Channel Islands National Park in August
August at Channel Islands National Park averages a daytime high near 72°F and an overnight low around 57°F. Visitation runs about 1.3× the park's average month, which makes August a busy month here.
- Average low
- 57°F
- Average high
- 72°F
Range across the year: 42°F to 72°F
- Precipitation
- 0.0 in
- Daylight
- 13.3 hours
Roughly 11% of the park's yearly visitors come in August: about 35,000 recreation visits in a typical year, based on National Park Service monthly counts from 1979 to 2025.
That makes August the 2nd-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 58/100 ("Fair"). Our recommended month is November: pleasant weather with noticeably thinner crowds (shoulder season).
The daily average of about 64°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 29.6 miles from the park.
August falls inside the park's busiest stretch: June, July and August together pull about 35% of the year's visitors, so a visit this month means sharing the park with the peak-season crowd.
You'll have about 13.3 hours of daylight in August to explore — between the 9.7-hour midwinter low and the 14.3-hour summer high.
Park-wide, 2025 drew 227,186 recreation visits, down 13.5% from 262,581 in 2024.
Across the past decade overall visitation has eased about 13.6%, 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 | 71°F / 57°F | 1.5× Busy | 52 Fair |
| August | 72°F / 57°F | 1.3× Busy | 58 Fair |
| September | 71°F / 56°F | 1.1× Average | 63 Good |
All twelve months at Channel Islands, with the best time to visit.
Seasonal closures in August 2027
The National Park Service lists these Channel Islands facilities as closed during August 2027. The dates are the park's own, read on October 11, 2026. A facility that is not listed here may still be closed, so confirm on the park's site before you go.
- Santa Rosa Island Backcountry Beach Camping (campground): closed until August 14, 2027
Frequently Asked Questions
August averages a daytime high near 72°F and an overnight low around 57°F at Channel Islands National Park. These are 1991–2020 NOAA climate normals from the nearest station, about 29.6 miles from the park, so conditions inside the park can differ, especially at other elevations.
August is busy at Channel Islands National Park (about 1.3× the average month). Our best-time score rates it "Fair" at 58/100. Our recommended month is November.
The busiest month is July and the quietest is January. August sits at about 1.3× the park's average, or 11% of annual visitation.
A typical August sees about 35,000 recreation visits at Channel Islands National Park, based on National Park Service monthly counts from 1979–2025.
Where to stay near Channel Islands in August
Booking a August trip to Channel Islands National Park? Compare hotels, cabins and vacation rentals near the park with live August availability and prices.
Top-rated places to stay near Channel Islands
Prices for Oct 30–Nov 1, 4 adults. Change dates on the map below.
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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.