Am going to Hongkong in the first week of Jan .What kind of wheather wil be there?

According to the weather records in the past years, it will have the average temp of about 16C. And the changeable temp, especially at nights, may need you to prepare the sweater or thick coat. Also it may rain a little then. Therefore, the rainy gear may be necessary and you'd better pay attention to the weather forecast in advance.