December weather forecastCoolac, Australia
December
Weather in December
December, the first month of the summer in Coolac, is a moderately hot month, with temperature in the range of an average low of 12.6°C (54.7°F) and an average high of 26.4°C (79.5°F).Temperature
A soft shift in the average high-temperature is noticeable in December, transitioning from an agreeable 22.7°C (72.9°F) in November to a warm 26.4°C (79.5°F). December nights in Coolac bring a significant cooling from the heat of the day, with averages of 12.6°C (54.7°F).Humidity
In December, the average relative humidity is 60%.Rainfall
In Coolac, in December, during 11 rainfall days, 45mm (1.77") of precipitation is typically accumulated. Throughout the year, there are 137.5 rainfall days, and 533mm (20.98") of precipitation is accumulated.Snowfall
January through June, September through December are months without snowfall.Daylight
The month with the longest days is December, with an average of 14h and 30min of daylight.On the first day of December, sunrise is at 5:46 am and sunset at 8:06 pm. On the last day of the month, sunrise is at 5:56 am and sunset at 8:24 pm AEDT.
Sunshine
With an average of 11.1h of sunshine, December has the most sunshine of the year.UV index
January, February and December, with an average maximum UV index of 6, are months with the highest UV index in Coolac. A UV Index value of 6 to 7 symbolizes a high health vulnerability from unprotected exposure to Sun's UV rays for the ordinary person.Note: An average UV index of 6 in December transforms into this advice:
Dodge overexposure. Fair-skinned people can get singed in less than 20 minutes. Between 10 a.m. and 4 p.m., UV radiation is strongest. Make an effort to avoid direct sunlight during this time, remembering that shade structures may not provide full sun protection. Experience reduced UV exposure by about half when donning a wide-brim hat.
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in December
Coolac, Australia
- Average high temperature in December: 26.4°C
The warmest month (with the highest average high temperature) is January (29.8°C).
The month with the lowest average high temperature is July (9.7°C).
- Average low temperature in December: 12.6°C
The month with the highest average low temperature is January (15.3°C).
The coldest month (with the lowest average low temperature) is August (1.4°C).
Average pressure in December
Coolac, Australia
- Average pressure in December: 1012.4mbar
The month with the highest atmospheric pressure is June (1022.2mbar).
The month with the lowest atmospheric pressure is January (1011.8mbar).
Average wind speed in December
Coolac, Australia
- Average wind speed in December: 8.6km/h
The windiest month (with the highest average wind speed) is January (8.9km/h).
The calmest month (with the lowest average wind speed) is June (6.6km/h).
Average humidity in December
Coolac, Australia
- Average humidity in December: 60%
The month with the highest relative humidity is July (88%).
The month with the lowest relative humidity is January (55%).
Average rainfall in December
Coolac, Australia
- Average rainfall in December: 45mm
The wettest month (with the highest rainfall) is November (60mm).
The driest month (with the least rainfall) is January (32mm).
Average rainfall days in December
Coolac, Australia
- Average rainfall days in December: 11 days
The month with the highest number of rainy days is August (14 days).
The month with the least rainy days is January (9.4 days).
Average snowfall in December
Coolac, Australia
- Average snowfall in December: 0mm
The month with the highest snowfall is August (9mm).
The months with the least snowfall are January, February, March, April, May, June, September, October, November and December (0mm).
Average snowfall days in December
Coolac, Australia
- Average snowfall days in December: 0 days
The months with the highest number of snowfall days are July and August (0.3 days).
The months with the least snowfall days are January, February, March, April, May, September, October, November and December (0 days).
Average daylight in December /
Average sunshine in December
Coolac, Australia
- Average daylight in December: 14h and 30min
The month with the longest days is December (Average daylight: 14h and 30min).
The month with the shortest days is June (Average daylight: 9h and 54min).
- Average sunshine in December: 11h and 6min
The month with the most sunshine is December (Average sunshine: 11h and 6min).
The month with the least sunshine is July (Average sunshine: 6h and 24min).
Average sunshine days in December
Coolac, Australia
- Average sunshine days in December: 18.4 days
The month with the most sunshine days is May (20.4 days).
The month with the least sunshine days is August (14.5 days).
Average UV index in December
Coolac, Australia
- Average UV index in December: 6
The months with the highest UV index are January, February and December (UV index 6).
The months with the lowest UV index are June, July and August (UV index 2).
Average cloud cover in December
Coolac, Australia
- Average cloud cover in December: 23
The month with the most cloud cover is July (Cloud cover 52).
The month with the least cloud cover is January (Cloud cover 18).
Average visibility in December
Coolac, Australia
- Average visibility in December: 9km
The months with the highest visibility are January and February (10km).
The month with the lowest visibility is July (6km).
