It's 5:30 p.m., the sun has already set, and suddenly your brain is convinced the day is over.
You still have laundry to fold, emails to answer, dinner to figure out, and approximately 47 other things you've been meaning to do. But somehow, getting off the couch feels like an impossible task.
Sound familiar?
For some adults with ADHD, the transition into fall and winter can bring an unexpected shift in energy, motivation, mood, and the ability to keep up with everyday responsibilities.
Maybe you're having a harder time getting out of bed. Maybe the routines you finally established over the summer are starting to fall apart. Or maybe you're wondering why tasks that felt manageable a few weeks ago suddenly seem so overwhelming.
And if you're already someone who struggles with executive functioning, these changes can be particularly frustrating.
But here's the thing: It's not necessarily that your ADHD is getting worse.
Changes in daylight, sleep, routines, and even mood can influence how we feel and function. And there's actually some interesting research connecting ADHD, our internal body clocks, and seasonal changes.
So, let's talk about it.
Your Brain Didn't Get the Memo About the Time Change
Twice a year, we collectively agree to change our clocks (except the microwave, because apparently that's a whole separate project) and then act surprised when our bodies don't immediately cooperate.
And while gaining an extra hour of sleep sounds great in theory, adjusting to a change in routine isn't always that simple.
Especially when ADHD is part of the picture.
Here's where things get interesting.
Research has found that people with ADHD are more likely to experience differences in their circadian rhythms, which is basically the fancy term for our internal body clocks.
These rhythms help regulate when we feel awake, when we feel sleepy, and how our bodies respond to light and darkness.
In fact, a research review by Coogan and McGowan (2017) found that ADHD is associated with later sleep patterns and a greater tendency toward being a night owl.
So, if you've spent your entire life wondering why your brain suddenly decides 10 p.m. is the perfect time to become productive, there might actually be something to that.
But does that mean the time change automatically makes ADHD worse?
Nope. We don't have enough research to say that.
What we do know is that sleep and circadian rhythm differences are common in ADHD. And when your sleep, routines, and energy are already a little unpredictable, seasonal changes can add another layer of frustration.
Sometimes it's not about your ADHD suddenly becoming more severe. It's about the things happening around your ADHD.
And that distinction matters.
When It's Dark Outside, but Your To-Do List Isn't Done
There's something particularly frustrating about looking outside at 6 p.m. and feeling like the entire day has disappeared.
Logically, you know you still have several hours before bedtime.
But mentally? You've already clocked out.
Maybe you usually take a walk after work, but now it's dark by the time you're finished. Maybe you relied on that little bit of evening sunlight to get yourself moving. Or maybe the colder weather has made your couch and a blanket significantly more appealing than whatever you originally planned to accomplish.
And honestly? Fair.
But when you have ADHD, even small changes to your environment or routine can create some unexpected challenges.
That after-work walk might have been helping you transition out of work mode. Having daylight left might have made it easier to start certain tasks. And now, without necessarily realizing it, you've lost a few of the things that were helping your days run a little more smoothly.
Of course, not everyone's brain gets the memo that we're supposed to wind down when the sun goes down.
For some adults with ADHD, nighttime is actually when they feel most productive. The house is quiet, the demands of the day have slowed down, and suddenly they can focus on things they've been putting off for hours.
And honestly, that makes sense, too.
ADHD doesn't look the same for everyone. Some people struggle when the days get shorter, while others find that the quieter evening hours make it easier to focus. And sometimes, you might experience a little of both.
The point isn't that darkness automatically kills motivation. It's that changes in daylight, routines, and our environments can influence how we feel and function in different ways.
Still, when things start feeling harder, it's easy to interpret that as a personal failure.
Why am I suddenly so unmotivated?
Why can't I keep up with anything?
I was doing so well, what happened?
But sometimes the answer isn't that you've lost your motivation or discipline.
Sometimes your circumstances have changed, and the routines that worked in July just don't work quite the same way in November.
That doesn't mean you failed at maintaining them.
It means you might need something different right now.
Is It ADHD, Seasonal Depression, or Am I Just Exhausted?
Okay, here's another interesting piece of this whole seasonal puzzle.
Researchers have also found connections between ADHD symptoms and seasonal changes in mood.
For example, a study by Wynchank and colleagues (2016) found an association between significant ADHD symptoms and screening positive for seasonal affective disorder (SAD). More recent research has also identified associations between ADHD traits and seasonal changes in mood and behavior.
Does that mean everyone with ADHD is destined to feel miserable when winter rolls around?
Absolutely not.
But it does raise an interesting question about how sleep, mood, and ADHD might interact.
