American Samoa has a warm subtropical climate with warm summers and mild winters.
American Samoa has an average annual temperature of 81.5°F across all 1 city, with approximately 2002 mm of annual precipitation and average humidity of 81%. Temperatures peak in April and drop to their lowest in August, while rainfall is highest during winter months.
The warmest city is Pago Pago with average July highs of 82.6°F, while Pago Pago is the coldest with average January lows of 79.5°F. Humidity remains high throughout the year, especially during winter months, creating warm and humid conditions. These seasonal patterns offer comfortable conditions year-round, with warm summers and mild winters.
| Month | 🌤️ | High | Low | Avg | Humid % | Rain (mm) | Wind (m/s) | Solar (kWh/m²) |
|---|---|---|---|---|---|---|---|---|
| January | 🌧️ | 84.4°F | 79.5°F | 81.9°F | 82% | 285 | 4.3 | 5.90 |
| February | 🌧️ | 84.4°F | 79.9°F | 82.2°F | 81% | 253 | 4.5 | 5.90 |
| March | 🌧️ | 84.6°F | 80.1°F | 82.4°F | 81% | 198 | 4.0 | 5.70 |
| April | 🌧️ | 84.6°F | 80.2°F | 82.4°F | 81% | 177 | 4.2 | 5.10 |
| May | ⛅ | 84.2°F | 79.9°F | 82.0°F | 80% | 149 | 4.8 | 4.50 |
| June | ⛅ | 83.5°F | 79.2°F | 81.3°F | 80% | 88 | 5.6 | 4.20 |
| July | 😎 | 82.6°F | 77.9°F | 80.2°F | 80% | 77 | 5.8 | 4.40 |
| August | 😎 | 82.4°F | 77.7°F | 80.1°F | 79% | 71 | 5.7 | 5.10 |
| September | ⛅ | 82.6°F | 78.1°F | 80.4°F | 80% | 91 | 5.7 | 5.70 |
| October | 🌧️ | 83.1°F | 78.6°F | 80.8°F | 81% | 157 | 5.2 | 6.00 |
| November | 🌧️ | 83.7°F | 79.2°F | 81.3°F | 81% | 216 | 4.6 | 6.10 |
| December | 🌧️ | 84.2°F | 79.2°F | 81.7°F | 81% | 242 | 4.4 | 6.00 |
Showing average climate conditions across 45 years (1981–2025) · averaged across all 1 cities in American Samoa
🧥 Light layers are sufficient — this Mild Winter stays cool without prolonged hard freezes.
🌤️ Conditions are ideal for outdoor activities throughout the day in this Mild Summer.
☔ Heavy Rainfall expected — carry rain gear and plan outdoor activities around these months.
Region-wide monthly averages across 1 city · 1981–2025 · °F
Temperatures rise steadily from spring, peak in April, and gradually decline through autumn into winter.
These seasonal patterns offer comfortable conditions year-round, with warm summers and mild winters.
Region-wide monthly rainfall · 1981–2025 · mm/month
💧 Humidity peaks at 82% in January · annual avg 81%
Monthly averages · 1981–2025
Across 45 years, American Samoa's temperature has remained relatively stable over the past decade. 2024 was the warmest year overall and 1987 the coolest.
The warmest year on record was 2024 (avg: 82.8°F), while the coldest year was 1987 (avg: 79.9°F).
Averaged across all 1 cities in American Samoa · Last 30 years · °F
Averaged across all 1 cities in American Samoa · Last 30 years · mm/year
🔥 hottest · ❄️ coldest · 🌧️ wettest
ℹ️ Values are averages across all 1 cities in American Samoa for each year.
| Year | Min Temp | Avg Temp | Max Temp | Rainfall (mm) | Avg Humidity | Avg Wind |
|---|---|---|---|---|---|---|
2025 | 79.7°F | 82.0°F | 84.4°F | 2092 | 81% | 5.1 m/s |
2024 🔥 | 80.4°F | 82.8°F | 85.1°F | 1901 | 81% | 5.3 m/s |
2023 | 80.2°F | 82.4°F | 84.4°F | 1715 | 81% | 5.0 m/s |
2022 | 79.5°F | 81.7°F | 83.7°F | 1265 | 80% | 5.1 m/s |
2021 | 79.3°F | 81.7°F | 83.8°F | 1443 | 79% | 4.9 m/s |
2020 | 80.4°F | 82.6°F | 84.6°F | 2167 | 81% | 5.0 m/s |
2019 | 80.1°F | 82.4°F | 84.7°F | 2003 | 80% | 4.4 m/s |
2018 | 79.5°F | 81.9°F | 84.2°F | 1795 | 80% | 4.5 m/s |
2017 | 79.9°F | 82.2°F | 84.4°F | 2231 | 80% | 4.5 m/s |
2016 | 80.1°F | 82.4°F | 84.7°F | 2015 | 80% | 4.4 m/s |
Showing 1 to 10 of 45 years
All weather data is sourced from NASA POWER (Prediction of Worldwide Energy Resources), a NASA project providing solar and meteorological data for renewable energy, building efficiency, and agricultural research.
