Cardoso - surf spot statistics

Cardoso in Brazil offers surfable waves year-round, with conditions varying significantly across seasons. The best months for surfing are typically from April to September, when ground swell percentages increase, wind conditions stabilize slightly, and swell size peaks. During this period, ground swell contributions range from 30% to 43%, providing better-quality, more consistent waves compared to wind swells, which dominate the rest of the year. May stands out with the highest ground swell influence (43%) and a mean swell size of 2.0m, though wind conditions remain challenging with only 20% good wind days. September sees the largest swells (2.2m), but poor wind conditions (89% bad winds) can be limiting. From October to March, wind swells overwhelmingly dominate (79–84%), and while the waves remain rideable, they tend to be less clean and smaller (1.6–1.9m). Wind conditions are generally unfavorable throughout the year, with good wind days rarely exceeding 20%. Surfers looking for the best compromise should target April to July, where ground swells are decent (35–42%), and wind conditions, though still poor, are slightly less severe than later in the season. The spot is best suited for experienced surfers who can handle onshore winds and mixed swell conditions.

In December, Cardoso offers decent surf conditions with an average swell height of 1.7m and a respectable 8.6s period, providing enough power for intermediate to advanced surfers. The swell is predominantly easterly to southerly, with the best consistency coming from ENE, E, and SE directions, where most waves fall in the 1-2.5m range. Southerly swells (S, SSE) contribute larger sets, occasionally exceeding 2.5m, making them ideal for those seeking more size and power. Wind conditions are less favorable, with only 15% of the time being ideal for surfing—typically when lighter easterly or variable breezes prevail. Stronger NNE to NE winds are common, creating choppy or cross-shore conditions, which may require patience for clean sessions. Overall, December delivers rideable waves, but wind management and timing are key for scoring the best sessions.