Abstract: The invention relates to a device for fastening a rain sensor (3) to a support. Said device comprises a base (1) that is provided with an adhesive on the side facing the support for fastening it on the support, two lateral webs (6, 7) aligned in a substantially perpendicular manner in relation to abase plate (8) of a base (1), two opposite neck webs for fixing a neck section (5) of the main sensor (3) and two tilted lateral tongues (9, 10) for fixing a spheroid top section (4) of the rain sensor (3). The device is provided with a cover part (2) which comprises edge webs that can be engaged with the lateral webs (6, 7) of the base (1) and a resilient spring tongue (12) that is biased and rests against the top section (4) of an interposed rain sensor (3). The inventive device has an especially compact and esthetically appealing design and allows for a comparatively high contact pressure.