Greater Sydney in April 2018: much warmer and drier than average

Temperatures were much warmer than average during April across Greater Sydney, with many sites exceeding their April temperature records. Rainfall totals for April were below average in all suburbs, despite several days of rain at the end of the month.

Drier than average

  • Rainfall totals during April were below average across Sydney, despite widespread falls of more than 10 mm in the last few days of the month
  • In the city, Sydney (Observatory Hill) had its driest April since 2006 and less than half its average count of rain days for the month
  • April rainfall ranged from 12% of average at Canterbury Racecourse and Katoomba to 63% of average at Norah Head

Much warmer than average

Sydney (Observatory Hill)

  • Total rainfall for Sydney (Observatory Hill) was 23.2 mm, which is 18% of the long-term average of 127.9 mm
  • The mean daily maximum temperature for Sydney (Observatory Hill) was 26.1 °C, which is 3.6 °C above the long-term average of 22.5 °C. The warmest day was 35.4 °C on the 9th, and the coolest day was on the 28th when the temperature reached 20.3 °C
  • The mean daily minimum temperature for Sydney (Observatory Hill) was 18.0 °C, which is 3.3 °C above the long-term average of 14.7 °C. The coldest morning was 12.0 °C on the 30th, and the warmest morning was on the 14th when the minimum temperature was 23.2 °C

Further information

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Extremes in April 2018
Hottest day 36.8 °C at Sydney Airport AMO on the 9th
Warmest days on average 28.6 °C at Penrith Lakes AWS
Coolest days on average 20.7 °C at Mount Boyce AWS
Coldest day 11.0 °C at Mount Boyce AWS on the 28th
Coldest night 5.0 °C at Mount Boyce AWS on the 30th
Coolest nights on average 11.0 °C at Mount Boyce AWS
Warmest nights on average 18.9 °C at Sydney Harbour (Wedding Cake West)
Warmest night 23.2 °C at Sydney (Observatory Hill) on the 14th
Warmest on average overall 22.2 °C at Sydney (Observatory Hill Comparison)
Coolest on average overall 15.9 °C at Mount Boyce AWS
Wettest overall 91.0 mm at Wyong (Mount Elliot)
Driest overall 5.0 mm at Milperra Bridge (Georges River)
Wettest day 61.0 mm at Wyong (Mount Elliot) on the 3rd
Strongest wind gust 93 km/h at Mount Boyce AWS on the 15th

Record highest April temperature
New record
(°C)
Old
record
Years of
record
Average for
April
Sydney (Observatory Hill) 35.4 on the 9th 34.2 on the 6th in 2016 160 22.5
Sydney Airport AMO 36.8 on the 9th 35.7 on the 4th in 1986 80 22.9
Katoomba (Murri St) 29.6 on the 11th 28.7 on the 4th in 1986 56 16.8
Mount Boyce AWS 27.9 on the 11th 26.5 on the 16th in 2004 27 17.1
Mangrove Mountain AWS 33.1 on the 2nd 32.9 on the 6th in 2016 24 21.8
Canterbury Racecourse AWS 35.4 on the 9th 34.5 on the 6th in 2016 23 23.4
Horsley Park Equestrian Centre AWS 35.9 on the 9th 35.8 on the 6th in 2016 21 23.7



Record highest April mean daily maximum temperature
New record
(°C)
Old
record
Years of
record
Average for
April
Sydney (Observatory Hill) 26.1 25.6 in 1922 159 22.5
Katoomba (Murri St) 21.3 20.3 in 2016 90 16.8
Sydney Airport AMO 26.2 25.2 in 2005 79 22.9
Prospect Reservoir 27.4 26.0 in 2016 53 23.7
Bankstown Airport AWS 27.8 26.1 in 2016 49 23.7
Parramatta North (Masons Drive) 27.1 26.0 in 1986 49 23.8
Camden Airport AWS 27.9 26.4 in 1980 41 23.8
Mount Boyce AWS 20.7 20.0 in 2016 26 17.1
Richmond RAAF 28.1 26.7 in 2016 24 24.0
Mangrove Mountain AWS 25.2 23.9 in 2016 23 21.8
Norah Head AWS 25.5 24.4 in 2016 23 22.9
Badgerys Creek AWS 27.6 26.2 in 2016 22 23.9
Canterbury Racecourse AWS 26.3 25.1 in 2005 22 23.4
Penrith Lakes AWS 28.6 26.7 in 2016 22 24.5
Horsley Park Equestrian Centre AWS 27.6 26.0 in 2016 20 23.7



