A spurious Latin-Greek formation coined by the Greekless which attempts to express love for rain but in fact manages to express both pretentiousness and ignorance, the proper Greek formation being "ombrophile,' with ὄμβρος meaning long rain.
(Note: A psekaphile would be one who likes drizzling rain, and an hyetophile one who likes the rain in general.)
Pretentious Jerk: "He's a real pluviophile. He would be happy in Vancouver."
Jerk: "Why, you're no Classicist! It's ombrophile! Go study Greek!"