San Mateo Canyon Wilderness
Mountains covered with chaparral and coastal sage dominate the landscape of San Mateo Canyon Wilderness. Many deep drainages hide a 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; flash floods rip through narrow canyons in heavy downpours. Spring brings a wealth of wildflower blooms. Summers tend to be very hot and dry, though you will probably find small pools in San Mateo Canyon most of the year. Keep an eye open for wildlife: 139 bird species, 37 mammal species, 46 reptile and amphibian species, seven species of fish.
Description from Wilderness Connect (wilderness.net).
| Designation | Wilderness |
| Managed by | U.S. Forest Service |
| State | California |
| Size | 39,412 acres |
| Designated | 1984, by Congress |
| Center point | 33.54° N, 117.42° W |
| Night sky | About as dark as the ground gets (Black Marble reading 14) |
Boundary map
Boundary, simplified to about 0.005 degrees Federal campground
The outline is the agency boundary simplified for display, so small parcels and inholdings may not show. The agency page has the authoritative map.
Weather by month
Large units span more than one climate. The station stands in for the center point, and the outer parts of the boundary can be warmer or colder.
Where to camp
None of the 3 federal campgrounds within ten miles sit inside the boundary. Nearest first. Distances are from the campground point to the boundary edge, from the Campsite Atlas index.
Trails
14 named Forest Service trails enter this wilderness, 61 miles in all. The 10 longest are listed here.
| Trail | Miles | Allowed uses |
|---|---|---|
| Tenaja ↗ | 8.6 | |
| San Mateo ↗ | 7.7 | |
| Clark ↗ | 6.9 | |
| Lucas Canyon ↗ | 5.7 | |
| Tenaja Falls ↗ | 5.4 | |
| Verdugo Trail ↗ | 5.2 | |
| Bear Canyon ↗ | 4.7 | |
| Indian Potrero ↗ | 4.5 | |
| Bluewater | 4.3 | |
| Morgan | 4.2 |
Lengths and allowed uses come from the Forest Service trail layer by way of Trailhead Atlas. This trail list was copied from Trailhead Atlas on November 1, 2026 and is copied again on each weekly run. Trails in plain text have no page there yet.
Fire nearby
- PrescribedGreater El Cariso Rx
6 mi from the center point
- WildfireGreen
45 mi from the center point · 55 acres
- PrescribedAnf/Rx Burn
49 mi from the center point
Distance is to the reported incident point, not the fire edge, and is measured from the center of a boundary that may be many miles across. Check the agency page for closures.
Explore
Nearby on the other atlases
- 11 miModjeska House ↗National Historic Landmark
- 0.4 miGreystone Villa--Cabin 18 ↗Cleveland National Forest, CA
- 4.1 miCrescent Bathhouse ↗Lake Elsinore, CA
- 4.5 miArmory Hall ↗Lake Elsinore, CA
- 8.1 miCalifornia Theatre, The ↗San Bernardino, CA
- 8.2 miParra, Miguel, Adobe ↗San Juan Capistrano, CA
- 8.2 miHarrison House ↗San Juan Capistrano, CA
- 8.2 miGoldschmidt House ↗San Clemente, CA
Landmarks are listed first, then by distance from the boundary.
Guidebooks for California
We earn a small commission if you buy through these links. It does not change what we list.
Titles come from Open Library's catalog, matched by subject heading or by title.
Reference
Questions people ask
How big is San Mateo Canyon Wilderness?
39,412 acres.
Source: Wilderness Connect
Who manages San Mateo Canyon Wilderness?
The U.S. Forest Service.
Source: Wilderness Connect
What state is San Mateo Canyon Wilderness in?
California.
Source: Wilderness Connect
When was San Mateo Canyon Wilderness designated?
Congress designated it in 1984.
Source: Wilderness Connect
Can I camp at San Mateo Canyon Wilderness?
Camping inside a wilderness is usually allowed away from roads, with no facilities, and the managing agency page has the permit rules. The federal campgrounds within ten miles are listed under Where to camp.
Source: Where to camp
How do I get to San Mateo Canyon Wilderness?
A point inside the boundary is at 33.542° N, 117.423° W. Juan Bautista de Anza National Historic Trail is 19 miles away. The official page carries directions and the office address.
Source: Wilderness Connect
Is there a fire near San Mateo Canyon Wilderness right now?
3 active incidents within 50 miles as of 2026-11-01, the nearest Greater El Cariso Rx at 6 miles. Distance is to the reported incident point, not the fire edge.
Source: Fire nearby
Which national parks are near San Mateo Canyon Wilderness?
Juan Bautista de Anza National Historic Trail (19 mi). Park Atlas has fees, hours and alerts for each.
Source: Nearby on the other atlases
Are there historic places near San Mateo Canyon Wilderness?
The National Register has 30 listings within 15 miles, including Modjeska House and Greystone Villa--Cabin 18.
Source: Register Atlas
Sources
- Boundary, name, acreage, designation year, states and description: Wilderness Connect.
- Campgrounds: the Campsite Atlas index of federal campgrounds, matched to this boundary at build time.
- Trailheads and sites: the Forest Service Recreation Opportunities layer, points inside the boundary.
- Trails: the Trailhead Atlas open-data file of Forest Service trails, matched on the wilderness each trail enters.
- Night sky: NASA Black Marble (VIIRS, 2016 composite) sampled at zoom 6 around the center point.
- Weather, alerts, air quality, river flow and earthquakes load live in your browser from NWS, AirNow, USGS and iNaturalist when you open the page.