Greater Sydney in April 2019: very dry and very warm

Rainfall totals for April were below average in all suburbs. Temperatures were much warmer than average during April across Greater Sydney, with nearly all locations experiencing one of their warmest ten Aprils on record.

Very dry month

  • Nearly all locations across Greater Sydney experienced a dry to very dry April, despite some localised moderate to heavy falls in the first week of the month
  • A wet start to April for Greater Sydney as a couple of cold fronts tracked across the State
  • The wettest day was 52.2 mm on the 2nd at Norah Head AWS; this site was the only location across Greater Sydney to receive its average April rainfall total
  • Most sites experienced below 20% of their average rainfall for April
  • Some sites had their lowest total April rainfall for many decades
  • For the January to April period, Sydney (Observatory Hill) has experienced average rainfall

Very warm days

  • All locations across Greater Sydney (except for Parramatta North) were in the warmest ten Aprils on record in terms of mean temperature
  • Daytime temperatures across Greater Sydney were around 1 to 2 degrees warmer than average for April
  • A surface trough directed warm air across Greater Sydney on the 8th and this was the warmest day of the month for all locations; maximum temperatures ranged from 7 degrees warmer than average (Mount Boyce) to over 11 degrees warmer than average at Sydney Airport
  • Overnight temperatures were warmer than normal across Greater Sydney this month, with the coldest night for most locations occurring on the 28th as a high pressure system brought cloudless skies for the last few days of the month
  • For the January to April period, Sydney (Observatory Hill) has experienced its warmest start to the year for maximum and mean temperatures, and fifth-warmest for minimum temperatures

Sydney (Observatory Hill)

  • Total rainfall for Sydney (Observatory Hill) was 11.2 mm, which is 9% of the long-term average of 127.1 mm
  • The mean daily maximum temperature for Sydney (Observatory Hill) was 24.8 °C, which is 2.3 °C above the long-term average of 22.5 °C. The warmest day was 32.5 °C on the 8th, and the coolest day was on the 11th when the temperature reached 20.6 °C
  • The mean daily minimum temperature for Sydney (Observatory Hill) was 16.0 °C, which is 1.3 °C above the long-term average of 14.7 °C. The coldest morning was 10.9 °C on the 28th, and the warmest morning was on the 9th when the minimum temperature was 19.6 °C

Fog over Sydney

  • On the morning of the 3rd, a thick blanket of fog covered Greater Sydney. Though the fog had cleared by mid-morning it caused delays at Sydney Airport

Further information

Media
(03) 9669 4057
Enquiries

Extremes in April 2019
Hottest day 34.7 °C at Sydney Airport AMO on the 8th
Warmest days on average 26.2 °C at Penrith Lakes AWS
Coolest days on average 19.1 °C at Mount Boyce AWS
Coldest day 14.9 °C at Mount Boyce AWS on the 10th
Coldest night 2.6 °C at Camden Airport AWS on the 28th
Coolest nights on average 9.6 °C at Mount Boyce AWS
Warmest nights on average 17.0 °C at Norah Head AWS & at Sydney Harbour (Wedding Cake West)
Warmest night 21.3 °C at Sydney Harbour (Wedding Cake West) on the 9th
Warmest on average overall 20.9 °C at Norah Head AWS
Coolest on average overall 14.3 °C at Mount Boyce AWS
Wettest overall 124.6 mm at Norah Head AWS
Driest overall 3.4 mm at Campbelltown (Mount Annan)
Wettest day 52.2 mm at Norah Head AWS on the 2nd
Strongest wind gust 80 km/h at Wattamolla AWS on the 9th

Lowest April total rainfall for at least 20 years
Observed
(mm)
Most recent
lower
Average for
April
Rose Bay (Royal Sydney Golf Club) 13.8 4.6 in 1982* 138.3
Colo Heights (Mountain Pines) 6.9 4.0 in 1991* 82.0

