Friday, 1 September 2023 - Seasonal Climate Summary for Greater Sydney - Product code IDCKGC25L0
Greater Sydney in winter 2023
Rainfall
- Rainfall was below average at all sites across Greater Sydney, ranging from being 23 to 66% of their winter averages.
Temperature
- Maximum temperatures were very much above average, ranging from being 0.7 to 2.3 °C above average.
- Minimum temperatures were around average to above average, ranging from being 0.8 °C below average to 1.7 °C above average.
- More than 10 sites had their highest winter mean daily maximum temperature on record.
- Mangrove Mountain AWS had its lowest winter temperature on record and its lowest winter mean daily minimum temperature on record.
- Mount Boyce AWS had its highest winter mean daily minimum temperature on record.
- Sydney Harbour (Wedding Cake West) had its highest winter mean daily minimum temperature for at least 20 years.
- A number of sites had their highest winter mean temperature on record.
Sydney (Observatory Hill)
- Total rainfall for Sydney (Observatory Hill) was 115.4 mm.
- The mean daily maximum temperature for Sydney (Observatory Hill) was 19.5 °C.
- The warmest day was 27.5 °C on 30 August, and the coolest day was on 28 June when the temperature reached 11.7 °C.
- The mean daily minimum temperature for Sydney (Observatory Hill) was 9.9 °C.
- The coldest morning was 5.1 °C on 20 July, and the warmest morning was on 4 June when the minimum temperature was 14.6 °C.
Extremes Maps Records Summaries Important notes the top
| Extremes in winter 2023 | |
|---|---|
| Hottest day | 27.8 °C at Penrith Lakes AWS on 30 Aug |
| Warmest days on average |
20.3 °C at Penrith Lakes AWS 20.3 °C at Sydney Olympic Park AWS (Archery Centre) |
| Coolest days on average | 11.9 °C at Mount Boyce AWS |
| Coldest day | 4.9 °C at Mount Boyce AWS on 28 Jun |
| Coldest night | -2.9 °C at Camden Airport AWS on 18 Jun |
| Coolest nights on average | 3.8 °C at Camden Airport AWS |
| Warmest nights on average | 11.6 °C at Sydney Harbour (Wedding Cake West) |
| Warmest night | 16.4 °C at Norah Head AWS on 4 Jun |
| Warmest on average overall | 15.2 °C at Norah Head AWS |
| Coolest on average overall | 8.0 °C at Mount Boyce AWS |
| Wettest overall | 166.6 mm at Terrey Hills AWS |
| Wettest day | 75.8 mm at Terrey Hills AWS on 6 Aug |
| Strongest wind gust | 94 km/h at Mount Boyce AWS on 8 Jul |
Extremes Maps Records Summaries Important notes the top
| Record highest winter mean daily maximum temperature | |||||
|---|---|---|---|---|---|
|
New record (°C) |
Old record |
Years of record |
Average for winter |
||
| Sydney Airport AMO | 19.9 | 19.7 | in 2013 | 84 | 17.8 |
| Parramatta North (Masons Drive) | 19.8 | 19.3 | in 2005 | 56 | 18.1 |
| Bankstown Airport AWS | 20.1 | 19.3 | in 2013 | 53 | 18.1 |
| Camden Airport AWS | 19.7 | 19.3 | in 2005 | 45 | 18.1 |
| Mount Boyce AWS | 11.9 | 11.3 | in 2001 | 31 | 10.3 |
| Richmond RAAF | 20.1 | 19.7 | in 2004 | 29 | 18.5 |
| Mangrove Mountain AWS | 18.7 | 17.4 | in 2013 | 28 | 16.4 |
| Norah Head AWS | 19.3 | 19.0 | in 2004 | 28 | 18.2 |
| Badgerys Creek AWS | 19.8 | 19.3 | in 2005 | 27 | 18.2 |
| Canterbury Racecourse AWS | 19.7 | 19.1 | in 2005 | 27 | 18.2 |
| Penrith Lakes AWS | 20.3 | 19.7 | in 2004 | 27 | 18.7 |
| Horsley Park Equestrian Centre AWS | 19.5 | 19.0 | in 2005 | 25 | 18.0 |
| Sydney Harbour (Wedding Cake West) | 18.4 | = 18.4 | in 2013 | 21 | 17.7 |
| Record lowest winter temperature | ||||||
|---|---|---|---|---|---|---|