Record highest April daily minimum temperature
New record
(°C)
Old
record
Years of
record
Average for
April
Sydney Airport AMO 23.1 on the 14th 22.2 on the 1st in 1959 80 14.3
Bankstown Airport AWS 22.8 on the 14th 20.2 on the 20th in 2006 50 12.7
Camden Airport AWS 20.6 on the 14th 19.4 on the 10th in 1978 42 11.0
Mount Boyce AWS 17.7 on the 12th 17.0 on the 6th in 2016 27 8.7
Mangrove Mountain AWS 20.3 on the 14th 19.1 on the 13th in 1998 24 12.0
Norah Head AWS 22.1 on the 13th 21.5 on the 4th in 2016 24 15.9
Richmond RAAF 21.8 on the 14th 19.7 on the 4th in 2004 24 11.6
Badgerys Creek AWS 21.1 on the 14th 20.5 on the 6th in 1999 23 11.4
Canterbury Racecourse AWS 21.0 on the 13th 20.9 on the 20th in 2006 23 12.8
Penrith Lakes AWS 21.9 on the 14th 19.5 on the 9th in 1998 23 13.1
Horsley Park Equestrian Centre AWS 22.2 on the 14th 19.0 on the 20th in 2006 21 12.8



Record highest April mean daily minimum temperature
New record
(°C)
Old
record
Years of
record
Average for
April
Sydney (Observatory Hill) 18.0 16.9 in 2016 159 14.7
Sydney Airport AMO 18.0 16.8 in 2016 79 14.3
Parramatta North (Masons Drive) 15.0 14.9 in 1989 50 12.8
Mangrove Mountain AWS 14.2 13.5 in 2005 23 12.0
Norah Head AWS 18.2 17.7 in 2016 23 15.9
Richmond RAAF 14.5 13.5 in 2002 23 11.6
Badgerys Creek AWS 14.2 13.2 in 2016 22 11.4
Canterbury Racecourse AWS 15.4 14.2 in 2016 22 12.8
Penrith Lakes AWS 15.5 15.0 in 2016 22 13.1
Horsley Park Equestrian Centre AWS 15.2 14.3 in 2016 20 12.8

Highest April mean daily minimum temperature for at least 20 years
Observed
(°C)
Most recent
higher
Average for
April
Bankstown Airport AWS 15.3 =15.3 in 1990 12.7
Prospect Reservoir 15.6 16.0 in 1990 13.0
Camden Airport AWS 13.1 14.7 in 1989* 11.0

* note: there are gaps in the historical record at this site, so it is possible a higher value has gone unreported




Record highest April mean temperature
New record
(°C)
Old
record
Years of
record
Average for
April
Sydney (Observatory Hill) 22.1 20.9 in 2005 159 18.6
Sydney Airport AMO 22.1 20.9 in 2005 79 18.6
Prospect Reservoir 21.5 20.3 in 2016 53 18.3
Bankstown Airport AWS 21.5 20.3 in 2016 49 18.2
Parramatta North (Masons Drive) 21.1 19.9 in 1968 49 18.3
Camden Airport AWS 20.5 19.3 in 2016 41 17.4
Mount Boyce AWS 15.9 15.4 in 2005 26 12.9
Mangrove Mountain AWS 19.7 18.6 in 2005 23 16.9
Norah Head AWS 21.9 21.1 in 2016 23 19.4
Richmond RAAF 21.3 19.9 in 2016 23 17.8
Badgerys Creek AWS 20.9 19.7 in 2016 22 17.7
Canterbury Racecourse AWS 20.8 19.5 in 2016 22 18.1
Penrith Lakes AWS 22.1 20.9 in 2016 22 18.8
Horsley Park Equestrian Centre AWS 21.4 20.2 in 2016 20 18.2



