Manazillo Bay - surf spot statistics

Best Surf Season (October - March)

The heart of Manazillo Bay’s surf season beats strongest from October through March. During this period, the North Pacific storm track fires up, sending long-period swell trains marching toward the Mexican coast. The average wave period hovers in the 13-14 second range, meaning powerful, lined-up waves that wrap nicely into the bay. Offshore winds from the north and east (N, NNE, NE, ENE) dominate a significant portion of the time—peaking at 51% in September and staying above 40% through March. This creates clean, glassy faces for peak performance. Swell directions are predominantly SW and WSW, which hit the west-facing beach perfectly. Expect fun to solid 1-1.5m waves on average, with occasional pumping 1.5-2.5m sets when a strong storm aligns. This is the go-to window for consistent quality.

Fair Surf Season (June - September)

Summer brings a different flavor to Manazillo. The swell height actually peaks in September at 1.7m, and the long period remains impressive, often in the 13-14 second range. However, the wind regime becomes more mixed. While the percentage of ideal offshore winds remains relatively high (41-51%), the trade winds often swing from the SSE to SW, introducing lumpy texture or onshore slop. The comfort zone shifts: mornings and evenings offer the cleanest conditions as the sea breeze picks up. Swell angles from SSW and SW still work well, but occasional S or SSE swell creeps in, reducing quality. Despite the wind challenges, when the pressure gradient sets up a northerly flow, the bay can fire with punchy, rippable waves, making summer a solid option for those willing to work the tides.

Low Surf Season (April - May)

April and May mark the most difficult months for surfing at Manazillo Bay. The average swell height is still decent (1.4-1.5m), and the period remains long (14+ seconds), but the wind statistics tell a harsh story. Ideal offshore wind frequencies drop to just 21-22%, meaning the vast majority of days are plagued by onshore winds from the SW and WSW. These directions not only create chop but also directly oppose the wave face, killing any clean steeper sections. While the occasional morning glass-off or a passing pressure system can align the stars, consistency is low. This is the time to have alternate plans—exploring other spots or just waiting for that rare window when the bay turns on for a session of fun-sized, groveling waves.

April: Windy Potential

April’s numbers look promising at first glance: average swell height 1.4m, period 14.1s. But the devils in the detail. A massive 54.4% of swell comes from the SSW—still within the optimal window—yet the remaining 40.2% from SW and 4.9% from WSW are also good. The problem is wind: ideal offshore conditions occur only 21% of the time. Onshore winds from WSW (19.5%) and SW (16.1%) are the dominant players, often in the 10-20 kph range. This creates bumpy, chopped-out waves that are frustrating to surf. The average swell height continues to rise, and the long period means boatloads of energy, but consistency suffers. The smart play is to watch for early-morning windows when the land breeze sets up a light offshore from the north. Those fleeting moments can offer clean, decent waves before the garbage wind kicks in.