Kauai is one of the oldest of the main Hawaiian islands, and it looks it: the volcano that built it has been eroding for a very long time into a canyon, sheer green valleys and a coast of cliffs. It is the fourth largest island and no road goes all the way around it, because the Nā Pali Coast and Waimea Canyon are in the way. Kauai was also the one island Kamehameha never took by force. He tried in 1796, and in 1810 the island's last independent chief, Kaumualiʻi, went to Honolulu and negotiated a peaceful surrender, keeping his power over the island. It still feels a little apart from the rest of Hawaii.
Kauai is quieter than Maui or Oʻahu, with wild chickens in the parking lots, one-lane bridges and a habit of building low, which locals sum up as nothing taller than a coconut palm. Five days fits because the island is a line out in two directions: sunny beaches and gardens on the south shore, a green, wet north shore that ends at a trailhead. The catch is the sea. On the north shore the same bay is a lake in July and a washing machine in January, so the season decides what you do.
This plan assumes you stay on one of three bases (see Where to Stay) and drive. Day one is Poʻipū and Kōloa, day two Waimea Canyon, Kōkeʻe and a sunset sail on the Nā Pali Coast, day three Līhuʻe, the Wailua River and Kapaʻa, day four Kīlauea and Hanalei, day five Hāʻena at the end of the road. We recommend starting on a Tuesday: the Allerton Garden tours run on Tuesdays, Thursdays and Saturdays, Kīlauea Point is open only Wednesday to Saturday (so day four lands on a Friday), and the Hāʻena day falls on a Saturday. The plan is written for normal operation. Hurricane Lowell struck in September 2026 and left some parks and roads closed, so read the After Hurricane Lowell tip, which holds the late-October 2026 status, before you book. If you have been on Maui or Oʻahu, Kauai is the one that asks you to slow down. More on the country in United States.