Map
Mejillones
Today's Surf Conditions at Mejillones
Spot Conditions Map
Hover over the hourly chart columns to update the wind & swell direction overlays on the map.
Today's Surf & Wind Forecast (Hourly)
Loading forecast text...
Spot Overview & Description
Mejillones is the kind of reef that commands respect and delivers reward in equal measure—a deep-water outer reef that acts as a relentless swell magnet, hoisting groundswells from the deep Pacific long before they reach the shore. With ample water covering a jagged, uneven reef structure, the wave jacks up with authority, offering a variety of take-off zones that spread the crowd and open up options. Expect waves that race both left and right, with the reef's topography shaping smooth, powerful walls and the occasional stand-up barrel when conditions align. The raw, exposed setting means it handles solid size, but the uneven bottom demands sharp reflexes and a cautious line through the inside sections. Best approached on a mid-to-high tide to fend off the shallow spots, with a keen eye on clean, long-period westerly swells and an offshore hand from the east to keep the faces glassy. This is a spot for experienced surfers seeking a true, unscripted reef experience—raw, dynamic, and utterly captivating.
Best Surf Season & Climatology
Best Surf Season (October - March)
The North Atlantic roars to life during these months, delivering a consistent barrage of powerful, long-period swell to Mejillones' north-northwest facing beach. With average wave heights hovering between 1.7m and 2.2m and periods often exceeding 11 seconds, the potential for pumping and firing conditions is at its peak. The ideal offshore wind (S to SW) blows with moderate frequency, especially in December (23% ideal) and January (19%), creating clean, glassy faces when the synoptic setup aligns. This is undoubtedly the prime window for scoring the best waves of the year.
Fair Surf Season (April & September)
Transitional months like April and September offer a mix of fading winter swell and building autumn energy. Average heights drop to around 1.4-1.9m and periods shorten to 10-11 seconds, but quality windows still present themselves when a late-season low or early-season hurricane sends a clean NW swell. Ideal wind frequency drops to 5%, making these months more of a gamble. However, when conditions align, you can still find fun-sized waves with less crowd pressure.
Low Surf Season (May - August)
Summer brings a drastic reduction in surf potential. The North Atlantic storm track shifts north, producing negligible long-period groundswell. Average heights remain around 1.4-1.6m, but periods slump to 7.7-9.5s, resulting in predominantly choppy, messy wave conditions. Dominant winds shift to strong northerly quadrants (NNE, NE) that blow directly onshore, ruining any semblance of shape. Ideal offshore winds are nearly nonexistent (0-2% of the time). These months are best left for other activities unless a rare tropical system aligns perfectly – a true low surf season.
Detailed Surf Information for Mejillones
Detailed Surf Forecast
Access our detailed 8-day swell and wind forecast charts for Mejillones with tidal graphs, period ranges, and daily forecast text summaries.
Swell & Wind Statistics
Explore historical swell consistency, wave heights, and offshore wind windows month-by-month, compiled from over 40 years of data.
Historical Surf Report
Browse the historical database archives to view past wave reports and understand spot climatology during specific years and months.