Sydney weather
in December
“The kind of pleasant weather you build a trip around.”
Roughly 10 rainy days across the month, on average.
In december, Sydney settles into its kind, mild rhythm. The city keeps a different pulse than in summer or midwinter, and travellers who arrive with the right expectations are rewarded.
Days average around 26°C (79°F), cooling to 18°C after sunset. Rainfall is moderate — around 10 rainy days spread through the month. Long days of sunshine reward early starts.
These figures are climatological averages, drawn from a decade of daily records via the Open-Meteo Archive — not a forecast. But they are honest, and they are the sort of thing a good travel guide ought to tell you before you book the flight.
What to pack for Sydney in December
- •A compact travel umbrella — one you'll actually carry
- •Reef-safe sunscreen and polarised sunglasses
- •Comfortable, broken-in walking shoes
- •A small daypack that won't look like a tourist beacon
What to pack for Sydney in December
- →Quick-dry travel shirtAmazon · shop this
- →UPF sun hatAmazon · shop this
- →Compact travel umbrellaAmazon · shop this
- →Reef-safe sunscreen SPF 50Amazon · shop this
- →Polarized sunglassesAmazon · shop this
- →Universal travel adapterAmazon · shop this
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Where to stay in Sydney
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Sydney in December — FAQ
Q01Is December a good time to visit Sydney?
Is December a good time to visit Sydney?
Yes — it is a good time to visit, with pleasant, comfortable weather. In December, Sydney averages a high of 26°C (79°F) and a low of 18°C (64°F), with 66mm of rainfall across roughly 10 rainy days.
Q02What is the average temperature in Sydney in December?
What is the average temperature in Sydney in December?
The average high temperature in Sydney during December is 26°C (79°F), with an average low of 18°C (64°F). These figures are averaged from ten years of daily records (2015–2024, Open-Meteo Archive).
Q03How many rainy days does Sydney have in December?
How many rainy days does Sydney have in December?
Sydney averages approximately 10 rainy days in December, with a total monthly rainfall of about 66mm. This is based on daily precipitation records where days with 1mm or more of rain are counted as rainy days.
Q04What should I pack for Sydney in December?
What should I pack for Sydney in December?
For Sydney in December, pack a compact umbrella or waterproof jacket, sunscreen and sunglasses, comfortable walking shoes. These recommendations are based on the ten-year weather averages for this specific month.
Q05How crowded is Sydney in December?
How crowded is Sydney in December?
Tourist crowds in Sydney during December are typically moderate — winter is high season for tropical destinations. Consider this when planning accommodation — prices track crowd levels closely.