White trousers and jeans

Have they had their final outing?
I have worn white linen trousers and jeans most of this summer because everything goes with them and because the weather has been so amazing.
But in London today I noticed that women are beginning to wear what I think of as Autumn wear and my white jeans felt a bit seaside-y.
So is it the temperature or the season which influences what we wear?
Just as woolly jumpers feel wrong, however chilly a day might get in July, should the white trousers now be on their way to the suitcases in the loft?