January weather forecast
Hong Kong, Hong Kong

Taking into account the variation in the weather parameters of Hong Kong, the start of a new year is characterized by mild daily temperatures. The average high in January hovers at about 18.6°C (65.5°F), making it one of the cooler months. A shift from the typically warm climatic conditions of the region is observed, with less sunlight, higher humidity, and a notable decrease in temperature. As evenings set in, a palpable coolness descends upon the city mirroring winter conditions in other parts of the world. This month also provides respite from the heavy rainfall usually experienced in Hong Kong.

Temperature

January, with its average high-temperature of 18.6°C (65.5°F) and an average low-temperature of 14.5°C (58.1°F), holds the record as the coldest month.

Humidity

The average relative humidity in January in Hong Kong, Hong Kong, is 74%.

Rainfall

The month with the least rainfall in Hong Kong is January, when the rain falls for 5.4 days and typically collects 25mm (0.98") of precipitation.

Sea temperature

In January, the average sea temperature is 19.1°C (66.4°F).
Note: Swimming in water of 19.1°C (66.4°F) is not enjoyable for the majority of individuals. Breathing control becomes increasingly challenging as the temperature dips from 21°C (69.8°F) to 15°C (59°F).

Daylight

The average length of the day in January is 10h and 57min.
On the first day of January, sunrise is at 07:02 and sunset at 17:50. On the last day of the month, sunrise is at 07:02 and sunset at 18:10 HKT.

Sunshine

In Hong Kong, the average sunshine in January is 4.6h.

UV index

January, November and December, with an average maximum UV index of 7, are months with the lowest UV index in Hong Kong. A UV Index of 6 to 7 symbolizes a high health vulnerability from unsafe exposure to UV radiation for the ordinary person.
Note: The UV index of 7 during January translates into the following guidance:
Adopt measures and apply sun safety strategies. Shielding from skin and eye damage is necessary. Limit your exposure to the sun's UV radiation, which is strongest between 10 a.m. and 4 p.m., and note that parasols or canopies may not provide full sun protection. Sun protection is enhanced with clothing that boasts a tight weave yet offers a loose fit.