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As the days get shorter and the nights grow longer, many of us feel a bit sluggish or moody during the colder months. But for some people, these seasonal shifts lead to more than just a case of the winter blues. If you’ve noticed a recurring pattern of low mood, low energy, or a loss of interest in things you usually enjoy—especially during autumn and winter—you may be dealing with Seasonal Affective Disorder (SAD).
Let’s break down what SAD is, how to spot the signs, and—most importantly—what you can do to feel more like yourself again.
What is Seasonal Affective Disorder?
Seasonal Affective Disorder is a type of depression that follows a seasonal pattern—typically beginning in late autumn or early winter and improving in spring or summer. While the exact causes aren’t fully understood, it’s believed that the reduced exposure to sunlight during the colder months can affect our body’s internal clock (circadian rhythm), serotonin levels (which affect mood), and melatonin levels (which influence sleep).
Research suggests that people with SAD may produce more melatonin (which makes you feel sleepy) and less serotonin (which helps regulate mood) during the darker months. The lack of sunlight can also disrupt your circadian rhythm—your body’s natural body clock—which can leave you feeling tired, out of sync, and low in mood. These biological changes help explain why SAD is more than just a seasonal dip in motivation—it’s a condition with clear physical and neurological underpinnings.
SAD isn’t just “winter sadness”—it’s a genuine mental health condition that can significantly impact your day-to-day life, relationships, and wellbeing.
Signs and Symptoms of SAD
People with Seasonal Affective Disorder often experience a mix of physical, emotional, and behavioural symptoms. Here are some common ones to look out for:
Persistent low mood or sadness
Loss of interest or pleasure in activities you normally enjoy
Fatigue or low energy—even after a full night’s sleep
Changes in sleep patterns (often sleeping more than usual)
Changes in appetite, especially craving carbohydrates and gaining weight
Difficulty concentrating
Feelings of hopelessness, worthlessness, or guilt
Withdrawal from social activities
Increased irritability or sensitivity to stress
If these symptoms appear around the same time each year and improve as the seasons change, it’s worth having a conversation with your GP or a mental health professional.
Not sure if it’s SAD? Book a chat with one of our psychologists.
Is it SAD or Something Else?
Not every dip in mood during winter is necessarily Seasonal Affective Disorder. It’s common to feel a bit off when the weather’s grey or you’re stuck inside more often—but if your symptoms are intense, persistent, and return every year in a clear pattern, it may be SAD. It’s also important to rule out other causes of low mood, such as major depression, burnout, or certain physical health conditions like aneamia or thyroid problems. A healthcare provider can help assess what’s going on and guide you toward the most appropriate support.
Who Is at Risk?
SAD can affect anyone, but there are a few factors that may make someone more vulnerable:
Living far from the equator – People in regions with long winters and reduced sunlight are more likely to experience SAD.
Family history – If depression or other mood disorders run in your family, your risk may be higher.
Age – SAD is more commonly diagnosed in younger adults, though it can affect people of all ages.
Gender – Women are more likely to be diagnosed with SAD, although men may experience more severe symptoms.
In Australia, while we don’t experience the long, dark winters that are typical in places like Scandinavia or Canada, people in the southern states—such as Victoria and Tasmania—do report higher rates of SAD than those living closer to the equator. Interestingly, people who’ve moved from tropical climates to cooler regions may notice SAD symptoms more acutely because their bodies haven’t adapted to the seasonal shifts. Even office workers who spend little time outside during daylight hours can be at risk, regardless of geographic location.
Feeling the seasonal shift? We’re here if you need support.
How Is SAD Diagnosed?
There’s no specific test for SAD, but a diagnosis is typically made based on your symptoms, their timing, and how they affect your life. A healthcare provider may ask you to track your mood and sleep patterns over several weeks to identify seasonal trends. It’s also important to rule out other causes, such as thyroid problems or other forms of depression.
