Best time to visit National Park of American Samoa
The short answer
Best months to visit National Park of American Samoa: August–September. Daily highs run around 80°F, with about half of April's visitors.
How we picked these months: each month is scored on daily highs (65–82°F is ideal), rain, snow and seasonal closures, then reduced by up to 30% for crowds, measured against the park's busiest month. We list the months within 15% of the top score (at most 5).
Weather and crowds by month
National Park of American Samoa month by month
Park-wide averages across 4 locations. Crowds compare each month with the park's busiest month: Quiet is under 35% of it, Moderate under 60%, Busy under 85%, Peak above that.
| Month | Rating | High / low | Rain | Crowds | Closures |
|---|---|---|---|---|---|
| January | Fair | 81° / 77°F | 13.3 in | Quiet | – |
| February | Fair | 81° / 77°F | 15.9 in | Moderate | – |
| March | Fair | 81° / 78°F | 8.8 in | Busy | – |
| April | Fair | 81° / 77°F | 11.1 in | Peak | – |
| May | Fair | 81° / 77°F | 8.4 in | Moderate | – |
| June | Good | 80° / 77°F | 5.4 in | Quiet | – |
| July | Good | 79° / 76°F | 5.0 in | Moderate | – |
| August | Best | 79° / 76°F | 4.2 in | Quiet | – |
| September | Best | 79° / 76°F | 3.4 in | Busy | – |
| October | Fair | 79° / 77°F | 7.0 in | Peak | – |
| November | Fair | 80° / 77°F | 9.8 in | Busy | – |
| December | Fair | 81° / 77°F | 14.5 in | Quiet | – |
Weather by location
Parks with a big range of elevation can differ a lot from one area to another. Open a location to see its own numbers.
Park-wide (center of the park)
| Month | High | Low | Rain |
|---|---|---|---|
| January | 83°F | 80°F | 13.7 in |
| February | 83°F | 80°F | 15.5 in |
| March | 83°F | 80°F | 9.0 in |
| April | 83°F | 80°F | 11.1 in |
| May | 83°F | 80°F | 8.6 in |
| June | 82°F | 79°F | 5.3 in |
| July | 81°F | 79°F | 5.0 in |
| August | 81°F | 78°F | 4.3 in |
| September | 81°F | 79°F | 3.3 in |
| October | 82°F | 79°F | 6.6 in |
| November | 82°F | 79°F | 9.8 in |
| December | 83°F | 79°F | 14.3 in |
Tutuila Unit
| Month | High | Low | Rain |
|---|---|---|---|
| January | 79°F | 75°F | 13.1 in |
| February | 79°F | 75°F | 16.4 in |
| March | 79°F | 75°F | 9.3 in |
| April | 79°F | 75°F | 11.5 in |
| May | 79°F | 75°F | 8.4 in |
| June | 78°F | 75°F | 6.2 in |
| July | 77°F | 74°F | 4.7 in |
| August | 77°F | 74°F | 4.4 in |
| September | 77°F | 74°F | 3.9 in |
| October | 78°F | 74°F | 7.6 in |
| November | 78°F | 75°F | 10.0 in |
| December | 79°F | 75°F | 14.5 in |
Ofu Unit
| Month | High | Low | Rain |
|---|---|---|---|
| January | 83°F | 80°F | 13.1 in |
| February | 83°F | 80°F | 15.7 in |
| March | 83°F | 80°F | 8.6 in |
| April | 83°F | 80°F | 11.0 in |
| May | 83°F | 80°F | 8.1 in |
| June | 82°F | 80°F | 5.0 in |
| July | 81°F | 79°F | 5.1 in |
| August | 81°F | 79°F | 3.9 in |
| September | 81°F | 79°F | 3.1 in |
| October | 82°F | 79°F | 6.7 in |
| November | 82°F | 79°F | 9.6 in |
| December | 83°F | 79°F | 14.5 in |
Ta‘ū Unit
| Month | High | Low | Rain |
|---|---|---|---|
| January | 78°F | 75°F | 13.3 in |
| February | 79°F | 75°F | 16.0 in |
| March | 79°F | 75°F | 8.4 in |
| April | 79°F | 75°F | 10.9 in |
| May | 78°F | 75°F | 8.4 in |
| June | 78°F | 75°F | 5.3 in |
| July | 77°F | 74°F | 5.4 in |
| August | 76°F | 74°F | 4.1 in |
| September | 77°F | 74°F | 3.4 in |
| October | 77°F | 74°F | 6.9 in |
| November | 78°F | 74°F | 10.1 in |
| December | 78°F | 75°F | 14.6 in |
National Park of American Samoa by season
Spring (March–May)
Spring (March–May) is a mixed time to visit National Park of American Samoa. Daily highs average 81°F and lows 77–78°F. Expect about 9.5 in of rain a month and little or no snow. Visitor numbers run 42–100% of the busiest month, which is busy by this park's standards.
Summer (June–August)
Summer (June–August) is a good time to visit National Park of American Samoa. Daily highs average 79–80°F and lows 76–77°F. Expect about 4.9 in of rain a month and little or no snow. Visitor numbers run 19–37% of the busiest month, which is quiet by this park's standards.
Fall (September–November)
Fall (September–November) is a good time to visit National Park of American Samoa. Daily highs average 79–80°F and lows 76–77°F. Expect about 6.7 in of rain a month and little or no snow. Visitor numbers run 67–93% of the busiest month, which is busy by this park's standards.
Winter (December–February)
Winter (December–February) is a mixed time to visit National Park of American Samoa. Daily highs average 81°F and lows 77°F. Expect about 14.6 in of rain a month and little or no snow. Visitor numbers run 23–47% of the busiest month, which is quiet by this park's standards.
For what to do in each season, see our guides to trip planning, fees and hours and trails, where the planning page also has our written advice on when to go. In-depth topic guides cover individual places and hikes.
What the National Park Service says about the weather
American Samoa is in the South Pacific Ocean, between the Equator and the Tropic of Capricorn. A tropical climate prevails with warm or hot temperatures year-round and high humidity. Rain showers are frequent and can last only for a few minutes or all-day. The average annual rainfall is 125-inches in the dryer areas to as much as 300-inches in the highest mountains. Tropical storms are more prevalent during the long, wet summer season (October -May) and a slightly cooler and drier season (June-September)
Weather: modeled monthly averages for 2014-2023 (Open-Meteo Archive API), averaged over 4 locations. Modeled grid cells can read cooler than weather stations in deep canyons and deserts, and warmer or colder at high elevation. Visits: monthly recreation visits for 2021-2024, National Park Service.
