Apostle Islands National Lakeshore in August
August at Apostle Islands National Lakeshore averages a daytime high near 76°F and an overnight low around 56°F, with about 3.6" of precipitation. Visitation runs about 3× the park's average month, which makes August a very busy month here.
- Average low
- 56°F
- Average high
- 76°F
Range across the year: 7°F to 77°F
- Precipitation
- 3.6 in
- Daylight
- 14.0 hours
Roughly 25% 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.
It is the single busiest month of the year at Apostle Islands; December, the quietest, runs only about 0.1× the average — a 23-to-1 swing between high and low season.
On our Best Time to Visit score August rates 49/100 ("Fair"). Our recommended month is June: the lightest crowds of the park's good-weather months.
The daily average of about 66°F is a comfortable range for hiking and being outdoors all day. These figures are 1991–2020 NOAA climate normals from the nearest station, about 9.2 miles from the park.
August falls inside the park's busiest stretch: June, July and August together pull about 63% of the year's visitors, so a visit this month means sharing the park with the peak-season crowd.
You'll have about 14 hours of daylight in August to explore — between the 8.3-hour midwinter low and the 15.7-hour summer high.
Park-wide, 2025 drew 261,009 recreation visits, up 2.9% from 253,703 in 2024.
Across the past decade overall visitation has risen about 19.8%, 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 | 77°F / 56°F | 2.9× Very busy | 52 Fair |
| August | 76°F / 56°F | 3.0× Very busy | 49 Fair |
| September | 68°F / 48°F | 1.7× Very busy | 56 Fair |
All twelve months at Apostle Islands, with the best time to visit.
Frequently Asked Questions
August averages a daytime high near 76°F and an overnight low around 56°F at Apostle Islands National Lakeshore, with about 3.6 inches of precipitation. These are 1991–2020 NOAA climate normals from the nearest station, about 9.2 miles from the park, so conditions inside the park can differ, especially at other elevations.
August is very busy at Apostle Islands National Lakeshore (about 3.0× the average month). Our best-time score rates it "Fair" at 49/100. Our recommended month is June.
The busiest month is August and the quietest is December. August sits at about 3.0× the park's average, or 25% of annual visitation.
A typical August sees about 60,000 recreation visits at Apostle Islands National Lakeshore, based on National Park Service monthly counts from 1979–2025.
Where to stay near Apostle Islands in August
Booking a August trip to Apostle Islands National Lakeshore? Compare hotels, cabins and vacation rentals near the park with live August availability and prices.
Top-rated places to stay near Apostle Islands
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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.