When the Sun Takes a Vacation: -Early December-Seasonal Affective Disorder (SAD) Explained

The Sun Checked Out—Did Your Mood Follow?

Welcome to early December—a time when many regions around the world experience short days, long nights, chilly weather, and a sudden need to carry an extra layer everywhere “just in case.” While some cultures are gearing up for year-end celebrations and others are slowing down for winter, one thing many of us share is the moment we look outside at 4:30 PM and think: “Wait… why is it already dark?” 

For many people, this period also marks the rise of Seasonal Affective Disorder (SAD)—a mood shift influenced by the reduced daylight of late fall and early winter. If you find yourself more tired, less motivated, craving carbs, or feeling emotionally “heavy” around this time, you’re far from alone. 

Why Early December Hits Hard Across Different Climates and Cultures 

Shorter daylight hours affect the brain in a surprisingly universal way. With limited sunlight exposure, serotonin (your mood booster) decreases, melatonin (your sleep signal) increases, and your body starts acting like it’s preparing for deep hibernation—even if your schedule is busier than ever. 

Depending on where you live, December may mean: 

• Cold weather and snow 

• Rainy, overcast days 

• Dry winds and early sunsets 

• Or even hot temperatures but drastically shorter daylight Regardless, the reduced sunlight is enough to create a biological shift. 

  
  

And since this season often comes with year-end obligations, travel, cultural celebrations, social expectations, or financial stress, SAD symptoms can easily blend with—or intensify—seasonal pressures. 

Early December Symptoms: More Than Just “End-of-Year Tiredness”

People often mistake SAD for general fatigue, “winter blues,” or stress. But it can look like: 

• Lower mood or irritability 

• Increased sleep or constant tiredness 

• Difficulty concentrating 

• Pulling away from friends or family 

• Carb and sugar cravings (your body wants quick energy) 

• Feeling slower or overwhelmed 

Untreated, it can influence or worsen other conditions, so noticing early signs matters. 

How to Support Your Mood in Early December

1. Light Exposure: Your Worldwide Mood Vitamin 

If sunlight is rare where you are, a light therapy lamp can help reset your internal clock. Use it in the morning for 20–30 minutes. If sunlight is available, step outside briefly—even if you’re bundled up or sweating. Natural light still works wonders. 

2. Move Your Body, Wherever You Are 

Whether it’s a brisk walk, stretching indoors, dancing around your kitchen, or climbing the stairs you usually avoid—movement boosts your serotonin. 

3. Maintain a Steady Rhythm 

Time zones, weather changes, and year-end responsibilities can disrupt routines. Try to keep consistent sleep and mealtimes to stabilize your internal rhythm. 

4. Stay Connected (Even If Social Events Feel Draining) 

You don’t need big gatherings. A simple chat, a video call, or sharing a warm drink with someone you trust can lift spirits and reduce isolation. 

5. Nourish Your Mind and Body 

Warm foods, hydration, and mindful breaks throughout the day help counter sluggishness. Cultural comfort foods count—just maybe not only those. 

6. Seek Professional Guidance If Needed 

Mental health support varies around the world, but if your symptoms grow or feel unmanageable, reaching out to a professional can help prevent SAD from turning into a more persistent condition. 

Preventing SAD From Becoming a Season-Long Mood Spiral 

• Notice your early signs and respond early. 

• Use your coping skills consistently—not just when you’re struggling. Be proactive vs reactive with how and when you are skillful to cope ahead of the darkness that comes.  

• Balance rest with meaningful activity. 

• Plan a few enjoyable moments throughout the month, whatever “holiday season” means in your culture. 

• Give yourself permission to slow down without shutting down. 

  
  

Early December can be a beautiful, reflective time—but also demanding. Prioritizing your well-being ensures you can navigate the season with steadiness instead of exhaustion. 

References 

1. American Psychiatric Association. (2023). Seasonal Affective Disorder (SAD). 

2. National Institute of Mental Health. (2024). Seasonal Affective Disorder: Symptoms, Treatments, and Causes. 

About the Author: My name is Nagnouma Sako. I’m a clinical intern at Allow Health LLC, completing my Master’s in Clinical Mental Health Counseling. My multicultural background has shaped who I am, enriching my perspective and deepening my appreciation for different worldviews. My journey into mental health comes after 10+ years in accounting and nonprofit management.  

If you ask me, I haven’t strayed too far from my true passion-helping people-only now, I get to do it more intimately and directly!