Playa Guiones - surf spot statistics

Best Surf Season (June - November)

The heart of the wet season unleashes Playa Guiones' true potential. From June through August and again in November, the southern hemisphere's long-period SSW groundswells roll in with authority, averaging 1.5m at 13-14 seconds. Surprisingly, the percentage of offshore NNE to ENE winds remains highest during these months – peaking at 68% in July – keeping the infamous Costa Rican onshore flow at bay. This is when the wave quality is at its most consistent and powerful, offering rippable walls and clean barrels for those who time the tides right.

Fair Surf Season (April - May & December)

The transitional edges of the wet season and the holiday month of December bring a mixed bag. April and May see the swell size and period start to climb (often 1.3-1.4m at 14s) as the Intertropical Convergence Zone stirs up storm activity in the South Pacific, but the offshore wind windows narrow to 48-52%. December offers a solid trade wind regime (60% offshore) but the swell loses punch, averaging 1.3m at 11.7s with more northerly components sneaking in. Waves are still fun, especially for longer boards, but require more patience to find the best sets.

Low Surf Season (January - March)

The early dry season delivers the most consistent offshore winds from the northeast, but at the cost of swell quality. Average heights sit at a mere 1.3m with periods dipping to 11.5-12.3s – fine for groveling but lacking the power and push of the wet season. While the wind is clean (40-43% ideal), the swell direction is a hodgepodge of northern hemi leftovers and weak southerly pulses. For those chasing long, clean lines on a longboard, there are still fun waves to be had, but the true firing conditions are on hold until the southern ocean wakes up.

September: Big Swell, Tricky Winds

September offers the same average height and period as August (1.5m, 13.1s), but the wind picture is more challenging. Ideal offshore wind plummets to 40% – the lowest since March. The wind rose shows a near-even split between all quadrants, with onshore S and SSW winds (8.7% and 8.5%) competing with offshore NE breezes (4.1%). The swell themselves are still excellent: SSW at 66.7% and SW at 28.8%, with the 1.5-2.5m categories well represented. This month rewards patience – early mornings often glass off before the onshore flow picks up, and the long-period energy (13.1s) means waves hold shape even in imperfect wind. September is for the dedicated surfer willing to work for the pumping sets.