1.
to feel refreshed; to cheer up; to feel better
Describes a feeling of emotional relief or brightening, as if clouds have cleared from one's mood. Used when gloom, stress, or worry lifts.
散歩したら気分が晴れた。
I felt better after taking a walk.
Usage
A metaphorical expression comparing one's mood to the sky clearing up after rain or clouds. The verb 晴れる literally means "to clear up" (weather), so 気分が晴れる evokes the image of emotional clouds parting.