What's the difference between cloudy and sunny?

The difference between cloudy and sunny days is: different expressions, different definitions and different ultraviolet effects.

First, the expression is different.

1, cloudy: In weather forecast, cloudy is generally represented by a cloud and half the sun behind it.

2. Sunny day: In the weather forecast, sunny day is represented by a sun.

Second, the definition is different.

1, cloudy: There is a strict definition of "cloudy" weather, which refers to a weather that can be called "between sunny and cloudy". In meteorology, it means that the cloud coverage in the sky accounts for four-tenths to eight-tenths of the sky.

2. Clear: Clear refers to the phenomenon that there are no clouds or scattered clouds in the sky, but the cloud amount is less than the sky area of110.

Third, ultraviolet rays have different effects.

1, cloudy: In cloudy weather, it is still necessary to guard against the invasion of ultraviolet rays, and some ultraviolet rays can still reach the surface through the clouds.

2, sunny days: there is no cloud cover, and it is necessary to prevent ultraviolet rays in sunny days in summer.