Cold
Last year I did an around the world trip using the Mistake Fare from Hong Kong to Istanbul in premium coach as a major component of the trip. Most of my time in Asia was spent in Thailand.
When I arrived in January in Istanbul for a three day stopover, the water in the fountain in front of my Holiday Inn was frozen. When I toured the Topkapi to see the relics from the life of the Prophet, I was freezing (the palace buildings are not heated. Neither is the Church of the Holy Wisdom.
The last day it snowed lightly.
Take warm cloths.