Very true. It will start off sunny, turn cloudy in minutes, rain, the sunny again. Rains almost every day mostly in the afternoons. Kauai is the wettest place on earth with more rainfall than anywhere else.I have an aunt who's a nun and spent 7 years on Kauai.
She said it was 80 every day, 70 every night. Also rained for about 20 minutes each day. Never been there myself.
From my last trip there.