Front door of property


I don't know if anyone else is faced with this problem, but our front door faces the direction of all the heavy rain we have from time to time. I mean when it comes down diagonally or horizontally at its heaviest. The trouble is the rain acts lie a full on hose being pointed at the door and comes underneath, and even manages to get inside the key hole and hinges. Apart from the expense of erecting a mini conservatory/porch, does anyone face a similar problem - any ideas how to improve the situation?