Some people may experience depression during rain due to a condition known as Seasonal Affective Disorder (SAD). SAD is a type of depression that occurs at a specific time of year, typically during the fall and winter months when there is less sunlight. The lack of sunlight can disrupt the body's internal clock and lead to symptoms of depression, such as low energy, sadness, and irritability. The dark, gloomy weather during rainy days can also contribute to feelings of sadness and lethargy in some individuals. It is important for individuals experiencing depressive symptoms during rainy weather to seek support from healthcare professionals.