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Live forecasts update automatically; written guidance last reviewed 23 June 2026 by the Southern Monitor Weather Desk. Data from the Bureau of Meteorology (BOM) and other national met services via Open-Meteo.
Christmas Day in Sydney is forecast to be warm and mostly sunny, with a top temperature in the low thirties Celsius. The live forecast above shows the current expected conditions, but always check the Bureau of Meteorology for updates on the day.
What will the weather be like on Christmas Day in Sydney?
Expect a classic Sydney summer Christmas. The day will likely be hot and humid, with a chance of a late afternoon sea breeze or a possible thunderstorm. The live forecast above gives the most accurate temperature range for your plans.
How does this compare to typical December weather in Sydney?
December in Sydney averages around 26°C, but Christmas Day often runs hotter. The live forecast above shows if this year is above or below that average. For a broader look at the month, see our Sydney Weather page.
Will it rain on Christmas Day in Sydney?
The live forecast above shows the chance of rain. A late storm is possible, but most Christmas Days in Sydney are dry. Check the Bureau of Meteorology radar on the day for real-time updates.
What is the UV level on Christmas Day in Sydney?
UV levels are typically extreme in December, often reaching 11 or higher. Slip, slop, slap before heading outdoors. The live forecast above may include a UV index reading.
How does Boxing Day weather compare to Christmas Day?
Boxing Day in Sydney is usually similar to Christmas Day—warm and sunny. The live forecast above is for Christmas Day only. For Boxing Day, check our Sydney Weather page closer to the date.