Sydney in September 2014: Cool start, hot finish

September rainfall was generally average to below average across the Sydney region, with slightly above average sunshine. While Sydney Observatory Hill recorded 17 rain days, well above the average of 11 days, only eight recorded more than 1 mm (average 7 days). Most of the rain fell during the first half of the month, with heaviest falls in coastal Sydney on the 6th and 7th associated with onshore easterly flow. Fast-moving severe thunderstorms also produced localised heavy rain on the 25th, with 24 mm recorded at Seven Hills.

Daytime temperatures were 1.9 °C above average at Sydney Observatory Hill, but generally average to below average in western Sydney. Temperatures were cool during the first half of the month, while strong northerly winds resulted in very warm conditions across the city on the 29th and 30th. This was the earliest instance with two consecutive days above 32 °C on record for Sydney Observatory Hill, with 33.5 °C on the 30th the equal-fifth-warmest September day. Minimum temperatures were also generally average to above average during September, associated with continued warm sea surface temperatures.

  • Early-season record for consecutive days above 32 °C.
  • Heavy morning fog on the 8th.
  • Strong winds and 6m swell on the 3rd.

Further information

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Extremes in September 2014
Hottest day 35.0 °C at Penrith Lakes AWS on the 30th
Warmest days on average 23.1 °C at Penrith Lakes AWS
Coolest days on average 19.8 °C at Terrey Hills AWS
Coldest day 14.4 °C at Terrey Hills AWS on the 3rd
14.4 °C at Springwood (Valley Heights) on the 12th
Coldest night 2.1 °C at Camden Airport AWS on the 19th
Coolest nights on average 7.7 °C at Campbelltown (Mount Annan)
Warmest nights on average 12.3 °C at Sydney (Observatory Hill)
12.3 °C at Sydney Airport AMO
Warmest night 19.1 °C at Springwood (Valley Heights) on the 30th
Warmest on average overall 17.1 °C at Sydney (Observatory Hill)
Coolest on average overall 14.7 °C at Campbelltown (Mount Annan)
Wettest overall 100.2 mm at Collaroy (Long Reef Golf Club)
Driest overall 12.0 mm at Milperra Bridge (Georges River)
Wettest day 41.8 mm at Collaroy (Long Reef Golf Club) on the 6th
Strongest wind gust 93 km/h at Little Bay (The Coast Golf Club) on the 3rd

Summary statistics for September 2014
Maximum temperatures
(°C)
Minimum temperatures
(°C)
Rainfall
(millimetres)
Mean for
September
2014
Diff
from
average
Highest for
September
2014
Mean for
September
2014
Diff
from
average
Lowest for
September
2014
Total for
September
2014
Average
for
September
Rank of
September
2014
Fraction of
September
average
Badgerys Creek AWS 21.7 -1.0 33.5 30th 8.6 +0.9 3.2 19th 20.8 33.9 low 61%
Bankstown Airport AWS 22.2 +0.6 34.6 30th 9.5 +0.8 5.3 19th 18.6 43.8 average 42%
Camden Airport AWS 22.2 +0.2 33.2 30th 7.8 +1.0 2.1 19th 22.8 39.1 average 58%
Campbelltown (Mount Annan) 21.9   32.5 30th 7.7   3.1 19th 14.2
Canterbury Racecourse AWS 21.2 -0.9 33.5 30th 9.7 +0.3 5.6 20th 38.4 45.7 average 84%
Holsworthy Aerodrome AWS 21.9   34.1 30th 8.9   4.5 19th 15.6
Horsley Park Equestrian Centre AWS 21.5 -1.0 33.3 30th 9.2 -0.2 3.6 19th 16.8 36.1 low 47%
Parramatta North (Masons Drive) 21.9 +0.2 33.6 30th 9.8 +0.5 5.0 19th 35.6 52.8 average 67%
Penrith Lakes AWS 23.1 -0.3 35.0 30th 9.8 +0.4 4.9 20th 18.8 31.9 low 59%
Prospect Reservoir 22.3 +0.9 33.5 30th 9.8 +0.4 4.9 19th 28.9 46.6 average 62%
Richmond RAAF 22.7 -0.2 34.0 30th 8.8 +0.8 2.8 19th 19.4 47.0 low 41%
Springwood (Valley Heights) 20.7   32.5 30th     5.8 3rd 30.2 55.2 average 55%
Sydney (Observatory Hill) 21.9 +1.9 33.5 30th 12.3 +1.2 8.8 5th 50.4 68.3 average 74%
Sydney Airport AMO 21.5 +0.9 34.2 30th 12.3 +1.9 8.7 3rd 41.4 60.2 average 69%
Terrey Hills AWS 19.8 -1.2 31.6 30th 10.6 -0.8 6.2 19th 71.0 62.1 average 114%

