Sydney Harbour, New South Wales
December 2025 Daily Weather Observations

DateDayTempsRainEvapSunMax wind gust9 am3 pm
MinMaxDirSpdTimeTempRHCldDirSpdMSLPTempRHCldDirSpdMSLP
°C°Cmmmmhourskm/hlocal°C%8thkm/hhPa°C%8thkm/hhPa
1Mo16.423.4   NW6514:4419.9  NW19 22.8  WNW28 
2Tu14.219.5   SSE5411:0016.4  SSW35 18.5  S35 
3We15.321.5   NNE5017:4318.7  WSW7 20.8  NE30 
4Th18.024.5   NNE4816:0521.1  NE11 23.8  ENE22 
5Fr19.231.0   NNE5017:2222.5  SW4 26.5  NNE20 
6Sa21.832.2   NNE6716:3223.6  NNE9 25.2  N26 
7Su19.8       20.1  S35 20.1  SSE24 
Statistics for the first 7 days of December 2025
Mean17.825.4      20.3   17 22.5   26 
Lowest14.219.5      16.4  SW4 18.5  NNE20 
Highest21.832.2   NNE67 23.6  #35 26.5  S35 
Total                    

IDCJDW2163.202512   Prepared at 05:36 UTC on Sunday 7 December 2025

Source of data

Observations were drawn from Sydney Harbour (Wedding Cake West) {station 066196}.

You should read the important information in these notes.

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Other times and other places

The last 14 months of Daily Weather Observations for Sydney Harbour, New South Wales are also here on this web site:

Dec 25   Nov 25   Oct 25   Sep 25   Aug 25   Jul 25   Jun 25   May 25   
Apr 25   Mar 25   Feb 25   Jan 25   Dec 24   Nov 24   

Daily Weather Observations are also routinely prepared for hundreds of other locations in New South Wales and across Australia. To get other months or places not on this web site, contact us.

Maps and tables of average conditions for locations across Australia are also available.

More information

If you are using these pages, you are deemed to have understood the important information in these notes. They cover how the data are obtained, how they are processed, and what each column means.

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