How Crowded Is Fort Sumter and Fort Moultrie National Historical Park in August?

August runs about 1.2× Fort Sumter and Fort Moultrie National Historical Park's average month, which makes it an average month here — roughly 10% of the park's yearly visitors come in August.

In a typical August the park sees about 60,000 recreation visits, based on National Park Service monthly counts from 1979 to 2025.

That makes August the 5th-busiest of the park's twelve months, sitting between the July peak (1.5×) and the January low (0.5×).

On our Best Time to Visit score August rates 45/100 ("Fair"), versus the top-rated September at 68/100 — pleasant weather with noticeably thinner crowds (shoulder season).

Typical August weather, from 1991–2020 NOAA climate normals at the nearest station, averages a daytime high near 90°F and an overnight low around 72°F, with about 6.7" of precipitation.

That average of about 81°F is warm enough that midday heat is worth planning around.

August falls inside the park's busiest stretch: June, July and August together pull about 34% of the year's visitors, so a visit this month means sharing the park with the peak-season crowd.

You'll have about 13.2 hours of daylight in August to explore — between the 9.9-hour midwinter low and the 14.1-hour summer high.

Park-wide, 2025 drew 814,658 recreation visits, up 112% from 384,308 in 2024.

Across the past decade overall visitation has eased about 39.7%, so August may feel a touch quieter than it once did.