google it mate!
Dry season (March-October) is the main surf producer, when generous Indian Ocean swells can sometimes reach 12-15ft (4-5m) in June-August from a SSW- WSW direction. The main trend is the SE trades, which blow-out many exposed spots, especially from June-Sept. Unlike Bali, the trades don't blow consistently during the day, instead there are on and off windy periods. Obviously, trades gets stronger as the day progress, but sometimes thunderstorms can change wind patterns, so early and late glass-offs are common.
magicseaweed.com/Indonesia-Surf-Chart/44/
Go there surfing but don't count on wind. Like the rest of the tropics.
Been there later in the season when it suppose to be more wind and did not get anything.. Got reports that suppose to be windy but ion 2 separate trips we were not able to score!
April for sure is No wind as Easterly not started yet..
May maybe!
If you find let me know.
Bye Jankie