While subtropical Hong Kong has four distinguishable seasons, generally good weather makes it an ideal destination all year round. The peak travel season is autumn, from September to around Christmas time.

Spring, from March to mid-May, tends to be warm and humid, accompanied by fog and drizzle. Sometimes air and ferry services are halted due to reduced visibility. The average Hong Kong temperature is 23C (73.4F) - light-overcoat-and-sweater weather. In summer, from May to the mid-September, frequent thunderstorms are the norm. Average temperature is 28C (82.4F). Bring an umbrella and dress lightly in cotton.

Dry and cool winter has an average temperature of 17C (62.6F). You need a wool sweater and heavy coat. Typhoon season in Hong Kong is possible in September. Don't venture out too far when the typhoon signal is lower than 3; stay indoors when it gets higher. All shops and banks are closed when typhoon signal 8 is raised.

Hong Kong celebrates traditional festivals such as Lunar New Year (The day falls between 22 January and 19 February, varying every year), Dragon Boat Festival (5th day of 5th moon of Chinese traditional calendar) and Mid-autumn Day (usually in September or October; many interesting activities are held that day in Hong Kong) plus Easter and Christmas. In addition, major expositions, car and horse races and golf tournaments take up the slack.

Hong Kong hotels are booked solid for April and October due to expositions and conventions. Christmas sales attract many visitors; hotel prices skyrocket, especially on weekends. Make reservations at least one week in advance to avoid disappointment. Budget travelers should stay away.