13 to 19 degrees. Do you wear cashmere sweaters?

You need to wear it in this situation.

Sweaters are more suitable for 10 to 20 degrees. Generally speaking, the suitable temperature of the human body is around 26 degrees. You can wear a thin sweater when the temperature is between 20 and 25 degrees. When the temperature is below 20 degrees, the weather turns cold gradually, so you should wear cashmere sweater at this time.

It depends on people's cold resistance, and people with strong cold resistance don't have to wear it.