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.

October at Boca Barranca delivers consistent, high-quality surf with a dominant SSW swell direction, making it an excellent choice for intermediate to advanced surfers. The average swell height is 1.1m, but the swell period is a solid 14.2s, indicating powerful, well-spaced waves. The majority of waves fall in the 1-1.5m range (50.29% from SSW), with some larger sets up to 2.5m when conditions align. The long-period energy ensures clean, groomed waves, particularly during mornings when wind conditions are most favorable. Speaking of wind, it’s onshore (SSW to SW) about 65% of the time but remains light to moderate (under 20kph), offering manageable conditions. The remaining 35% sees ideal offshore or light cross-shore winds (WNW to NE), primarily in the early hours. Crowds can be an issue due to the spot’s reliability, but the long, peeling rights are worth it. Watch for higher tides to soften the steep takeoffs, especially on bigger days. Overall, October is prime time here—expect fast, hollow sections and long rides with the right wind/swell combo.