Panama Viejo seasonal overview
Best Surf Season (May - November)
As the Pacific intertropical convergence zone relaxes, Panama Viejo settles into its most consistent window. Average swell heights creep up to 0.5m during these months, and while that's hardly pumping, the wave quality peaks thanks to lighter offshore winds from the north-northwest. The S to SSW groundswell trains, often sporting 9-12 second intervals, deliver fun-sized runners that wrap into the southeast-facing bay. This is the time for groveling on high-volume boards, with the occasional punchy set sneaking through. Expect the highest percentage of clean, rideable waves from May through November, especially when the morning glass-off aligns with a fresh S pulse.
Fair Surf Season (April & December)
April and December act as transitional bookends. Swell heights dip slightly to 0.4m on average, and the wind regime weakens in April but ramps back up in December. Offshore flow remains common from the N-NW quadrant, but the waves are often too small to break properly, especially during mid-day onshores. Still, the long-period leftovers from winter storm tracks can surprise—if you're willing to paddle hard for a waist-high gem. These months demand patience and a quiver of floaters.
Low Surf Season (January - March)
The height of the dry season brings the smallest waves of the year. Average swell height bottoms out at 0.3m, while the trades strengthen, often exceeding 20 kph from the north. The result is a bumpy, blown-out micro surface, even though the wind direction is technically offshore. Long-period SSW groundswell (11-13s) rolls past the point but lacks the oomph to break cleanly. Only 0-1% of the time do you get truly ideal conditions. Leave the shortboards at home; this is strictly a longboard or skimboard affair.
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Conditions at Panama Viejo in May
May: The Season Turns On
May delivers a significant jump in quality. Average swell height reaches 0.5m, and the period remains healthy at 12.9s. Nearly all swell (97.8%) comes from the SSW, with a noticeable increase in 0.5-1m waves—26% of the time. This means fun-sized, rideable surf becomes a regular occurrence. The wind pattern softens considerably: N (7.7%), NNW (16.4%), and NW (26.6%) now blow predominantly at 0-10 kph, providing clean, offshore texture. The ideal conditions percentage jumps to 12%. This is the month when the spot starts to shine for high-volume shortboards and logs. Morning sessions with light offshore winds and waist-high+ sets are not uncommon.
Average Spot conditions at Panama Viejo in May
Swell history for May
Wind history for May
Swell quality
Analyze the groundswell consistency at Panama Viejo 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 Panama Viejo for your next trip in May.
Ground swell
Ground swell by size
Wind conditions
Evaluate the wind and swell alignment at Panama Viejo 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 Panama Viejo.
