Situated between Los Angeles and the Mojave Desert, Lake Perris is a great place to cool off, with a massive reservoir that's ideal for fishing, boating, swimming, and even scuba diving. The lands surrounding the park are also great for rock climbing, hiking, horseback riding, and mountain biking, with nine miles of multi-use trails encircling the lake. There's also a museum that focuses on the history and cultural traditions of local indigenous groups. While the park gets plenty of day visitors, those who want to spend the night can book a site at the campground, which has over 400 sites spread across five loops.

1. You can reserve your campsite up to six months in advance on the California State Parks website or over the phone.
2. It’s wise to book ahead to avoid disappointment, particularly if you’re interested in camping on a weekend or during the summer vacation months.
3. In addition to the main campground, there's a primitive equestrian camp with seven campsites plus six reservable group camps.
4. The maximum length for RVs and trailers in the park is 31 feet. Visitors with larger vehicles should consider leaving them at home and bringing a tent or look into alternative RV camping in the area.

Lake Perris is at its busiest between Memorial Day and Labor Day, and temperatures in the 90s and even the 100s are common this time of year. If you'd rather avoid the crowds but still like warm weather, early autumn makes for a great alternative, with fewer kids and more campsite availability, plus ample opportunities to spot migratory birds. The off-season is also great for anglers, and the lake is stocked with fish from fall until spring.

• You can pick up supplies and groceries in the city of Perris, and there are plenty of major stores within a 20-minute drive of the park.
• There are 22 accessible campsites (tent and RV) at the park along with accessible restrooms, parking, and picnic areas.
• All boat operators age 40 and under are required to have a California Boating Card. There are rattlesnakes in the park, but they tend to avoid humans unless provoked.
• The park's ecosystem is under threat of gold-spotted oak borer. As such, oak firewood is not allowed in the park (but firewood is available for purchase in the park).