Previous studies upon radio listeners' behaviors attempts to describe the relationships between motivations and listening behaviors. Based on the factors of situation in Dervin's sense-making theory and Belk's situation constructs, this study attempts to explore the interactions between radio listeners' behaviors and their listening motivations by anchoring their behaviors on a specific point of time, space and social surrounding. Results indicate a significant interaction between motivation and situation. Situation is an important and valid predictive variable for radio listeners' behaviors and motivation.