The climate in American Samoa
Average daytime and nighttime temperaturesAll climatic diagrams of this site are taken from the collected data from the official weather station of American Samoa at an altitude of 5m above sea level. All data correspond to the average monthly values of the last 20 years.
Back to overview: American Samoa
Climate zone: tropics
High humidity and hot temperatures make the weather in American Samoa at times pleasant but also tropical humid. It is yearlong warm or hot. Dued to the lesser rain the best time for traveling is from June to August. Most precipitation decrease in January.
High humidity and hot temperatures make the weather in American Samoa at times pleasant but also tropical humid. It is yearlong warm or hot. Dued to the lesser rain the best time for traveling is from June to August. Most precipitation decrease in January.
› Duration of daylight and sunshine in American Samoa
› Compare climate with other regions or countries
› Compare climate with other regions or countries
Hours of sunshine per day

Rainy days per month

Precipitation in mm/day

Relative humidity in %

Absolute humidity in g/m³

Climate charts for other country parts in American Samoa
Long-term development of temperatures from 1999 - 2021
In contrast to single record values, a long-term development cannot simply be brought about by all weather stations in the country. Both the number and the locations are constantly changing. A simply calculated average value would give a falsified result. If several measuring stations in particularly cold mountain or coastal regions are added in one year, the average would already decrease as a result of this alone. If a station fails during the summer or winter months, it does not provide any values and falsifies the average again. The subsequent long-term development was therefore reduced to only 1 measuring points in order to have actually comparable data over as long a period as possible.In the years 1999 to 2021 there were only these 1 weather stations in the whole country, which reported continuous temperature values (Pago Pago). From these weather reports we have created a long-term development that shows the monthly average temperatures. The hottest month in this entire period was February 2002 with 29.8 °C. August 2015 was the coldest month with an average temperature of 26.2 °C.
The average annual temperature was about 28.2 °C in the years after 1999 and about 27.9 °C in the last years before 2021. So it has dropped by about 0.3 °C. This trend only applies to the selected 1 weather stations in American Samoa. A considerably more comprehensive evaluation of the global warming has been provided separately.

Data basis: German Weather Service, individual values averaged and supplemented by own elements.