The best months to visit American Samoa are August and July. See monthly temperatures, rainfall and rain days (1991–2020 averages) to plan your trip.
Average daytime high and monthly rainfall in American Samoa: January 29°C / 359mm; February 29°C / 311mm; March 29°C / 261mm; April 30°C / 219mm; May 29°C / 192mm; June 28°C / 117mm; July 28°C / 108mm; August 27°C / 95mm; September 27°C / 120mm; October 28°C / 196mm; November 28°C / 236mm; December 29°C / 319mm.