<p>This study aims to explore the single and joint contributions of temperament and family functioning to subjective happiness in emerging adulthood. A sample of 332 Spanish college students completed measures of temperament, family functioning and subjective happiness. Results revealed that resilient and reserved temperaments showed higher levels of subjective happiness than those which were non-desirable. Regarding family functioning, students who live in healthy families showed higher levels of subjective happiness than those in unbalanced family systems. Finally, the resilient, reserved and non-desirable temperament profiles varied significantly in their contribution to subjective happiness depending on the family profile of the student. Overall, results provide new knowledge regarding the contribution of both temperament and family functioning to the subjective well-being of young people.</p>