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




Summary statistics for April 2019
Maximum temperatures
(°C)
Minimum temperatures
(°C)
Rainfall
(millimetres)
Mean for
April
2019
Diff
from
average
Highest for
April
2019
Mean for
April
2019
Diff
from
average
Lowest for
April
2019
Total for
April
2019
Average
for
April
Rank of
April
2019
Fraction of
April
average
Badgerys Creek AWS 25.2 +1.1 32.9 8th 11.8 +0.3 3.4 28th 6.4 47.5 v low 13%
Bankstown Airport AWS 25.7 +1.9 33.3 8th 13.2 +0.4 5.6 28th 9.4 83.0 low 11%
Camden Airport AWS 25.3 +1.4 32.5 8th 11.0 -0.1 2.6 28th 9.2 65.8 v low 14%
Campbelltown (Mount Annan) 25.3 +1.2 32.4 8th 11.4 -0.1 3.3 28th 3.4 59.4 v low 6%
Canterbury Racecourse AWS 24.6 +1.1 33.4 8th 13.0 +0.1 7.3 28th 19.4 101.1 low 19%
Cooranbong (Lake Macquarie AWS) 25.4 +1.2 33.2 8th 11.7 -0.5 5.3 28th 36.2 97.1 low 37%
Gosford AWS 24.7   33.3 8th 13.9   7.9 28th 40.2
Holsworthy (Defence) 24.6   32.6 8th 12.4   6.3 28th 22.2
Holsworthy Aerodrome AWS 24.9   32.5 8th 12.4   5.4 28th 4.2
Horsley Park Equestrian Centre AWS 24.9 +1.1 32.6 8th 13.1 +0.2 4.9 28th 10.6 70.3 low 15%
Mangrove Mountain AWS     31.2 8th 12.3 +0.2 7.4 1st 17.0 80.4 v low 21%
Mount Boyce AWS 19.1 +1.9 24.5 8th 9.6 +0.9 3.1 27th 26.8 63.9 low 42%
Norah Head AWS 24.8 +1.8 32.7 8th 17.0 +1.0 12.8 28th 124.6 128.9 average 97%
Parramatta North (Masons Drive) 25.1 +1.3 33.3 8th 12.8 -0.1 6.7 28th 13.6 89.6 low 15%
Penrith Lakes AWS 26.2 +1.6 33.8 8th 13.3 +0.1 6.2 28th 7.4 47.2 v low 16%
Richmond RAAF 25.6 +1.4 33.8 8th 12.2 +0.5 5.2 28th 13.6 55.3 low 25%
Springwood (Valley Heights) 23.6 +1.3 31.8 8th 13.3 +0.9 7.7 28th 18.2 87.7 low 21%
Sydney (Observatory Hill) 24.8 +2.3 32.5 8th 16.0 +1.3 10.9 28th 11.2 127.1 v low 9%
Sydney Airport AMO 24.8 +1.8 34.7 8th 15.8 +1.5 9.9 28th 14.8 106.8 v low 14%
Sydney Harbour (Wedding Cake West) 23.1 +0.7 32.4 8th 17.0 +0.2 12.2 28th
Sydney Olympic Park AWS (Archery Centre) 25.2   33.1 8th 14.1   8.5 28th 15.6
Terrey Hills AWS 23.5 +1.2 31.6 8th 14.6 +0.6 8.0 28th 3.6 111.4 v low 3%

