Is the wind calmer in the morning or afternoon?

Question

Location is San Francisco

Answer 1

The wind speed varies due to the thermal turbulence in the vicinity of the ground.This turbulence is usually minimum in the night and morning and maximum during afternoon and evening.Hence the wind is calm or light in the morning and comparatively strong in the later part of the day.Thus the variation of wind is intimately connected to the thermal structure or temperature distribution in the lower atmosphere.Coastal stations experience these variations in the form of sea-breeze and land-breeze which are caused due to the differential heating of the land and the adjacent sea.Sea-breeze is slightly stronger than land breeze.

Answer 2

Heat drives the wind.

So in the cool morning there is less wind; therefore it is calmer.
In the afternoon the temperature is higher and there is more air movement. Also the atmospheric items have more energy; clouds tornados hurricanes, storms etc.

The coldest part of the day is just before dawn. When the sun rises, in the east, it warms up that area and forces the wind to blow from the east to the west. So just before the light and heat hits you there will be a cool wind from air retreating from the sun.

In San Francisco the warmer water from the Pacific hits the colder water of the bay creating that fog you know so well. At night the warmer air of the city falls down into the bay and hits the water sucking up a lot of moisture (water evaporates) so that in the morning it is full of water. Colder water holds less water vapor than warmer air.

This is how all weather is generated. Warm air hits cold and cools, when it cools it has to dump the water vapor it has; as rain. This is why storms are all along the weather front.

When a cloud system is over the water it gets to suck up more water and that gives it more power. Hurricanes intensify over water and lose power when they are over land.

Answer 3

The afternoon is hotter and causes more convection (air movement due to the hot air rising), so the afternoon would be more windy. The evening/night would be the calmest and in the morning the winds would begin picking up until they reach their peak in the late afternoon.

Answer 4

Morning because in the afternoon the air is much warmer than the ocean and bay temperature and local winds are caused by differences in air temperature.

Answer 5

I think the wind is calmer in the morning.

Answer 6

Almost always in the morning due to night time cooling.

Answer 7

morning is normally calmer!