Most Yosemite campsite reservations open up on a rolling basis 5 months in advance, typically on the 15th of each month, at 7am PT. However, it's notoriously difficult to secure a Yosemite campsite reservation even if you plan ahead. Hundreds of hopeful campers all log on at 7am trying to book a campsite, and only a few are lucky enough to succeed, as the campsites are booked up within seconds.
To increase your chances of snagging a campsite, set up a free Hipcamp alert for any Yosemite campground. We'll monitor campground availability, and you'll get instantly notified of any openings that come up for your dates so you can jump on it to reserve the newly open site. Set up an alert.