American Samoa has a tropical maritime climate with abundant rain and warm, humid days and nights. Total rainfall in 2003 was 131.7 inches vs. 95.8 inches in 2004. The average year-round temperature was 82.4 degrees Fahrenheit in 2003 and 82.0 degrees Fahrenheit in 2004. Temperatures in the last five years have been in the 82 – 83 Fahrenheit range. As far as Extreme temperatures 2003 was a lot warmer than 2004, a high 90 low 74 (2003) compared to a high 81 low 68 (2004).

Average number of consecutive days with thunderstorms had been recorded to be almost 2 days in 2004, with the most active month being December with extreme weather conditions. There were twice as many thunderstorm days in 2003 compared to 2004, with extremely irregular weather conditions occurred mostly in the month of January.

Usually, the dry months were June through September and the wet months were November through May.  Less rainfall was recorded in 2004 especially during the months of April to December. More rainfall on average was recorded for the three month period from January to March compared to the average recorded from April to December. In 2003, less rainfall was recorded from June to October and more seasonal rainfall was recorded in different months and varied widely through out the year. Typically, heavy rain and showers, even long rainy period can occur frequently in any month.

Tables