Weather Scroll to Continue Kauaʻi Weather Step off the plane and feel the warm embrace of Kauaʻi with average yearly temperatures ranging between 84 and 69 degrees. Ocean temperatures are also perfect ranging from 71 to 81 degrees year round. The Hawaiian Islands Weather Kauai change islandKauaʻi Oʻahu Molokaʻi Lānaʻi Maui Island of Hawaiʻi Kauaʻi Oʻahu Molokaʻi Lānaʻi Maui Island of Hawaiʻi Kauai Poʻipū, Kauaʻi Līhuʻe Kapaʻa Oahu Honolulu, Oʻahu West Side North Shore (Turtle Bay) Molokai Hoʻolehua, Molokaʻi Molokaʻi Airport Kaunakakai City Lanai Lānaʻi City, Lānaʻi Mānele Bay Beach Lānaʻi Airport Maui Kahului Airport, Maui Whalers Village in Kāʻanapali The Shops at Wailea in Wailea Hawaii Hilo, Hawaiʻi Kailua/Kona Puakō Weather data not available for this location. Please try again later. More Kauaʻi Travel Information Go to Kauaʻi Travel Info Page