Daily maximum temperatures for September 2014
123456789101112131415161718192021222324252627282930
Badgerys Creek AWS22.916.817.117.217.016.917.520.024.422.625.116.420.125.022.023.620.419.720.620.120.921.423.126.321.420.821.925.831.433.5
Bankstown Airport AWS24.118.117.217.818.017.918.120.525.223.525.417.418.724.822.524.321.719.820.719.320.521.623.127.123.220.321.326.231.934.6
Camden Airport AWS23.617.017.818.917.818.218.521.225.323.424.716.821.025.022.722.120.720.420.420.921.522.123.527.021.121.622.426.232.033.2
Campbelltown (Mount Annan)23.816.917.019.218.219.117.921.423.922.924.417.220.925.422.321.920.119.920.020.421.621.623.226.622.320.821.431.332.5
Canterbury Racecourse AWS23.817.316.216.916.717.317.819.924.423.024.916.718.524.320.822.321.118.120.318.219.420.321.725.623.819.119.524.631.433.5
Holsworthy Aerodrome AWS23.018.116.717.517.318.118.420.227.723.324.916.418.924.721.322.820.719.720.118.719.821.322.926.123.919.921.026.032.134.1
Holsworthy Control Range23.517.316.618.117.318.218.2
Horsley Park Equestrian Centre AWS23.617.717.117.017.217.617.420.824.422.625.316.919.624.721.923.720.819.320.320.120.921.423.026.723.120.721.225.633.3
Parramatta North (Masons Drive)23.418.017.017.618.017.617.820.225.023.625.717.018.725.221.824.321.319.620.219.320.621.523.226.823.419.821.025.731.333.6
Penrith Lakes AWS24.419.618.418.918.017.417.821.625.924.026.017.421.825.523.225.422.121.221.321.721.922.624.526.623.622.123.327.932.535.0
Prospect Reservoir24.217.916.917.217.517.817.520.825.322.925.717.019.825.623.024.021.220.521.020.521.422.423.727.923.420.822.426.531.933.5
Richmond RAAF24.119.318.617.918.416.818.021.025.524.025.718.521.125.522.824.721.819.920.420.720.922.123.727.324.421.822.527.131.834.0
Riverview Observatory24.217.716.216.317.117.719.724.422.925.216.824.420.922.422.019.020.620.023.724.831.7
Springwood (Valley Heights)23.518.016.615.515.615.016.018.524.822.424.414.418.622.820.523.219.518.618.519.019.020.221.524.521.219.520.526.330.232.5
Sydney (Observatory Hill)23.618.416.717.618.219.119.019.523.124.425.818.417.622.620.121.722.220.522.220.320.920.221.222.224.621.722.825.432.933.5
Sydney Airport AMO25.217.815.115.215.817.717.220.824.223.426.516.818.724.221.123.222.418.020.917.919.120.122.825.724.018.920.325.233.534.2
Terrey Hills AWS22.417.114.415.215.414.916.617.821.921.022.816.417.423.019.121.220.217.118.117.317.518.320.124.623.218.618.722.530.431.6
Values are the maximum temperature, usually in the 24 hours from 9 am on the day indicated,
and typically occurred in the afternoon of that day.
Temperatures coloured according to their difference
from the long-term average for the period
-10.0 -9.0 -8.0 -7.0 -6.0 -5.0 -4.0 -3.0 -2.0 -1.0 0.0 +1.0 +2.0 +3.0 +4.0 +5.0 +6.0 +7.0 +8.0 +9.0 +10.0 °C Grey outline marks highest
and lowest for the period

