Sa'anapu is a lagoon spot on Samoa's southern coast facing west toward the open ocean. A river system feeds into the protected lagoon, creating a mix of brackish and saltwater conditions. The site features a sandy beach break fronting dense mangrove forests, with visible sediment discharge indicating freshwater influence. The lagoon provides some natural wind protection from the surrounding landscape, though this also limits wind acceleration. Conditions are generally small and sheltered, making this suitable for beginners seeking calm water practice. The river mouth creates directional current patterns that shift with tidal cycles. Best conditions occur with northerly winds approaching from the trade wind belt, providing side-shore flow parallel to the coast. The low wind reliability (21.8%) means sessions are inconsistent. Water temperatures remain warm year-round (27.7°C), and average wave heights are modest (1.74m). Kiters should be aware of shallow areas, river currents, and variable visibility due to sediment load. This spot works as a learning location during favorable wind windows rather than a reliable daily destination.