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.

April in Mundaka offers moderate surf conditions with an average swell height of 1.2m and a solid period of 10.9s, indicating consistent, well-formed waves. The predominant swell direction comes from the NW to NNW, with the highest frequency of rideable waves (1-2.5m) originating from these sectors—especially NNW, which dominates with 19.71% of waves in the 0.5-1m range and 15.85% in the 1-1.5m range. Larger swells (2m+) are rare but possible, primarily from NW and NNW. Wind conditions are less favorable, with only 24% of days offering ideal offshore or light cross-shore winds (typically ENE to E). Winds from the W to NW are more common and often problematic, blowing onshore at moderate speeds (10-30kph), which can degrade wave quality. While April isn’t peak season for Mundaka’s legendary barrels, it provides decent opportunities for experienced surfers, particularly on days when NW/NNW swells coincide with light easterly winds. Expect smaller, cleaner sessions early in the day before afternoon winds pick up.