Summary statistics for April 2018
Maximum temperatures
(°C)
Minimum temperatures
(°C)
Rainfall
(millimetres)
Mean for
April
2018
Diff
from
average
Highest for
April
2018
Mean for
April
2018
Diff
from
average
Lowest for
April
2018
Total for
April
2018
Average
for
April
Rank of
April
2018
Fraction of
April
average
Badgerys Creek AWS 27.6 +3.7 35.7 9th 14.2 +2.8 9.8 25th 18.2 49.4 low 37%
Bankstown Airport AWS 27.8 +4.1 35.9 9th 15.3 +2.6 10.5 30th 11.0 84.5 low 13%
Camden Airport AWS 27.9 +4.1 35.8 9th 13.1 +2.1 7.9 29th 10.6 67.1 low 16%
Campbelltown (Mount Annan) 28.1 +4.4 36.1 9th 13.6 +2.3 8.4 30th 9.8 64.1 v low 15%
Canterbury Racecourse AWS 26.3 +2.9 35.4 9th 15.4 +2.6 10.9 30th 12.4 104.9 low 12%
Cooranbong (Lake Macquarie AWS) 26.3   34.2 9th 13.6   9.8 30th 78.6
Gosford AWS 25.7   34.2 9th 15.8   11.5 18th 73.0
Holsworthy (Defence) 26.6   36.0 9th 13.7   8.2 30th 30.8
Holsworthy Aerodrome AWS 27.1   35.8 9th 14.2   9.9 30th 7.8
Horsley Park Equestrian Centre AWS 27.6 +3.9 35.9 9th 15.2 +2.4 11.0 30th 9.6 73.1 v low 13%
Katoomba (Murri St) 21.3 +4.5 29.6 11th     7.8 28th 14.2 121.3 v low 12%
Mangrove Mountain AWS 25.2 +3.4 33.1 2nd 14.2 +2.2 8.2 30th 41.8 83.2 average 50%
Mount Boyce AWS 20.7 +3.6 27.9 11th 11.0 +2.3 5.0 30th 10.8 65.4 low 17%
Norah Head AWS 25.5 +2.6 32.7 9th 18.2 +2.3 13.1 30th 80.8 129.1 average 63%
Parramatta North (Masons Drive) 27.1 +3.3 35.3 9th 15.0 +2.2 9.8 30th 13.9 91.0 low 15%
Penrith Lakes AWS 28.6 +4.1 35.8 9th 15.5 +2.4 10.8 25th 22.6 48.9 average 46%
Prospect Reservoir 27.4 +3.7 34.6 9th 15.6 +2.6 11.5 29th 21.4 76.1 low 28%
Richmond RAAF 28.1 +4.1 35.9 9th 14.5 +2.9 8.4 30th 10.8 57.0 low 19%
Springwood (Valley Heights) 25.5 +3.5 33.5 2nd 14.9 +2.7 9.4 30th 24.2 88.2 low 27%
Sydney (Observatory Hill Comparison) 26.7   35.6 9th 17.8   11.7 30th 24.2
Sydney (Observatory Hill) 26.1 +3.6 35.4 9th 18.0 +3.3 12.0 30th 23.2 127.9 v low 18%
Sydney Airport AMO 26.2 +3.3 36.8 9th 18.0 +3.7 11.9 30th 22.2 107.8 low 21%
Sydney Harbour (Wedding Cake West) 24.0 +1.8 32.1 9th 18.9 +2.3 11.9 30th
Sydney Olympic Park AWS (Archery Centre) 27.1   35.8 9th 16.1   10.5 30th 15.2
Terrey Hills AWS 24.6 +2.5 33.2 9th 16.2 +2.4 10.3 30th 34.4 119.7 v low 29%

