Matadouro seasonal overview
Best Surf Season (October - March)
The North Atlantic roars to life during these months as the polar jet stream strengthens, spawning powerful extratropical storms that march eastward toward the Portuguese coastline. Matadouro, with its west-facing exposure, sits right in the firing line for the dominant NW and WNW swells, which average 2.3-2.6m and carry long periods of 12-13s. This translates to pumping, heavy waves that can reach firing heights in the 1.5-2.5m range, with occasional XL pulses exceeding 2.5m. The ideal offshore wind from the east quadrant blows 20-27% of the time, creating clean, glassy faces. When the stars align, you get classic Portuguese beachbreak perfection.
Fair Surf Season (April & September)
These transition months see a slight easing in swell energy as the storm track shifts north. Average heights drop to 1.6-2.0m and periods settle into the 10.5-11.1s range, still delivering fun, solid waves in the 1-1.5m class and occasional pumping sets. NW and WNW swells still dominate, but the wind window narrows: ideal offshore conditions occur only 14-15% of the time, with increasing northerly winds creating side-shore chop. Still, there are plenty of rippable days with the right timing.
Low Surf Season (May - August)
Summer settles in with a dramatic drop in both swell size and period. Average wave heights fall to 1.4-1.7m and periods shrink to 8.5-9.9s, yielding mostly small, fun-sized waves in the 0.5-1.5m range. The dominant swell shifts to shorter-period NW and NNW swells, often choppy and messy. Compounding the issue, strong northerly winds dominate the pressure gradient, blowing side-shore or onshore over 50% of the time. Ideal offshore wind days are rare, ranging from 3-11%, making this the least consistent season. However, early mornings or late evenings can still offer groveling sessions when a background swell aligns with a light land breeze.
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Conditions at Matadouro in December
December: Peak Season Arrives
December reaches winter intensity: average swell height 2.5m, period 12.7s – very powerful, long period. Swell is heavily weighted toward NW (21.2%) and WNW (15.2%), with significant NNW (11.3%) and even some W (6.1%). Most waves are in the 1.5-2.5m+ range, pumping to XL. Ideal wind is the highest at 26%, with frequent east winds. N winds (11.4%) are much less dominant. December delivers some of the best and most consistent surf of the year at Matadouro.
Average Spot conditions at Matadouro in December
Swell history for December
Wind history for December
Swell quality
Analyze the groundswell consistency at Matadouro during December. Based on historical data, there is a % probability of groundswell occurring this month. The chart below provides a detailed breakdown of the average wave height distribution, offering deep insights into the swell quality and surf potential you can expect at Matadouro for your next trip in December.
Ground swell
Ground swell by size
Wind conditions
Evaluate the wind and swell alignment at Matadouro for December. Our analysis shows that favorable offshore or side-shore winds coincide with surfable swell approximately % of the time. The accompanying graph illustrates the average size distribution of waves during these optimal wind windows at Matadouro.
