What time of day is wind speed lowest?
What time of day is wind speed lowest? The wind speed tends to decrease after sunset because at night the surface of the Earth cools much more rapidly than does the air above the surface. As a result of this difference in cooling ability, it doesn't take long for the ground to become colder than the air above it.
What time of day is least windy?
Why is there generally less wind at nighttime than daytime? The nighttime causes the surface to cool off, creating a temperature inversion that is very stable. Winds aloft can't mix down to the surface in those conditions, hence the winds usually die down at night.