Hong Kong
Hong Kong
Long-term weather forecast
Long-term weather forecast

December weather forecast and climate
Hong Kong, Hong Kong

A bird
A bird's eye view of the lit city of Hong Kong, in Hong Kong Island
December is the least humid month of the year at 68% with mostly clear skies, and transitions to the mild winter with a gradual drop in temperatures. Average high temperatures are mild 20°C (68°F), while average low temperatures drop to a comfortable 15.6°C (60.1°F).
The sun is visible in its full splendor for 6 hours a day as the days become short, and the nights are prone to cool temperatures. The winter sun, with an ultraviolet index of 7 suggests precautionary measures during outdoor explorations.
Be warned that early morning photography is a little tricky with the presence of fog, especially at high altitudes like the Victoria Peak for a spectacular view of the skyscrapers, the glittering harbor, and the green terrain of the far-off New Territories.
Rain is of little consequence in December, but it never hurts to carry warm clothes and protective rain gear as Hong Kong weather is never truly dry.

What is the temperature in December in Hong Kong?

In Hong Kong, in December, the average high-temperature is 20.2°C (68.4°F), and the average low-temperature is 15.9°C (60.6°F).

What is the least humid month in Hong Kong?

December is the least humid month in Hong Kong, with an average relative humidity of 69%.

What is the average humidity in December in Hong Kong?

In Hong Kong, the average relative humidity in December is 69%.

How many days does it rain in December in Hong Kong?

In Hong Kong, Hong Kong, in December, it is raining for 4.5 days, with typically 26.8mm (1.1") of accumulated precipitation.

What is the sea water temperature in December in Hong Kong?

In Hong Kong, Hong Kong, in December, the average water temperature is 21°C (69.8°F). Swimming in 21°C (69.8°F) is not enjoyable for the majority. Controlling breathing becomes progressively more difficult as surface water temperature decreases below 21°C (69.8°F).

What is the month with the shortest days in Hong Kong?

With an average of 10.8h of daylight, December has the shortest days of the year in Hong Kong, Hong Kong.

How many hours of daylight does Hong Kong have in December?

In Hong Kong, the average length of the day in December is 10.8h.

How many hours of sunshine does Hong Kong have in December?

In December, the average sunshine in Hong Kong is 5.6h.

What are the months with the lowest UV index in Hong Kong?

Months with the lowest UV index in Hong Kong, Hong Kong, are January, November and December, with an average maximum UV index of 7.

What is the UV index reading in December in Hong Kong?

In December, the average daily maximum UV index in Hong Kong is 7. A UV Index value of 6 to 7 symbolizes a high health risk from the exposure to the Sun's UV rays.
Average temperature in December - Hong Kong, Hong Kong
  • Average high temperature in December: 20.2°C

The warmest month (with the highest average high temperature) is July (31.4°C).
The month with the lowest average high temperature is January (18.6°C).

  • Average low temperature in December: 15.9°C

The month with the highest average low temperature is July (26.8°C).
The coldest month (with the lowest average low temperature) is January (14.5°C).

Average humidity in December - Hong Kong, Hong Kong
  • Average humidity in December: 69%

Months with the highest relative humidity are April and May (83%).
The month with the lowest relative humidity is December (69%).

Average rainfall in December - Hong Kong, Hong Kong
  • Average rainfall in December: 26.8mm

The wettest month (with the highest rainfall) is June (456.1mm).
The driest month (with the lowest rainfall) is January (24.7mm).

Average rainfall days in December - Hong Kong, Hong Kong
  • Average rainfall days in December: 4.5 days

The month with the highest number of rainy days is June (19.1 days).
The month with the lowest number of rainy days is December (4.5 days).

Average sea temperature in December - Hong Kong, Hong Kong
  • Average sea temperature in December: 21°C

The best month for swimming (with the highest average sea temperature) is July (29.1°C).
The coldest month (with the lowest average sea temperature) is February (18.9°C).

Average daylight in December / Average sunshine in December - Hong Kong, Hong Kong
  • Average daylight in December: 10.8h

The month with the longest days is June (Average daylight: 13.5h).
The month with shortest days is December (Average daylight: 10.8h).

  • Average sunshine in December: 5.6h

The month with most sunshine is July (Average sunshine: 6.8h).
The month with least sunshine is March (Average sunshine: 2.9h).

Average UV index in December - Hong Kong, Hong Kong
  • Average UV index in December: 7

Months with the highest UV index are April, May, June, July and August (UV index 12).
Months with the lowest UV index are January, November and December (UV index 7).