Daily maximum temperatures for April 2018
123456789101112131415161718192021222324252627282930
Badgerys Creek AWS33.935.323.626.330.029.230.331.535.726.231.034.534.331.124.329.424.422.426.227.424.925.226.626.525.527.521.419.922.621.3
Bankstown Airport AWS34.234.624.626.030.227.330.929.835.925.131.834.734.531.624.830.123.225.727.026.327.324.326.526.025.328.322.220.722.121.8
Camden Airport AWS33.433.923.026.630.329.630.631.635.826.231.934.934.731.224.929.024.323.627.727.824.325.226.827.327.927.221.920.322.322.6
Campbelltown (Mount Annan)34.334.723.227.030.729.730.831.636.126.531.834.935.230.624.028.624.923.928.228.124.125.926.727.426.827.122.622.122.822.7
Canterbury Racecourse AWS30.233.324.124.828.525.628.628.335.424.729.134.033.030.824.429.522.224.027.124.223.823.325.223.724.124.020.520.121.220.9
Cooranbong (Lake Macquarie AWS)30.632.525.925.127.527.129.729.234.224.728.531.931.931.026.030.523.522.426.325.823.123.624.223.922.424.720.721.820.720.8
Gosford AWS29.432.424.224.726.825.728.327.634.224.227.732.532.530.324.829.522.421.925.523.823.323.023.723.422.823.620.420.620.520.2
Holsworthy (Defence)34.233.522.024.930.827.930.730.336.023.631.635.334.130.724.728.621.822.827.124.921.923.725.925.123.324.019.518.820.919.6
Holsworthy Aerodrome AWS34.234.324.125.830.127.230.929.135.824.631.434.634.831.224.329.522.923.226.626.123.624.425.626.024.825.420.920.121.820.8
Horsley Park Equestrian Centre AWS34.034.725.126.430.128.730.431.135.926.431.234.734.130.824.229.624.722.826.827.124.924.926.326.524.627.321.219.922.921.8
Katoomba (Murri St)28.115.420.225.427.027.228.221.529.626.426.221.015.619.719.816.420.022.218.118.321.321.615.411.117.0
Mangrove Mountain AWS31.233.123.123.326.926.628.629.632.824.029.931.231.328.523.628.822.320.426.323.922.322.523.722.920.823.618.918.518.818.7
Mount Boyce AWS27.124.916.021.524.226.025.826.526.721.627.925.125.920.114.619.119.514.719.421.417.718.520.220.620.620.513.911.015.416.0
Norah Head AWS28.328.524.424.928.826.429.327.032.726.126.732.432.430.225.029.222.223.026.622.624.022.723.522.421.622.421.121.520.119.3
Parramatta North (Masons Drive)33.533.524.026.029.027.630.230.235.325.031.334.233.030.524.729.023.822.226.726.025.724.425.625.225.425.421.520.721.822.0
Penrith Lakes AWS34.434.024.727.930.529.431.332.035.829.032.335.235.031.925.029.126.823.126.628.726.226.127.927.627.428.723.420.824.323.6
Prospect Reservoir33.534.024.025.829.528.130.130.834.626.530.834.034.230.524.229.424.023.826.527.024.725.025.826.025.126.521.020.122.222.9
Richmond RAAF33.733.325.127.329.829.731.032.135.927.231.435.034.331.825.629.725.922.526.127.625.325.826.926.826.028.722.021.323.822.4
Springwood (Valley Heights)31.033.521.424.227.526.228.328.632.925.029.032.732.828.623.026.923.919.323.525.223.022.723.924.524.325.819.018.520.520.2
Sydney (Observatory Hill Comparison)27.831.326.226.628.628.327.827.535.626.228.234.233.130.724.329.822.524.425.425.424.526.626.625.524.823.921.019.922.320.5
Sydney (Observatory Hill)27.130.426.726.526.526.926.626.235.424.026.534.632.630.524.529.922.922.224.225.723.824.723.925.125.224.121.720.322.720.8
Sydney Airport AMO30.632.624.425.428.825.229.226.936.824.528.935.534.931.925.430.821.422.926.923.222.823.124.723.323.222.820.119.320.219.8
Sydney Harbour (Wedding Cake West)23.926.523.424.023.824.524.524.332.123.823.331.731.430.024.028.221.721.522.122.222.022.623.322.322.521.719.519.119.819.1
Sydney Olympic Park AWS (Archery Centre)33.034.424.725.629.826.730.527.835.825.031.434.933.931.525.430.523.223.227.325.224.924.825.824.925.124.721.020.521.521.1
Terrey Hills AWS29.131.923.223.725.924.527.725.933.223.126.730.931.429.023.327.721.220.825.323.622.122.322.822.823.222.218.718.619.518.9
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 April 2018
123456789101112131415161718192021222324252627282930
Badgerys Creek AWS14.716.919.018.114.613.817.713.613.016.714.614.015.021.116.712.412.413.011.412.915.011.811.412.19.811.815.213.911.110.9
Bankstown Airport AWS16.318.019.818.516.215.317.116.516.317.317.515.316.922.817.712.913.815.812.113.913.412.712.312.511.913.715.313.811.410.5
Camden Airport AWS14.116.018.917.714.013.418.113.411.216.813.613.212.720.615.710.811.512.910.211.711.110.210.311.48.011.514.213.27.99.5
Campbelltown (Mount Annan)14.616.718.117.614.013.415.713.412.315.014.413.615.020.416.912.311.812.510.512.512.811.511.611.111.512.013.513.110.48.4
Canterbury Racecourse AWS16.017.620.818.115.415.916.517.116.017.715.615.721.020.817.212.614.516.311.713.013.311.612.412.813.014.716.614.112.310.9
Cooranbong (Lake Macquarie AWS)15.113.719.317.715.813.114.412.512.915.512.712.616.318.914.511.010.411.210.511.715.911.210.611.014.513.214.114.612.09.8
