Weather: January is the coldest month in Hong Kong, but it is usually dry and mild. It sometimes gets cloudy, with some rain, which is rarely heavy. The average low and high temperatures are 14 °C (57 °F) and 19 °C (66 °F). January is the driest month of the year and so sightseeing is all the easier.
Clothing: Light winter clothing should be sufficient for the days, but something heavier might be needed for the evenings.
If you are a pollen allergy sufferer, be aware many flowers bloom in January in Hong Kong: Chinese hibiscus, Turk's cap, Mexico star flower, camellia, etc. If needed, please prepare a mask or take some medicine.
The Spring Festival is usually in February. It is the greatest and longest holiday festival in Hong Kong. It is a 3-day holiday generally.
During the festival, you can see the Chinese New Year Parade in the streets of Tsim Sha Tsui, temple fairs, and displays of lanterns in parks.
You can also enjoy an impressive fireworks show over Victoria Harbor, and visit a flower market on which you can buy gifts, holiday food, and tourist souvenirs and experience a local custom firsthand. There are always Chinese New Year horse races during the festival.
Hong Kong is a shopping paradise any time of the year, but due to the holidays in January and the abundance of "lai see" or lucky money given out during the Chinese New Year celebrations, there are sales galore as retailers compete harder than ever for the dollars in your pocket. Visit the shopping districts of Causeway Bay and Mong Kok for the best deals.
A wonderful way to spend a winter evening is to ride down to the coastal town of Aberdeen after sightseeing on Victoria Peak and have dinner on a famous floating seafood restaurant boat such as the Jumbo.
The weather in January is generally fine and dry and often sunny, and it can make for a nice walk down the peak to Aberdeen along the country park trails.
January is a shoulder season travel period. However, if the Spring Festival period falls in the end of January, hotel prices will be significantly increased. Tickets for flights to Hong Kong and between Hong Kong and destinations in mainland China may be difficult to get. So you'd better book in advance.