How Crowded Is Cabrillo in December?
December is an average month at Cabrillo National Monument, running about 0.9× the park's average month — roughly 8% of the year's visitors come in December. That puts it between the July peak and the September low. Overall our best-time score rates December as "Good" for a visit. Typical December weather averages a high near 66°F and a low around 49°F, with about 1.5" of precipitation. You'll get about 9.9 hours of daylight to explore.
Frequently Asked Questions
December is average at Cabrillo National Monument (about 0.9× the average month). Our best-time score rates it "Good". The single best month overall is September.
The busiest month is July and the quietest is September. December sits at about 0.9× the park's average, or 8% of annual visitation.
Source: National Park Service Visitor Use Statistics (1979–2025), NOAA NCEI Climate Normals 1991–2020. Updated 2026-06-20.