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
Weather in December
Temperature
In December, the average high-temperature registers at a pleasant 21.6°C (70.9°F), nearly identical to November's 19.9°C (67.8°F). An average low-temperature of 13.8°C (56.8°F) is common during the nights of December.Humidity
The average relative humidity in December is 69%.Rainfall
In Chelsea, during December, the rain falls for 12.6 days and regularly aggregates up to 44mm (1.73") of precipitation. Throughout the year, in Chelsea, there are 177.5 rainfall days, and 562mm (22.13") of precipitation is accumulated.Daylight
With an average of 14h and 48min of daylight, December has the longest days of the year in Chelsea.On the first day of December in Chelsea, sunrise is at 5:50 am and sunset at 8:26 pm. On the last day of the month, sunrise is at 5:59 am and sunset at 8:45 pm AEDT.
Sunshine
The month with the most sunshine in Chelsea is December, with an average of 9.7h of sunshine.UV index
December is the month with the highest UV index, with an average maximum UV index of 6. A UV Index reading of 6 to 7 represents a high health vulnerability from exposure to the Sun's UV radiation for average individuals.Note: In December, an average UV index of 6 transforms into the following instructions:
Endorse precautions and be consistent with sun safety guidelines. Preventing sunburn is paramount. Limit direct sun exposure especially between 10 a.m. and 4 p.m., when UV radiation is at its peak. However, keep in mind that shade structures may not provide full sun protection. Combat UV radiation's detrimental effects with sun-safe clothing and UV-blocking eyewear.
Frequently asked questions
What are December temperatures in Chelsea?
What is the average humidity in December in Chelsea?
How much does it rain in Chelsea in December?
When are the longest days in Chelsea?
What is the average length of the day in December in Chelsea?
When are sunrise and sunset in December in Chelsea?
What month has the most sunshine in Chelsea?
How many hours of sunshine does Chelsea have in December?
When is the highest UV index in Chelsea?
What is the UV index reading in December in Chelsea?
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).
Chelsea, Australia
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