(other than the obvious signs..)
1. Restaurants stop serving cold noodles
2. The vending machines sell hot drinks
3. The toilet seats are automatically warm (see: toilet)
4. Every convenient store sells ‘oden’
5.They light things up
****
**In summer, vending machines (jidouhanbai) sells cold drinks only (blue buttons), in winter, half of them changed to hot drinks (red buttons)geniuses!!

**Oden; delicious, healthy and warm. Available practically everywhere in winter!
(image from wikimedia)
**The Japanese llloove light-ups, in winter you’ll find more of it. From left to right, light up at Kyoto Station, Kiyomizudera, Kobe illumination, Ginza-Tokyo.

no snow yet in Kyoto, but we know winter is here!
Oh that is so cool!! We are about to get buried in snow here. I love the fresh white powdery snow. Not so much the grey slush that piles up in a few weeks though. I love your pictures!