The direction of the magnetic field around a current-carrying wire is given by the right-hand rule. Point your right thumb in the direction of the conventional current (positive to negative). Your curled fingers show the direction of the magnetic field lines, which form concentric circles around the wire.

In the image, the current is flowing to the right. At point P, located above the wire, the magnetic field direction is into the page. This is determined by the right-hand rule: with your thumb pointing right, your fingers curl into the page above the wire.

Final Answer: into the page