know which way the wind blows

The phrase "know which way the wind blows" is an idiom that means to have a good understanding of the current situation or the prevailing opinion or trend. It often implies being able to accurately predict how events or people may behave in a given situation by closely observing and understanding the external influences or factors that can impact the outcome. It emphasizes the ability to be perceptive, aware, and well-informed about the circumstances or attitudes surrounding a particular situation.