Caldera - surf spot statistics

Caldera, Costa Rica, offers consistent surf conditions year-round, with ground swells dominating the swell regime (80-87% occurrence) and minimal wind swell influence (0-7%). The mean swell size ranges from 0.8m in the early and late months (January, February, December) to 1.2m in the mid-year period (June-September), making it a solid spot for surfers who prefer smaller to medium-sized waves. The best months for surfing in Caldera are typically November through March, when ground swells remain strong (80-86%), and wind conditions improve slightly, with good wind days occurring 41-48% of the time—significantly better than the mid-year months. December and January are particularly favorable, combining decent swell size (0.8m) with relatively lower onshore wind interference (bad wind days at 52-54%). From April to October, swell height increases, but unfavorable winds become more prevalent (64-72% bad wind days), particularly in September, which has the worst wind conditions (72% bad days). If you prioritize cleaner conditions over sheer swell size, target the winter months. However, if you’re comfortable with stronger winds in exchange for slightly bigger waves, June-August can still work, especially since ground swell consistency remains high (85%).

In July, Caldera, Costa Rica offers surfers consistent but somewhat mixed conditions. The average swell height is 1.2m, with a strong average period of 14.4s, indicating powerful, well-spaced waves. The dominant swell direction is SSW (42.57% of waves in the 1-1.5m range), supplemented by SW and S swells, creating a mix of medium-sized waves with occasional larger sets up to 2.5m. Wind conditions are variable, with onshore winds (SSW and SW) occurring frequently, but 35% of the time the wind is ideal for surfing, typically light (below 20kph). Expect a mix of clean and slightly choppy sessions depending on wind direction, with the best conditions arising when lighter winds align with the SSW swell. Overall, July provides surfable waves most days, though wind consistency is a limiting factor.