Cumberland Island National Seashore in August
August at Cumberland Island National Seashore averages a daytime high near 89°F and an overnight low around 74°F, with about 6.5" of precipitation. Visitation runs about 0.7× the park's average month, which makes August a quiet month here.
- Average low
- 74°F
- Average high
- 89°F
Range across the year: 43°F to 89°F
- Precipitation
- 6.5 in
- Daylight
- 13.1 hours
Roughly 6% of the park's yearly visitors come in August: roughly 3,400 recreation visits in a typical year, 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 62/100 ("Good"). Our recommended month is October: pleasant weather with noticeably thinner crowds (shoulder season).
The daily average of about 81°F is warm enough that midday heat is worth planning around. These figures are 1991–2020 NOAA climate normals from the nearest station, about 3.5 miles from the park.
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.
How August compares with the months around it
| Month | Avg high / low | Crowds | Best-time score |
|---|---|---|---|
| July | 89°F / 74°F | 1.3× Busy | 38 Poor |
| August | 89°F / 74°F | 0.7× Quiet | 62 Good |
| September | 85°F / 71°F | 0.6× Quiet | 74 Good |
All twelve months at Cumberland Island, with the best time to visit.
Things to do at Cumberland Island in August
The National Park Service tags 21 Cumberland Island activities for summer. Here are 8 of them. Each links to the park's own page for it.
- Beachcombing · 1-2 hours
- Bike to Plum Orchard · 3-5 hours
- Birdwatching at Dungeness
- Explore the Ice House Museum · 10-30 minutes
- Hike the Southend Loop · 3-5 hours
- Kayak to the Island · reservation required
- Plan a Backpacking Trip · 1-7 days · reservation required
- Shop at the Bookstore
Frequently Asked Questions
August averages a daytime high near 89°F and an overnight low around 74°F at Cumberland Island National Seashore, with about 6.5 inches of precipitation. These are 1991–2020 NOAA climate normals from the nearest station, about 3.5 miles from the park, so conditions inside the park can differ, especially at other elevations.
August is quiet at Cumberland Island National Seashore (about 0.7× the average month). Our best-time score rates it "Good" at 62/100. Our recommended month is October.
The busiest month is March and the quietest is January. August sits at about 0.7× the park's average, or 6% of annual visitation.
A typical August sees about 3,000 recreation visits at Cumberland Island National Seashore, based on National Park Service monthly counts from 1979–2025.
Where to stay near Cumberland Island in August
Booking a August trip to Cumberland Island National Seashore? Compare hotels, cabins and vacation rentals near the park with live August availability and prices.
Top-rated places to stay near Cumberland Island
Prices for Oct 30–Nov 1, 4 adults. Change dates on the map below.
Availability and prices from Stay22 partners (Booking.com, Vrbo, Expedia). We may earn a commission from bookings, at no extra cost to you.
Visiting Cumberland Island in August?
Get crowd forecasts and lodging deals for Cumberland Island by email. No spam, unsubscribe anytime.
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.