What is the weather like in HK from january through to may please?

It is usually the dry and cool winter time from Jan. to ends in February, having an average temperature of 17 C (63 F). The temperature then is changeable – when a cold front comes, the cold and dry north wind brings a sudden drop in temperature down to less than 10 C (50 F) suddenly. Well, it is the spring time from March to mid-May tends to be warm and humid, accompanied by fog and drizzle. The average temperature is 18 C (64 F) to 25 C (77 F). As it turns a little bit cold at night, travelers should take a light overcoat, a sweater as well as rainwear. It is the hot summer time from late May.