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
Chelsea records an average high-temperature of a pleasant 21.6°C (70.9°F) in December, maintaining a close correlation with November's 19.9°C (67.8°F). During December, Chelsea's temperature falls to a steady low-temperature average of 13.8°C (56.8°F).Humidity
In Chelsea, the average relative humidity in December is 69%.Rainfall
In December, the rain falls for 12.6 days. Throughout December, 44mm (1.73") of precipitation is accumulated. In Chelsea, during the entire year, the rain falls for 177.5 days and collects up to 562mm (22.13") of precipitation.Daylight
With an average of 14h and 48min of daylight, December has the longest days of the year.On the first day of the month, sunrise is at 5:50 am and sunset at 8:26 pm. On the last day of December, sunrise is at 5:59 am and sunset at 8:45 pm AEDT.
Sunshine
The month with the most sunshine is December, with an average of 9.7h of sunshine.UV index
The month with the highest UV index is December, with an average maximum UV index of 6. A UV Index value of 6 to 7 symbolizes a high health risk from exposure to the Sun's UV rays for ordinary individuals.Note: The average daily UV index of 6 in December transforms into the following instructions:
Deter overexposure. Protecting against the sun's effects is essential. Seek shade and limit direct Sun exposure between 10 a.m. and 4 p.m., when UV radiation is at its peak, but be aware that not all shade structures provide complete sun protection. For a sun-safe wardrobe, go for clothes that are tightly woven and generously sized.
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What is the average December temperature?
What is the average humidity in December?
How many days does it rain in December?
When are the longest days?
What is the average length of the day in December?
When is the sunrise / sunset in December?
What month has the most sunshine?
How many hours of sunshine does Chelsea have in December?
When is the highest UV index?
What is the UV index reading in December?
Average temperature in December
Chelsea, Australia
- Average high temperature in December: 21.6°C
The warmest months (with the highest average high temperature) are January and February (23.4°C).
The month with the lowest average high temperature is July (13°C).
- Average low temperature in December: 13.8°C
The month with the highest average low temperature is February (16.2°C).
The coldest months (with the lowest average low temperature) are July and August (8.6°C).
Average pressure in December
Chelsea, Australia
- Average pressure in December: 1012.8mbar
The month with the highest atmospheric pressure is June (1021mbar).
The month with the lowest atmospheric pressure is January (1012.6mbar).
Average wind speed in December
Chelsea, Australia
- Average wind speed in December: 14km/h
The windiest months (with the highest average wind speed) are July and August (18.6km/h).
The calmest months (with the lowest average wind speed) are January, March and December (14km/h).
Average humidity in December
Chelsea, Australia
- Average humidity in December: 69%
The month with the highest relative humidity is June (78%).
The month with the lowest relative humidity is January (68%).
Average rainfall in December
Chelsea, Australia
- Average rainfall in December: 44mm
The wettest month (with the highest rainfall) is May (59mm).
The driest month (with the least rainfall) is March (34mm).
Average rainfall days in December
Chelsea, Australia
- Average rainfall days in December: 12.6 days
The month with the highest number of rainy days is August (19.3 days).
The month with the least rainy days is January (10.1 days).
Average daylight in December /
Average sunshine in December
Chelsea, Australia
- Average daylight in December: 14h and 5min
The month with the longest days is December (Average daylight: 14h and 48min).
The month with the shortest days is June (Average daylight: 9h and 36min).
- Average sunshine in December: 9h and 4min
The month with the most sunshine is December (Average sunshine: 9h and 42min).
The month with the least sunshine is May (Average sunshine: 6h and 24min).
Average sunshine days in December
Chelsea, Australia
- Average sunshine days in December: 16.1 days
The month with the most sunshine days is January (17.1 days).
The month with the least sunshine days is August (9.4 days).
Average UV index in December
Chelsea, Australia
- Average UV index in December: 6
The month with the highest UV index is December (UV index 6).
The months with the lowest UV index are June, July and August (UV index 3).
Average cloud cover in December
Chelsea, Australia
- Average cloud cover in December: 35
The month with the most cloud cover is July (Cloud cover 49).
The month with the least cloud cover is January (Cloud cover 31).
Average visibility in December
Chelsea, Australia
- Average visibility in December: 10km
The months with the highest visibility are January, February, March, April, May, June, July, August, September, October, November and December (10km).
The months with the lowest visibility are January, February, March, April, May, June, July, August, September, October, November and December (10km).
