December weather forecastAltona, Australia
December
Weather in December
The first month of the summer, December, is a moderately hot month in Altona, Australia, with temperature in the range of an average high of 23.1°C (73.6°F) and an average low of 12.8°C (55°F).Temperature
Altona marks the onset of December with an average high-temperature of a warm 23.1°C (73.6°F), subtly divergent from November's 21.2°C (70.2°F). In the month of December, Altona's average low-temperature falls to a fresh 12.8°C (55°F).Humidity
The average relative humidity in December is 66%.Rainfall
In December, the rain falls for 11.7 days. Throughout December, 39mm (1.54") of precipitation is accumulated. Throughout the year, in Altona, there are 157.6 rainfall days, and 415mm (16.34") of precipitation is accumulated.Daylight
With an average of 14h and 42min of daylight, December has the longest days of the year in Altona.On the first day of the month, sunrise is at 5:52 am and sunset at 8:27 pm. On the last day of December, in Altona, sunrise is at 6:01 am and sunset at 8:46 pm AEDT.
Sunshine
The month with the most sunshine is December, with an average of 9.9h of sunshine.UV index
With an average maximum UV index of 6, December is the month with the highest UV index. A UV Index estimate of 6 to 7 represents a high threat to health from unsafe exposure to UV radiation for the average person.Note: In December, a regular UV index of 6 translates into these guidelines:
Enforce precautions and stick to sun safety measures. Preservation from skin and eye damage is essential. The Sun's UV radiation is at its strongest between the hours of 10 a.m. and 4 p.m. Minimize direct exposure to the sun during this period. To cut down UV radiation exposure by about half, sport a wide-brim hat.
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in December
Altona, Australia
- Average high temperature in December: 23.1°C
The warmest month (with the highest average high temperature) is January (25.1°C).
The month with the lowest average high temperature is July (12.8°C).
- Average low temperature in December: 12.8°C
The month with the highest average low temperature is February (15.2°C).
The coldest month (with the lowest average low temperature) is August (6.8°C).
Average pressure in December
Altona, Australia
- Average pressure in December: 1012.7mbar
The month with the highest atmospheric pressure is June (1021.3mbar).
The month with the lowest atmospheric pressure is January (1012.4mbar).
Average wind speed in December
Altona, Australia
- Average wind speed in December: 11.8km/h
The windiest month (with the highest average wind speed) is August (15km/h).
The calmest month (with the lowest average wind speed) is April (11.3km/h).
Average humidity in December
Altona, Australia
- Average humidity in December: 66%
The month with the highest relative humidity is June (80%).
The month with the lowest relative humidity is January (64%).
Average rainfall in December
Altona, Australia
- Average rainfall in December: 39mm
The wettest month (with the highest rainfall) is November (41mm).
The driest month (with the least rainfall) is March (27mm).
Average rainfall days in December
Altona, Australia
- Average rainfall days in December: 11.7 days
The month with the highest number of rainy days is August (16.6 days).
The month with the least rainy days is January (8.9 days).
Average daylight in December /
Average sunshine in December
Altona, Australia
- Average daylight in December: 14h and 42min
The month with the longest days is December (Average daylight: 14h and 42min).
The month with the shortest days is June (Average daylight: 9h and 36min).
- Average sunshine in December: 9h and 54min
The month with the most sunshine is December (Average sunshine: 9h and 54min).
The month with the least sunshine is August (Average sunshine: 6h and 36min).
Average sunshine days in December
Altona, Australia
- Average sunshine days in December: 17.1 days
The month with the most sunshine days is January (17.8 days).
The month with the least sunshine days is August (11.3 days).
Average UV index in December
Altona, 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 May, June, July and August (UV index 3).
Average cloud cover in December
Altona, Australia
- Average cloud cover in December: 33
The months with the most cloud cover are May and August (Cloud cover 45).
The month with the least cloud cover is January (Cloud cover 30).
Average visibility in December
Altona, Australia
- Average visibility in December: 10km
The months with the highest visibility are January, February, March and December (10km).
The months with the lowest visibility are April, May, June, July, August, September, October and November (9km).
