We sailed to Hawaii 2 years ago in March. The first and last seadays were very chilly, the other days were much better.
We stayed at the pool, but sometimes had to find a place out of the wind.
We have done this also twice. Ok once and are doing again in 2 weeks.
We just LOVE te sea days and to us? Hawaii is a bonus.
As stated above, the 1st two days can be a bit rough. We go in Oct. and again. The 1st 2 days can be a bit chilly but I was still in shorts. After that. Suning on the balcony.
Thanks everyone for your input. I think I now have a better idea as to how to pack for this trip. My husband agrees with you in that Hawaii is just a bonus.