Mundaka - surf spot statistics

Mundaka is a world-class left-hand river mouth wave that thrives on powerful, well-organized ground swell and favorable wind conditions. The data shows that the best months for surfing here are from October through March, when ground swell dominates (65-85% occurrence), mean swell heights range from 1.3m to 1.8m, and the likelihood of good wind conditions peaks at 30-31% (compared to the summer lows of 19-23%). Winter months, particularly December to February, offer the most consistent and powerful swells, though wind conditions remain challenging (69-72% bad winds). Spring and summer see a sharp decline in quality, with increasing wind swell dominance, smaller waves (0.8-1.2m), and worse wind odds (74-81% unfavorable). September marks the transition back to better conditions, while April through August are generally inconsistent due to higher wind swell influence and onshore winds. For experienced surfers targeting Mundaka's legendary barrels, the prime window is autumn through early winter when the Atlantic swell engine is most active and wind chances slightly improve, despite still being predominantly marginal. The spot's reliance on precise sandbar formation means these stats only tell part of the story, but the trend clearly favors late fall and winter for the biggest, cleanest sessions.

June in Mundaka tends to offer relatively small but clean conditions, with an average swell height of 0.9m and a decent period of 9.3s. The best swells come from the NW, NNW, and WNW directions, where most waves fall in the 0.5-2m range, with the largest portion (23.93%) being 0.5-1m from NNW. Larger swells (1.5-2.5m) occur occasionally but are rare. Wind conditions are less favorable, with only 19% of days providing ideal offshore or light cross-shore winds. The predominant winds come from the NW and W, often in the 10-30kph range, which can create chop or cross-shore interference. However, mornings may offer cleaner sessions before winds pick up. Overall, June is a quieter month with smaller, beginner-friendly waves and occasional good days when wind and swell align—best suited for longboarding or relaxed surfing rather than high-performance sessions.