Or you could wear waterproof clothing. Where I am in Europe I don't see too many umbrellas. They have a saying here: "There is no bad weather, just bad clothing".
I have yet to see waterproof clothing that fulfils 2 criteria which umbrellas easily do:
- Your face and hands don't get wet, even when the rain is blowing sideways. (Coat-only waterproofing also leaves you with wet jeans and shoes.)
- You don't get basically just as wet anyhow on account of sweat being trapped inside the clothes. (Even "breathable" stuff traps sweat when its outside is slick with water.)