If it looks like Autumn, feels like Autumn, and smells like Autumn, then it probably is Autumn.
All we need now is the sound of distant hunters' gunfire, and the sight of wood-smoke coming from cottage chimneys, and it'll be confirmed.
We've already had one morning of a chilly 10C, and although we're still swimming every day, it doesn't look too good for the coming month.
Acorns are dropping from the Oak trees, the grass has stopped growing, and Blackberries are everywhere. It won't be long before Chocolate Santas are in the shops, and the upcoming crazy Black Friday (are we allowed to call it that?) will cause people to temporarily loose their minds.
I sense the end of Summer. Temperatures will now struggle to reach 25C.
In fact I love the month of September, it's the month when we all calm down, relax, and enjoy the lower temperatures and more reliable weather. Tourists will go home, Cafés and Restaurants will be quieter, and the roads will be even emptier than they already are.