Last updated: January 18, 2025
The Western District of American Samoa exhibits a unique Koppen-Geiger climate classification of Af, characterized by its consistently warm and humid conditions. With an average temperature hovering around 27°C (81°F), this region experiences a minimum of 24°C (76°F) in February and peaks at 30°C (86°F). The tropical atmosphere fosters a vibrant ecosystem, making the Western District not only a natural haven but also a focal point for climate enthusiasts and researchers alike.
In the Western District of American Samoa, temperature patterns throughout the year remain consistently warm, reflecting a stable tropical climate. The region experiences minimal fluctuations, with average monthly temperatures typically centered around 27°C (81°F). Notably, February marks the warmest period, presenting a peak maximum temperature of 30°C (86°F), while the coolest months average slightly lower, with nighttime lows primarily around 24°C (76°F) to 25°C (77°F). The summer months of July and August see the average dip to 26°C (80°F), yet maximum temperatures remain in the comfortable range of 28-29°C (83-85°F). Overall, the climate throughout the year exudes a balmy consistency, enriched by slight seasonal variations that embody the essence of a tropical paradise.
In February, the temperatures in Tafuna, Vailoatai, and Leone are consistently warm, with both the minimum and maximum temperatures ranging from 24°C (76°F) to 30°C (86°F). For detailed temperature patterns, visit monthly temperatures in Tafuna, monthly temperatures in Vailoatai, and monthly temperatures in Leone.
Precipitation in the Western District of American Samoa is characterized by significant variability across the months, with January and February being particularly notable for their high rainfall. January records 301 mm (11.8 in), while February peaks at 464 mm (18.3 in), indicating a period of intense rainfall that supports the lush tropical environment. Following this peak, the rainfall diminishes into the subsequent months, with March, April, and May receiving moderate amounts of 195 mm (7.7 in), 228 mm (9.0 in), and 210 mm (8.3 in), respectively. However, a noticeable decrease occurs during the heart of the dry season in July and August, where precipitation levels drop to 152 mm (6.0 in) and 128 mm (5.1 in).
Despite the overall decrease in rainfall during the mid-year months, the Western District experiences several wet days throughout the year, with January and February showcasing 23 and 25 days of rainfall, respectively. Conversely, the drier months of July and August average only 20 and 21 rainy days. This pattern indicates that while certain months may see less total precipitation, the number of wet days can still remain significant. Overall, the rainfall distribution contributes to the rich biodiversity of the region, even as the climate transitions between wet and dry phases.
In the Western District of American Samoa, sunshine duration exhibits a clear seasonal trend, particularly notable as the year progresses from winter to summer. January begins the year with 232 hours of sunlight, but as the dry months approach, the sunlight hours increase significantly. March stands out as a peak month, boasting 310 hours of bright sunshine, closely followed by October with 308 hours, indicating a pronounced shift toward sunnier conditions as the seasons transition. This pattern underscores the region’s tropical climate, allowing for extended periods of sunshine that coincide with more stable weather.
The pattern of sunshine hours continues to demonstrate a consistent rise, peaking in the spring and autumn, while the late summer months maintain a healthy average, as seen in August with 293 hours and September at 301 hours. In contrast, the winter months—January and February—see relatively lower sunshine hours compared to the later months, making March a significant harbinger of longer days ahead. This increasing trend punctuated by peak months not only contributes to the region's biodiversity but also enhances its appeal as a destination for sun-seeking tourists.
The UV Index in the Western District of American Samoa reveals a predominately extreme exposure risk throughout the year, highlighted by consistently high values in the early months. January and February both record a UV Index of 16, which factors into an extreme exposure category where individuals can expect to burn in as little as 10 minutes of unprotected sun exposure. March sees a slight decrease to 15, yet remains in the same extreme category. As the year unfolds, the UV Index gradually decreases; April boasts a 13, followed by 11 in May, marking the onset of the region's transition into the summer months.
