11Reported10Reported7Reported6Reported7Reported6Reported5Reported7Reported6Reported6Reported
Mean wave power(kW/m)-------------------------------
Mean wind directionWSWconcentration 91%WSWconcentration 98%WSWconcentration 95%WSWconcentration 80%WSWconcentration 85%NEconcentration 51%Econcentration 89%SWconcentration 62%Variableconcentration 13%ESEconcentration 69%SSWconcentration 57%Wconcentration 90%WNWconcentration 92%NNWconcentration 83%WSWconcentration 85%WSWconcentration 74%SSWconcentration 94%SSWconcentration 92%Variableconcentration 28%Sconcentration 32%ENEconcentration 90%NEconcentration 92%ENEconcentration 79%ENEconcentration 90%Econcentration 96%NEconcentration 93%Nconcentration 97%WNWconcentration 83%WSWconcentration 96%WNWconcentration 66%SWconcentration 95%
Mean wind speed (mph)252726212625221912162529251428303326892117131924343424281231
Mean water temperature(°C)15.815.715.615.615.615.515.515.615.715.615.715.515.415.315.315.315.415.315.215.115.115.115.215.115.114.914.414.414.514.514.4

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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