Park climate1991–2020 climate normals3 m source elevationNASA POWER

Long-term climatology profiles featuring temperature, precipitation, wind, and daylight statistics.

National Park of American Samoa Climate: Comprehensive Monthly Averages and Atmospheric Patterns

Name: National Park of American Samoa monthly climate normals
Creator: NASA POWER

Analyze the twelve-month climate profile of the National Park of American Samoa using long-term data from 1991 to 2020. These measurements reflect climatological averages at a single representative coordinate, providing a precise look at annual temperature, precipitation rates, relative humidity, wind speeds, and daylight duration throughout the year.

View park overview Browse climate zones

Annual climate pattern

Comparing highly consistent annual temperatures with fluctuating average daily rainfall rates

National Park of American Samoa Monthly Temperature and Precipitation Patterns

Average monthly mean temperatures at the National Park of American Samoa remain exceptionally stable, fluctuating by less than two degrees Celsius across the year. Average daily precipitation rates show a distinct curve, shifting from over eight millimeters in January to roughly two millimeters in August based on long-term data at a representative elevation.

Mean temperatureAverage minimum–maximum rangePrecipitation

Annual mean: 27.6 °C
Warmest month: April
Coolest month: August
Wettest month: January

Twelve-month climate

Analyze long term average temperatures, daily precipitation rates, relative humidity, and wind speed

National Park of American Samoa Weather by Month and Monthly Climate Normals

Analyzing the calendar year for National Park of American Samoa using historical normals from 1991 through 2020 reveals variations in average temperature bounds and daily precipitation rates at a representative elevation of 2.66 meters. Comparing each monthly record allows for the systematic tracking of relative humidity, wind speed, and calculated average daylight hours.

	Mean temperature	Precipitation	Humidity	Wind speed	Daylight
January	28 °C26.5° to 29.2°	8.8 mm/day	81.4%	5 m/s	12.7 hours
February	28.1 °C26.7° to 29.2°	8.5 mm/day	81.1%	5.1 m/s	12.5 hours
March	28.1 °C26.8° to 29.3°	6.7 mm/day	80.9%	4.5 m/s	12.1 hours
April	28.2 °C26.9° to 29.3°	6.1 mm/day	80.4%	4.8 m/s	11.7 hours
May	27.8 °C26.5° to 29°	4.4 mm/day	79.7%	5.6 m/s	11.3 hours
June	27.4 °C26.1° to 28.6°	2.8 mm/day	79.5%	6.7 m/s	11.2 hours
July	26.9 °C25.4° to 28.1°	2.3 mm/day	79.5%	6.7 m/s	11.3 hours
August	26.7 °C25.3° to 28°	2.1 mm/day	79.3%	6.6 m/s	11.5 hours
September	27 °C25.6° to 28.1°	3.1 mm/day	79.7%	6.7 m/s	11.9 hours
October	27.2 °C25.9° to 28.4°	4.9 mm/day	80.5%	6 m/s	12.3 hours
November	27.6 °C26.1° to 28.8°	7.4 mm/day	81.1%	5.3 m/s	12.7 hours
December	27.9 °C26.3° to 29.1°	7.6 mm/day	80.9%	5.1 m/s	12.8 hours

Calculated climate highlights

Comparing long term averages for temperature, precipitation, wind, and daylight across the year

National Park of American Samoa Monthly Climate Highlights and Calculated Contrasts

Comparing the twelve monthly climatological averages for the National Park of American Samoa reveals calculated annual maximums and minimums for key atmospheric measurements. Derived from a representative coastal coordinate, the calculated warmest, coolest, wettest, and driest monthly cycles help trace seasonal variations without indicating extreme daily weather events.

Warmest month: April28.2 °C
Coolest month: August26.7 °C
Wettest month: January8.8 mm/day
Driest month: August2.1 mm/day
Most humid month: January81.4%
Windiest month: September6.7 m/s
Longest daylight: December12.8 hours

Interactive climate map

Compare National Park Climate Data Through an Interactive Global Map

Visit the MoriAtlas climate map to compare long-term monthly temperature and precipitation metrics across national parks. This visual interface helps you understand seasonal variations at specific protected area coordinates to deepen your knowledge of global park geography and environmental characteristics.

Global National Park Climate Map

Other park climates

Analyze monthly temperature and precipitation trends across diverse global preserves

Compare Climate Profiles of National Park of American Samoa and Other Protected Areas

Comparing climate profiles for other protected areas in the United States and worldwide offers a direct way to contrast regional atmospheric differences with National Park of American Samoa. Evaluating long-term temperature patterns, precipitation rhythms, wind, humidity, and daylight variations reveals the environmental forces shaping each distinct landscape.