Playa Guiones in Costa Rica is a consistent year-round surf destination with reliable ground swells dominating the wave conditions. The best months for surfers are typically from November to April, when the swell is steady, and wind conditions improve. During this period, ground swell probability remains high (92-100%), with mean swell sizes ranging from 1.0m to 1.2m. December and January offer the most favorable wind conditions, with good winds occurring over 50% of the time, making them prime months for clean, surfable waves. February and November also provide solid conditions, though winds can be slightly less consistent. From May to October, the swell size increases slightly (1.4m-1.5m), but offshore winds become less reliable, with bad wind conditions peaking around 60-70%, particularly from June to September. September is the windiest month, with only 27% good wind days. While the waves are larger during these months, the frequent onshore winds can make conditions choppy and less ideal. Overall, the peak season for the best balance of swell consistency and favorable winds is late November through early April, with December and January standing out as the most reliable months for high-quality surfing at Playa Guiones.