Whether you visit Kauai or any other other Hawaiian island, you definitely want to stay away from the entire Easter week 3/17 – 3/23, which is really when most Hawaii hotels and resorts have a 100% occupancy and beaches and restaurants are crowded.
Booking before the Easter week, does not make sense either, as hotels, car rentals and air fares are still offered at high season rates.
So my recommendation for your trip to Kauai, start your Hawaii travel plans with April (May – middle of June would be fine too). For some odd reason (sometimes I think, one is that it’s tax month), April is not a big travel month to the islands.
You will get great deals on air fares, car rentals, hotels or private vacation rentals. And the weather is the same nice as other months – actually nicer than hot summer months.
Jump on it. Have a great time on Kauai. Aloha, Pua