What are the idioms that describe a pleasant climate?

The clouds are light and the wind is light [explanation]. Describe sunny weather. Also known as "the wind is light and the clouds are light."

Cloudless in Wan Li [Explanation] The sky is blue and there is no cloud. Describe sunny weather.

Autumn is crisp [explanation] Describe autumn is crisp and sunny.

The wind is light and the clouds are light [explanation]. Describe sunny weather. The same as "the wind is light and the clouds are light".

Blue Sky Wan Li [Explanation] Wan Li: refers to a large area and a long distance. Describe sunny weather.

Blue sky [explanation] blue sky: a light blue sky. The blue sky is as clear as washing. Describe sunny weather.