Boca Barranca - surf spot statistics

Boca Barranca in Costa Rica is a renowned river-mouth point break that offers long, peeling left-hand waves, heavily dependent on ground swells for quality surf. Analyzing the monthly averages, the best time to surf here is during the dry season, particularly from **December to April**, when ground swell consistency is high (80-87%), and swell size is manageable, averaging 0.8m to 1.0m. This period also sees slightly better wind conditions, with favorable winds occurring 37-44% of the time, though onshore winds are still frequent. The peak months for reliable ground swells are **February to May**, with March and April offering the best balance between swell size (0.9m-1.0m) and consistency. However, wind conditions are less ideal during these months, with bad winds prevailing 60-65% of the time, meaning early mornings often provide the cleanest waves. The wet season (**May-November**) brings larger swells (1.1m-1.2m) but also higher chances of onshore winds, particularly from September onward when bad winds occur up to 68% of the time. September and October see a slight drop in ground swell dominance (81-83%) and increased wind swell influence, which can make conditions less predictable. For surfers prioritizing clean, rideable waves, **December to February** may be optimal despite smaller swell sizes, as wind conditions improve slightly compared to later months. Overall, Boca Barranca is most consistent in the first half of the year, but surfers should expect frequent wind challenges regardless of season. Early sessions are recommended to maximize glassy conditions.

April at Boca Barranca offers consistent surf with a dominant swell direction from the SSW, producing a solid mix of wave heights. The average swell height is 1.0m, with a strong period of 14.9s—indicating powerful, well-spaced waves that hold up nicely on this long, peeling point break. Most waves fall in the 0.5-1.5m range (77.5% of the time), with larger sets up to 2.5m occurring occasionally (1.7%). The SSW swell direction aligns well with the break, ensuring clean, organized walls ideal for carving and longer rides. Wind conditions are manageable, with light to moderate speeds (0-20kph) prevailing 63% of the time. However, only 37% of winds are truly favorable (typically light offshore or glassy), meaning mornings often provide the cleanest conditions before afternoon breezes pick up. Expect some texture later in the day, but the consistent groundswell and wave quality make April a reliable month for intermediates and advanced surfers, especially those comfortable with occasional overhead sets. Prioritize early sessions for optimal wind conditions.