There is an art to being able to walk in the rain and not get wet. Maybe art isn’t the best word. It’s science. Science and technique. Technique and skill. Techni-skill.
The technique is based on vibration. As we know, everything is vibrating, even rocks. When things vibrate slowly, they appear to be solid. Knock a rock on your skull and you’ll appreciate this apparent solidity. Gases vibrate rapidly. You can pass your hand through gas easily.
Some people have mastered the ability to modulate the vibration of their entire body, raising it or lowering it at will. At just the right vibration they can walk through rain without getting wet.
It can be tricky, though. If you raise your vibration too much a stiff wind could disperse you like a puff of smoke.