Sunset is often portrayed as a peaceful, golden time—a moment to relax and reflect. But for many people, the transition from day to night triggers a surprising and unsettling emotional state known as sunset anxiety. Sometimes called “sundowning” in clinical settings (especially among those with cognitive decline), sunset anxiety is not limited to the elderly or those with dementia. It can affect anyone, manifesting as restlessness, sadness, fear, or unease as the light fades.
This phenomenon is more common than many realize. For some, it stems from the biological response to changes in light. As the sun sets, melatonin production increases to prepare the body for sleep, while serotonin—the mood-boosting neurotransmitter—declines. This shift can leave sensitive individuals feeling low, anxious, or mentally foggy.
But sunset anxiety isn’t just about biology. The symbolic nature of sunset can stir emotions tied to endings, loneliness, or unfulfilled goals. For people who live alone, sunset may mark the beginning of a long, quiet night. For others, especially those prone to depression or Seasonal Affective Disorder (SAD), the loss of natural light can feel like the world closing in.
There’s also a connection to circadian rhythm disruptions. Our internal clocks rely heavily on cues from natural light to regulate mood, alertness, and sleep. Irregular exposure to light can throw off this rhythm, making evenings feel heavier emotionally. Artificial lighting at night, especially blue light from screens, may further impair the brain’s natural wind-down process, amplifying feelings of anxiety.
So, what can be done?
Morning sunlight exposure is one of the most powerful ways to prevent or reduce sunset anxiety. Getting 15–30 minutes of sunlight early in the day helps reset your internal clock, supporting better mood and energy regulation throughout the day and into the evening. When sunlight is not convenient or available, light therapy is the convenient solution.