Mele Kalikimaka is the thing to say on a bright Hawai’ian Christmas Day. It’s currently 71F/21C where I live, and the weather will probably hold through the week.
Here’s a great article from JStor on how Mele Kalikimaka is the Hawai’ian equivalent of Merry Christmas. It’s weird, fascinating, and totally worth your time!
And here’s the legendary Bing Crosby singing the song for you: