How Crowded Is Cumberland Island National Seashore in August?

August runs about 0.7× Cumberland Island National Seashore's average month, which makes it a quiet month here — roughly 6% of the park's yearly visitors come in August.

In a typical August the park sees roughly 3,400 recreation visits, based on National Park Service monthly counts from 1979 to 2025.

That makes August the 10th-busiest of the park's twelve months, sitting between the March peak (1.6×) and the January low (0.6×).

On our Best Time to Visit score August rates 70/100 ("Good"), versus the top-rated October at 76/100 — 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 89°F and an overnight low around 74°F, with about 6.5" 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 26% of the year's visitors, so a visit this month means sharing the park with the peak-season crowd.

You'll have about 13.1 hours of daylight in August to explore — between the 10-hour midwinter low and the 14-hour summer high.

Park-wide, 2025 drew 60,299 recreation visits, down 6.8% from 64,706 in 2024.

Across the past decade overall visitation has risen about 18.4%, so a August visit is likely to feel busier than it did a few years ago.