American Samoa is in the South Pacific Ocean, between the Equator and the Tropic of Capricorn. A tropical climate prevails.
Rain showers are frequent.
Rain showers may last only for a few minutes, or last all day. The average annual rainfall in the drier portions of the island is 125 inches and 200 inches elsewhere. Check the current weather at Pago Pago Airport. If you plan to hike in the park's interior, wear sturdy boots. Bring your own snorkel equipment, especially when visiting Ofu island.