Daily maximum temperatures for April 2019
123456789101112131415161718192021222324252627282930
Badgerys Creek AWS21.422.026.523.122.228.430.732.927.421.120.522.426.924.124.124.925.827.325.326.826.226.625.325.928.428.320.324.622.624.1
Bankstown Airport AWS22.523.827.724.923.729.330.333.327.420.620.622.526.723.525.224.627.427.625.225.727.027.325.226.328.328.920.424.524.925.3
Camden Airport AWS21.522.226.622.822.628.029.332.527.021.520.423.226.424.024.025.627.625.426.426.627.126.326.029.427.620.426.023.024.0
Campbelltown (Mount Annan)22.422.226.522.522.727.729.632.427.521.219.922.726.823.824.325.727.626.026.326.227.025.326.429.327.720.426.323.223.9
Canterbury Racecourse AWS21.022.426.423.221.829.327.333.427.219.120.021.726.622.422.823.625.227.123.825.926.226.524.126.126.728.918.922.722.124.9
Cooranbong (Lake Macquarie AWS)23.325.522.922.929.432.333.231.921.322.121.926.423.323.422.824.625.924.625.826.926.725.226.128.029.820.423.522.724.5
Gosford AWS21.922.825.323.823.029.327.933.330.319.721.121.525.622.522.723.724.326.224.324.926.325.624.725.627.428.819.322.121.724.4
Holsworthy (Defence)20.622.126.820.821.628.330.332.626.618.619.023.126.622.021.723.624.327.325.426.326.127.224.825.928.527.620.323.921.024.5
Holsworthy Aerodrome AWS21.222.426.222.622.328.629.732.526.919.819.721.826.122.823.324.224.527.025.025.726.426.825.225.828.328.020.024.1
Horsley Park Equestrian Centre AWS21.522.326.222.521.627.930.732.627.420.519.822.226.722.824.224.725.127.125.125.826.626.224.625.528.228.120.524.422.224.2
Mangrove Mountain AWS20.823.922.720.528.230.731.222.021.922.323.125.023.924.918.522.923.9
Mount Boyce AWS17.515.421.315.816.121.822.824.518.514.916.517.519.517.818.118.718.722.720.120.620.922.319.620.621.918.015.418.417.118.8
Norah Head AWS22.524.225.722.322.428.127.232.730.820.421.221.125.923.022.322.324.025.322.724.928.127.125.828.527.428.919.621.322.825.3
Parramatta North (Masons Drive)21.522.026.323.023.029.231.533.327.220.520.822.226.723.023.624.225.227.525.425.026.627.024.325.827.828.120.324.022.224.5
Penrith Lakes AWS23.423.327.024.222.829.632.133.829.022.121.923.926.825.325.426.026.228.126.227.127.327.127.026.628.929.121.324.323.425.4
Richmond RAAF22.923.026.724.322.229.631.933.828.921.421.822.726.623.624.525.325.527.425.626.526.126.426.426.028.628.720.323.723.124.2
Springwood (Valley Heights)20.521.624.521.920.029.030.731.827.119.219.120.424.322.423.023.523.225.223.224.024.024.424.923.826.226.818.421.920.722.1
Sydney (Observatory Hill)20.823.425.123.723.727.725.032.528.221.320.622.226.423.924.025.724.826.026.024.825.225.225.525.026.729.520.923.622.524.3
Sydney Airport AMO21.023.127.622.521.530.127.434.727.818.820.022.027.622.122.123.825.327.523.625.327.227.323.227.125.430.018.922.322.125.2
Sydney Harbour (Wedding Cake West)21.023.023.022.521.923.625.032.426.318.620.321.424.221.221.623.024.124.422.824.823.423.023.423.324.527.818.920.821.622.2
Sydney Olympic Park AWS (Archery Centre)21.122.126.723.422.430.028.233.128.719.721.122.327.022.923.724.525.027.025.625.727.427.424.626.828.329.220.323.122.725.7
Terrey Hills AWS21.824.622.221.826.626.131.628.019.019.319.925.221.622.422.523.425.622.423.524.724.723.924.426.527.317.720.920.723.2
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 2019
123456789101112131415161718192021222324252627282930
