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.

March in Mundaka offers decent surf conditions with a mix of small to solid waves. The average swell height is 1.5m, paired with a strong period of 12.1s, indicating well-organized, powerful waves—especially from the NW and NNW directions, which dominate the swell distribution. These directions frequently produce waves in the 1-2.5m range, with a notable percentage of larger sets exceeding 2.5m (around 6-9% from NW/NNW). However, swells from other directions are generally weaker, limiting variety. Wind conditions are somewhat hit-or-miss, with only 28% of the time being ideal (likely light offshore or cross-offshore winds). The most common winds come from the W and WNW, often blowing in the 10-30kph range, which can create chop or even become onshore at higher speeds. While March isn’t peak season, Mundaka can still fire on NW/NNW swells with clean conditions—patience and timing are key for scoring those classic, hollow barrels.