Conditions at Mundaka in December
December: Winter's Full Spectrum
December closes the year in typical Basque winter form. The average swell is 6ft (1.9m), the average period is 12.4s, and the direction mix is nearly perfect: NW (28.2%), WNW (21.6%), NNW (9.8%) and solid W (4.4%) keep the north-facing coast well fed. The height spectrum ranges from playful 2-3ft (0.5-1m) days to proper 6.5-8ft (2-2.5m) groundswells, with occasional over-8ft (2.5m+) sets when an Atlantic low bombs out quickly. For a point break like Mundaka, these are the conditions that create the fast, tube-like walls.
The wind regime is equally wintry: SSW is the standout offshore flow at a huge 16.0%, and S adds 11.7%, making the ideal wind score 26%. That comes with a trade-off-rain is frequent at 3.82mm/day, air temperatures average 10.7°C, and the water cools to 14.1°C. In December, when a low-pressure system stalls over the British Isles and the pressure gradient tightens over northern Spain, Mundaka can be firing with clean offshore texture and serious, cranking lefts. Catch it right and it is pure year-end magic.
Average Spot conditions at Mundaka in December
Swell history for December
Wind history for December
Swell quality
Analyze the groundswell consistency at Mundaka 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 Mundaka for your next trip in December.
Ground swell
Ground swell by size
Wind conditions
Evaluate the wind and swell alignment at Mundaka 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 Mundaka.