Surrounded by the South China Sea on the east, south, and west, Hong Kong has a humid subtropical climate, which borders on temperate for nearly half the year. Hong Kong weather is known for its unpredictability and variation, and the weather here is impacted by tropical cyclones, strong winter monsoon winds, black rains and thunderstorms. Despite having a sub-tropical climate, the city experiences the four distinct seasons of summer, autumn, winter and spring.
Summer in Hong Kong starts around the month of June and continues till August. These months are characterized by hot and humid weather with occasional showers and thunderstorms. Hong Kong is frequently hit by typhoons during the summer months, which at times lead to floods and landslides.
Temperatures during the summer season usually exceed 30° Celsius during the day, and nights are also quite warm with an average minimum temperature of 26° Celsius. The climate during the summer months is quite unpredictable and moves between hot and humid to sunny and bright. August receives the highest average rainfall.
The autumn season arrives by September and continues till the middle of December. During this season the weather is quite pleasant. The humidity and temperature is comparatively low during this time and the weather remains sunny and clear. The average temperature during the autumn season is around 20-27° Celsius. Rainfall during this time is not as frequent as during the monsoons. This is the best time to visit Hong Kong and hotels in Hong Kong remain packed during this season.
The winter season in Hong Kong prevails between mid-December to February. Hong Kong winter is mild with temperatures hovering between 15° Celsius and 20° Celsius. This season is marked by clear skies, low humidity and sunny days with a cool breeze. However, the winter which starts sunny in December gradually becomes cloudier towards February, with the occasional cold winds blowing from the north. The northeast winter monsoons bring frequent cold winds which can cause the temperature to dip below 10° Celsius. Rainfall is not frequent during the winter months and receives an average rainfall of a mere 30-40 mm.
During the months of March to May, Hong Kong experiences the spring season, which is characterized by warmer and more humid weather. The average temperature during this time ranges between 18° Celsius and 27° Celsius. Spring is the cloudiest time of the year in Hong Kong, and there is a substantial increase in rainfall around the month of April. The weather during this season is unstable and experiences a combination of warm days with clear blue skies and heavy black rain. Hong Kong receives an average of 90-120 mm rainfall through the season.
The best time to visit Hong Kong is during the autumn months of September to December. Hong Kong Hotels remain busy during this time and tourists often book hotels in advance to ensure ease of travel.