In the height of summer, June and July maintain a 9 UV Index, categorized as very high, extending the burn time to 15 minutes. Notably, the trend reverses in August with an increase to 12, then back to extreme levels in September, October, November, and December, all clocking in at 14-15. This data indicates that while summer months boast a slightly lower UV Index, the extreme UV conditions return significantly by late spring and persist into winter. Consequently, residents and visitors alike need to exercise caution against UV exposure throughout the year, particularly during the peak months when protective measures are paramount.
UV Risk Categories
In the Western District of American Samoa, daylight duration exhibits a remarkable consistency throughout the year, with most months averaging around 12 hours of daylight. During the first half of the year, January, February, and March all maintain this steady pattern, providing ample sunlight for both residents and wildlife. This balance shifts slightly in April through August, where daylight reduces to 11 hours. Despite this decrease, the tropical environment flourishes under the warm, consistent light that defines the region's climate.
As the year progresses into September, daylight duration returns to 12 hours, a pattern that persists through October, November, and December. This cyclical return to a longer daylight period underscores the stability of the photoperiod in this equatorial region. Such consistent daylight hours allow for a rich variety of flora and fauna, while also supporting agricultural practices throughout the year. This unique characteristic of the Western District’s daylight duration plays a vital role in shaping the lifestyle and ecological dynamics of the area.
Aoloau, American Samoa, experiences a tropical climate characterized by consistently warm temperatures ranging from a minimum of 24°C (76°F) to a maximum of 30°C (86°F) throughout the year. Precipitation varies significantly, with February being the wettest month, receiving 464 mm (18.3 in), while August is the driest at 128 mm (5.1 in). Sunshine hours are relatively abundant, peaking in March with 310 hours, contributing to a pleasant environment. Despite heavy rainfall during some months, the overall climate remains warm and inviting. For more detailed information, visit Aoloau climate.
The climate in Faleniu, American Samoa, is characterized by warm temperatures throughout the year, with average monthly highs around 27–30°C (81–86°F) and lows ranging from 24–25°C (76–77°F). The region experiences its highest rainfall in February, with 464 mm (18.3 in), while August tends to be the driest month with only 128 mm (5.1 in). Sunshine hours vary seasonally, peaking in March with 310 hours, providing ample sunlight despite the wet conditions. For more detailed information, visit Faleniu climate.
Leone, American Samoa, experiences a tropical climate characterized by warm temperatures and significant rainfall throughout the year. Average temperatures range from 25°C (77°F) to 29°C (85°F), with minimal variation across the months. Precipitation peaks in February with 464 mm (18.3 in), while July sees the least at 152 mm (6.0 in). Despite high rainfall, Leone enjoys considerable sunshine, especially in March and October, with over 300 hours recorded. For more detailed information, visit Leone climate.
Malaeimi, American Samoa, enjoys a tropical climate characterized by warm temperatures year-round, with average highs generally around 27-30°C (81-86°F). The region experiences significant rainfall, particularly in February with 464 mm (18.3 in), while the driest month is August with only 128 mm (5.1 in). Sunshine hours vary throughout the year, peaking in March with 310 hours. Overall, Malaeimi's climate is marked by humidity and vibrant greenery, making it a unique tropical environment. For more details, visit Malaeimi climate.
The climate of Malaeloa/Aitulagi, American Samoa, features consistently warm temperatures throughout the year, with averages around 27°C (81°F) and maximums ranging from 28°C (83°F) to 30°C (86°F). The region experiences significant rainfall, peaking in February with 464 mm (18.3 in) and generally declining to around 128 mm (5.1 in) in August. Sunshine is abundant, especially in March and October, boasting over 300 hours of sunlight. This tropical climate presents a diverse environment marked by both high humidity and rich precipitation patterns. For further details, visit Malaeloa/Aitulagi climate.
