Campgrounds and RV parks near Del Rio, CA

River recreation drives most outings in this part of the valley. At Caswell Memorial State Park, campers swim at the day-use beach along the Stanislaus River, fish for bass, catfish, crappie and more, and walk shaded trails under valley oaks. George J. Hatfield State Recreation Area offers more than a mile of Merced River frontage with fishing, picnicking, river wading, sunbathing, hiking, kayaking and nature study. Turtle Beach RV Resort sits on the San Joaquin River, is often referred to as a fishing camp for striper and carp, and has a fish-cleaning station and boat launch. French Camp RV Park adds resort-style amenities for guests. Day trips from Del Rio reach Yosemite National Park to the east, the Sacramento-San Joaquin Delta to the west, and wineries around Lodi and Livermore.

Spring and fall are the most comfortable windows for RV travel in the Del Rio area. March through May brings mild days, green hills, and wildflowers, with migratory bird activity along the riparian corridors. October and November cool off quickly, holiday crowds thin out, and river levels drop. Summer is hot and dry. Summer temperatures run 85 to 100 degrees, and it is not unusual to go several consecutive days with 100-plus temperatures from June through September, so shaded sites along the Stanislaus and Merced rivers fill quickly on weekends. Mosquitoes become particularly active during summer months due to the river and dense vegetation, so insect repellent proves essential. River swimming and tubing peak in July and August. Winter is mild but damp. Tule fog forms overnight in the valley and can linger into mid-morning, slowing highway travel. Rain concentrates from December through February, and the Stanislaus runs higher during the wet season. Caswell is open and accepting reservations, though some areas of the park remain closed due to past flooding damage.

Most campgrounds near Del Rio sit on flat valley floor at low elevation, so access roads are easy for larger rigs, though some state park loops have tight turns and length limits. Private parks like Turtle Beach RV Resort offer full hookups with 30/50-amp service and back-in or pull-through sites. State park sites are more rustic. Facilities at Caswell include restrooms with flush toilets and hot showers, drinking water, and each site comes equipped with a picnic table, fire ring, and bear-proof food locker, with no hookups or dump station. Hatfield's parking lot has 20 spaces designated for RVs, limited to 30 feet long and under. Cell coverage is generally reliable along the Highway 99 and I-5 corridors. Bring insect repellent during the warm months and plan for hot afternoons in summer by booking shaded sites or arriving with awnings and extra water.