Change of season usually also brings about some sort of change in people. A person may feel determined in autumn to start the school year responsibly and organized. Winter may carry with it a peaceful air, where you can feel as free as the white snow that is both blank and rich, or you can cozy up inside with friends, hot chocolate, and a good movie. Spring gives the flavor of frivolity and exhilaration in the blooming world and all its adventures and possibilities.
Summer, on the other hand...summer for me is the starkest contrast of all - it brings about the biggest, most jolting change. Summer is when friends go home. Summer is when no one seems to be around. Summer is when you sometimes have to get a job doing something so completely and utterly mindless you can feel your wasted brain cells choking. Summer is a time for self-reflection, but you have so much time for it that you end up wallowing.
On the other hand, there are some people around - it's just harder to stay in touch and it takes more effort to get together. Summer is when you can catch up on your reading...catch up on your writing...learn how to get over hating ellipses...
I suppose it's about a balance. But it's harder in the summer. There isn't constant action to distract you. You're alone a lot more often than you are during the school year. It's like a switch that was on all year has suddenly, unexpectedly been turned off. Your entire comfort zone melts away. The big bubble of fun that surrounds you all year pops. You're left with only a little bit and that has to last you all summer long! And that summer can be like an uncharted map - three whole months of nothingness. Anything could happen. Nothing could happen. There's no way of knowing. It's like Alice falling down the rabbit hole and having no idea when she'll land or where or what'll happen afterwards or how she'll get back.
I think summer is the most frightening season.