Mt. San Jacinto State Park

Idyllwild, California · Campsite openings, cancellations & sold-out date alerts

State Parkslarge parkWatched around the clock

Weekend availability

Live from ReserveCalifornia · checked Sep 17, 3:45 PM PT

Sold out 4 of the next 6 weekends — exactly when cancellation alerts earn their keep.

  • Fri, Sep 18
    Sold out
  • Fri, Sep 25
    Sold out
  • Fri, Oct 2
    Sold out
  • Fri, Oct 9
    Sold out
  • Fri, Oct 16
    Limited
    1/2 campgrounds
  • Fri, Oct 23
    Limited
    1/2 campgrounds
Alert me when a sold-out weekend opens

Sold out for your dates? We'll tell you the second a site opens.

Cancellations at Mt. San Jacinto State Park get rebooked in minutes. We check ReserveCalifornia around the clock and alert you before the crowd refreshes the page.

Set an alert for Idyllwild$9.99/mo — why we charge

Not ready to subscribe? Get a free weekend heads-up.

We'll email you if Mt. San Jacinto State Park opens up for a weekend you pick. No account needed.

How booked is Mt. San Jacinto State Park?

as of July 23

Sites are open right now — we found space out to Jan 2027. That changes fast at a state park. We check Mt. San Jacinto State Park around the clock, so the moment your dates fill up and a cancellation reopens them, you'll be first to know. Weekdays still have room — for now.

Weekends (Saturday night)

Aug 8Open
Oct 24Open
Jan 9Open

Weekdays (Wednesday night)

Aug 19Open
Nov 4Open

Availability checked directly against the reservation system, out to 6 months ahead.

Park type

State Parks

large park

Online booking

Available on ReserveCalifornia

Official state reservation system

Alert coverage

Checked around the clock

Openings, cancellations & new dates

RV camping at Mt. San Jacinto State Park

Straight from ReserveCalifornia's campsite catalog — not estimates.

RV-suitable sites
52
Hookup sites
11
Max rig length
24 ft
ElectricFull hookups (E/W/S)

RV and hookup sites are the first to sell out — set an alert with your rig length and we'll ping you the second a matching site opens. Watch this park →

Why campsites open up at Mt. San Jacinto State Park

California's refund rules create a predictable wave of cancellations. Because campers lose money if they cancel late, most drop their reservations right before the refund deadline — which means openings cluster about a week out from any given date.

If they cancel…They get back
7+ days before arrivalFull site fees refunded, minus the cancellation fee
2–6 days beforeFirst night's fee forfeited; the rest refunded, minus the fee
Under 2 days / no-showNo refund — all fees forfeited

Source: California State Parks camping policies (refund schedule for arrivals on or after July 1, 2026).

How booking Mt. San Jacinto State Park works

  • Sites are reservable up to 6 months ahead on a rolling window — each new date opens exactly six months out.
  • New inventory releases every morning at 8:00 a.m. Pacific Time.
  • There is no waitlist — a cancelled site just reappears in search, first-come, first-served.
  • Have your login and payment saved so you can book in under a minute when your alert lands.

Source: ReserveCalifornia FAQ (California State Parks).

Where Mt. San Jacinto State Park is

25905 Hwy 243

Idyllwild, CA 92549

33.7989, -116.6837

Get directions

Getting a campsite at Mt. San Jacinto State Park

How do I get a campsite at Mt. San Jacinto State Park when it's sold out?

Cancellations happen constantly — the trick is being first to know. Set an alert for your dates and we'll watch Mt. San Jacinto State Park on ReserveCalifornia around the clock, then notify you the moment a site opens. Alerts run on a Pro subscription ($9.99/mo, cancel anytime).

How far ahead can I book Mt. San Jacinto State Park?

California State Parks campgrounds, including Mt. San Jacinto State Park, are reservable up to 6 months in advance on a rolling daily window — each new date becomes bookable exactly six months out, released at 8:00 a.m. Pacific Time. Peak summer and holiday dates at popular parks can sell out within minutes of release.

When do campsites usually open up at Mt. San Jacinto State Park?

Openings are driven by California's cancellation policy. Campers get a full refund (minus the fee) only if they cancel 7+ days before arrival; cancel 2–6 days out and they forfeit the first night; under 2 days there's no refund. That refund cliff produces a predictable wave of cancellations around 7 days before a date — the best window to catch an opening at Mt. San Jacinto State Park.

Does ReserveCalifornia have a waitlist for Mt. San Jacinto State Park?

No. ReserveCalifornia has no waitlist or notification feature. When a site at Mt. San Jacinto State Park is cancelled it simply returns to inventory at full price, first-come, first-served — whoever books it first gets it. That's exactly why an alert service exists.

Where do I book a campsite at Mt. San Jacinto State Park?

Reservations for Mt. San Jacinto State Park are made on ReserveCalifornia, the official booking system for California State Parks. GetParkAlerts is independent — we tell you when a site opens; you book it directly on the official site.

Parks near Mt. San Jacinto State Park

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