Yes beaches are much open for viewing, gazing and feeling the best cool monsoon air of Gokarna. Based on the monsoon water sports might be organised or not organised. Rains are quite heavy in Gokarna, so it is better to check before you travel and also check that days water activities if they are open or not.
Hi the beaches will be open, however it is advisable that you leave till 6.30 pm as it gets darker post that hour.Beaches are often patrolled so you would come to know when they are closed.The kudle beach is one of most visited one because of its unmatched beauty. Other watersport activities can be explored.