Sleeping in a campervan can be a unique and exciting experience, but when combined with heavy rain and thunder at night, it can be even more memorable. The sound of raindrops hitting the roof of the campervan and the rumble of thunder in the distance can create a relaxing and cozy atmosphere, perfect for a good night's sleep. While some may find the sound of heavy rain and thunder intimidating, others find it soothing and comforting.