Of course it doesn't rain constantly all winter, and all of Hawaii will be warmer than many mainland climates. However, Kauai has astounding rainfall totals year round, and North is the greenest part of the island. Flooding, mudslides and tourist rescues (from *closed trails* and rough oceans) are regular news in winter. People see photos of the beautiful pali taken in other seasons and assume winter is the same. We have stayed south on Kauai in winter (usually February) in the past, choosing good weather days to tour north.

Who knows how much this will improve/worsen with Climate Change? I'm north of Chicago experiencing typical February weather in late November. It's been the bleakest November in 20 years. The temperature spread predicted for today is three degrees, rising from 20F overnight. (We were 17F at dawn, with 4" of snow on the ground.)

I'd allow 7 days for what you list to see and do on Oahu. I can't think of anything to add, you've hit the usual highlights. Maybe one of the farmer's markets if the days and times work? Foster Botanical Gardens pairs well with Chinatown and Iolani Palace if you need more things.

I've never bought a pass for transportation, just pay as I go using The Bus.

What we want to do in Oahu...
1.Some nightlife
2.Beach time for first day
3.Pearl Harbor
4.Diamond head hike
5.Polynesian culture centre for luau
6.Halona blowhole lookout
7.Iolani Palace
8.Bishop museum
9.Drive the coast.

If you do have a car, I would combine the Diamond Head "hike" (it's more of a walk than a hike) with a visit to Kailua and Lanikai beaches, then cut across the island on the H3 (which is simply spectacular in parts) to Haleiwa and the north shore beaches. This can easily be done in one long day. If you're up for it, kayaking out of Kailua is great -- we went with Kailua Sailboard. https://www.kailuasailboards.com/

Hello everyone, we are still searching for condos in Kauai. Princeville seems to have very good deals! Is it because of the April rain damage, north of Kauai? Does anybody know if we can , even visit the north ? Thank you.