Because let's be real, some of these experiences can look pretty similar.
Difficulty concentrating? Familiar.
Struggling to get started on things? Yep.
Feeling exhausted, overwhelmed, unmotivated, or like you want to disappear under a blanket for the foreseeable future?
Yeah, that one can get a little complicated.
ADHD, depression, sleep difficulties, and prolonged stress can all affect our energy and ability to function. And sometimes more than one thing is happening at the same time.
Seasonal affective disorder is a form of depression that follows a recurring seasonal pattern, often involving persistent changes in mood, energy, sleep, or interest in activities.
And while many adults with ADHD describe periods of intense exhaustion as "ADHD burnout," that term isn't a separate formal diagnosis. It's often used to describe the very real experience of feeling depleted from trying to keep up with everyday demands.
The point isn't that you need to figure out exactly which category every difficult day belongs to.
But if you've noticed a significant shift in how you're feeling, especially if it's lasting or interfering with your daily life, it might be worth getting curious about what's going on rather than automatically chalking it up to ADHD.
Sometimes there's more to the story.
Maybe You Don't Need Another Productivity Hack
Before we go any further, I promise I'm not about to tell you to wake up at 5 a.m., buy a new planner, or create an elaborate morning routine.
Because sometimes the last thing someone with ADHD needs is another list of things they're supposedly doing wrong.
Instead, what if we approached this a little differently?
What if, rather than immediately trying to fix your motivation, you got curious about what might be making things harder?
Maybe your evenings feel shorter, so moving a few responsibilities earlier in the day could help.
Maybe you've been sleeping differently, and getting some daylight earlier in the day or maintaining a more consistent sleep schedule is worth experimenting with.
Maybe the routines that worked during the summer need a little tweaking.
Or maybe you're genuinely exhausted and what you need isn't another productivity strategy.
Maybe you need rest.
And I know, for a lot of adults with ADHD, that can be easier said than done.
Especially when rest comes with a side of guilt about everything you could or should be doing instead.
But supporting your executive functioning doesn't always mean finding ways to squeeze more productivity out of yourself.
Sometimes it means recognizing what isn't working, adjusting your expectations, and giving yourself permission to do things differently.
There's a difference between supporting yourself and creating another set of rules to feel bad about not following.
You Don't Have to Function the Same Way in Every Season
One of the frustrating things about ADHD is how quickly a difficult stretch can turn into a whole lot of self-criticism.
You miss a few things on your to-do list, struggle to get out of bed, or spend an evening doing absolutely nothing “productive,” and suddenly your brain starts building a case against you.
Why can't I just get it together?
I was doing so well a few weeks ago.
Everyone else seems to be managing just fine.
But here's the thing.
Functioning isn't always consistent, even when you're doing everything "right."
Sleep changes. Stress changes. Routines change. Our physical and emotional needs change.
And yes, the seasons change, too.
We're still learning about the relationship between ADHD and seasonal changes, and not everyone with ADHD experiences a fall or winter slump.
But if you've noticed things feeling a little harder lately, maybe it's worth approaching that experience with curiosity instead of criticism.
Maybe you need to adjust a routine. Maybe you need additional support. Maybe there's something else contributing to how you're feeling.
Or maybe it's been a long week, it's dark outside, and you're tired. All valid.
Not every difficult day needs to become a self-improvement project.
Sometimes understanding what's happening, giving yourself a little grace, and making room for your needs is enough.
And if things have been feeling consistently overwhelming, you don't have to figure it all out on your own.
At Imperfect Human Counseling, I work with adults navigating ADHD, burnout, anxiety, and the exhausting experience of trying to keep up with a world that doesn't always work with their brains.
Therapy isn't about becoming perfectly productive or learning how to push through every difficult season. It's about understanding yourself, finding support that actually fits, and making room for being human.
Learn more about ADHD therapy at Imperfect Human Counseling.
References & Further Reading
Coogan, A. N., & McGowan, N. M. (2017). A systematic review of circadian function, chronotype and chronotherapy in attention deficit hyperactivity disorder. ADHD Attention Deficit and Hyperactivity Disorders, 9, 129–147.
https://doi.org/10.1007/s12402-016-0214-5
Wynchank, D. S., et al. (2016). ADHD, circadian rhythms and seasonality. Journal of Psychiatric Research, 81, 87–94.
https://pubmed.ncbi.nlm.nih.gov/27423070/
Jo, Y., et al. (2025). Seasonal changes in mood and behaviors in individuals with attention-deficit/hyperactivity disorder trait. Journal of Psychiatric Research.