Lineup Guide
Easterly wind keeps the face cleaner, SW swell is the trigger, and the reef wants a careful mid-tide read before the sections get too sharp.
Surf GuideSumba
Marosi
Marosi is West Sumba's deep-reef right-hander, a marquee Sumba wave that turns a raw coast into a serious barrel and wall session when the southwest pulse is big enough. Get the latest surfing conditions, forecast, and tide details for Marosi in Sumba.
Break TypeReef Break
Skill LevelIntermediate - Advanced
LocationSumba, ID
Live updates
Spot Guide
Lineup Insights
Deep Dive
Get the full picture in WaveWise.
Stop guessing and start surfing. WaveWise analyzes live data to find your best upcoming sessions so you spend less time planning and more time paddling out.
Hourly swells, wind & weather
Live tide windows & daylight
Session Finder ranking
Explore