Use the adjective temporary to describe something that is not permanent. "Oh my goodness! That's a tattoo," your mother might shriek. You might tell her not to worry, since it's only temporary, and will wear off in a few days.
The adjective temporary is used to describe something that isn't permanent or lasts only a short time. Its roots are in the Latin word tempus, meaning "time or season." An employee who isn't a permanent addition to the staff is temporary and in this use, the word is often shortened to temp. The lull in the wind and rain is only temporary, because you know you are in the eye of the storm.