Flagge von Costa Rica

Isla Uvita • Statistics for May

Conditions at Isla Uvita in May

May: Wet-Season Lull and Groveling Conditions

May is one of the slowest months of the year. ENE swell still supplies 84% and NE another 15%, but average wave heights fall to 3.0ft (0.9m) and the period sits at 7.6s. The bulk of observations are in the 2-3ft (0.5-1m) range, and a notable percentage falls below 1.6ft (0.5m), so micro and fun-sized waves are the norm. The few 3-5ft (1-1.5m) waves that show up are usually soft and wind-affected.

The ideal-wind percentage remains low at 29%, and precipitation jumps to 8.11 mm/day as the ITCZ moves overhead. Air temps average 25.1°C, water temps reach 29.0°C, and the wind rose is dominated by lighter onshore/cross-shore flow. This is the true low season; if you're surfing, make it a longboard and pick a ridable sandbar, because the North Atlantic is taking a break.

Average Spot conditions at Isla Uvita in May

Swell history for May

0 - 2
2 - 3
3 - 5
5 - 6
6 - 8
> 8 ft

Wind history for May

0 - 6.2
6.3 - 12.4
12.4 - 18.6
18.6 - 24.9
24.9 - 31.1
> 31.1 mph

Swell quality

Analyze the groundswell consistency at Isla Uvita 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 Isla Uvita for your next trip in May.

Ground swell

Ground swell by size

Wind conditions

Evaluate the wind and swell alignment at Isla Uvita 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 Isla Uvita.

Swell with good wind

Swell with good wind by size

Choose month for details