Climate thumb|right|250px|At , Rainmaker Mountain gives the city the highest annual rainfall of any harbor in the world. Pago Pago has a tropical rainforest climate (Köppen climate classification Af) with hot temperatures and abundant year-round rainfall. All official climate records for American Samoa are kept at Pago Pago. The hottest temperature ever recorded was on February 22, 1958. Conversely, the lowest temperature on record was on October 10, 1964. The average annual temperature recorded at the weather station at Pago Pago International Airport is , with a temperature range of about two degrees Fahrenheit separating the average monthly temperatures of the coolest and hottest months.
Climate thumb|right|250px|At , Rainmaker Mountain gives the city the highest annual rainfall of any harbor in the world. Pago Pago has a tropical rainforest climate (Köppen climate classification Af) with hot temperatures and abundant year-round rainfall All official climate records for American Samoa are kept at Pago Pago. The hottest temperature ever recorded was on February 22, 1958. Conversely, the lowest temperature on record was on October 10, 1964. The average annual temperature recorded at the weather station at Pago Pago International Airport is , with a temperature range of about two degrees Fahrenheit separating the average monthly temperatures of the coolest and hottest months.