Monrovia Canyon Park sits in the San Gabriel foothills above the city of Monrovia, about half an hour east of downtown Los Angeles, and it holds one of the most accessible waterfalls in the county. It is also a park that Angelenos spent several years unable to visit: it was closed for an extended period and reopened to the public in June 2025. That absence is worth knowing about, because a lot of the guidance still circulating online describes the park as it was before rather than as it is now.
Vehicle access here closes at six even though the park stays open until nine, and the fee changes at weekends. Ask Karpo about Monrovia Canyon Park hours and gate times before you set out.
The vehicle gate closes three hours before the park does
This is the operational quirk that catches people, and it is worth stating precisely. The park is open seven days a week from 6am to 9pm. Vehicle access, however, closes at 6pm. Visitors may continue to enjoy the park until nine, but they will be doing it on foot from outside the gate, and anyone whose car is inside needs to have moved it.
In practice, that means treating 6pm as the effective end of a driving visit. Arriving at half past five for a quick walk to the falls is a mistake; arriving at four is fine. In winter, when it is dark by five anyway, the gate time is largely academic.
What it costs
Admission is charged per vehicle rather than per person: $5 during the week and $6 at weekends and on holidays. For a car with four people in it that is close to nothing, and it is one of the cheaper foothill parks in the county.
Because the fee is per car, the economics favour carpooling and mildly penalise a solo visit. It is still cheap either way, and unlike the Angeles National Forest trailheads a few miles north, there is no annual pass to buy in advance — you pay at the gate.
The hike is genuinely short
The waterfall trail is a modest out-and-back through the canyon, following the creek under oaks and alders. It is well within reach of children and of anyone who does not hike regularly, which is the main reason the park is popular rather than obscure.
Shade is the feature. The canyon is narrow and wooded and stays substantially cooler than the exposed chaparral slopes around it, which makes this one of the more tolerable Los Angeles County hikes in summer. It is not a strenuous walk and it is not meant to be.
Bears are a genuine consideration here rather than a novelty. The San Gabriel foothills hold a substantial black bear population and Monrovia Canyon has a long history of sightings, particularly around the picnic areas. The rules are the ordinary ones — do not leave food out, do not approach, make noise on blind corners — and following them is the whole of it.
Check the day before you drive
One caution: sources disagree about whether the park observes a weekday closure. Older listings describe a Tuesday closure and shorter weekday hours, while the City of Monrovia's own information indicates the park is open seven days a week. Given that the park reopened relatively recently after an extended closure, the official city page is the one to trust, and a phone call to the park on (626) 256-8282 settles it in thirty seconds.
The same applies after storms. Foothill canyon parks in Los Angeles County close for debris and trail damage fairly regularly, and a wet week is exactly when the waterfall is at its best and the park is most likely to be shut.
The park has more than the one trail as well. Longer routes climb out of the canyon toward the ridge for anyone who wants more than the waterfall walk, and there is a nature centre and picnic infrastructure near the entrance. It is a full afternoon if you want it to be rather than a twenty-minute stop.
When the falls actually run
As with every Southern California waterfall, flow depends on recent rainfall. The strongest showing is in late winter and spring following a wet season; by late summer in a dry year the fall can be reduced to a thin stream. The canyon and the creekside walk remain pleasant regardless, but the photograph you have seen was almost certainly taken in March.
If the waterfall is the whole point of the trip, aim for February through April and go within a week or two of significant rain — but not the day after, when closures are most likely.
Practical notes
Monrovia Canyon Park is in the San Gabriel foothills above Monrovia, in Los Angeles County, and reopened to the public in June 2025 after an extended closure. The park is open seven days a week from 6am to 9pm, but vehicle access closes at 6pm — plan a driving visit around that, not the 9pm close. Entry is charged per vehicle at $5 on weekdays and $6 at weekends and holidays, paid at the gate. The waterfall trail is a short, shaded creekside out-and-back suitable for children. Some older sources list a Tuesday closure and shorter hours; the City of Monrovia's own information indicates seven-day opening, and the park can be reached on (626) 256-8282. Flow is best from late winter into spring.
Tags: #WaterfallsNearMe #LosAngelesHikes #MonroviaCanyon #MonroviaFalls #SanGabrielValley #Hiking #LAOutdoors #CanyonTrails #FamilyHikes #HiddenGems #ThingsToDoInLA #WaterfallsLA #TrailGuides #ShadeHikes
Sources consulted: monroviaca.gov · modernhiker.com · hikespeak.com
All trademarks are the property of their respective owners.
Ask Karpo first
Want to know whether the park is open today, when the vehicle gate shuts, and whether the falls are actually running? Ask Karpo for current Monrovia Canyon Park hours and conditions, a realistic arrival time, and another foothill canyon to switch to if it is closed.
