Hawaii's rule for a rig is short, and it shapes the trip on every island. Hawaii State Parks says its campgrounds are not set up for camping in vehicles or trailers, and it names a single exception, Waianapanapa State Park on Maui. Everywhere else a motorhome is a daytime rig.
That still leaves plenty of driving. Oahu and the Big Island are day-drive islands, with their nights planned around county and state rules, and Maui holds the one state park night in the rig.
Waianapanapa State Park on Maui
The Hana Highway's one-lane bridges and tight bends keep a motorhome at a crawl most of the way out to Maui's east shore, and a longer rig feels every one of them. Past the last of them is Waianapanapa State Park, a black-sand cove where the surf breaks through sea arches. By late afternoon the day-trippers turn back up the highway, and the people holding a permit keep the arches and the waves to themselves.
For two people, or anyone who'd rather take those bridges in something shorter, the Hawaii campervan page covers the Road to Hana trip and Haleakala.
At the park, a rig sleeps only in the Camper Vehicle Sections on a Campervan Permit, and unmodified vehicles aren't allowed there, as of September 2026 per the Waianapanapa State Park page. Confirm with the listing owner that the motorhome qualifies, then lock in the permit and book the rig around its dates. The section has no hookups, so the rig rolls in with full water and empty tanks.
Everything else on Maui, including the island's other vehicle rules park by park, is on the Maui RV page.
Oahu by day from Honolulu
Oahu is the island most renters look up first, and a rig there works as a day car with a kitchen. Shoreline campgrounds run right to the edge of Honolulu, so a beach afternoon and dinner in the city fit in one easy loop.
Nights are where Oahu gets strict. All four Oahu state parks with camping are tent camping only, so the motorhome spends its nights wherever the stay is booked. The North Shore, the windward beaches and the county campgrounds' own vehicle rules are on the Honolulu RV page.
Kona's lava coast and the road to Volcano
The coast road out of Kona crosses black lava fields, with the ocean on one side and old flows climbing toward the mountains on the other. A full day takes the rig east and uphill to Volcano, the village at the edge of Hawaii Volcanoes National Park, and a galley on board means lunch happens wherever the view is.
Hawaii County sells beach park camping permits online and in advance only, with none sold at the parks and no free camping, as of September 2026. Ask the county whether a vehicle may stay at the park you choose before planning a night in the rig. Kilauea and the Kona side's overnight options are on the Kailua-Kona RV page.
Kauai runs on county permits too, at campgrounds such as Anini, Anahola and Lydgate listed by Kauai County, and its big day is the drive from Lihue out to Waimea Canyon and up to Kokee, where red rock walls drop away below the lookouts. The county's page doesn't spell out vehicle rules, so check with Kauai County before a night in the rig, and the Kauai RV page covers the rest of the island.