Skip to content
Surfhog home
Menu

Brittany wave buoy daily means for Aug 2010

Daily means from the Brittany wave buoy for Aug 2010, 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

669 wave-buoy observations covered 29 of 31 days (94%). Typical wave height was 5.6 ft (10th–90th percentile 3.6–7.9 ft), while mean reported wave period; measurement type unavailable was 5.9 seconds (10th–90th percentile 5–7 seconds). Typical wind was 15 mph (10th–90th percentile 8.1–20.8 mph). All 2,676 checked values passed quality control.

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

Typical Wave Height

5.6ft
Mean: 5.7 ft
P10–P90: 3.6 — 7.9 ft
Recorded extremes

2 — 11.5 ft

Mean Wave Period

5.9secs
P10–P90: 5 — 7secs
Recorded extremes

4 — 8secs

Mean Water Temperature

-°C
P10–P90: - — -°C

Available for 0 of 669 hourly samples

Typical Wind

WNW, 15mph
Mean: 14.7 mph
P10–P90: 8.1 — 20.8 mph
Recorded extremes

2.2 — 30 mph

Circular concentration: 37%

Chart showing grouped wave observations for Brittany. 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 Brittany wave buoy

Brittany buoy (WMO 62163) is maintained jointly by the UK Met Office and Météo-France in the Bay of Biscay. Its exposed position west of Brittany monitors Atlantic conditions approaching western France and the western entrance to the English Channel. The international feed can include wind, pressure, temperature and wave observations when available.

Metrics are rows; days run left to right.
Brittany wave buoy daily means Aug 2010Last observation shown
Metric
Mean wave height (ft)565665--46555543447876769884369
Mean observed period(s)6Reported6Reported6Reported6Reported6Reported6Reported--5Reported5Reported6Reported5Reported5Reported5Reported5Reported5Reported5Reported6Reported6Reported6Reported6Reported6Reported6Reported7Reported6Reported6Reported7Reported6Reported6Reported7Reported6Reported
Mean wave power(kW/m)-------------------------------
Mean wind directionWNWconcentration 92%NNWconcentration 95%WNWconcentration 94%NWconcentration 85%WNWconcentration 87%WSWconcentration 95%--WSWconcentration 98%WSWconcentration 80%NNWconcentration 97%Nconcentration 98%Nconcentration 99%Nconcentration 98%Nconcentration 96%WNWconcentration 45%WNWconcentration 81%Wconcentration 52%SSWconcentration 98%SSWconcentration 99%SSWconcentration 99%SWconcentration 88%WNWconcentration 88%SWconcentration 59%SSWconcentration 92%SWconcentration 91%Nconcentration 90%NNEconcentration 98%NNEconcentration 93%ENEconcentration 90%ESEconcentration 98%
Mean wind speed (mph)151516201315--151711151815137146191816131712231416881524
Mean water temperature(°C)-------------------------------

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.

› Wave Buoy List