I just watched the latest Net-juu no Susume and there's the stereotypical caught-in-the-rain scene, and then usually accompanying shower scene. Since this anime makes a point to be more similar to the real world than others, it made me wonder if this sort of thing actually happens in Japan. I recognized the trope from anime, but in researching this question, it seems that it's also common in other mediums.
Is the rain that cold over there? Do people usually take showers at other people's houses after a downpour takes them by surprise?