Daily minimum temperatures for September 2014
123456789101112131415161718192021222324252627282930
Badgerys Creek AWS6.712.48.37.28.78.410.37.45.711.16.810.911.79.19.811.89.16.23.23.67.89.55.67.413.78.910.76.78.610.1
Bankstown Airport AWS7.513.38.47.98.48.210.17.86.913.77.913.211.69.610.512.210.68.25.35.79.39.76.47.614.511.211.57.110.111.8
Camden Airport AWS4.811.48.09.19.26.29.15.85.110.26.111.211.99.18.011.912.47.02.12.34.18.44.26.012.88.09.15.87.18.9
Campbelltown (Mount Annan)7.611.67.36.17.07.17.96.36.311.45.610.311.48.18.211.511.74.43.13.44.87.65.25.813.28.09.25.38.6
Canterbury Racecourse AWS8.012.48.68.78.68.910.28.48.013.76.413.412.19.310.112.79.56.35.95.610.08.37.08.214.213.111.58.010.112.4
Holsworthy Aerodrome AWS6.911.57.77.37.97.79.57.17.813.07.212.111.49.410.012.311.76.54.54.67.78.35.47.114.49.810.36.19.810.9
Holsworthy Control Range7.311.77.87.28.18.09.47.1
Horsley Park Equestrian Centre AWS7.811.88.27.29.89.510.07.08.212.96.312.111.69.811.211.78.46.33.65.39.58.96.78.015.09.710.97.612.5
Parramatta North (Masons Drive)8.714.28.08.79.38.69.98.48.713.09.612.610.29.110.211.811.77.25.05.29.08.57.48.015.511.011.07.713.413.0
Penrith Lakes AWS7.712.58.88.110.711.210.88.78.112.67.311.612.09.412.312.010.26.35.04.99.311.17.28.714.210.712.68.510.211.9
Prospect Reservoir7.812.88.78.79.79.510.29.58.413.07.712.610.010.310.611.810.07.14.95.09.58.86.88.014.810.510.58.713.813.2
Richmond RAAF6.011.29.05.39.99.910.78.66.013.55.910.911.99.19.610.910.84.62.83.08.99.74.56.612.59.612.06.911.511.0
Riverview Observatory9.211.08.49.28.39.19.010.513.310.013.111.810.713.511.610.47.17.07.19.49.214.6
Springwood (Valley Heights)7.111.65.86.87.27.68.47.27.810.87.59.99.58.89.28.614.19.710.28.214.419.1
Sydney (Observatory Hill)10.714.18.99.88.810.311.210.912.214.012.113.912.912.913.115.213.312.29.29.110.912.310.911.717.414.313.011.616.516.6
Sydney Airport AMO10.715.08.79.09.212.111.910.812.714.211.314.313.612.913.314.813.010.99.08.711.312.510.712.017.813.913.311.315.315.7
Terrey Hills AWS7.913.17.28.68.59.49.99.110.612.49.011.610.711.211.013.110.79.76.26.89.010.19.911.115.712.611.810.714.517.2
Values are the minimum temperature, usually in the 24 hours to 9 am on the day indicated,
and typically occurred that morning.
Temperatures coloured according to their difference
from the long-term average for the period
-10.0 -9.0 -8.0 -7.0 -6.0 -5.0 -4.0 -3.0 -2.0 -1.0 0.0 +1.0 +2.0 +3.0 +4.0 +5.0 +6.0 +7.0 +8.0 +9.0 +10.0 °C Grey outline marks highest
and lowest for the period

Daily rainfall for September 2014
123456789101112131415161718192021222324252627282930
Abbotsbury (Fairfield (City Farm)) 1.0 - - - - 2.0 3.0 - - 7.0 - - - - - 1.0 - - - - - - - - 1.0 4.0 - 1.0 - -
Abbotsford (Blackwall Point Rd) - - 3.0 - 2.0 5.0 28.0 - - 6.0 - - - - - - - - - - - - - - - 5.0



Audley (Royal National Park) 1.0 - 4.0 - 3.0 7.0 4.0 4.0 - 9.0 - - - 1.0 - - 1.0 - - - - - - - - 1.0 - - - -
Avalon (Wollstonecraft Ave) - - 2.0 - 8.0 20.0 21.0 3.0 - 8.0 - - 9.0 - - - - - - - - - - - - 8.0 - - - -
Avalon Beach (Avalon (Palmgrove Rd)) - - 2.0 - 19.2 26.8 3.8 - 7.3 - - 7.4 - - 0.6













Badgerys Creek AWS - - 2.4 - - 1.4 1.2 2.0 - 8.0 - - - - - - 0.4 - - - - - - - 0.4 5.0 - - - -
Bankstown Airport AWS - - 1.6 - 0.6 4.2 2.0 0.2 - 6.8 - - - - - -
- - - - - - - - 3.2 - - - -
Baulkham Hills Eucalyptus Ct - - 1.0 - 0.5 1.5 13.5 1.5 - 7.5 - - - - - - - - - - - - - - - 15.5 - - - -
Belrose (Evelyn Place) - - 3.4 - 2.2 18.0 26.8 2.0 - 7.8 - 0.6 3.0 - - 0.8 1.2 - - - 0.6 0.4 - - 0.2 10.0 0.8


Berowra (Goodwyn Road) - - 1.6 - 1.0 16.2 13.8 3.2 - 4.4 - - 7.0 - - - - - - - 0.6 - - - - 19.6



