La Isla - surf spot statistics

La Isla in Peru is a consistent year-round surf spot, heavily dominated by ground swells, making it a reliable destination for surfers seeking powerful, clean waves. The swell is almost exclusively groundswell, with percentages ranging from 91% to 99% across all months, ensuring high-quality waves with minimal wind swell interference. The mean swell size varies from 1.4m in January and December to 2.0m from June to August, peaking in the middle of the year. Wind conditions are the primary limiting factor at La Isla, with bad onshore winds prevailing over 93% of the time in every month, often reaching 99-100% from April to November. The best wind conditions, though still rare, occur in January, February, and March, with 4-7% favorable offshore winds—making these months the most promising for surfers. Given these patterns, the optimal window for surfing at La Isla is from February to March. During this period, the swell remains strong (1.5-1.6m) while offering slightly higher chances of clean offshore winds compared to the rest of the year. The larger swell from June to August is appealing for experienced surfers, but the near-constant onshore winds make conditions challenging. If you prioritize wave quality over wind conditions, the mid-year months provide the biggest waves, but expect choppier surf. For the best balance of size and wind, early year surfing is ideal.

December at La Isla, Peru, offers consistent but often challenging conditions for surfers. The average swell height is 1.4m with a solid 13.4s period, indicating well-spaced, powerful waves. Most swells come from the SSW and SW directions (totaling ~82% of waves), primarily in the 1-2m range, with some larger sets up to 2.5m. These swells are clean and organized, ideal for intermediate to advanced surfers. However, wind conditions are less favorable: dominant S/SSE winds (over 65% of the time) blow at 10-30kph, creating onshore chop that can degrade wave quality. Only 1% of winds are truly ideal (light/variable), so mornings or protected sections may offer brief clean windows. Expect a mix of punchy beachbreak peaks and occasional larger, heavier waves—best suited for those comfortable in powerful surf with variable wind.