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.