M.D. Medical Director, Psychiatrist
October in Portland is fine. October is arguably the point of Portland.
The rain comes back, the light goes gold and low, the trees do their thing, and there’s a genuine pleasure in the first week where a raincoat is required. People post about it. Nobody is struggling in October.
The trouble starts somewhere in the third week of November, when it becomes apparent that this is not a season with a texture but a condition with a duration. And it goes on until roughly March.
What actually causes it
Portland’s problem isn’t rainfall. Several American cities get more rain. What the Willamette Valley has is persistence — a long stretch from November through February where the cloud deck rarely breaks, the light stays flat all day, and the sun sets before 4:30 in the afternoon around the solstice.
If you work indoors on a standard schedule, that arithmetic is unforgiving. You leave the house under a gray sky. You spend the productive hours inside. You come out into the dark. It’s entirely possible to go a full week in January without being outdoors in meaningful daylight.
That matters because daylight exposure is what sets your circadian rhythm — the internal clock governing sleep, alertness, appetite and mood. Without a strong morning light signal, that clock drifts. Melatonin production shifts later. You end up tired at the wrong times, awake at the wrong times, and flat in between.
This is a physiological process, not a failure of attitude.
How it actually shows up
Seasonal affective disorder is major depression with a seasonal pattern — symptoms beginning in fall, deepening through winter, and lifting in spring. The winter presentation often looks different from what people expect from depression:
- Sleeping noticeably more and still waking tired
- Strong cravings for carbohydrates, and weight gain across the winter
- Heavy, leaden fatigue — the sense that everything costs more to do
- Pulling away from people you genuinely like
- Losing interest in things that were easy to want in July
- Concentration problems that usually show up at work first
The pattern is what matters. One hard winter is a hard winter. The same decline at the same time of year across multiple winters, with real recovery in spring, is a seasonal pattern worth treating. Our explainer on seasonal affective disorder symptoms and causes covers the mechanism in depth.
The Portland-specific problem: everyone’s fine with it
There’s a local cultural expectation that you’re supposed to be unbothered by this. Real Portlanders don’t own umbrellas. We joke about the rain and then go for a run in it. Complaining marks you as a transplant.
That’s mostly harmless and occasionally corrosive, because it makes the difference between weather-tolerant and unwell hard to talk about. If everyone around you is treating five months of low light as a personality quirk, the reasonable conclusion when you can’t get out of bed in February is that you’re weak.
You’re not. Somewhere between a noticeable share of the population finds winter genuinely difficult, and a meaningful subset of those meet criteria for a treatable depressive episode. The fact that your coworker is fine is not evidence about you. Circadian sensitivity varies enormously between people, and it isn’t a measure of character.
What actually helps
Light therapy. A 10,000-lux light box used within an hour of waking, for roughly 20 to 30 minutes, positioned off to one side rather than stared into, is the first-line behavioral treatment for seasonal depression and has decent evidence behind it. Consistency beats duration — every morning from late October is worth far more than an hour here and there in January. One important caution: if you have bipolar disorder or any history of mania, bright light can destabilize mood and should only be used under clinical supervision.
Get outside in the morning anyway. Fifteen minutes outdoors on an overcast Portland morning still delivers substantially more light than an office does all day. It feels pointless. It isn’t.
Build the structure in October. The single most effective pattern we see is people who set up their winter scaffolding before they need it — the standing workout, the weekly dinner, the Saturday morning commitment that gets them out of the house. Constructing that in February, from inside the hole, is much harder than maintaining something that already exists.
Watch the sleep drift. Winter tempts everyone into sleeping later on weekends, which shifts your clock further and makes Monday worse. A consistent wake time, even on Saturday, is one of the more underrated interventions available.
Medication, when the pattern is established. Antidepressants are effective for seasonal depression, and for a well-documented annual pattern some patients start before symptoms arrive rather than after. That’s a conversation with a psychiatric provider. See our medication management page.
