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.

March: Transitional Power

March sees the highest average swell height yet at 1.3m, with the longest period of 13.7s. The swell direction becomes even more focused: SW accounts for a whopping 49.5% of all waves, nearly half. The 1-1.5m range dominates, but there’s a healthy chunk of 1.5-2m (9.4% from SW). This is prime surfable territory. The bad news: ideal wind drops to just 27%, the lowest so far. Onshore winds from WSW (17.6%) and SW (14.2%) become more frequent, often blowing 10-20 kph. These winds ruin wave shape, creating sections that crumble or close out. Surfers must be strategic—target mornings before the sea breeze kicks up, or wait for a cold front passage that switches wind to offshore. March is a month of trade-offs: great swell but a fight for clean conditions. When it aligns, the power is undeniable.