What is the weather like when I go to Gulangyu Island in Xiamen from November 17 to 1121? Is it expensive to buy clothes there?

Looking at the weather forecast, it is sunny. There has been no rain recently. The temperature is still so high that wearing short sleeves and a jacket should be enough. Depending on where you compare the clothes, they are more expensive than in small cities and cheaper than in big cities. In fact, the prices of clothes from several big brands are similar across the country. It is recommended that you go to Gulangyu Island on Saturdays and Sundays and book your boat tickets early.