Practical Ways to Manage Seasonal Affective Disorder
The good news? There are lots of effective strategies to help you manage SAD and feel better throughout the darker months. Here are a few evidence-based tips:
1. Light Therapy
Light therapy—also called phototherapy—is one of the most common and effective treatments for SAD. It involves sitting near a special light box that mimics natural sunlight, typically for about 20–30 minutes each morning. Most people start to feel a difference within a week or two.
Tip: Make sure to use a clinically tested light box that emits at least 10,000 lux and blocks UV rays. Always speak with a healthcare provider before starting light therapy to ensure it’s safe for you.
2. Get Outside When You Can
Even on cloudy days, natural light can help regulate your internal body clock and boost your mood. Try to spend some time outdoors each day—especially in the morning—or position yourself near windows to soak up as much natural light as possible.
3. Stay Active
Regular physical activity is one of the best natural mood-boosters. It helps release endorphins and can improve energy levels, sleep, and self-esteem. You don’t need to run a marathon—even a brisk daily walk can make a big difference.
4. Eat Well (Think Mediterranean)
A balanced diet can help stabilise your mood and energy. Aim to eat plenty of fruits, vegetables, whole grains, and lean proteins. There’s also growing evidence that the Mediterranean diet—which is rich in healthy fats like olive oil and omega-3s—may reduce symptoms of depression.
The SMILES trial, an Australian study, found that people with major depressive disorder who followed a Mediterranean-style diet significantly improved their symptoms over 12 weeks. It’s well worth a look if you’re curious about how diet and mood are connected.
5. Use Technology Mindfully
While it’s tempting to hibernate with a screen during colder months, too much time online can sometimes worsen low mood. Apps like MindDoc, Daylio, or Headspace can help you track your mental health, stay mindful, and build healthy habits.
For a targeted option, the Lumenate app offers guided light-based journeys designed to help shift your mindset and support mental wellbeing. It uses flickering light patterns (via your phone’s flashlight) to promote relaxation and reflection—perfect for winding down or finding calm during gloomy days.
6. Connect With Others
It’s easy to feel isolated when it’s dark and cold outside, but connection is key to emotional wellbeing. Try to keep up with regular social activities—even if it’s just a coffee catch-up, phone call, or quick text to check in with a mate.
7. Stick to a Routine
Our bodies thrive on routine—especially when it comes to sleep and exposure to light. Try to wake up and go to bed at roughly the same time each day, even on weekends. Schedule your outdoor time, meals, movement, and social activities into your day so you have regular things to look forward to. This helps reinforce your body’s internal clock and can make the colder months feel more manageable.
8. Talk to a Professional
Sometimes, self-help strategies aren’t enough. If you’re struggling, consider speaking with a clinical psychologist or mental health professional. They can work with you to develop personalised strategies, explore therapies like Cognitive Behavioural Therapy (CBT).
Cognitive Behavioural Therapy (CBT), particularly a variation called CBT-SAD, is a structured, evidence-based treatment designed to help people identify and shift negative thought patterns and behaviours related to the seasons. For instance, therapy might explore unhelpful thoughts like “Winter always ruins my life” or avoidance behaviours like withdrawing from social plans. A psychologist will help you set realistic goals, develop a daily routine, and build resilience strategies. Medication may also be considered if symptoms are severe or persistent, and this can be discussed with your GP or psychiatrist.
MindBox Psychology offers in-person and Telehealth sessions across Australia, and our team includes experienced clinicians who can support you with SAD and other mood concerns.
Quick Recap: Simple Ways to Beat the Winter Blues
- Use a light therapy box each morning
- Spend time outdoors or near a window
- Get moving every day
- Eat a balances, Mediterranean-style diet
- Monitor your mood with apps like Daylio or Headspace
- Stay connected with friends and loved ones
- Stick to a regular routine
- Consider therapy if you need extra support
Need a safe space to talk?
We’re here to help. Contact MindBox Psychology today to book a session in Sydney or via Telehealth across Australia. You don’t need to go through this alone—support is just a call or click away.
