- Home
- ...North America
Costa Rica- Isla Uvita
Conditions at Isla Uvita in September
September: The Deepest Lull of the Wet Season
September is statistically the smallest month of the year. Average swell height sinks to 2.6ft (0.8m), average period to 7.5s, and while ENE still makes up 79% of the directional spread and NE another 20%, the wave heights are mostly in the 2-3ft (0.5-1m) zone. Around 19% of the swell observations are under 1.6ft (0.5m), so micro conditions are common. Surf quality is marginal, soft, and easily bumpy.
Ideal wind is 34%, but the wet season peaks with precipitation at 7.68 mm/day, air temps around 24.6°C, and water temps at 29.2°C. The saving grace in September is tropical cyclone potential: a storm tracking through the western Caribbean can send long-period energy toward Isla Uvita, though usually with difficult winds. Otherwise, bring a log and keep expectations in check.
Average Spot conditions at Isla Uvita in September
Swell history for September
Wind history for September
Swell quality
Analyze the groundswell consistency at Isla Uvita 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 Isla Uvita for your next trip in September.
Ground swell
Ground swell by size
Wind conditions
Evaluate the wind and swell alignment at Isla Uvita 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 Isla Uvita.