How long does post-holiday depression last?

In most cases, the discomfort fades within a week or two, as your body and mind readjust to their usual rhythm. If after that time you still feel intense sadness, insomnia, listlessness or anxiety that keeps you from functioning, it's no longer simple adaptation and it's worth talking it through.

Is post-vacation syndrome the same as depression?

No. Post-vacation syndrome is a passing adaptation process tied to the change of routine. Depression is a deeper, more sustained clinical condition. Sometimes, though, the return to routine acts as a trigger that uncovers a discomfort that was already there; that's why it's helpful to listen to it rather than ignore it.

When should I seek professional help?

When the slump drags on for weeks, isolates you, persistently affects your sleep or your work, or when you notice you repeat the same pattern of distress every September. Asking for guidance isn't being dramatic: it's giving yourself the chance to understand what that discomfort is asking of you. I'm here to walk alongside you.

Post-holiday depression: why the return to routine in September drags your mood down

By Alejandro Cabeza · Health Psychologist (Reg. no. M-37719) Updated on June 22, 2026

Person looking out the window with a tired expression as they head back to routine in September

September arrives, you put away your suitcase and, instead of the relief of "getting back to normal," you feel a strange weight in your chest. You struggle to sleep, you snap at the smallest thing, Monday feels twice as heavy, and you think: "what's wrong with me, when nothing bad has even happened?". You're not overreacting and you haven't gone lazy. That dip in mood when you pick the routine back up has a name and, above all, an explanation. In this article I'll tell you why September hits so hard and how to prepare for the transition so it doesn't drag you down.

What post-holiday depression is (and what it isn't)

First, an important clarification: post-holiday depression isn't, strictly speaking, a clinical depression. It's an adaptation-related discomfort that shows up when you go straight from a free, rested, schedule-free pace to the demands of routine. That's why many professionals prefer to talk about post-vacation syndrome or, simply, the September slump.

It usually lasts from a few days to two weeks, and it shows up as sadness, low energy, irritability, sleep problems, trouble concentrating and a sense of reluctance toward tasks you used to do without a second thought. It's not a flaw in your character: it's your nervous system asking for time to recalibrate.

It's worth telling apart: if that discomfort drags on for weeks, isolates you, robs you of sleep in a sustained way or appears with no connection to the holidays, we're no longer talking about adaptation and it deserves a professional's eye. September can be the visible trigger of something that had been quietly building for a while.

Why September hits so hard

It's no coincidence that your mood plummets right now. During the holidays your stress hormones drop, you catch up on sleep and you do things for pleasure, not out of obligation. When you go back, the contrast is brutal: your body, which had grown used to calm, gets hit once again with the surge of cortisol that comes with schedules, deadlines and responsibilities. That chemical shock explains much of the feeling that you can't keep up with everything.

On top of this comes the symbolic weight of September. Culturally it's a second January: the school year begins, so do the resolutions and the gym memberships. It arrives loaded with expectations and a sense of taking stock of your life. And when you go back to your routine, you also go back to whatever the holidays had distracted you from: a job that doesn't fulfil you, a tense relationship, a loneliness that summer was covering up.

That's why the return doesn't unsettle everyone the same way. If your day-to-day is reasonably aligned with what you want, September is just a formality. If your routine means going back to something that wears you down, the slump isn't about the holidays: it's the routine that was trying to warn you.

When the slump points to something deeper

Sometimes the return to routine uncovers wounds that have nothing to do with the calendar. If every September you carry a disproportionate anguish, perhaps what's resurfacing is an old pattern: the fear of not performing well enough, the sense that your worth depends on producing, or an emptiness that rest makes audible again. When that pattern is rooted in unresolved painful experiences, working on it through an approach like EMDR therapy helps those wounds stop flaring up with every change of stage.

It's also common for the return to activate relational dynamics. You find yourself back in a tense living situation, you pick up contact again with someone who drains you, or you notice you only feel good when you're away from your day-to-day. When the discomfort revolves around your bonds, it's worth looking at where it comes from: the way you learned to relate and to depend on others matters more than it seems, and topics like attachment and emotional dependence tend to surface right at these changes of stage.

Listening to that slump instead of silencing it with coffee and a packed schedule is, very often, the first act of real care toward yourself.

How to prepare for the transition step by step

✓ Come back with a buffer: leave a day or two of cushion between the holidays and the routine; don't land on Sunday night to get up early on Monday.
✓ Recover your sleep gradually: move your bedtime forward 15-20 minutes a night in the days beforehand instead of making the change all at once.
✓ Ease back in phases: in the first few days, prioritise the essentials and resist the temptation to clear your whole to-do list on day one.
✓ Keep an island of pleasure: hold on to one of the activities you enjoyed in summer (a walk, reading, meeting up) within your working week.
✓ Keep your focus short: set yourself small, achievable goals this week, not yearly resolutions that only add pressure.
✓ Look after your body: gentle movement, natural light in the morning and regular meals steady your mood more than you'd think.
✓ Name what you feel: putting the discomfort into words (tiredness, fear, reluctance, sadness) takes the edge off it and helps you not confuse it with who you are.

How therapy helps

When the September slump comes back every year or uncovers something deeper than a simple change of pace, working on it with support makes a difference. In session we don't aim to cover up the discomfort, but to understand what it's asking of you: which part of your routine wears you down, which old wounds get reactivated and what you need to change so that coming back stops costing you so much.

Through individual therapy we put your feelings into words, identify the patterns that keep repeating and build concrete resources to navigate these changes of stage with more calm. Let me be clear: therapy guides and accompanies, it doesn't replace a clinical assessment if your discomfort is intense or persistent, nor do I promise you magic solutions. What I do offer is a safe space to understand yourself and move forward at your own pace. I'm here to walk alongside you.

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You don't have to get through September with your mood switched off

The return to routine has left you with a weight that won't lift, and we can look together at what's behind it. I'm here to help you recover your balance and understand what that discomfort is trying to tell you. Write to me and we'll take the first step.

Book your session

This article is for informational purposes only and does not replace personalized psychological care. If you think you need help, you can book a session. If you are in a crisis situation, call 024 (suicide helpline in Spain) or 112.