Actually, hailstorms happen in tropical regions occasionally. Here is the link to an article about this: https://journals.ametsoc.org/doi/pdf/10.1175/1520-0450%281967%29006%3C0339%3AHIITT%3E2.0.CO%3B2. read more
Condensation is too slow The raindrops that fall to Earth from a warm cloud contain about one million times the water in a typical cloud droplet. read more