TMS, when medication hasn’t worked. For depression that hasn’t responded adequately to two or more antidepressant trials, TMS therapy is an FDA-cleared option that works without medication at all — about 20 to 40 minutes a session, five days a week for four to six weeks, no sedation and no recovery time. Who qualifies for TMS covers the criteria, and esketamine (SPRAVATO) is a further option for depression that hasn’t responded to either.
When to stop waiting it out
The most common mistake is treating winter as something to endure and then re-evaluating in spring — at which point the symptoms lift on their own, the question feels moot, and the same thing happens next November.
Get evaluated if this is your second or third winter with the same decline, if what you’ve tried on your own hasn’t shifted anything by mid-November, if your sleep or appetite has changed substantially, or if work and relationships are taking a visible hit. If you’re having thoughts of harming yourself, that’s today rather than eventually.
Late October is the right moment for this call. Not because anything is urgent now, but because the version of you who exists in mid-January will find it much harder to make.
Getting care in Portland
BestMind’s Portland clinic is at 13535 SW 72nd Avenue, Suite 170, serving Portland, Tigard, Lake Oswego, Tualatin, West Linn and Sherwood, with surface parking and no downtown garage involved. Hours are Monday through Friday, 8:00 a.m. to 5:00 p.m.
We offer psychiatric medication management, TMS therapy including accelerated TMS, esketamine (SPRAVATO), ADHD testing and telehealth. Most major Oregon plans are accepted — the current list is on our insurance page. If you’re on the east side, our Northeast Portland clinic may be closer.
Call (971) 300-0654 or request an appointment through our Portland scheduling page. Full details and directions are on the Portland location page.
The gray is going to do what it does. What happens to you in it is more adjustable than it feels in February.
If you are in crisis, call or text 988 to reach the 988 Suicide & Crisis Lifeline, available 24 hours a day.
Frequently Asked Questions
Why is seasonal depression so common in Portland?
It’s the persistence rather than the rainfall. From November through February the Willamette Valley sits under a largely unbroken cloud deck, the light stays flat all day, and the sun sets before 4:30 p.m. around the solstice. People who work indoors can go a week in January without meaningful daylight exposure, which disrupts the circadian rhythm that governs sleep, energy and mood.
When does seasonal depression usually start in the Pacific Northwest?
Symptoms typically build through November as daylight shortens, deepen through midwinter, and lift in spring. October usually feels fine, which is part of why people are caught off guard — the difficult stretch tends to begin in the second half of November.
Is seasonal affective disorder a real diagnosis?
Yes. It’s recognized as major depression with a seasonal pattern rather than a separate illness. The winter presentation often involves oversleeping, carbohydrate cravings, weight gain and heavy fatigue, where non-seasonal depression more often brings insomnia and appetite loss.
Do light therapy lamps work for Portland winters?
For many people, yes. The standard approach is a 10,000-lux light box used within an hour of waking for about 20 to 30 minutes, placed off to the side rather than looked at directly. Daily consistency matters more than session length. Anyone with bipolar disorder or a history of mania should use light therapy only under clinical supervision.
How do I know if it’s seasonal depression or just disliking winter?
The test is impairment and pattern. Disliking winter means preferring summer while still functioning. Seasonal depression means most days for at least two weeks with work, relationships or basic self-care affected, recurring at the same time of year across multiple winters with genuine recovery in spring.
What if light therapy and exercise haven’t helped?
Those are real interventions and they are not sufficient treatment for major depression. If you’ve done them consistently and nothing has changed, that’s clinical information rather than a personal failing. Antidepressant medication is effective for seasonal depression, and for depression that hasn’t responded to two or more medication trials, TMS therapy is an option that doesn’t rely on medication.
Where can I get treated for seasonal depression in Portland?
BestMind Behavioral Health is at 13535 SW 72nd Avenue, Suite 170, serving Portland, Tigard, Lake Oswego, Tualatin, West Linn and Sherwood, Monday through Friday from 8:00 a.m. to 5:00 p.m. A Northeast Portland clinic is also available for east-side patients. Call (971) 300-0654.
