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Park climate1991–2020 climate normals0 m source elevationNASA POWER

Twelve month analysis of temperature, precipitation, wind, and daylight averages from 1991 to 2020

Annual Climate Normals for Rose Atoll Marine National Monument: Monthly Meteorological Data

Data provided for Rose Atoll Marine National Monument represents long-term climate normals based on a single representative coordinate measured between 1991 and 2020. Monthly patterns trace shifts in average temperature, daily precipitation rates, relative humidity, wind speed, and daylight hours. These values clarify the atmospheric conditions typical of the monument throughout the calendar year without representing current weather or site-wide variability.

Annual climate pattern

Long-term monthly averages for minimum, mean, and maximum temperatures alongside daily precipitation rates

Rose Atoll Marine National Monument Annual Climate Normals and Monthly Temperature Patterns

Temperature data across the twelve monthly periods shows consistent average minimums and maximums at the sampled coordinate within Rose Atoll Marine National Monument. Average daily precipitation rates accompany these monthly temperature normals from NASA POWER records spanning 1991 to 2020.
Mean temperatureAverage minimum–maximum rangePrecipitation
Temperature (°C)PrecipitationUp to 8.3 mm/day20°25°30°28°28°28°28°28°27°27°27°27°27°27°28°01234567898.37.95.95.34.52.52.41.834.46.57.3JanFebMarAprMayJunJulAugSepOctNovDec
Annual mean
27.4 °C
Warmest month
April
Coolest month
August
Wettest month
January
Twelve-month climate

Compare average temperature bounds, daily precipitation rates, humidity, wind speed, and calculated daylight across the calendar year.

Rose Atoll Marine National Monument Climate Data by Month across Twelve Records

Examine long-term monthly temperature, average daily precipitation, and atmospheric moisture patterns derived from baseline climatology records at a representative coordinate. Reviewing twelve complete monthly normals provides clear insight into seasonal temperature ranges, wind speeds, and calculated daylight hours without relying on simple annual averages.
Mean temperaturePrecipitationHumidityWind speedDaylight
January27.8 °C26.1° to 29.1°8.3 mm/day81.9%5.3 m/s12.8 hours
February27.9 °C26.4° to 29.1°7.9 mm/day81.7%5.4 m/s12.5 hours
March28 °C26.6° to 29.2°5.9 mm/day81.5%4.9 m/s12.1 hours
April28 °C26.7° to 29.2°5.3 mm/day80.8%5.1 m/s11.7 hours
May27.7 °C26.2° to 28.9°4.5 mm/day79.8%5.9 m/s11.3 hours
June27.3 °C25.8° to 28.4°2.5 mm/day79.3%6.9 m/s11.1 hours
July26.7 °C25.2° to 27.9°2.4 mm/day79.6%6.9 m/s11.2 hours
August26.5 °C25° to 27.7°1.8 mm/day79.5%6.7 m/s11.5 hours
September26.7 °C25.2° to 27.8°3 mm/day79.9%6.9 m/s11.9 hours
October27 °C25.6° to 28.1°4.4 mm/day80.8%6.3 m/s12.4 hours
November27.4 °C25.8° to 28.6°6.5 mm/day81.5%5.6 m/s12.7 hours
December27.7 °C26.2° to 29°7.3 mm/day81.1%5.5 m/s12.9 hours
Calculated climate highlights

Comparing long term monthly averages for temperature, precipitation, wind, humidity, and daylight duration.

Calculated Monthly Climate Contrasts and Normals at Rose Atoll Marine National Monument

Stored climatology records provide comparative monthly benchmarks for temperature, precipitation, humidity, wind, and daylight across a representative coordinate of Rose Atoll Marine National Monument. Resulting values highlight the warmest, coolest, wettest, and driest periods without implying observed weather extremes or localized conditions.
Warmest month
April28 °C
Coolest month
August26.5 °C
Wettest month
January8.3 mm/day
Driest month
August1.8 mm/day
Most humid month
January81.9%
Windiest month
July6.9 m/s
Longest daylight
December12.9 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, precipitation, and regional atmospheric patterns across diverse protected landscapes

Comparing Rose Atoll Marine National Monument Climate Profiles With Other Protected Areas

Examine long-term monthly climate normals to evaluate temperature ranges, precipitation rhythms, and atmospheric shifts across different protected natural areas. Standardized baseline records across diverse geographic settings highlight how varied protected landscapes experience distinct annual weather cycles.
MoriAtlas Explorer

Continue Exploring Rose Atoll Marine National Monument's Protected Landscape and Map Context

Deepen your understanding of Rose Atoll Marine National Monument by examining its precise protected boundaries and its place within the geography of American Samoa. This route provides structured data for appreciating the monument's marine protected area status and its mapped natural context. Continue your atlas exploration to grasp the full geographic significance of this protected landscape.