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
Monthly averages · 1981–2025
💧 Humidity peaks at 82% in January · annual avg 81%
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 10 years · °F
Averaged across all 1 cities in American Samoa · Last 10 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.