|
New record (°C) |
Old record |
Years of record |
Average for winter |
|||
| Mangrove Mountain AWS | -1.7 | on 21 Jun | -0.8 | on 30 Aug 2018 | 30 | 6.5 |
| Record highest winter mean daily minimum temperature | |||||
|---|---|---|---|---|---|
|
New record (°C) |
Old record |
Years of record |
Average for winter |
||
| Mount Boyce AWS | 4.1 | 3.9 | in 2005 | 31 | 3.1 |
| Highest winter mean daily minimum temperature for at least 20 years | |||||
|---|---|---|---|---|---|
|
Observed (°C) |
Most recent higher |
Average for winter |
|||
| Sydney Harbour (Wedding Cake West) | 11.6 | 12.0 | in 1999* | 11.1 | |
* note: there are gaps in the historical record at this site, so it is possible a higher value has gone unreported
| Record lowest winter mean daily minimum temperature | |||||
|---|---|---|---|---|---|
|
New record (°C) |
Old record |
Years of record |
Average for winter |
||
| Mangrove Mountain AWS | 5.7 | 5.8 | in 2015 | 28 | 6.5 |
| Record highest winter mean temperature | |||||
|---|---|---|---|---|---|
|
New record (°C) |
Old record |
Years of record |
Average for winter |
||
| Parramatta North (Masons Drive) | 13.6 | 13.5 | in 2013 | 56 | 12.6 |
| Bankstown Airport AWS | 13.2 | 13.1 | in 2016 | 53 | 12.1 |
| Mount Boyce AWS | 8.0 | 7.5 | in 2013 | 31 | 6.7 |
| Mangrove Mountain AWS | 12.2 | = 12.2 | in 2013 | 28 | 11.5 |
| Norah Head AWS | 15.2 | 15.1 | in 2001 | 28 | 14.3 |
| Richmond RAAF | 12.4 | = 12.4 | in 2016 | 28 | 11.5 |
| Badgerys Creek AWS | 12.5 | 12.2 | in 2016 | 27 | 11.5 |
| Penrith Lakes AWS | 13.1 | 12.9 | in 2013 | 27 | 12.4 |
| Horsley Park Equestrian Centre AWS | 13.0 | 12.9 | in 2013 | 25 | 12.2 |
| Sydney Harbour (Wedding Cake West) | 15.0 | = 15.0 | in 2013 | 21 | 14.4 |
Extremes Maps Records Summaries Important notes the top
| Summary statistics for winter 2023 | ||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Maximum temperatures (°C) |
Minimum temperatures (°C) |
Rainfall (millimetres) |
||||||||||
| Mean for winter 2023 |
Diff from average |
Highest for winter 2023 |
Mean for winter 2023 |
Diff from average |
Lowest for winter 2023 |
Total for winter 2023 |
Average for winter |
Rank of winter 2023 |
Fraction of winter average |
|||
| Badgerys Creek AWS | 19.8 | +1.6 | 26.1 | 22 Aug | 5.2 | +0.4 | -1.7 | 19 Jun | 65.6 | 124.8 | average | 53% |
| Bankstown Airport AWS | 20.1 | +2.0 | 27.1 | 22 Aug | 6.3 | +0.3 | 0.3 | 19 Jun | 78.0 | 175.0 | low | 45% |
| Camden Airport AWS | 19.7 | +1.6 | 26.6 | 30 Aug | 3.8 | -0.1 | -2.9 | 18 Jun | 65.0 | 147.1 | low | 44% |
| Campbelltown (Mount Annan) | 19.6 | +1.3 | 26.0 | 30 Aug | 4.7 | -0.1 | -1.6 | 21 Jun | 82.2 | 162.7 | low | 51% |
| Canterbury Racecourse AWS | 19.7 | +1.5 | 26.6 | 30 Aug | 6.2 | -0.2 | 0.0 | 19 Jun | 86.4 | 228.2 | v low | 38% |
| Cooranbong (Lake Macquarie AWS) | 20.2 | +1.2 | 26.9 | 30 Aug | 4.9 | -0.8 | -1.2 | 21 Jun | 100.6 | 215.9 | low | 47% |
| Gosford AWS | 19.4 | +1.0 | 26.7 | 30 Aug | 7.4 | -0.3 | 1.4 | 19 Jun | ||||
| Holsworthy Aerodrome AWS | 19.3 | +1.2 | 26.1 | 30 Aug | 6.1 | 0.0 | -1.2 | 20 Jul | 64.0 | 202.8 | v low | 32% |
| Holsworthy Defence AWS | 19.1 | 25.5 | 30 Aug | 6.6 | 0.2 | 19 Jun | 79.0 | |||||
| Horsley Park Equestrian Centre AWS | 19.5 | +1.5 | 26.1 | 30 Aug | 6.5 | 0.0 | 1.0 | 20 Jul | 92.2 | 157.0 | low | 59% |
| Mangrove Mountain AWS | 18.7 | +2.3 | 26.0 | 30 Aug | 5.7 | -0.8 | -1.7 | 21 Jun | 69.2 | 225.0 | v low | 31% |
| Mount Boyce AWS | 11.9 | +1.6 | 18.6 | 25 Aug | 4.1 | +1.0 | -1.7 | 20 Jun | 107.8 | 182.8 | average | 59% |
