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Leixões wave buoy observations on Fri, Aug 21, 2026

Hourly readings from the Leixões wave buoy for Fri, Aug 21, 2026, including available wave height, period, direction, wind and sea temperature data.

Last observation shown

Oldest observation available

Daily means for

Latest

Period Summary

Programmatically generated summary. Hog Says

48 wave-buoy observations were recorded during the day. Typical wave height was 6.3 ft (10th–90th percentile 5.5–7 ft), while mean peak wave period was 10.7 seconds (10th–90th percentile 10.3–11.5 seconds). All 144 checked values passed quality control.

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

Line chart showing wave height, wave period and sea temperature for Leixões. Use the detailed observations table below for the same data in text form.

About Leixões wave buoy

Leixões is an Instituto Hidrográfico Datawell Waverider moored in about 81 metres of water off northern Portugal. The directional station has operated since 1996 as part of the national MONIZEE network and represents the exposed Atlantic coast around Porto and the approaches to Leixões harbour.

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

Metrics are rows; hours run left to right. Times use your device time zone.
Leixões wave buoy hourly observations Fri, Aug 21, 2026Last observation shown
Metric
Significant wave height (ft)777777776666656666766667767777667766666666656555
Maximum wave height (ft)13101211121091199129108111110101011910111011111211129119111110121011109988912898
Peak period (s)1211111211111211111212111111111211111111101111119111111111111118111110111111111111111111111110
Mean period Tm02 (s)666666666666666666766777777676666665655555556556
Zero-crossing period (s)666666666666766767777778777776766666656666666666
Peak wave directionNNWNNWNWNNWNNWNWNNWNNWNNWNNWNNWNNWNNWNNWNNWNNWNNWNNWNNWNNWNNWNNWNNWNWNNWNWNWNNWNWNWNWNNWNWNNWNNWNWNNWNNWNWNNWNNWNNWNNWNNWNNWNNWNWNNW
Directional spread (°)16.017.016.021.019.018.012.015.014.015.018.018.016.018.020.019.015.017.016.014.016.014.017.013.018.018.015.013.016.021.021.023.022.019.015.017.023.025.016.013.022.021.017.029.011.020.017.020.0

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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 Instituto Hidrográfico MONIZEE network.

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

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