Lamno is a shifting sandy rivermouth beachbreak with predominantly right-breaking waves and occasional fun corners. It generally works from 0.3-1.8 m, with a broader listed range of 0.3-2.4 m. S-W swells and NE offshore winds provide the most favorable conditions, while the break remains surfable across tides. A nearby breakwall has altered the rivermouth and bars, so the best peak position and wave quality vary. Smaller, manageable days suit beginners and intermediates who are comfortable around rivermouth currents.

A breakwall-shifted rivermouth where Sumatra’s right peaks keep moving around.