Contents
- Weather in December
- Frequently asked questions
- Average temperature in December
- Average pressure in December
- Average wind speed in December
- Average humidity in December
- Average rainfall in December
- Average rainfall days in December
- Average daylight in December
- Average sunshine in December
- Average sunshine days in December
- Average UV index in December
- Average cloud cover in December
- Average visibility in December
December
Weather in December
Temperature
Happy Valley in December experiences a gentle temperature dip, with average high-temperatures reducing from a moderately hot 23.9°C (75°F) in November to an enjoyable 19.6°C (67.3°F). December witnesses a minor deviation from daytime peaks, with an average nighttime temperature of 16.2°C (61.2°F).Humidity
With an average relative humidity of 70%, December is the least humid month.Rainfall
December is the month with the least rainfall. Rain falls for 11.2 days and accumulates 23mm (0.91") of precipitation.Daylight
The month with the shortest days is December, with an average of 10h and 48min of daylight.On the first day of the month, sunrise is at 06:46 and sunset at 17:38. On the last day of December, sunrise is at 07:02 and sunset at 17:50 HKT.
Sunshine
In Happy Valley, the average sunshine in December is 5.4h.UV index
In December, the average daily maximum UV index is 5. A UV Index estimate of 3 to 5 represents a moderate threat to health from unprotected exposure to Sun's UV rays for ordinary individuals.Note: The UV index of 5 during December leads to these advisories:
Be cautious. Those with fair skin can be subjected to burns in fewer than 30 minutes. Avoid the Sun's strongest UV rays by seeking shade and limiting exposure during midday. For holistic sun protection encompassing the eyes, ears, face, and neck, a wide-brim hat is key.
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What are the temperatures in December?
What is the least humid month?
What is the average humidity in December?
What is the driest month?
How many days does it rain in December in Happy Valley?
What is the month with the shortest days?
What is the average length of the day in December?
When is the sunrise / sunset in December?
How long on average sun shines in December?
What is the UV index reading in December?
Average temperature in December
Happy Valley, Hong Kong
- Average high temperature in December: 19.6°C
The warmest month (with the highest average high temperature) is August (30.5°C).
The month with the lowest average high temperature is January (18.5°C).
- Average low temperature in December: 16.2°C
The month with the highest average low temperature is August (27.7°C).
The coldest month (with the lowest average low temperature) is January (15°C).
Average pressure in December
Happy Valley, Hong Kong
- Average pressure in December: 1019.6mbar
The month with the highest atmospheric pressure is January (1020.3mbar).
The month with the lowest atmospheric pressure is August (1004.8mbar).
Average wind speed in December
Happy Valley, Hong Kong
- Average wind speed in December: 16km/h
The windiest month (with the highest average wind speed) is December (16km/h).
The calmest month (with the lowest average wind speed) is August (12.4km/h).
Average humidity in December
Happy Valley, Hong Kong
- Average humidity in December: 70%
The month with the highest relative humidity is May (84%).
The month with the lowest relative humidity is December (70%).
Average rainfall in December
Happy Valley, Hong Kong
- Average rainfall in December: 23mm
The wettest month (with the highest rainfall) is August (223mm).
The driest month (with the least rainfall) is December (23mm).
Average rainfall days in December
Happy Valley, Hong Kong
- Average rainfall days in December: 11.2 days
The month with the highest number of rainy days is July (26.8 days).
The month with the least rainy days is December (11.2 days).
Average daylight in December /
Average sunshine in December
Happy Valley, Hong Kong
- Average daylight in December: 10h and 5min
The month with the longest days is June (Average daylight: 13h and 30min).
The month with the shortest days is December (Average daylight: 10h and 48min).
- Average sunshine in December: 5h and 2min
The month with the most sunshine is July (Average sunshine: 10h and 0min).
The month with the least sunshine is March (Average sunshine: 5h and 18min).
Average sunshine days in December
Happy Valley, Hong Kong
- Average sunshine days in December: 16.9 days
The month with the most sunshine days is December (16.9 days).
The month with the least sunshine days is July (3.1 days).
Average UV index in December
Happy Valley, Hong Kong
- Average UV index in December: 5
The months with the highest UV index are May, June, July, August and September (UV index 7).
The month with the lowest UV index is January (UV index 4).
Average cloud cover in December
Happy Valley, Hong Kong
- Average cloud cover in December: 44
The month with the most cloud cover is March (Cloud cover 61).
The months with the least cloud cover are September and October (Cloud cover 35).
Average visibility in December
Happy Valley, Hong Kong
- Average visibility in December: 10km
The months with the highest visibility are September, October, November and December (10km).
The months with the lowest visibility are January, February, March, April, May, June, July and August (9km).