Box Hill (Hynds Road) - - 1.0 - - 1.0 5.0 1.0 - 6.0 - - - - - 1.0 - - - - - - - - 1.0 3.0 - - - -
Camden Airport AWS 0.2 - 1.8 - - 5.0 - 0.2 0.2 6.6 - - - - - - 1.6 - - - - - - - 0.4 6.6 0.2 - - -
Campbelltown (Kentlyn (Georges River Roa 1.0 - 3.0 - - 1.0 2.0 - - 8.0 - - - - - 1.0 4.0 - - - - - - - - 4.0 - - - -
Campbelltown (Mount Annan) - - 4.8 - - 0.2 0.8 1.6 - 6.4
- - - - -
- - - -
- - 0.2
0.2 -
-
Canterbury Racecourse AWS
- 1.8 - 0.8 4.6 14.6 4.4 - 5.8 - 0.2 - 0.2 - 0.2
- - - - - - - - 5.8 - - - -
Castle Cove (Rosebridge Ave) - - 5.0 1.0 3.0 21.0 23.0 2.5 - 7.0 - 1.0 1.0 3.0 - 0.5 - - - - 1.0 - - - - 5.0



Chatswood Bowling Club - - 4.0 - 2.0 8.0 15.0 1.0 - 6.0 - - 1.0 1.0 - - - - - - - - - - - 10.0 1.0 - - -
Collaroy (Long Reef Golf Club)

4.2
11.6 41.8 18.4 3.2
6.6

1.8 2.4
1.2








9.0



Concord (Brays Rd) - - 2.0 - 0.8 4.6 26.8 - - 7.2 0.2 - - 1.0 - - 0.2 - - - - - - - - 4.2



Concord Golf Club - - 2.2 - 1.0 4.0 26.6 0.6 - 7.2 - - - 1.2 - 0.4 - - - - 0.2








Cronulla South Bowling Club

8.8
6.0 4.0
8.2
6.0



















Frenchs Forest (Frenchs Forest Rd) 1.0 - 5.0 - 5.0 21.0 27.0 2.0 - 8.0 - - 2.0 1.0 - - 1.0 - - - 1.0 - - - - 4.0 1.0 - - -
Glenorie (Old Northern Rd)

3.0

4.0 8.0

9.0

2.0











4.6



Holsworthy Aerodrome AWS - - 1.6 - 0.2 1.8 0.4 0.4 - 6.0 - - - - 2.0 -
- - - - - - - 0.4 2.8 - - - -
Holsworthy Control Range - 0.2 1.4 - 0.2 1.2 0.4 1.8





















Horsley Park Equestrian Centre AWS - - 0.6 - - 1.0 1.8 0.2 0.2 6.6 - - 0.2 - - 0.2 0.6 - - - - - - - 1.2 4.2 - - -
Lucas Heights (ANSTO) - - 2.4 - 2.2 3.0 2.0 1.6 - 7.8 - - - 0.2 - - 1.1 - - - - - - - 0.3 1.8



Marrickville Golf Club - - 3.0 - 3.0 7.0 21.0 1.0 - 6.0 - - - - - - - - - - - - - - - 7.0 - - - -
Milperra Bridge (Georges River) - - - - - 3.0 2.0 - - 5.0 - - - - - - - - - - - - - - - 2.0 - - - -
Mona Vale Golf Club 0.4 - 2.4 - 8.8 17.4 25.2 2.4 - 6.4 - 1.4 2.8 0.2 - 0.4 - - - - - - 0.2 0.2 0.2 13.6 - 0.2 - -
Mount Annan Botanic Garden - - 4.8 - - 4.0 1.0 1.8 - 6.8 - - - - - - 13.2 - - - - - - - - 8.6 - - - -
North Parramatta (Burnside Homes) - - 1.0 - 0.5 2.0 10.0 0.5 - 8.5 - - 0.5 - - - - - - - - - - - - 6.0 - - - -
North Rocks (Muirfield Golf Club) - - 1.0 - 0.5 2.5 16.5 1.0 - 6.5 - - 1.0 - - - - - - - - - - - - 19.5 - - - -
Oatley (Woronora Parade)

