Waterbane

 (Adaptation of 2e Al-Qadim spell)

This spell keeps the caster, another being, or an object from getting wet. It offers protection against water in liquid form, saltwater as well as fresh. It does nothing against corrosive acids and poisons, however, even when they're diluted in water. Further, the spell has no effect, either good or bad, upon creatures from the Elemental Plane of Water.
A living recipient can walk through a pouring rain, dive into a pool, or stand beneath a waterfall, and he'll still emerge with dry clothing and every hair in place.
The spell does not prevent drowning. Nor does it enable the recipient to breathe underwater or swim if they could not do so before. It does, however, keep the recipient and everything on them dry for one day.
When cast upon an object, Waterbane renders it completely watertight for one day per level of the caster. For instance, a grain barrel protected with Waterbane can be cast into the sea, and then wash ashore several days later with its contents completely dry.
The material components of this spell are a bit of wax and some paper.

(A useful spell if you forget your umbrella, or just want to show off as a mage!)