Surf forecastStatisticsHistorical report

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 September

September: Lingering Summer

September maintains the summer fullness. Average swell height stays at 0.5m, period 10.7s, and SSW swell 98.8%. The proportion of 0.5-1m waves reaches 37.2%—the highest of any month. Winds shift slightly: NW (20.3%), NNW (9.2%), and WNW (13.1%) still blow offshore, but there is an increase in southerly components (S and SSE) that can create onshore conditions at times. The ideal percentage drops to 15%, still solid. The surf is consistently fun, with waist-high waves on most days, and the morning offshore window is reliable. This is a great month to avoid the heavier trade winds that return later in autumn.

Average Spot conditions at Panama Viejo in September

Swell history for September

0 - 0.5
0.5 - 1
1 - 1.5
1.5 - 2.0
2.0 - 2.5
> 2.5 m

Wind history for September

0 - 10
10 - 20
20 - 30
30 - 40
40 - 50
> 50 km/h

Swell quality

Analyze the groundswell consistency at Panama Viejo during September. 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 September.

Ground swell

Ground swell by size

Wind conditions

Evaluate the wind and swell alignment at Panama Viejo for September. 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.

Swell with good wind

Swell with good wind by size