Fort Sumter and Fort Moultrie National Historical Park in August
August at Fort Sumter and Fort Moultrie National Historical Park averages a daytime high near 90°F and an overnight low around 72°F, with about 6.7" of precipitation. Visitation runs about 1.2× the park's average month, which makes August an average month here.
- Average low
- 72°F
- Average high
- 90°F
Range across the year: 37°F to 91°F
- Precipitation
- 6.7 in
- Daylight
- 13.2 hours
Roughly 10% of the park's yearly visitors come in August: about 60,000 recreation visits in a typical year, 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 34/100 ("Poor"). Our recommended month is November: pleasant weather with noticeably thinner crowds (shoulder season).
The daily average of about 81°F is hot, with afternoons near 90°F to plan the day around. These figures are 1991–2020 NOAA climate normals from the nearest station, about 0.9 miles from the park.
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.
How August compares with the months around it
| Month | Avg high / low | Crowds | Best-time score |
|---|---|---|---|
| July | 91°F / 73°F | 1.5× Busy | 18 Poor |
| August | 90°F / 72°F | 1.1× Average | 34 Poor |
| September | 86°F / 68°F | 0.7× Quiet | 66 Good |
All twelve months at Fort Sumter and Fort Moultrie, with the best time to visit.
Frequently Asked Questions
August averages a daytime high near 90°F and an overnight low around 72°F at Fort Sumter and Fort Moultrie National Historical Park, with about 6.7 inches of precipitation. These are 1991–2020 NOAA climate normals from the nearest station, about 0.9 miles from the park, so conditions inside the park can differ, especially at other elevations.
August is average at Fort Sumter and Fort Moultrie National Historical Park (about 1.1× the average month). Our best-time score rates it "Poor" at 34/100. Our recommended month is November.
The busiest month is July and the quietest is January. August sits at about 1.1× the park's average, or 10% of annual visitation.
A typical August sees about 60,000 recreation visits at Fort Sumter and Fort Moultrie National Historical Park, based on National Park Service monthly counts from 1979–2025.
Where to stay near Fort Sumter and Fort Moultrie in August
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Top-rated places to stay near Fort Sumter and Fort Moultrie
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See the full ranking of the best national parks to visit in August.
Source: National Park Service Visitor Use Statistics (1979–2025), NOAA NCEI Climate Normals 1991–2020. Updated 2026-10-11.