It's a shame when you can no longer read the addresses on parcels and letters in rain and snow. With this tip, that won't happen anymore:
Addresses no longer blurred
Adhesive tape
Next time, simply stick transparent adhesive tape over it.
Candle wax
Another option is to rub the end of a white candle over the text. The wax layer causes the water to bead off.
Read also: Giving flowers as a gift via a flower delivery service
Photo by Sabine, meinhaushalt.at