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 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
December
Weather in December
Temperature
December begins with an average high-temperature of a moderately hot 23.7°C (74.7°F), reflecting close similarity to the preceding month. Throughout the December nights, Port Melbourne encounters a low-temperature of 12.7°C (54.9°F).Humidity
In December, the average relative humidity in Port Melbourne, Australia, is 65%.Rainfall
The wettest months in Port Melbourne, Australia, are August and December, with an average 45mm (1.77") of rainfall.Sea temperature
In Port Melbourne, the average seawater temperature in December is 17.5°C (63.5°F).Note: Swimming is not enjoyable for most people in water that is 17.5°C (63.5°F). As the temperature descends from 21°C (69.8°F) to 15°C (59°F), breathing control becomes harder.
Daylight
December has the longest days of the year in Port Melbourne, with an average of 14h and 42min of daylight.On the first day of the month, sunrise is at 5:51 am and sunset at 8:26 pm. On the last day of December, in Port Melbourne, sunrise is at 6:00 am and sunset at 8:45 pm AEDT.
Sunshine
The month with the most sunshine in Port Melbourne is December, with an average of 9.8h of sunshine.UV index
The months with the highest UV index in Port Melbourne are January through March, October through December, with an average maximum UV index of 5. A UV Index estimate of 3 to 5 represents a moderate threat to health from exposure to the Sun's UV rays for ordinary individuals.Note: The maximum UV index of 5 during December leads to these instructions:
Ensure safety - Recommendations to avert sunburn are presented. Avoiding the Sun during its peak radiation time around midday is a healthy practice. Employ a hat with a wide brim for robust protection, cutting UV exposure by half.
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What is the temperature in December in Port Melbourne?
What is the average humidity in December in Port Melbourne?
What is the wettest month in Port Melbourne?
How much does it rain in Port Melbourne in December?
What is the sea temperature in December in Port Melbourne?
When are the longest days in Port Melbourne?
How many hours of daylight does Port Melbourne have in December?
What time are sunrise and sunset in December in Port Melbourne?
What month has the most sunshine in Port Melbourne?
How long on average sun shines in December in Port Melbourne?
What is the month with the highest UV index in Port Melbourne?
How high is the UV index in December in Port Melbourne?
Average temperature in December
Port 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).
Average pressure in December
Port 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).
Average wind speed in December
Port 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).
Average humidity in December
Port 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%).
Average rainfall in December
Port 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).
Average rainfall days in December
Port 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).
Average sea temperature in December
Port 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).
Average daylight in December /
Average sunshine in December
Port 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).
Average sunshine days in December
Port 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).
Average UV index in December
Port 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).
Average cloud cover in December
Port 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).
Average visibility in December
Port 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).
