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Weston Bay wave buoy daily means for Sep 2020

Daily means from the Weston Bay wave buoy for Sep 2020, 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

1,432 wave-buoy observations covered all 30 days. Typical wave height was 1.3 ft (10th–90th percentile 0.3–2.6 ft), while mean average of more than one wave period type was 4.5 seconds (10th–90th percentile 2.5–6.3 seconds). Mean water temperature was 17.3°C (10th–90th percentile 15.9–18°C). All 5,695 checked values passed quality control.

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

Typical Significant Wave Height

1.3ft
Mean: 1.4 ft
P10–P90: 0.3 — 2.6 ft
Recorded extremes

0.1 — 4.4 ft

Mean Observed Wave Period

4.5secs
P10–P90: 2.5 — 6.3secs
Recorded extremes

1.7 — 11.8secs

Observed Wave Direction

W

Circular concentration: 71%

Mean Water Temperature

17.3°C
P10–P90: 15.9 — 18°C
Recorded extremes

15.5 — 18.6°C

Available for 714 of 718 hourly samples

Chart showing grouped wave observations for Weston Bay. 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 Weston Bay wave buoy

Weston Bay is a National Network Datawell Directional WaveRider in the upper Bristol Channel off Weston-super-Mare. Deployed in September 2009, it builds a record in a shallow, strongly tidal estuary where extensive intertidal flats and a limited seaward fetch influence the local sea state.

Its current data source reports wave height, wave period, wave direction, directional spread, wave power and sea temperature.

Metrics are rows; days run left to right.
Weston Bay wave buoy daily means Sep 2020Last observation shown
Metric
Mean significant wave height (ft)012221222122111111210122322111
Mean maximum wave height (ft)113332233133211122320134433112
Mean peak period (s)645555554545564434434355444555
Mean zero-crossing period (s)433333333333443333333334333333
Mean energy period (s)------------------------------
Mean wave power, kilowatts per metre------------------------------
Mean peak wave directionWSWconcentration 95%WSWconcentration 95%WSWconcentration 94%WSWconcentration 94%WSWconcentration 95%WSWconcentration 95%WSWconcentration 97%WSWconcentration 97%Wconcentration 84%Wconcentration 98%WSWconcentration 97%Wconcentration 99%Wconcentration 98%Wconcentration 83%Wconcentration 85%WNWconcentration 52%Nconcentration 95%Nconcentration 94%NNEconcentration 93%Nconcentration 92%NWconcentration 74%SWconcentration 66%WSWconcentration 95%WSWconcentration 87%NWconcentration 83%NWconcentration 58%Wconcentration 88%WSWconcentration 91%Wconcentration 97%WSWconcentration 96%
Mean directional spread (°)42.035.227.428.128.127.727.524.227.428.220.217.519.129.731.736.134.333.529.736.549.142.126.021.025.624.027.425.530.927.4
Mean water temperature(°C)18.118.018.017.917.817.717.717.717.817.817.617.617.717.717.817.917.917.717.417.417.417.417.316.916.516.115.915.815.915.7

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.

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 Regional Coastal Monitoring Programme.

Learn how SurfHog combines, checks and summarizes observations in the data and methodology notes.

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