Castelhanos is a scenic surf spot located on the east coast of Ilhabela, accessible by a ferry. If the conditions are dry, you can take a dirt road to reach this beach. It's a great place to escape the crowds, especially during the weekdays, although weekends tend to attract a light crowd due to its popularity.

The waves here generally work best with an east swell and can handle swell sizes starting from 2ft (about 0.6 meters). The spot breaks over sand, creating beach waves that can go left and right. It's suitable for surfers of different skill levels since it has some sections that beginners can handle, although it's best to be cautious as the waves can get pretty powerful. You can expect long-walled tube sections among some closeouts, making for interesting rides.

For surfers looking to camp, you can set up right in front of the break for a good experience. When it comes to wind, a western breeze is preferred, and any tide level—low, mid, or high—can work here, giving the spot some versatility throughout the day.