Gosford AWS17.316.819.319.116.815.316.116.016.318.316.615.520.923.118.415.013.811.512.613.317.913.112.812.615.114.416.514.314.212.3
Holsworthy (Defence)15.316.318.116.614.514.915.515.614.115.014.514.816.020.116.012.913.710.510.712.612.610.411.210.910.913.013.712.88.88.2
Holsworthy Aerodrome AWS16.016.618.517.713.915.316.015.713.715.015.614.517.921.815.413.215.214.110.712.912.311.410.710.911.012.914.112.310.49.9
Horsley Park Equestrian Centre AWS15.917.319.618.315.515.317.315.914.215.916.915.620.122.216.914.214.013.211.313.315.313.712.514.112.614.615.213.112.211.0
Katoomba (Murri St)13.613.212.713.016.212.117.412.112.518.016.613.28.99.89.49.911.39.810.09.79.09.87.88.1
Mangrove Mountain AWS15.916.717.316.116.114.916.614.915.415.015.416.920.220.316.514.211.39.610.912.415.911.111.011.013.414.912.711.110.58.2
Mount Boyce AWS13.517.113.012.311.915.011.715.614.610.912.117.714.712.38.18.78.68.58.911.59.88.49.48.69.210.99.36.86.55.0
Norah Head AWS19.319.319.620.819.318.520.418.819.420.319.519.022.121.918.916.318.017.817.016.518.216.516.016.217.517.217.915.315.413.1
Parramatta North (Masons Drive)15.817.520.017.215.515.716.016.515.216.215.215.221.821.817.017.213.013.411.212.212.811.713.212.613.015.115.512.011.69.8
Penrith Lakes AWS16.318.018.819.216.815.120.116.113.717.315.815.916.421.917.914.113.715.112.213.617.714.413.013.910.814.216.513.813.010.9
Prospect Reservoir16.618.020.118.516.016.017.616.915.517.216.516.220.521.017.815.714.813.811.813.214.813.112.912.912.515.715.813.011.511.9
Richmond RAAF15.116.519.818.815.413.417.414.611.916.015.313.418.821.818.013.611.412.810.313.116.513.911.613.48.614.616.713.510.28.4
Springwood (Valley Heights)15.518.216.516.815.515.416.416.117.616.415.316.220.919.315.216.313.412.012.213.115.213.013.213.512.513.714.112.610.89.4
Sydney (Observatory Hill Comparison)19.320.020.720.418.419.320.220.618.218.719.418.723.023.118.417.518.117.115.016.116.414.915.115.714.916.716.814.713.611.7
Sydney (Observatory Hill)19.720.520.920.818.619.620.521.018.519.019.519.222.723.218.817.818.517.415.316.416.615.115.416.015.217.017.114.913.712.0
Sydney Airport AMO19.120.320.220.518.819.119.519.819.519.220.119.623.023.118.218.118.017.815.516.616.815.315.215.914.616.817.114.715.211.9
Sydney Harbour (Wedding Cake West)19.920.721.221.519.820.521.521.021.019.320.220.022.323.019.319.019.318.517.017.318.117.316.717.616.617.118.515.515.211.9
Sydney Olympic Park AWS (Archery Centre)17.818.720.719.117.016.718.018.415.817.516.816.920.621.218.113.914.415.212.814.014.213.213.814.114.217.116.213.912.010.5
Terrey Hills AWS17.718.518.718.316.917.618.819.017.916.518.119.121.821.216.816.215.113.614.813.516.212.814.113.913.515.414.613.211.510.3
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 April 2018
123456789101112131415161718192021222324252627282930
Abbotsbury (Fairfield (City Farm)) - - - - - - - - - - - - - - - - - - - 2.0 - - - - - - - 5.0 1.0 13.0
Abbotsford (Blackwall Point Rd) - - - - - - - - - - - - - - - - - - - - - - - - - - 4.0 8.0 - 8.0
Audley (Royal National Park) - - - - - - - - - - - - - - - - - - - - - - - - - - 1.0 10.0 - 2.0
Avalon Beach (Avalon (Palmgrove Rd)) - - 5.8 2.4 - - - - - - - - - - - - - 0.6 - 0.3 - - - - 0.6 - 3.4 11.0 9.8 24.0
Badgerys Creek AWS - -
- - - - - - - - - - - - - - - - - - - - - 2.6 - - - 0.2 15.4
Bankstown Airport AWS - - - - - - - - 0.2 - - - - - - - - - - - - - - - - - 0.4 5.6 0.4 4.4
Baulkham Hills Eucalyptus Ct - - 0.5 - - - - - - - - - - - - - 4.0 - - - - - - - - - 0.5 4.0 - 7.5
Belrose (Evelyn Place) - - 1.6 - 0.4 - - - - - - - - - - - - 0.4 - 0.2 - - - - - 0.4 0.8 9.0 3.8 13.2
Blackheath (Wombat Street) - - 3.0 - - - - - - - - - - - - - - 1.0 - 1.0 - - - - - - - 1.0 2.0 2.0
Box Hill (McCall Gardens) - - 2.0 - - - - - - - - - - - - - - - - 1.0 - - - - - - - 1.0 - 6.0
Bringelly (Maryland) - - - - - - - - - - - - - - - - - - - 1.0 - - - - - - - - - 18.0
Camden Airport AWS - - - - - - - - - - - - - - - - - - - - - - - - - - - - 0.2 10.4
Campbelltown (Kentlyn (Georges River Roa - - - - - - - - - - - - - - - - - - - - - - - - - - - 5.0 - 5.0
Campbelltown (Mount Annan) - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 9.8
Canterbury Racecourse AWS - - - - - - - - 0.2 - - - - - - - - - - - - - - - - - 1.8 7.4 - 3.0
Castle Cove (Rosebridge Ave) - - - - - - - - - - - - - - - - - - - - - - - - - 0.2 3.0 8.0 4.0 14.0
Castle Hill (Kathleen Ave) - - 1.0 - - - - - - - - - - - - - - - - 8.2 - - - - - - 3.0 5.4 - 8.3
Castlereagh (Castlereagh Road) - 2.8 - - - - - - - - - -

















