27px, we want 27. Please register or login . Many deep drainages hide an abundantly lush growth of vegetation with oak woodlands thick in the lower elevations. Annual rainfall averages 15 to 20 inches, most of it falling in winter and early spring, and flashfloods in narrow canyons of the area should be expected in heavy downpours. Spring brings a wealth of wildflower bloom.
Summers tend to be very hot and very dry.
Without significant bodies of water, you will probably find small pools in San Mateo Canyon itself most of the year. Lizards, rattlesnakes, coyotes, skunks and mice are commonly seen. Mountain lions are rarely seen. This trail is joined by at least six others, most of them easy to moderate, including the 5.4 mile Tenaja Falls Trail. Tenaja Falls, when spring brings a rush of water, creates a dramatic sight.