Badgerys Creek AWS7.613.212.215.015.713.815.012.412.28.78.611.810.313.110.812.511.69.313.912.715.714.914.413.411.112.410.63.47.89.6
Bankstown Airport AWS11.113.014.014.515.815.416.314.614.811.110.011.711.015.212.213.313.112.215.313.815.015.915.214.113.314.713.45.69.311.2
Camden Airport AWS7.810.711.714.116.013.913.412.211.38.66.611.310.112.49.09.410.29.313.711.416.114.314.112.610.711.59.92.66.28.9
Campbelltown (Mount Annan)9.711.411.014.115.414.013.712.411.87.06.810.310.012.711.511.512.39.914.111.814.514.614.512.611.611.711.23.38.59.1
Canterbury Racecourse AWS10.113.413.513.916.115.216.213.615.111.29.411.110.914.611.711.712.612.414.813.814.415.115.113.812.715.314.57.38.810.9
Cooranbong (Lake Macquarie AWS)7.414.012.311.914.513.715.213.014.113.98.412.39.313.210.711.312.811.013.312.512.813.411.612.810.914.09.85.38.08.9
Gosford AWS11.415.614.713.915.815.517.013.816.314.712.112.711.115.312.914.213.813.016.814.515.015.514.614.612.915.515.27.910.411.7
Holsworthy (Defence)8.611.112.114.415.013.815.113.714.19.48.512.210.913.410.612.012.012.115.013.314.915.215.513.412.613.812.16.38.711.0
Holsworthy Aerodrome AWS10.212.612.514.215.414.615.413.713.98.88.110.59.914.011.012.311.911.314.812.815.315.716.913.411.813.613.25.49.110.4
Horsley Park Equestrian Centre AWS8.314.113.314.716.515.116.014.414.210.910.812.711.314.913.014.013.211.914.412.915.616.316.314.312.114.912.84.99.211.0
Mangrove Mountain AWS7.413.513.712.615.615.214.615.916.98.88.410.411.113.510.011.012.411.614.714.114.014.412.912.813.115.011.27.67.510.2
Mount Boyce AWS4.59.79.811.610.410.412.516.114.75.06.98.99.78.38.48.08.99.911.210.711.412.311.211.711.911.43.13.55.89.5
Norah Head AWS13.516.316.117.318.116.919.319.319.816.113.815.815.217.316.416.116.916.919.618.519.118.919.018.716.318.815.812.814.216.4
Parramatta North (Masons Drive)8.812.313.813.815.514.614.815.816.39.58.510.811.812.011.412.012.612.514.914.014.315.415.014.013.314.612.86.79.212.5
Penrith Lakes AWS9.414.114.515.516.814.915.413.614.112.29.013.712.114.912.512.713.111.716.113.516.416.315.916.213.014.49.86.28.111.6
Richmond RAAF8.612.814.313.816.214.015.113.213.411.28.611.910.114.311.410.412.111.416.012.615.314.813.915.911.513.57.85.26.710.7
Springwood (Valley Heights)9.913.912.514.515.213.214.517.917.510.110.013.011.713.612.712.713.613.315.013.714.816.415.715.713.815.58.97.710.212.8
Sydney (Observatory Hill)13.115.215.816.517.816.919.218.819.613.612.214.114.616.614.214.715.515.717.516.818.119.019.117.316.317.714.110.912.714.9
Sydney Airport AMO12.916.515.517.217.616.918.317.719.514.511.714.114.516.614.414.315.415.817.616.617.718.219.017.116.417.614.29.912.115.2
Sydney Harbour (Wedding Cake West)14.115.916.316.118.516.819.219.721.315.913.315.615.917.816.016.317.116.918.618.019.219.919.818.817.718.713.712.214.215.2
Sydney Olympic Park AWS (Archery Centre)10.513.515.315.116.615.817.014.915.911.510.312.612.815.513.013.513.913.715.914.815.516.215.915.714.716.214.98.510.513.1
Terrey Hills AWS13.914.115.316.115.117.219.619.611.910.012.112.914.512.813.114.514.215.815.718.117.717.915.814.716.113.18.010.913.9
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 2019
123456789101112131415161718192021222324252627282930
Abbotsbury (Fairfield (City Farm)) - - 3.0 - 3.0 2.0 - - - - - - - - - - - - - - - - - - 2.0 - - 2.0 - -
Abbotsford (Blackwall Point Rd) - - 1.4 - 11.0 6.0























