December weather - Summer 2024 - Melbourne, Australia

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 sea temperature 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

Melbourne city, Australia with a view of the Federation square across the Yarra River

Weather in December

Welcoming Summer, December's transition breathes warmth into Melbourne as daytime temperatures reach a monthly average high of 23.7°C (74.7°F). Sea temperatures continue to rise, inviting locals and tourists to participate in water sports or beach outings. The noticeably lengthened hours of daylight and an equal increase in sunshine hours make December in Melbourne particularly conducive for outdoor activities. Nonetheless, the wind speeds slightly increase to level out at 11.1 Kph. Crowning the year with festive cheer and sunny warmth, Melbourne in December symbolizes the charm of an Australian Summer.

Temperature

The beginning of December in Melbourne records an average high-temperature of a warm 23.7°C (74.7°F), marking a negligible difference from November's 21.5°C (70.7°F). During December, the nighttime temperature averages of 12.7°C (54.9°F).

Humidity

In December, the average relative humidity is 65%.

Rainfall

The wettest months in Melbourne are August and December, with an average 45mm (1.77") of rainfall.

Sea temperature

In Melbourne, in December, the average water temperature is 17.5°C (63.5°F).
Note: Swimming is not an enjoyable activity for the majority when the water is at 17.5°C (63.5°F). The difficulty of controlling breathing increases as the temperature dips from 21°C (69.8°F) to 15°C (59°F).

Daylight

December has the longest days of the year in Melbourne, 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 8:45 pm AEDT.

Sunshine

With an average of 9.8h of sunshine, December has the most sunshine of the year in Melbourne.

UV index

January through March, October through December, with an average maximum UV index of 5, are months with the highest UV index in Melbourne. A UV Index estimate of 3 to 5 represents a medium vulnerability from exposure to the Sun's UV rays for ordinary individuals.
Note: The maximum UV index, 5 during December, leads to the following recommendations:
Ensure safety - Imperative it is to shield skin and eyes from damage. To prevent harmful UV exposure, minimize direct contact with the Sun around midday. Employ a hat with a wide brim for robust protection, cutting UV exposure by half.

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Frequently asked questions

What is the usual temperature for Melbourne in December?

In Melbourne, 23.7°C (74.7°F) is the average high-temperature and 12.7°C (54.9°F) is the average low-temperature during December.

What is the average humidity in December in Melbourne?

In Melbourne, Australia, the average relative humidity in December is 65%.

What is the rainiest month in Melbourne?

The wettest months in Melbourne, Australia, are August and December, with an average 45mm (1.77") of rainfall.

How much does it rain in Melbourne in December?

In Melbourne, in December, it is raining for 12.2 days, with typically 45mm (1.77") of accumulated precipitation.

How cold is the water in December in Melbourne?

In December, the average sea temperature in Melbourne is 17.5°C (63.5°F). For swimming, a surface water temperature of 17.5°C (63.5°F) is not enjoyable for the majority. It is not considered safe, as controlling breathing becomes progressively more difficult as water temperature decreases below 21°C (69.8°F).

When are the longest days in Melbourne?

December has the longest days of the year in Melbourne, Australia, with an average of 14h and 42min of daylight.

What is the average length of the day in December in Melbourne?

In Melbourne, Australia, the average day length in December is 14h and 44min.

When are sunrise and sunset in December in Melbourne?

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 8:45 pm AEDT.

What month has the most sunshine in Melbourne?

December has the most sunshine of the year in Melbourne, with an average of 9.8h of sunshine.

How many hours of sunshine does Melbourne have in December?

In Melbourne, the average sunshine duration in December is 9.8h.

When is the highest UV index in Melbourne?

The months with the highest UV index in Melbourne are January through March, October through December, with an average maximum UV index of 5.

What is the UV index intensity in December in Melbourne?

In December, the average daily maximum UV index is 5. A UV Index estimate of 3 to 5 represents a medium health risk from unprotected exposure to UV radiation.

Today

Tomorrow

Long-term

Year J F M A M J J A S O N December

Nov

December

Jan

Average high temperature

21.5°C 70.7°F

23.7°C 74.7°F

25.8°C 78.4°F

Average low temperature

Average pressure

Average wind speed

Average max. wind speed

12.2km/h 7.6mph

12.4km/h 7.7mph

Average wind speed gusts

Average humidity

Average rainfall

Average rainfall days

13.5

12.2

9.5

Average sea temperature

Average daylight

Average sunshine

Average sunshine days

13.1

15.5

16.7

Average UV index

Average cloud cover

Average visibility

Average temperature in December
Melbourne, 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).

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Average pressure in December
Melbourne, 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).

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Average wind speed in December
Melbourne, 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).

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Average humidity in December
Melbourne, 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%).

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Average rainfall in December
Melbourne, 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).

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Average rainfall days in December
Melbourne, 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).

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Average sea temperature in December
Melbourne, Australia

Average sea temperature in December: 17.5°C

The best month for swimming (with the highest average sea temperature) is February (18.8°C).
The coldest month (with the lowest average sea temperature) is September (14.7°C).

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Average daylight in December /
Average sunshine in December
Melbourne, 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).

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Average sunshine days in December
Melbourne, 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).

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Average UV index in December
Melbourne, 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).

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Average cloud cover in December
Melbourne, 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).

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Average visibility in December
Melbourne, 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).

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December weather forecast
Melbourne, Australia

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