Lances Left (Bosua Coast)

Lances Left is a world-class, highly consistent left-hand reef/point break on the southern tip of Sipora Island in the Mentawai region. It’s known for long, fast rippable walls that can create thick-lipped and occasional barrel sections, delivering world-class wave quality when conditions connect. Surf performance is best around mid tide. The wave starts working at roughly 1.0–1.5 m and can hold up to 4 m+ (with very big swells becoming heavy/ledgey and, at times, deceptively difficult to ride cleanly). Typical ride lengths are often reported in the 50–150 m range, with longer connected rides possible (up to around a quarter-mile/approximately 200 m). Wind matters: clean offshore conditions are associated with east to northeast/offshore flow, while winds from west or south can add chop. Seasonally, it’s most dependable from April to October, with the primary swell window often emphasized as May through September, though the spot is described as very consistent with many rideable days across the year. Safety is a major focus. The break is over sharp coral/reef with sea urchins, and conditions can become particularly dangerous near dead low tide due to shallow reef. Key local advice includes avoiding the inside when it’s big and watching for the reef “keyhole” when paddling in and out; booties are strongly recommended for entry/exit. Lineups can be quiet on weekdays but may get busier during peak swell months.