Witches Rock - surf spot statistics

Witches Rock in Costa Rica is a consistent surf spot with reliable conditions year-round, primarily powered by ground swells. The swell is almost always present, with ground swells dominating 85-99% of the time, peaking in April (99%). Wind swells are minimal (1-15%), and there are virtually no flat days (0% no swell). The mean swell size hovers around 1.2-1.4m, slightly larger from May to September (1.3-1.4m). Wind conditions are the most critical variable for quality surfing here. Good offshore or light winds (optimal for surfing) occur 24-44% of the time, with the highest likelihood from June to November (peaking at 44% in November). The worst wind conditions (onshore or strong winds) are most common from December to April (65-76%), making these months less reliable despite consistent swell. The best months for surfing at Witches Rock are generally June through November, when the combination of solid ground swell (92-97%) and favorable wind conditions (40-44% good winds) aligns best. November stands out with the highest chance of clean conditions (44% good winds) and a manageable 1.2m swell. While the swell is slightly smaller than mid-year, the improved wind setup makes late-year sessions more reliable. May to August also offers larger swells (1.3-1.4m) and decent wind odds (37-43%), though slightly less consistent than the late-season window. Early-year months (January-April) see higher onshore wind interference (65-76% bad winds), reducing wave quality despite the strong swell presence. For surfers prioritizing clean, rideable waves, the sweet spot is late dry season into early wet season (June-November), with November being the prime month.

December at Witches Rock delivers consistent, high-quality surf with an average swell height of 1.2m and a solid 13.3s period, providing powerful, well-organized waves. The predominant swells come from the SSW and SW directions, accounting for nearly 60% of the waves, offering clean, rideable conditions in the 1-1.5m range (31.65% SW, 25.04% SSW). Larger sets up to 2.5m are possible but rare, ensuring manageable yet punchy waves for advanced surfers. Wind conditions are a mix, with ideal offshore or light winds occurring 31% of the time. However, NE winds (20-40kph) dominate, creating choppy conditions on roughly 50% of days—early mornings or late evenings often provide cleaner windows. The spot handles these winds decently due to its exposure, but peak NE gusts can impact quality. Overall, December is a prime month with reliable swell energy, though timing sessions around wind shifts is key for optimal performance.