Costa Azul - surf spot statistics

Best Surf Season (April - July)

As the Northern Hemisphere spring sets in, Costa Azul hits its prime. The Pacific high tightens its grip, ushering in consistent offshore breezes from the west to northwest—perfect for grooming the predominant south swell that travels thousands of miles from the Southern Ocean. Average wave heights climb to a fun 1.0-1.2m, while periods hover in the powerful 13-14 second range, yielding punchy, well-shaped waves that reel down the beach. This is the sweet spot where swell size, wind quality, and water temps align for peak surfability.

Fair Surf Season (March, August - October)

The shoulder months still offer plenty of waves, but conditions become more variable. March sees a rise in long-period swell as the South Pacific gears up, but winds can be a tick more inconsistent. Late summer into early fall (Aug-Oct) holds onto solid south swell energy (1.1-1.2m averages) but the trade wind influence begins to creep in, decreasing the percentage of offshore wind days. You'll still score clean sessions, especially in August, but expect more mixed conditions with occasional onshore slop.

Low Surf Season (November - February)

Winter brings a shift in the swell window. While the Southern Hemisphere is still active, the dominant storm tracks weaken, and the average swell height drops to 0.8m. More importantly, the region becomes susceptible to northerly swell from mid-latitude fronts, which doesn't wrap as efficiently into the east-southeast facing beach. Wind patterns are less reliable, with the percentage of ideal offshore wind falling to 69-73%. The result: smaller, less consistent surf with a higher chance of onshore wind ruining the session. However, when a solid south swell sneaks in under a high-pressure ridge, the few days of fun-sized, groomed waves make it worthwhile.

May: Peak Size, Peak Wind, Peak Fun

May sees the average swell height reach 1.1m, tied for the highest of the year, and the period stays at a strong 14.1 seconds. The dominant swell direction is still SSW (72%) and S (27%), but now the 1-1.5m range dominates the SSW component with 41% of all swells – that's a lot of solid, rippable waves. The 1.5-2m range also jumps to 3% of the total, offering occasional bigger days. Wind quality peaks at 89% ideal, the highest of any month. The wind rose shows a well-defined westerly regime: WNW (28%), W (15%), NW (18%), with very little from the east or north. The consistency of these offshore winds is a result of the thermal low over the desert interior pulling a gentle onshore sea breeze? Actually no, it's a persistent ocean high keeping a light to moderate offshore flow. Expect clean, groomed surf almost every day, with chest to head-high sets becoming the norm. May is arguably the best month for quality combined with quantity.