However, it's important to note that individuals with narcissistic personality traits or narcissistic personality disorder (NPD) are still human beings, and their reactions to weather changes or sleep disturbances can vary just like anyone else's. Weather changes or disruptions in sleep patterns can affect people differently, irrespective of their personality traits.
Narcissists, like anyone else, might experience discomfort or annoyance due to extreme weather conditions, but whether it makes them extra grouchy the next day depends on their individual personality and coping mechanisms. Similarly, some individuals may find that their sleep is affected during a full moon or periods of increased brightness, but this can vary from person to person and is not exclusive to those with narcissistic traits.
It's important to remember that personality traits and disorders are just one aspect of an individual's makeup, and they don't determine every aspect of their behavior or reactions. People are complex beings influenced by various factors, and individual differences play a significant role in how they respond to different situations.