Cabrillo National Monument in September
September at Cabrillo National Monument averages a daytime high near 77°F and an overnight low around 65°F, with about 0.2" of precipitation. Visitation runs about 0.9× the park's average month, which makes September an average month here.
- Average low
- 65°F
- Average high
- 77°F
Range across the year: 49°F to 77°F
- Precipitation
- 0.2 in
- Daylight
- 12.2 hours
Roughly 7% of the park's yearly visitors come in September: about 63,000 recreation visits in a typical year, based on National Park Service monthly counts from 1979 to 2025.
It is the quietest month of the year at Cabrillo; by contrast July, the busiest, runs about 1.3× the average — so September is the easiest time to have the place largely to yourself.
September is our recommended month at Cabrillo: pleasant weather with noticeably thinner crowds (shoulder season).
The daily average of about 71°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 2.3 miles from the park.
Because June, July and August together draw about 29% of annual visitors, choosing September instead steps outside that summer crush — the single biggest lever on how crowded the park feels.
You'll have about 12.2 hours of daylight in September to explore — between the 9.9-hour midwinter low and the 14.1-hour summer high.
Park-wide, 2024 drew 845,912 recreation visits, up 4.4% from 810,147 in 2023.
Across the past decade overall visitation has eased about 17.2%, so September may feel a touch quieter than it once did.
How September compares with the months around it
| Month | Avg high / low | Crowds | Best-time score |
|---|---|---|---|
| August | 77°F / 67°F | 1.1× Average | 69 Good |
| September | 77°F / 65°F | 0.9× Average | 89 Excellent |
| October | 75°F / 60°F | 0.9× Average | 89 Excellent |
All twelve months at Cabrillo, with the best time to visit.
Things to do at Cabrillo in September
The National Park Service tags 4 Cabrillo activities for fall. Each links to the park's own page for it.
- Visit the Cabrillo Tidepools · reservation required
- Bayside Trail · 1-2 hours
- Coastal Trail · 30-60 minutes
- Earn Your Cabrillo Junior Ranger Badge · 30-90 minutes · reservation required
Frequently Asked Questions
September averages a daytime high near 77°F and an overnight low around 65°F at Cabrillo National Monument, with about 0.2 inches of precipitation. These are 1991–2020 NOAA climate normals from the nearest station, about 2.3 miles from the park, so conditions inside the park can differ, especially at other elevations.
September is average at Cabrillo National Monument (about 0.9× the average month). Our best-time score rates it "Excellent" at 89/100. September is our recommended month for this park.
The busiest month is July and the quietest is September. September sits at about 0.9× the park's average, or 7% of annual visitation.
A typical September sees about 63,000 recreation visits at Cabrillo National Monument, based on National Park Service monthly counts from 1979–2025.
Where to stay near Cabrillo in September
Booking a September trip to Cabrillo National Monument? Compare hotels, cabins and vacation rentals near the park with live September availability and prices.
Top-rated places to stay near Cabrillo
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 September.
Source: National Park Service Visitor Use Statistics (1979–2025), NOAA NCEI Climate Normals 1991–2020. Updated 2026-10-11.