Playa Avellanes in Costa Rica offers consistent surf conditions year-round, with ground swells dominating nearly every month, rarely dropping below 92%. This ensures reliable wave energy, though the swell size remains moderate, averaging between 1.2m and 1.5m. The best time to surf here depends on a balance between swell consistency, size, and favorable winds. From June to August, the swell peaks slightly in size (1.4m-1.5m), but wind conditions are most favorable in July (51% good winds) and November (54% good winds), making these standout months. While winter months (December-February) maintain solid ground swells, they suffer from higher onshore wind interference (61-64% bad winds). Late-year months like November offer the best compromise—solid swells, decent size, and the highest chance of offshore or light winds. Early summer (June-August) is another solid window, with July being particularly reliable for cleaner conditions. If prioritizing wave quality over size, November stands out, while those seeking slightly larger waves may prefer mid-year despite somewhat riskier winds. Overall, Playa Avellanes delivers dependable surf, but late-year and mid-summer months provide the most optimal combination of conditions.