Audley (Royal National Park) - - - 1.0 19.0 1.0 - 1.0 - - - - - - - - - - - - - - 5.0 - - - - - - -
Avalon Beach (Avalon (Palmgrove Rd)) - 9.2 14.8 - 7.2 6.2























Badgerys Creek AWS - - 1.6 0.2 0.6 1.2 - 0.2 - - - - - - - - - 0.2 - - - - - 2.4 - - - - - -
Bankstown Airport AWS - - 0.2 0.2 5.2 2.8 0.2 0.2 - - - - - - - - - 0.2 - - - - - 0.2 - - - - - 0.2
Baulkham Hills Eucalyptus Ct - - 2.5 - 4.0 1.5 - - - - - - - - - - - - - - - - - - - - - - - 1.0
Belrose (Evelyn Place) - 0.2 5.6 - 29.6 0.4 - - - - 0.2 - - - - - - - - - - - - 0.2 - - - - - -
Bilpin Post Office 0.2 2.6 1.0


























Blackheath (Wombat Street) - 6.0 3.0 - 4.0 2.0 - - - - - - - - - - - - - 1.0 - - - 4.0 1.0 - - - - -
Box Hill (McCall Gardens) - - 1.0 - 4.0 9.0 - - - - - - - - - - - - - - - - 1.0 - - - - - - -
Bringelly (Maryland) - - 1.0 - 7.0 2.0 - 1.0 - - - - - - - - - - - - - - - - - - - - - -
Camden Airport AWS - - 1.6 - 0.4 7.2 - - - - - - - - - -
- - - - - - - - - - - - -
Campbelltown (Kentlyn (Georges River Roa - - - - 6.0 1.0 - - - - - - - - - - - - - - 1.0 - - - - - - - - -
Campbelltown (Mount Annan) - - 0.6 - 1.8 0.4 - 0.2 - - - - - - - - - 0.4 - - - - - - - - - - - -
Canterbury Racecourse AWS - - 1.4 - 16.8 1.0 - - - - - - - - - - - - - - - - - - - - - - - 0.2
Castle Cove (Rosebridge Ave) - - 6.0 - 24.0 1.0























Castle Hill (Kathleen Ave) - - 4.0 - 23.0 8.4 - - - - - - - - - - - - - - - - - 7.8





Chatswood Bowling Club - - 6.0 - 20.0 1.0 - - - - - - - - - - - - - - - - - - - - - - - -
Collaroy (Long Reef Golf Club) - 7.2 1.0 - 9.8 - - - - 0.4



















Colo Heights (Mountain Pines) - 1.4 0.8 - 4.0 - - - - - - - - 0.1 0.1 0.1 0.1 0.1 - - 0.1 0.1 - - - - - - - -
Concord (Brays Rd) - - 2.4 - 12.2 2.2























Concord Golf Club - - 3.8 - 13.6 3.0























Cooranbong (Avondale) - 11.0 2.0 1.0 12.0 6.0 - - - - - - - - 2.0 - 4.0 1.0 - - - - - - 1.0 - - - - -
Cooranbong (Lake Macquarie AWS) - 10.6 2.4 - 11.4 5.4 - - - - - - - 0.2 1.6 0.2 3.6 0.2 - - 0.2 - - 0.2 - 0.2 - - - -
Darkes Forest (Kintyre) - 1.4 0.2 - 28.2 5.2 0.2 - - - - - - - - 0.2 0.2 0.2 0.2 - 0.2 0.2 8.6 0.8 - 0.2 - - - -
Dover Heights (Portland St) 0.2 6.8 0.6 - 7.8 9.6 - - - - 0.6 0.4

















Erskine Park Reservoir - - 1.0 - 5.0 9.0 - - - - - - - - - - - - - - - - - - - - - - - -
Faulconbridge (Great Western Hwy)











- - - - - - - - - - - - 1.0 - - - - -
Faulconbridge (St Georges Crescent) - 0.8 - 0.2 8.2 - - - - - - - - - - - - - - - - - - 2.0





Gears (Wyong River) - 14.0 2.0 - 6.0 14.0 1.0 - - - - - - - - - - - - - - - - 9.0 - - - - - -
Gosford AWS - 13.2 10.8 - 10.6 0.4 0.2 - - - - 3.2 - - - - 0.4 - 0.4 - - - - 1.0 - - - - - -
Holsworthy (Defence) - - 0.6 - 18.4 1.2 0.2 - - - - -
- - - 0.2 0.4 - - 0.2 - 0.4 0.2 - 0.4 - - - -
Holsworthy Aerodrome AWS - - 0.6 - 1.4 1.6 - 0.2 - - - - - - - - 0.2 - - - - - - 0.2 - - - - - -
Horsley Park Equestrian Centre AWS - - 3.2 - 2.0 4.6 - - - - - - - - - - - 0.2 - - 0.2 - - 0.2 0.2 - - - - -
Kurrajong Heights (Bells Line of Road) 40.6 9.6





Lucas Heights (ANSTO) - - 1.6 - 12.2 0.9 - 0.2 - - - - - - - - - - - - - - 0.2 - - - - -

Mangrove Mountain AWS -
1.0 - 10.2 2.4 - - - -
0.4 0.2 -
- 0.2 - - 0.4 0.2 - 0.2 1.8 -

