Conditions at Zarautz in January
January: Peak Season Groundswell
January is the heart of the Basque winter. The North Atlantic is in full roar, and Zarautz sees an average swell height of around 7ft (2.1m) with a long-period 12.7s pulse. The swell rose is dominated by a textbook winter distribution: 28.3% from the NW, 25.8% from the WNW and 7.9% from the NNW, meaning the vast majority of incoming energy hits the beach within its optimal directional window. A healthy chunk of that swell arrives in the 1.5-2.5m (5-8ft) range, with occasional XXL pulses over 2.5m (8ft+) rolling in from deep Atlantic lows.
On the wind side, January offers the clean, offshore conditions Zarautz craves: southerly winds blow 17.9% of the time and SSW winds another 12.5%, giving the bay an offshore groom ideal for holding open faces. The water temperature is a cool 13.3°C while air temps average 9.1°C, so cold water and winter rubber are non-negotiable. With ideal conditions 43% of the time, this is one of the most reliable months of the year for big, powerful, firing surf along the Basque coast.
Average Spot conditions at Zarautz in January
Swell history for January
Wind history for January
Swell quality
Analyze the groundswell consistency at Zarautz during January. 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 Zarautz for your next trip in January.
Ground swell
Ground swell by size
Wind conditions
Evaluate the wind and swell alignment at Zarautz for January. 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 Zarautz.