Playa Nosara - surf spot statistics

Best Surf Season (November - April)

The dry season delivers the most reliable combination of offshore winds and rideable swell to Playa Nosara. Steady Northeast trades (NNE-ENE) dominate during these months, blowing cleanly across the swell window and grooming the waves for up to 60% of the time in December and November. Swell is generated by North Pacific storms and frontal systems, delivering consistent 1.0-1.5m waves with periods averaging 11-12s - punchy and fun-sized. While the swell direction is more varied (with some north and east components), the SSW-SW window still produces the best waves, especially when a storm track aligns to send a solid SW groundswell. This is prime time for Nosara's long lefts and playful rights.

Fair Surf Season (May - October)

The green season brings a shift in the swell machine as the Southern Hemisphere winter kicks in. From May through October, the predominant swell direction narrows to a focused SSW-SW band, with wave heights averaging 1.4-1.5m and periods lengthening to 13-14s - powerful, long-period groundswells that wrap into the bay with real authority. However, the wind picture becomes more complex. Lighter winds from variable directions (often SE-SSE cross-shore) reduce the frequency of truly clean conditions, though July stands out with the highest percentage of ideal offshore winds (64%). Early mornings often deliver glassy windows before the afternoon seabreezes kick in, and those who pick their days are rewarded with some of the year's most memorable surf.

Low Surf Season (Transitional Months)

February, March, and September experience the lowest percentages of ideal wind (34-40%) and a weaker mix of swell directions. In late winter, the trades can blow too strong (20-30+ kph) overwhelming the 1.3m swell and creating bumpy, chopped conditions. September, meanwhile, suffers from the highest incidence of onshore south-westerly winds as the Intertropical Convergence Zone sits overhead, often pairing decent SSW long-period swell with bumpy, wind-affected surf. These months require patience and a close eye on the charts to find the narrow windows where the stars align.

September: Swell Max, Wind Challenge

September sees the highest percentage of SW swell (28.8%) and a combined 95.5% from SSW-SW, with average height 1.5m and period 13.1s. The 1.5-2m range peaks at 23.7% (SSW) and 13.3% (SW), giving plenty of power. However, ideal wind drops to 38% - the second lowest of the year - as onshore SW and W winds increase (16.2% combined 10-20 kph). This creates a constant battle between excellent long-period groundswell and bumpy conditions. The key is to search for days when a ridge of high pressure deflects the onshore flow, allowing the offshore NE breeze to clean things up.