4.0
1.6



















2.6



Parramatta North (Masons Drive) - 0.2 1.4 - 1.0 2.0 13.2 1.0 - 8.2 - - 0.8 0.2 - 0.4 - - - - - - - - 0.2 7.0
- - -
Peakhurst Golf Club - - 2.0 - - 3.0 4.0 1.0 - 6.0 - - - - 2.0 - - - - - - - - - - 2.0 - - - -
Pennant Hills (Yarrara Road) 0.2 - 1.4 - 1.0 3.8 15.2 1.2 0.2 6.2 - 0.4 2.2 - - 0.4 0.6 - - - 0.2 - - - 0.4 8.2 - - - -
Penrith Lakes AWS 0.2 - 1.0 - - 1.2 2.2 0.6 - 6.6 0.2 - - - - -
- - - - - - - 0.2 6.6 - - - -
Prospect Reservoir - - 1.3 - 0.1 0.8 6.7 2.6 - 6.2 - - 0.4 - - 0.2 0.2 - - - - - - - 0.7 9.7 - - - -
Randwick (Randwick St) - - 10.0 - 5.2 11.8 29.2 1.4 - 6.4 - 1.0 1.4 - 0.6 0.2 - - - 1.4 - - - - 9.6 - - -
Richmond RAAF - - 0.6 - - 0.2 3.2 0.4 - 7.8 0.2 - - - 0.2 - 0.2 - - - - - - - - 6.2 0.4 - - -
Riverview Observatory - - 2.8 - 2.6 25.6 1.2 - 6.0 - 0.4 0.8 0.8 - 0.2 0.4 - - - - - - - -


- -
Rossmore (South Creek) - - 3.0 - - 2.0 - - - 7.0 - - - - - - - - - - - - - - - 3.0 - - - -
Sans Souci (Public School) - - 5.0 1.0 2.0 7.0 7.0 6.0 - 6.0 - - - - 8.0 - - - - - 1.0 - - - - 1.0 - - - -
Seven Hills (Radio FM 103.2) - - 1.0 - - 1.0 7.0 4.5 0.5 5.0 0.5 - - - - - - - - - - - - - 0.5 8.0 - - - -
Seven Hills (Collins St)

2.8

1.8 9.0 1.8
6.6














24.0



Springwood (Valley Heights) - - 2.4 - 0.2 0.4 4.2 1.0 - 8.4 - 0.2 1.0 - - 0.8 - - - - - - - - 0.2 11.4 - - - -
St Ives (Richmond Avenue) - - - - - - - - - - - 0.6 2.8

0.4 2.6


1.0


0.2 8.6



Strathfield Golf Club - - 2.0 - - 5.0 15.0 1.0 - 6.0 - - - 2.0 - - - - - - - - 1.0 - - 10.0 - - - 2.0
Sydney (Observatory Hill) - 0.2 5.0 0.2 4.4 11.0 18.4 1.0 - 5.0 0.2 0.2 0.8 0.4 - -
- - - 1.0 0.2 - - - 2.0 0.2 0.2 - -
Sydney Airport AMO - 0.2 5.4 - 3.8 7.4 10.2 2.8 - 5.4 0.2 - - 1.0 - 0.2 - - - - - 0.2 - - - 4.4 - 0.2 - -
Sydney Botanic Gardens - - 5.8 0.4 5.2 10.8 17.8 1.0 - 6.2 - 0.6 - 1.2 - 0.2 0.4 - - - 1.0 - - - - 3.8 0.4 - - -
Terrey Hills AWS 0.2 - 2.6 - 4.4 22.4 19.6 2.0 0.2 5.6 0.2 0.4 3.2 0.2 0.2 0.2 0.4 - - - 0.6 - - - 0.2 8.4 - - - -
Turramurra (Kissing Point Road)

2.0
2.2 6.2 14.0 2.0
6.8
0.4 4.0 0.2
0.6 0.6


0.6


0.2 14.6


-
Willmot (Resolution Ave) - - 1.0 - - 1.0 6.0 1.0 - 4.0 - - - - - - - - - - - - - - - 16.0 - - - -
Most values are the precipitation in the 24 hours to 9 am on the day indicated. Days marked with → are part of a longer accumulation, which is shown on the final day.
Values over 100 mm have been rounded to the nearest whole millimetre.
Days marked with - have a rainfall report of zero; days left blank have no rainfall report (which often indicates no rain fell).
Rainfalls coloured
according to the amount
0 1.0 5.0 10.0 15.0 25.0 50.0 100 150 200 300 400 600 millimetres

Notes

A Monthly Climate Summary is prepared to list the main features of the weather in Sydney using the most timely and accurate information available on the date of publication; it will generally not be updated. Later information, including data that has had greater opportunity for quality control, will be presented in the Monthly Weather Review, usually published in the fourth week of the month.

A Climate Summary is generally published on the first working day of each month.

This statement has been prepared based on information available at 10 am on Wednesday 1 October 2014. Some checks have been made on the data, but it is possible that results will change as new information becomes available.

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.

The ACORN-SAT dataset is used for temperature area averages.

Further information

Media
(03) 9669 4057
Enquiries