How do you know when summer is here?

You can tell summer is here when the days become noticeably longer and temperatures rise, often bringing warm, sunny weather. Seasonal changes like blooming flowers, lush greenery, and the sound of chirping birds or buzzing insects also signal the arrival of summer. Additionally, people often engage in summer activities such as going to the beach, barbecuing, and enjoying outdoor events. These signs together create a distinct atmosphere that marks the season.