Cawdor (Woodburn) - - 5.0 - - - - - - - - - - - - - - - - - - - - - - - - - - 8.0
Chatswood Bowling Club - - 1.0 - - - - - - - - - - - - - - - - - - - - - - - 2.0 7.0 1.0 8.0
Collaroy (Long Reef Golf Club) - - 2.2 - - - - - - - - - - - - - - - - - - - - - - - 2.6 1.6 8.2 31.6
Colo Heights (Mountain Pines) - - - - - - - - - - - - - 0.1 - - 0.2 - - 12.4 - - 0.2 - - 0.4 - 2.4 1.4 3.2
Concord (Brays Rd) - - - - - - - - - - - - - - - - - - - - - - - - - - 2.4 8.4 0.2 9.4
Cooranbong (Avondale) - 1.0 6.0 2.0 3.0 - - - 1.0 - - - - - - - - - - 42.0 - 3.0 - - 2.0 5.0 9.0 1.0 1.0 8.0
Cooranbong (Lake Macquarie AWS) - - 6.0 1.0 3.6 - - 0.2 0.2 - - - - - - - - - - 41.8 - 2.8 - - 0.6 5.4 7.8 1.6 0.4 7.2
Darkes Forest (Kintyre) - - - - - - - - - - - - - 2.2 - - - - - - - - - - - - - 2.8 1.0 15.6
Erskine Park Reservoir - - - - - - - - - - - - - - - - - - - - - - - - - - - 2.0 1.0 8.0
Faulconbridge (Great Western Hwy) - - 6.0 - - - - - - - - - - - - - - - - - - - - - - - - - 3.0 13.0
Faulconbridge (St Georges Crescent) - - 6.2 - - - 0.6






















