i can't guarantee it hon, but i think the month you would want to AVOID is late spring, such as march to april-ish. i was told that one year, it rained for almost two months solid in late spring! it's been a while though, i had to re-read your post/s to see. now i cannot recall if it was late spring or late fall. (?!)
have you tried to hit up weather sites or do a little bit of reading? perhaps you can google "weather averages for hawai'i in december" and look at what the weather service says. I am SO not trying to be flippant or a smarty pants at all. I just eel like what i am adding here may not be enough help!
heads up, unless you are an EXPERT swimmer and surfer be sure to ask friendly locals where to swim if you wish to swim. The waves go from being as placid as a bath most of the year in some parts to huge epic waves EVERY winter, its when the surfers hold most of their competitive events.
If you had children and/or inexperienced swimmers and wanted them to be safe to go in the water, i recommend Kahala Bay, close to kahala/waikiki area. I was told it's calm year round. D
hey, I think in winter may be when you can go looking for the animals that migrate if nature watching is your bag. the dolphin and whale come around december or janruary, maybe you will be lucky to see some.
It's like this...enchanted land. Sometimes Nature dosn't cooperate, I will hope and pray you get many sunny days. just be prepared for anything...bring sunblock AND an umbrella or poncho!
lucky you, I wanna go back SO bad! I stayed with my husband for a month.
<3
~mel
