Conditions at Il Castello in April
April: The S/SSW Windswell Season
April is the month when S/SSE windswell takes over completely. S is the dominant swell direction at 16.0%, with SSE close behind at 14.8%, while WSW and SW still provide 14.2% and 13.3% respectively. The average swell height drops to 0.7m (2.3ft) and the period is 5.0s, so most waves are soft and small. The wind pattern is noticeably less favorable: ideal wind is down to 17%, and the onshore S through WSW quadrant now accounts for 24.8% of all wind observations. The good news is that the sea breeze has not fully locked in yet, so mornings with a NNE outflow can still produce clean, if small, 2-3ft waves. Water temperature rises to 15.7°C (60.3°F), air temperatures average 14.1°C and precipitation is 2.0mm/day. Not a month to plan a trip around, but a grovelable south windswell keeps the longboarders busy.
Average Spot conditions at Il Castello in April
Swell history for April
Wind history for April
Swell quality
Analyze the groundswell consistency at Il Castello 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 Il Castello for your next trip in April.
Ground swell
Ground swell by size
Wind conditions
Evaluate the wind and swell alignment at Il Castello 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 Il Castello.