Frenchs Forest (Frenchs Forest Rd) - - 2.0 - - - - - - - - - - - - -













Gears (Wyong River) - - 16.0 - - - - - - - - - - - - - - - - 1.0 - - - - - 1.0 2.0 1.0 - 3.0
Gosford AWS - - 40.6 0.2 1.6 - - - - - - - - - - - - - - 1.0 - - - - 0.4 1.8 4.6 8.8 0.6 13.4
Holsworthy (Defence) - - 3.6 - - - 0.2 - 0.4 - - - - 0.2 0.4 - - - - - - - - 0.2 0.4 - 2.0 11.2 1.2 11.0
Holsworthy Aerodrome AWS - - - - - - - - - - - - - - - - - - - - - - - - - - - 4.8 0.2 2.8
Horsley Park Equestrian Centre AWS - - - - - - - - - 0.2 - - - - 0.2 - - - - 0.4 0.2 - - - - - - 0.4 1.0 7.2
Katoomba (Murri St) - 2.6 1.0 - - - - - - - - - 0.6 - - - - 0.2 0.2 - - - 0.2 0.2 1.4 7.8
Kurrajong Heights (Bells Line of Road) - - 5.6 - - - - - - - - - - - - - - - - 7.8 - 0.4 - - - - 0.6 4.0 10.2
Lucas Heights (ANSTO) - - 0.6 - - - - - - - - - - - - - - - - - - - - - - - - 0.7 1.0
Macquarie Park (Willandra Village) - - 3.2 - - - - - -




















Mangrove Mountain AWS 0.2 - 13.0 0.2 0.2 - 0.2 - - - - - - - - - - - - 7.4 - - - - 0.4 6.4 2.2 2.0 0.8 8.8
Marrickville Golf Club - - - - - - - - - - - - - - - - - - - - - - - - - - 1.0 8.0 - 6.0
Menangle Bridge (Nepean River) - - 5.0 - - - - - - - - - - - - - - - - - - - - - - - - - - 5.0
Milperra Bridge (Georges River) - - - - - - - - - - - - - - - - - - - - - - - - - - - 2.0 - 3.0
Mona Vale Golf Club 0.2 0.2 1.4 0.2 0.2 0.2 - 0.2 0.2 - - 0.2 - - - - - 0.2 - 0.2 - - 0.2 - 0.4 0.4 2.8 8.2 7.8 26.8
Mount Boyce AWS - - 3.0 0.2 0.2 - - - - - - - - 0.2 0.2 - - 0.6 0.2 1.2 - - - 0.4 - - 0.2 0.2 2.6 1.6
Norah Head AWS - 0.2 14.8 11.2 0.2 0.2 0.2 0.2 0.2 - - - 0.2 - - - 2.4 2.6 - 4.4 - - - - 7.8 10.8 0.6 2.2 3.0 19.6
North Rocks (Muirfield Golf Club) - - 0.5 - 0.5 - - - - - - - - - - - - - - - - - - - - - 1.0 4.0 0.5 15.5
North Ryde Golf Club - - 1.0 - - - - - - - - - - - - - - - - - - - - - - - 4.0 7.0 - 6.0
Parramatta North (Masons Drive) - - 0.8 - - - - - - - - - - - - - - - - 0.2 - - - - - - 0.2 4.7 0.2 7.8
Peakhurst Golf Club - - - - - - - - - - - - - - - - - - - - - - - - - - - 10.0 - 1.0
Pennant Hills (Yarrara Road) - - 1.8 - - - - - - - - - - 0.2 - - - - - 0.4 - - - - - 0.2 2.8 6.0 0.6 5.4
Penrith Lakes AWS - - 3.6 - 0.2 0.2 - - - - - - - - - - - - - 1.8 0.2 - - - - 0.2 - - 2.0 14.4
Picton Council Depot - - - - - - - - - - - - - - - - - - - - - - - - - - - 12.0
Prospect Reservoir - - - - - - - - - - - - - 1.0 - - - - - 0.6 - - - - - - 0.2 4.0 0.4 15.2
Putty (The Gibba) - - - - - - - - - - - - - - - - - - - 12.0 - - - - - - - - - 1.0
Randwick (Randwick St) - - 1.2 - 0.1 - - - - 0.8 - - - - - - - 2.0 - - - - - - 0.4 0.2 - 10.2 15.2 24.6
Richmond - UWS Hawkesbury - - - - - - - - - - - - - - - - - - - 1.8 - 0.4 - - - - - 10.2
Richmond RAAF - - - - - - - - - - - - - - - - - - - 2.0 0.2 - - - - - - 0.4 1.2 7.0
Rose Bay (Royal Sydney Golf Club) - - 0.1 - - - - - - 0.2 - - - - - - 0.2 0.1 - - 1.2 - - - 1.0 1.3 2.0 8.8 6.8 30.4
Rossmore (South Creek) - - - - - - - - - - - - - - - - - - - 1.0 - - - - - - - - 1.0 15.0
Sans Souci (Public School) - - 2.0 - - - - - - - - - - - - - - - - - - - - - - - 2.0 10.0 - -
Seven Hills (Radio FM 103.2) - - - - - - - - - - - - - - - - - - - - - - - - - - - 2.5 - 9.5
Seven Hills (Collins St)


























