In accordance with one aspect of the present disclosure, there is provided an apparatus for detecting rain using a wire mesh sensor including: a wire mesh which is configured to include a plurality of transmitters and a plurality of receivers; and a fixing part for fixing the wire mesh; wherein the plurality of transmitters supply electricity to the wire mesh, and wherein, in response to rain being positioned between a specific transmitter among the plurality of transmitters and a specific receiver among the plurality of receivers, the specific receiver is configured to receive the electricity from the specific transmitter and then transmit the electricity to a measuring part, to thereby allow the measuring part to measure conductivity. This hemispherical apparatus can detect rain accurately by making the incident angles of the rain to be vertical regardless of the directions of the rain.