Santa Catarina seasonal overview
Best Surf Season (May - September)
The late spring through early autumn months deliver the highest consistency of surfable conditions at Santa Catarina. During this window, the North Atlantic's storm track shifts northward, allowing the Azores High to dominate, which funnels moderate groundswell from the north and northeast—the optimal swell directions for this north-east facing beach. While average wave heights dip to the fun-sized 1.3-1.9m range, the accompanying wave periods (9-10s) retain enough punch for rippable walls. More importantly, the frequency of offshore winds from the south to west climbs to 20-27% of the time, often delivering glassy conditions with sunny skies. The dominant northwesterly windswell still mixes in, but the increased proportion of pure N to E swell makes for cleaner, more organized lines.
Fair Surf Season (April & October)
April and October act as transitional bridges. In April, the ocean is still stirring from winter, with average swell heights around 2.4m and periods near 11s—plenty of power, but the swell direction is increasingly shifting toward the favorable northern quadrants (N to ENE account for nearly 21% of total). Offshore wind odds sit at 13%, meaning a decent chance for morning glass-offs before the sea breeze kicks in. October sees the opposite transition: the first autumn storms start firing low-pressure systems across the Atlantic, pushing average swell back up to 2.5m with 11s periods. The proportion of optimal swell direction decreases compared to summer, but the raw energy is there. When the wind aligns from the south, the result is long-period, heavy surf with manageable crowds.
Low Surf Season (November - March)
From November through March, the North Atlantic roars at full force. Average swell heights skyrocket to 2.8-3.1m and periods hover around 12s, meaning powerful, heavyweight waves are the norm. However, this energy arrives predominantly from the northwest and west-northwest—directions that cross the beach's northeast exposure, producing jumbled, often closeout conditions. The ideal offshore wind from the south to west occurs only 11-14% of the time, while cold fronts sweep through with strong onshore northerlies. This is the season for the experienced charger willing to battle shifting winds and inconsistent window of clean surf, but for most surfers, the quality-to- effort ratio is low.
Loading chart...
Conditions at Santa Catarina in April
April: Spring Sweet Spot for Quality
April marks a notable improvement in surf quality. Average height drops to 2.4m, still solid, and period shortens to 10.8s—still punchy. The critical change: N to ENE swell now accounts for over 20% of total, the highest percentage since the previous spring. This is due to the Azores High beginning to nudge storm tracks north, allowing more north-northeast groundswell to filter in. While the NW quadrant still contributes heavily (NNW 16%, NW 9.9%), the added NE component creates a more open, lined-up wave. Wind conditions improve: ideal offshore winds from S to W occur 13% of the time, and the north winds (N, NNE, NE) that ruin the surface come in at a combined 19% but are often lighter. On average, expect fun, rippable waves with occasional pumping sets. Morning offshore breezes are common.
Average Spot conditions at Santa Catarina in April
Swell history for April
Wind history for April
Swell quality
Analyze the groundswell consistency at Santa Catarina during April. 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 Santa Catarina for your next trip in April.
Ground swell
Ground swell by size
Wind conditions
Evaluate the wind and swell alignment at Santa Catarina for April. 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 Santa Catarina.
