What should international travelers wear in Istanbul during mild autumn and winter weather?

During warm weather, a camisole-style top and linen trousers can be comfortable for walking around, even if people around you are dressed more conservatively or warmly.

At around +15°C in January, travelers accustomed to colder climates may be comfortable sightseeing in sneakers and a light jacket without a hat.

Do not choose your outfit solely by copying locals: in mild Istanbul weather, some people wear boots and hats even when visitors may not need them.

For neighborhoods such as Kuzguncuk, layered clothing is practical: add a light jacket if it turns windy or cool rather than judging the weather by an unusually warm outfit worn by a passer-by.