Sunny day means a day with light breeze and sunshine. It describes sunshine and warm weather. It is often used in spring. This idiom first appeared in a sentence in the Tang Dynasty, "The wind is sunny, you can open your eyes, but the rain is moist and the smoke is thick." From Wu's History of Pain in Qing Dynasty: "It was a beautiful day, and many officials came to pay homage." This idiom is generally used as a predicate, attribute and clause to describe sunny and warm weather;
Next, let's look at its synonyms and antonyms. Its synonyms include sunny weather, beautiful spring and beautiful scenery, and its antonyms include windy and rainy weather. It should be noted that sunny days and sunny days describe good weather, and sunny days emphasize "warmth".