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Ch. Lightship wave buoy daily means for Jun 2012

Daily means from the Ch. Lightship wave buoy for Jun 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

697 wave-buoy observations covered all 30 days. Typical wave height was 3.3 ft (10th–90th percentile 1.6–8.2 ft), while mean reported wave period; measurement type unavailable was 7.2 seconds (10th–90th percentile 6–9 seconds). Typical wind was 17.3 mph (10th–90th percentile 6.9–29.9 mph) and mean water temperature was 13.1°C (10th–90th percentile 12.4–13.6°C). 5 of 3,443 checked values (0.1%) were excluded by quality control. Across 2 comparable years, mean wave height was above the same-month mean of 2.7 ft and mean wave period was below the same-month mean of 7.3 seconds.

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

Typical Wave Height

3.3ft
Mean: 4.1 ft
P10–P90: 1.6 — 8.2 ft
Recorded extremes

1 — 18.7 ft

Available for 692 of 697 hourly samples

Mean Wave Period

7.2secs
P10–P90: 6 — 9secs
Recorded extremes

4 — 11secs

Available for 690 of 697 hourly samples

Mean Water Temperature

13.1°C
P10–P90: 12.4 — 13.6°C
Recorded extremes

12 — 14.6°C

Available for 685 of 697 hourly samples

Typical Wind

SSW, 17.3mph
Mean: 17.7 mph
P10–P90: 6.9 — 29.9 mph
Recorded extremes

2.3 — 48.3 mph

Circular concentration: 44%

Available for 686 of 697 hourly samples

Compared With Previous Junes

Historical baseline from 1,439 observations across 2 years.

Wave Height
4.1ft
1.4ft above mean
Historical mean 2.7ft
Wave Period
7.2s
0.1s below mean
Historical mean 7.3s
Water Temperature
13.1°C
In line with the historical mean
Historical mean 13.1°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 Jun 2012Last observation shown
Metric
Mean wave height (ft)2354338QC rejected5233439105211363QC rejected3332QC rejected5
Mean observed period(s)7Reported9Reported7Reported7Reported6Reported7Reported7Reported8Reported7Reported6Reported7Reported8Reported8Reported7Reported9Reported8Reported8Reported7Reported6Reported6Reported6Reported7Reported7Reported7Reported8Reported8Reported9Reported7Reported7Reported7Reported
Mean wave power(kW/m)------------------------------
Mean wind directionWSWconcentration 38%Econcentration 80%WSWconcentration 91%WNWconcentration 35%SSEconcentration 81%SSWconcentration 96%Sconcentration 81%WSWconcentration 95%SWconcentration 76%Econcentration 59%NWconcentration 90%Nconcentration 38%SEconcentration 93%SEconcentration 90%SSWconcentration 97%SWconcentration 99%SWconcentration 81%SWconcentration 63%NEconcentration 36%ENEconcentration 87%SSWconcentration 80%WSWconcentration 95%SWconcentration 94%WSWconcentration 89%SWconcentration 51%SWconcentration 93%SSEconcentration 40%Sconcentration 33%SSWconcentration 94%SWconcentration 94%
Mean wind speed (mph)81624141718293719181111917243113117181830182391111182222
Mean water temperature(°C)13.012.412.312.412.412.512.612.612.712.712.913.013.313.313.013.013.213.313.513.313.213.213.313.313.513.513.513.513.513.7

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.

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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