Melbourne Weather in December
Australia · Oceanic climate · Data averaged from 2020-01-01 to 2024-12-31 (5 years)
December in Melbourne sees average temperatures ranging from a low of 12.6°C (54.7°F) to a high of 23.7°C (74.7°F), with a mean of 18.0°C (64.4°F). Compared to the annual average of 14.6°C (58.3°F), this month is 3.4°C warmer than the yearly norm. Precipitation averages 74.4mm, making it approximately 2.0mm wetter than the monthly average of 72.0mm. The city receives an average of 11.5 hours of sunshine per day during December, with relative humidity averaging 66.8%. Wind speeds reach an average maximum of 22.3 km/h. For travelers, this month offers a temperature experience in Melbourne, with wetter-than-average conditions compared to the rest of the year.
Melbourne's data reveals Australia's most unpredictable major city — four seasons in a day isn't a cliché, it's a statistical reality. I tracked a week there in November: 28°C Monday, 14°C Tuesday with rain, 22°C Wednesday. Annual mean of 15°C masks wild daily swings. The numbers favor February-March: 20-22°C, low rain, manageable UV. October-November is statistically pleasant but unpredictable. Summer (December-February) can hit 40°C; winter (June-August) dips to 6°C. Melbourne averages 600mm of rain spread evenly — 50mm monthly — so always carry a layer. The data says spring (October) is the smart traveler's pick.
December vs Adjacent Months
| Metric | November | December | January |
|---|---|---|---|
| Mean Temp | 16.5°C (61.7°F) | 18.0°C (64.4°F) | 20.3°C (68.5°F) |
| Rainfall | 91.1mm | 74.4mm | 95.1mm |
| Sunshine | 10.5 hrs | 11.5 hrs | 10.8 hrs |
| Humidity | 69.7% | 66.8% | 68.5% |
| Wind | 21.8 km/h | 22.3 km/h | 22.2 km/h |
| Rainy Days | 18.0 | 16.6 | 13.0 |
Seasonal Context
December falls in Winter in the Northern Hemisphere. Winter is the coolest season with the shortest daylight hours. For travelers visiting Melbourne in December, the data indicates favorable conditions based on the combination of temperature, precipitation, and daylight hours.
Frequently Asked Questions
What is the average temperature in Melbourne in December?
The average temperature in Melbourne during December ranges from 12.6°C (54.7°F) to 23.7°C (74.7°F), with a mean of 18.0°C (64.4°F).
How much does it rain in Melbourne in December?
Melbourne receives an average of 74.4mm of precipitation in December, spread across approximately 16.6 rainy days.
What should I pack for Melbourne in December?
Based on December weather data, pack layers including light jackets and t-shirts, plus an umbrella.
Is December a good time to visit Melbourne?
December is a good time to visit Melbourne, with comfortable temperatures and manageable rainfall.
Other Months for Melbourne
Cities with Similar December Climate (Oceanic)
Data Source: Open-Meteo historical archive (2020-01-01 to 2024-12-31). Daily measurements aggregated into monthly climate normals. Coordinates: -37.81°, 144.96°. Timezone: Australia/Melbourne. Last updated: 2026-07-30.