The best time to go deep-sea fishing in Hikkaduwa is during November as soon as the major monsoons have ended. There are plenty of tours available so you can go out into the sea for a whole day or even half a day and the ship's captain and crew will facilitate everything for you. All you have to do is throw out your line and hope for a good catch or two. If you have any luck you should be able to catch skipjack tuna, sailfish, frigate tuna and various kinds of mackerel.