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
As Heidelberg steps into December, the average high-temperature is measured at a warm 23.7°C (74.7°F), displaying minor differences from November's 21.5°C (70.7°F). An average low-temperature of 12.7°C (54.9°F) is observed during December nights.Humidity
The average relative humidity in December is 65%.Rainfall
The months with the most rainfall are August and December, with an average 45mm (1.77") of precipitation.Daylight
The month with the longest days is December, with an average of 14h and 42min of daylight.On the first day of December, sunrise is at 5:51 am and sunset at 8:26 pm. On the last day of the month, sunrise is at 6:00 am and sunset at 8:44 pm AEDT.
Sunshine
With an average of 9.8h of sunshine, December has the most sunshine of the year.UV index
January through March, October through December, with an average maximum UV index of 5, are months with the highest UV index. A UV Index value of 3 to 5 symbolizes a medium vulnerability from unsafe exposure to UV radiation for the average person.Note: In December, the maximum UV index of 5 translates into these guidelines:
Exercise prudence. Persons with fair skin could be burned in under 30 minutes. To guard against the harmful effects of the Sun, minimize exposure during midday. During bright days, sunglasses that offer UVA and UVB defense are recommended.
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?
What is the rainiest month?
How many days does it rain in December in Heidelberg?
When are the longest days?
How many hours of daylight does Heidelberg have in December?
When are sunrise and sunset in December?
What month has the most sunshine?
How many hours of sunshine does Heidelberg have in December?
What is the month with the highest UV index?
What is the UV index intensity in December?
Average temperature in December
Heidelberg, Australia
- Average high temperature in December: 23.7°C
The warmest month (with the highest average high temperature) is January (25.8°C).
The month with the lowest average high temperature is July (12.4°C).
- Average low temperature in December: 12.7°C
The month with the highest average low temperature is February (14.8°C).
The coldest month (with the lowest average low temperature) is August (6.6°C).
Average pressure in December
Heidelberg, Australia
- Average pressure in December: 1012.6mbar
The month with the highest atmospheric pressure is June (1021.4mbar).
The month with the lowest atmospheric pressure is January (1012.3mbar).
Average wind speed in December
Heidelberg, Australia
- Average wind speed in December: 11.1km/h
The windiest month (with the highest average wind speed) is August (13.9km/h).
The calmest month (with the lowest average wind speed) is April (10.6km/h).
Average humidity in December
Heidelberg, Australia
- Average humidity in December: 65%
The month with the highest relative humidity is June (80%).
The month with the lowest relative humidity is January (63%).
Average rainfall in December
Heidelberg, Australia
- Average rainfall in December: 45mm
The wettest months (with the highest rainfall) are August and December (45mm).
The driest months (with the least rainfall) are March and April (34mm).
Average rainfall days in December
Heidelberg, Australia
- Average rainfall days in December: 12.2 days
The months with the highest number of rainy days are July and August (16.9 days).
The month with the least rainy days is January (9.5 days).
Average daylight in December /
Average sunshine in December
Heidelberg, Australia
- Average daylight in December: 14h and 4min
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 5min
The month with the most sunshine is December (Average sunshine: 9h and 48min).
The months with the least sunshine are July and August (Average sunshine: 6h and 30min).
Average sunshine days in December
Heidelberg, Australia
- Average sunshine days in December: 15.5 days
The month with the most sunshine days is January (16.7 days).
The months with the least sunshine days are July and August (10.5 days).
Average UV index in December
Heidelberg, Australia
- Average UV index in December: 5
The months with the highest UV index are January, February, March, October, November and December (UV index 5).
The months with the lowest UV index are May, June, July, August and September (UV index 3).
Average cloud cover in December
Heidelberg, Australia
- Average cloud cover in December: 33
The month with the most cloud cover is July (Cloud cover 49).
The month with the least cloud cover is January (Cloud cover 30).
Average visibility in December
Heidelberg, Australia
- Average visibility in December: 9km
The months with the highest visibility are January, February and March (10km).
The months with the lowest visibility are April, May, June, July, August, September, October, November and December (9km).
