Swiss Italian broadcaster RTSI was in charge of broadcasting the selection for the Swiss entry for the 1984 Contest. The national final was held at the RTSI studios in Lugano, hosted by Ezio Guidi and Natascha Giller. Nine songs were submitted for the 1984 national final and the winning song was submitted by 3 regional juries (DRS, TSR, TSI), a press jury, and an expert jury. Unusually, the votes from the regional juries were combined as one result, whose points were allocated based on the total amount of points each song received from the said juries, and the points from the other juries were added on from there.
On the night of the contest Rainy Day performed 17th, following Finland and preceding Italy. At the close of the voting Switzerland had picked up 30 points (The highest mark awarded was 10 points from the United Kingdom) placing Switzerland in 16th place out of 19 entries. The Swiss jury awarded its 12 points to Ireland.