Malaeloa/Ituau, American Samoa, exhibits a tropical climate characterized by relatively consistent temperatures throughout the year, ranging from a minimum of 24°C (76°F) to a maximum of 30°C (86°F). The region experiences heavy rainfall, particularly in February with 464 mm (18.3 in), while August is the driest month with only 128 mm (5.1 in). Despite the rainfall, sunshine is plentiful, peaking in March with 310 hours. Overall, Malaeloa/Ituau offers a warm and humid environment, ideal for those who enjoy a tropical lifestyle. For more details, visit Malaeloa/Ituau climate.
Mapusagafou, American Samoa, enjoys a tropical climate characterized by warm temperatures throughout the year. Average temperatures hover around 27°C (81°F), with minimal variation between monthly highs and lows, typically ranging from 24°C (76°F) to 30°C (86°F). Precipitation is significant, peaking in February with 464 mm (18.3 in), while drier months like August receive about 128 mm (5.1 in). Sunshine hours are plentiful, especially in March and October, with around 310 and 308 hours respectively. For more detailed climate information, visit Mapusagafou climate.
The climate in Mesepa, American Samoa, is characterized by warm temperatures throughout the year, with averages consistently around 27°C (81°F) and peaks reaching up to 30°C (86°F) in February. Precipitation varies significantly, with February being the wettest month at 464 mm (18.3 in), while August sees the least rainfall at 128 mm (5.1 in). Sunshine hours are abundant, particularly in March and October, where they reach 310 and 308 hours, respectively. This tropical climate offers a mix of heat and humidity, making it a unique destination. For more detailed information, visit Mesepa climate.
Tafuna, American Samoa, experiences a tropical climate characterized by warm temperatures and significant rainfall throughout the year. Average monthly temperatures hover around 27°C (81°F), with highs reaching up to 30°C (86°F) in February. Rainfall varies, peaking in February with 464 mm (18.3 in), while the driest months are July and August, receiving 128 mm (5.1 in) and 152 mm (6.0 in), respectively. Sunshine is plentiful, with October boasting the highest sunshine hours at 308. For more information, visit Tafuna climate.
Taputimu, American Samoa experiences a tropical climate characterized by warm temperatures and significant rainfall throughout the year. Monthly average temperatures hover around 27°C (81°F), with highs peaking at 30°C (86°F) in February. Rainfall is most abundant in February, receiving up to 464 mm (18.3 in), while the months of July and August are relatively drier with less than 130 mm (5.1 in) each. Despite the rain, sunshine is prevalent, particularly in March and October, with over 300 hours recorded. For more detailed information, visit Taputimu climate.
Vailoatai, American Samoa experiences a tropical climate characterized by warm temperatures year-round, with averages ranging from 26°C (79°F) to 27°C (81°F). The months of January and February tend to receive the most rainfall, with February averaging 464 mm (18.3 in), while August and September are the driest months. Sunshine hours peak in September with 301 hours, indicating a pleasant amount of clear skies. Despite the wet conditions, particularly in the early part of the year, temperatures remain consistently warm, making Vailoatai a tropical escape throughout. For more information, visit Vailoatai climate.
Vaitogi, American Samoa, experiences a tropical climate with consistently warm temperatures averaging around 27°C (81°F) throughout the year. The temperature varies slightly with maximums peaking at 30°C (86°F) in February and minimums dropping to 24°C (76°F) in June and July. Precipitation varies significantly, with February receiving the most rainfall at 464 mm (18.3 in) and August being the driest month at 128 mm (5.1 in). Sunshine is abundant, particularly in the months from March to October, where over 300 hours are recorded. For more detailed information, visit Vaitogi climate.
In conclusion, the climate of the Western District of American Samoa is marked by its warm temperatures, significant rainfall, extensive sunshine, high UV exposure, and consistent daylight duration. These interconnected factors create a vibrant tropical environment that supports rich biodiversity and influences local lifestyles. The region's unique weather patterns, characterized by peaks in both precipitation and sunshine during specific months, emphasize the importance of environmental awareness and preparedness against UV exposure. Overall, understanding these climatic elements is crucial for both residents and visitors who seek to engage with and appreciate the natural beauty of this stunning locale.