Conditions at Foz in April
April: Lighter Swells and a Rising Sea Breeze
April sees the winter machine winding down. Average swell heights drop to 1.3m (4.2ft) and periods shorten to 10.5s - no longer the long-period monsters of January but still offering rideable, punchy surf. The direction distribution is still heavily NW/NNW (32% and 29%) with another 10% WNW, so the swell window remains favorable. What changes is the wind. The offshore SSW/SW quadrant still totals around 35%, but the NE/ENE flow jumps to a combined 33%, and the percentage of ideal surf drops to 32%. This means you have to work for it: dawn patrol often delivers glassy lines before the onshore breeze builds. Air temperatures climb to 10.2°C, water temp is 13.5°C, and rain averages 2.9mm/day - a classic spring setup with improving light but fading consistency.
Average Spot conditions at Foz in April
Swell history for April
Wind history for April
Swell quality
Analyze the groundswell consistency at Foz 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 Foz for your next trip in April.
Ground swell
Ground swell by size
Wind conditions
Evaluate the wind and swell alignment at Foz 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 Foz.