Stockton - surf spot statistics

Stockton, United States, offers a mix of conditions year-round, but the best months for surfers typically align with increased swell energy, favorable wind conditions, and lower percentages of no-swell days. The data shows that September stands out as the prime month, with the highest ground swell contribution (18%), relatively lower wind swell dominance (60%), and the lowest chance of no swell (22%). Additionally, September has the best wind conditions, with 23% good winds—the highest of any month—and the mean swell size at 0.8m, providing decent wave power. March and October also present decent opportunities, with mean swell sizes of 0.8m and manageable wind conditions, though ground swell percentages are lower (9% and 11%, respectively). Late summer/early fall (August-October) generally provides the most consistent surf due to a balance of swell types and slightly improved winds. Winter months (December-February) suffer from poor wind conditions (over 85% unfavorable) despite some swell activity, while spring and early summer (April-July) see higher wind swell dominance but weaker overall conditions. For surfers prioritizing quality over frequency, September is the clear standout, offering the best combination of swell consistency, wave size, and wind conditions at Stockton.

October at Stockton offers modest but surfable conditions with an average swell height of 0.8m and a decent period of 7.9s. The primary swell directions are ESE, SE, and SSE, contributing to the majority of waves in the 0.5-1.5m range, with occasional larger sets up to 2.5m. The best quality likely comes from ESE swells, which align better with the beach and account for 15-20% of waves in the 1-2.5m range. Wind conditions are less favorable, with only 17% of days offering ideal offshore or light cross-shore winds (typically from the W to NW directions). Stronger onshore winds (S to E) are more common, creating choppier conditions. While October isn’t a high-performance month, patient surfers can score clean, waist-to-head-high waves on days with lighter W/NW winds, especially when ESE swells combine with the right wind window. Expect smaller, weaker waves during periods of SE or S wind/swell overlap.