JAPDIP Share definition Flag Just Another Perfect Day in Paradise. A phrase to be used when the weather is absolutely perfect outside. Coined in the early 80's by a local weather man in Tampa Florida. i.e. "It's 70 degrees and not a cloud in the sky, it's another JAPDIP" JAPDIP by rbintpa December 14, 2013 0 0 Get merch Get the JAPDIP mug. Buy Now — $32.95 See more merch