| Norah Head AWS | 19.3 | +1.1 | 26.3 | 30 Aug | 11.0 | +0.5 | 6.8 | 19 Jun | 143.0 | 304.7 | v low | 47% |
| Parramatta North (Masons Drive) | 19.8 | +1.7 | 26.0 | 30 Aug | 7.3 | +0.3 | 1.0 | 20 Jul | 79.2 | 194.3 | low | 41% |
| Penrith Lakes AWS | 20.3 | +1.6 | 27.8 | 30 Aug | 5.8 | -0.3 | -0.2 | 21 Jun | 63.2 | 111.7 | average | 57% |
| Richmond RAAF | 20.1 | +1.6 | 27.1 | 30 Aug | 4.6 | +0.1 | -2.8 | 20 Jul | 60.0 | 117.7 | low | 51% |
| Sydney (Observatory Hill) | 19.5 | 27.5 | 30 Aug | 9.9 | 5.1 | 20 Jul | 115.4 | |||||
| Sydney Airport AMO | 19.9 | +2.1 | 27.4 | 30 Aug | 9.8 | +1.7 | 5.3 | 21 Jun | 132.0 | 269.2 | low | 49% |
| Sydney Harbour (Wedding Cake West) | 18.4 | +0.7 | 24.9 | 30 Jul | 11.6 | +0.5 | 6.9 | 20 Jul | ||||
| Sydney Olympic Park AWS (Archery Centre) | 20.3 | +1.4 | 27.5 | 30 Aug | 7.2 | +0.1 | 1.8 | 19 Jun | 54.0 | 232.2 | v low | 23% |
| Terrey Hills AWS | 18.2 | +1.3 | 25.1 | 30 Aug | 9.0 | +0.7 | 3.7 | 21 Jun | 166.6 | 253.3 | low | 66% |
Extremes Maps Records Summaries Important notes the top
Notes
The Seasonal climate summary, usually published in the first week of the following month, lists the main features of the weather in Greater Sydney using the most timely and accurate information available on the date of publication; it will generally not be updated.
This summary includes data from observing sites in or near the Greater Sydney “Greater Capital City Statistical Area” (GCCSA). The Australian Bureau of Statistics designed the GCCSAs to represent a socio-economic definition of each capital city. This means the greater capital city boundary includes people who regularly socialise, shop or work within the capital city, but live in the small towns and rural areas surrounding the capital city. It does not define the built up edge of the capital city.
This statement has been prepared based on information available at 10 am on Friday 1 September 2023. Some checks have been made on the data, but it is possible that results will change as new information becomes available.
In some situations, some or all of the rainfall is in the form of hail or snow. In these cases the totals given are for the water equivalent: the depth of liquid water that results from melting any frozen precipitation. There can be significant 'undercatch' of snow in strong winds, meaning the true precipitation can be higher than that reported.
Averages for individual sites are long-term means based on observations from
all available years of record, which vary widely from site to site.
They are not shown for sites with less than 10 years of record, as they cannot then be calculated reliably.
The median
is sometimes more representative than the
mean
of long-term average rain.
The Rank indicates how rainfall this time compares with the climate record for the site,
based on the
decile ranking
(very low rainfall is in decile 1, low in decile 2 or 3,
average in decile 4 to 7, high in decile 8 or 9
and very high is in decile 10).
The Fraction of average shows how much rain has fallen this time as a
percentage of the long-term mean.
Where temperature area averages are mentioned, they are derived from the ACORN-SAT dataset.
Information about Australian Indigenous seasonal calendars is available at the Indigenous Weather Knowledge website.
Unless otherwise noted, all maps, graphs and diagrams in this page are licensed under the Creative Commons Attribution 4.0 International Licence
