Ever Changing Seasons & Characters

Have you ever noticed that a character's moods change with the seasons?
Is this because, we as writers shift with the seasons as well?
When writing in the summer, the character is almost always on a beach half-naked and
they are either angry, or having a hot 'n' steamy affair. In the winter, they're bundled up
brooding or shacked up in a snowed in mountain cabin. The spring brings them out for long
walks and hot sex in the woods or open flower filled fields. But fall, they tend to slow to a sensual
pace with the turning of the leaves. It then becomes hot cider (spiked of course!), raking leaves then tumbling in them like a couple of kids or a stroll through the countryside, soaking in the changing of the colors. Romantic, the changing of the colors.
Why is it that the fall tends to soften the character's moods?
They tend to reminisce about pleasant memories or create new ones with the love interest in the story.
I think our characters are a part of every writer's soul and takes a little piece with them when they exit to live on a page for all the world to see.
Character's moods are guided by the mood of the writer. Or are our moods guided by the moods of our Characters?
I truly can't decide.
Lost in New Jersey,
Tara Nina