Hong Kong weather in December
Temperature, sea and sunshine in December: long-term averages from 30 years of weather data, not a forecast.
Holiday weather in December
Excellent
Best time to visit: October – February
What is the weather like in Hong Kong in December?
In December, Hong Kong is mild: daytime highs average 20 °C, and nights cool down to about 15 °C. The sea averages 21.1 °C – refreshing for a swim. Expect around 5 hours of sunshine a day. Rain is rare: about 4 days bring 28 mm in total. All in all, December is an excellent month for a holiday in Hong Kong.
December compared
How the weather changes from November to January. Tap a month to open it.
| NovemberNov | DecemberDec | JanuaryJan | |
|---|---|---|---|
| Score | 86 | 87 | 83 |
| Day | 24° | 20° | 19° |
| Night | 19° | 15° | 14° |
| Sea | 24° | 21° | 20° |
| Sun | 6 h | 5 h | 5 h |
| Rain days | 6 | 4 | 5 |
More details for December
- Daylight
- 10 h 47 min06:55 – 17:42
- UV index
- 5 · moderateclear sky, noon (estimate)All months
- Muggy days
- 2 daysdew point 18 °C or more
- Wind
- 18 km/haverage daily peak
- Cloud cover
- 47 %on average
- Hot days
- 0 days30 °C or more
- Time zone
- UTC+8Asia/Hong_Kong
How the score comes together
- Temperatureweight 50 %100 %
- Sunshineweight 20 %37 %
- Few rainy daysweight 30 %100 %
Each factor is rated from 0 to 100 % and weighted for the travel style “City break”.
What to pack in December
- Swimwear
- Sunscreen
- A jumper for the evenings
Hong Kong in December: quick answers
Is Hong Kong hot in December?
No. In December, Hong Kong is mild: daytime highs average 20 °C and nights drop to about 15 °C.
Can you swim in Hong Kong in December?
Yes. In December the sea averages 21.1 °C – refreshing for a swim.
Does it rain much in Hong Kong in December?
Rain is rare: about 4 days bring 28 mm in total.
Hong Kong month by month
The whole year in Hong KongAll destinations: Hong KongWhere to go in DecemberSea temperature in December
Climate averages 1996–2025, not a forecast. Data: Copernicus ERA5 / ERA5-Land via Open-Meteo.com (CC BY 4.0), NOAA OISST, WMO 1991–2020 (NOAA NCEI), GeoNames (CC BY 4.0)