Hawaii by month · 5 of 12
Hawaii RV rental in May
May falls inside Hawaii's best RV window (April to October).
Trade winds keep temperatures pleasant; winter brings more rain on windward sides and higher surf that can affect coastal camping.
PickRV
Published by PickRV
May on the ground
Weather & conditions
Dry, warm, and calm — classic trade-wind weather. High 84°F, Low 70°F.
May is a quiet, lovely shoulder month; Lei Day opens it with flowers, and the summer family wave has not landed yet.
What to do in May
- Lei Day celebrations on May 1
- Calm-water snorkeling mornings
- Crater-rim walks at Hawaii Volcanoes National Park
Best-fit rigs: Truck or van · Motorhome
Know before you go
Vog can drift over leeward Big Island districts when the volcano is active — sensitive travelers should watch air-quality notes.
Flash floods are common in valleys during heavy rain. Tsunami warnings occur periodically. Limited RV infrastructure outside big islands.
From the verified event registry
May events in Hawaii
No verified large-scale May events in our Hawaii registry yet — we only list events we can date and source, never filler. The full calendar tracks what's confirmed.
Hawaii events calendarTrip notes
May tips for Hawaii
Layer up: shoulder-pattern days can swing from a chilly dawn to t-shirt warmth by afternoon.
Pack rain gear and leveling mats for soft or wet sites.
Carry a weather radio and check forecasts daily — transitional months turn fast.
Keep planning
Plan the Hawaii trip
Nearby & related
Keep planning Hawaii
Sourced costs, campground directories, and the places worth a detour — the next layer of Hawaii trip planning.