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Conditions at Playa Ostional in May
May: Peak Southern Hemi Power
May stacks favourably for big lines. Average height pushes to 1.4m (4-5ft) and the average period peaks at 14.2s, the longest of the year. The swell is extraordinarily directional: SSW accounts for 81.4% and SW 13.8%, leaving almost nothing outside the favourable quadrant. A healthy slab of that south swell is 1.5-2m (5-6.5ft), with a touch reaching 2-2.5m (6.5-8ft). The wildcard is wind: the trades have lost their grip, winds are lighter and more variable, and the S/SSW component grows, so ideal wind drops to 43%. Rain ramps up to 6.06mm/day, air temp averages 28.2°C and water temp rises to 29.5°C. May delivers proper southern-hemi pumping surf, but the window of clean, glassy conditions becomes tighter.
Average Spot conditions at Playa Ostional in May
Swell history for May
Wind history for May
Swell quality
Analyze the groundswell consistency at Playa Ostional during May. Based on historical data, there is a % probability of groundswell occurring this month. The chart below provides a detailed breakdown of the average wave height distribution, offering deep insights into the swell quality and surf potential you can expect at Playa Ostional for your next trip in May.
Ground swell
Ground swell by size
Wind conditions
Evaluate the wind and swell alignment at Playa Ostional for May. Our analysis shows that favorable offshore or side-shore winds coincide with surfable swell approximately % of the time. The accompanying graph illustrates the average size distribution of waves during these optimal wind windows at Playa Ostional.