3.0
13.2
Shanes Park (South Creek Road) - - 2.0 - - - - - - - - - - - - - - - - 1.4 0.2 - - - - - - 1.6 1.4 6.4
Springwood (Valley Heights) - - 3.8 - - - 0.2 - - - - - - - - - - - - 0.8 - - - - - 1.4 0.2 - 1.4 16.4
St Ives (Richmond Avenue) - - 2.2 - - - - - - - - - - - - - - 0.4 - - - - - - - 0.4 1.4 4.2 1.4 10.0
Sydney (Observatory Hill Comparison) - - - - - - - - - - - - - - - - - - - - - - - - - 0.2 1.6 9.6 2.6 10.2
Sydney (Observatory Hill) - - - - - - - - - - - - - - - - - - - - - - - - - 0.2 1.4 9.2 2.6 9.8
Sydney Airport AMO - - 3.4 0.2 - - - - - - - - - - - - - - - - - - - - - - 0.6 6.2 0.8 11.0
Sydney Botanic Gardens - - - - - - - - - - 0.4 - - - - - - 0.1 - - - - - - 0.4 0.8 0.2 8.2 3.6 12.6
Sydney Olympic Park AWS (Archery Centre) - - - - - - - - - - - - - 0.2 - - - - - - - - - - 0.2 - 1.6 6.0 0.2 7.0
Terrey Hills AWS 0.2 - 4.4 0.2 - 0.2 - - - - - - - - - - - 0.4 - - - 0.2 - - 0.4 0.2 8.8 5.2 1.2 13.0
Wahroonga (Ada Avenue) 0.2 - 3.0 - 0.2 - 0.2 - - - - - - - - - - - - 0.6 - 0.2 0.2 - - 0.4 6.4 6.0 0.4 15.6
Warragamba - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 14.0
Wedderburn (Booalbyn) - - - - - - - - - - - - - - - - - - - - - - - - - - - 1.0 1.0 6.0
Wyong (Jilliby (Jilliby Creek)) - - 23.6 0.2 4.8 - - - - - - - - - - - - - - 4.2 - - - - 0.8 16.2 11.8 5.4 - 2.2
Wyong (Kulnura (Jeavons)) - - 1.0 - - - - - - - - - - - - - - - - 35.0 - - - 2.0 1.0 3.0 2.0 1.0 - 3.0
Wyong (Mount Elliot) - - 61.0 1.0 - - - - - - - - - - - - - - - 1.0 - - - - 1.0 3.0 7.0 6.0 1.0 10.0
Wyong (Olney Forest) - - 6.0 1.0 1.0 - - - - - - - - - - - - - - 22.0 - - - - 1.0 10.0 5.0 4.0 - 2.0
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

The Monthly climate summary, generally published on the first working day of each 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. More extensive discussion of significant weather events, along with later information and data that has had greater opportunity for quality control, will be presented in the Monthly Weather Review.

In September 2017 this summary was broadened to include 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 “include the population within the urban area of the city, as well as people who regularly socialise, shop or work within the city, and live in small towns and rural areas surrounding the city. It is important to note that GCCSAs do not define the built up edge of the city. They provide a stable definition for these cities and are designed for the output of a range of social and economic survey data.

This statement has been prepared based on information available at 10 am on Tuesday 1 May 2018. 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.

Further information

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