Conditions at Bico in April
April: Spring Fade or Surprise Window
April marks the transition from winter grunt to spring lull. Average swell height drops to 1.5m (around 5ft), and average period shortens to 11.1s. The swell still comes primarily from the WNW (37%) and NW (31%), but the percentage of bigger sets (over 2m) decreases markedly. You'll find more fun-sized, rippable waves in the 1-1.5m (3-5ft) range rather than machine-like overhead walls.
The wind becomes trickier. Ideal offshore conditions drop to just 19%, while the NNW wind (26%) and NW wind (13%) gain strength - a sign of the coming 'nortada'. Air temperatures average 15.1°C, water is 15.6°C, and rain stays moderate at 1.78 mm/day. Early spring can still produce clean, glassy mornings if high pressure anchors over the continent, but by midday, the onshore flow often wins. Choose your windows wisely.
Average Spot conditions at Bico in April
Swell history for April
Wind history for April
Swell quality
Analyze the groundswell consistency at Bico 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 Bico for your next trip in April.
Ground swell
Ground swell by size
Wind conditions
Evaluate the wind and swell alignment at Bico 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 Bico.