This overlap of transition fatigue, sleep disruption, and environmental contrast creates the experience many people describe as post-vacation depression. How Long Post-Vacation Blues Typically LastsFor most people, post-vacation low mood is generally temporary and may ease as a person readjusts to their everyday responsibilities and routine. Frequently Asked QuestionsIs post-vacation depression a real thing? Gradual reentry, preserved vacation habits, planned near-future events, and processing the trip experience all reduce the severity of post-vacation low mood. When post-vacation low mood persists beyond two weeks, worsens, or points to chronic dissatisfaction that existed before the trip, professional evaluation is appropriate.