- - -
Marrickville Golf Club - - 2.0 - 9.0 2.0 - - - - - - - - - - - 1.0 - - - - 1.0 1.0 - - - - - -
Milperra Bridge (Georges River) - - - - 5.0 1.0 - - - - - - - - - - - - - - - - - - - - - - - -
Mona Vale Golf Club - 7.4 12.4 0.2 9.6 1.8 0.2 0.2 - - 3.0 0.2 0.2 - - 0.2 0.2 0.4 0.2 0.4 0.2 0.2 0.2 1.8 0.2 0.2 - 0.2 - 0.2
Mount Annan (Australian Botanic Garden) - - 0.8 - 1.4 0.4 - - - - - - - - - - - - - 1.5 - - - - - - - - - -
Mount Boyce AWS
5.0 2.2 0.2 3.8 2.4 - - - - - - - 0.2 - 0.2 - 0.2 - 0.2 - 0.2 - 12.0 0.2 - - - - -
Mount Wilson (Clarine) - 5.6 2.4 - 10.4 3.8 - - - - - - - - - - - - - 0.2 - - - 10.0 - - - - - -
Norah Head AWS - 52.2 2.8 - 4.4 15.2 0.2 - - 0.4 - 9.0 12.0 - - - 27.0 - 0.4 0.2 0.2 0.2 - - - - 0.2 - - 0.2
North Parramatta (Burnside Homes) - - 2.5 - 7.0 3.0 0.5 - - - - - - - - - - - - - - - - - - - - - - -
North Rocks (Muirfield Golf Club) - 0.5 1.5 - 12.0 1.5 - - - - - - - - - - - - - - - - - - - - - - - -
North Ryde Golf Club - - 2.0 - 15.0 1.0 - - - - - - - - - - - - - - 1.0 - - - - - - - - -
Parramatta North (Masons Drive) - - 3.2 - 7.0 3.4 - - - - - - - - - - - - - - - - - - - - - - - -
Peakhurst Golf Club - - - 1.0 10.0 1.0 - - - - - - - - - - - - - - 1.0 - - 1.0 - - - - - -
Pennant Hills (Yarrara Road) - - 4.4 - 48.2 12.2 - - 0.2 - 0.2 - - - - - -
Penrith Lakes AWS - - 2.0 - 1.0 4.2 0.2 - - - - - - - - - - - - - - - - - - - - - - -
Picton Council Depot - 1.4 13.2 0.4 2.2 - - 1.8 - - 1.0 - - - 1.2 - - - - - - - - - - - - - - -
Prospect Reservoir - - 4.0 - 4.0 12.0 - - - - - - - - - - - - - - - - 1.0 - - - - - - -
Putty (The Gibba) - 2.0 - - 7.0 2.0 - - - - - - - - - - - - - - - - - - - - - - - -
Randwick (Randwick St) - 2.8 1.4 - 3.0 5.0 - - - 0.6 - 0.2 - - - - - - - 0.2 - - 2.0 1.0





Richmond - UWS Hawkesbury - - 2.4 - 5.6 - 7.0 - - - - - - - - - - - - - - - - - - - - - -
Richmond RAAF - - 2.6 0.2 2.4 7.6 0.2 - - - - - - - - - - 0.2 - - - 0.2 - - 0.2 - - - - -
Rose Bay (Royal Sydney Golf Club) - 6.0 0.3 - 0.1 5.0 - 0.1 - 0.4 0.4 0.2 - - - - - - - - - - 0.5 - 0.8 - - - -
Rossmore (South Creek) - - 2.0 - 1.0 4.0 - - - - - - - - - - - - - - - - - 1.0 - - - - - -
Sans Souci (Public School) - 1.0 - - 11.0 3.0 - - - - - - - - - - - - - - - - 2.0 - - - - - - -
Seven Hills (Radio FM 103.2) - 0.5 2.5 - 3.5 3.5 - - - - - - - - - - - - - - - - - 0.5 - - - - - -
Shanes Park (South Creek Road) - - 2.4 0.2 2.2 14.2 - - - - - - - - - - - - - - - - - - - - - - - -
Springwood (Valley Heights) - 0.8 2.8 - 10.4 1.8 - - - - - - - - - - - - - - - - - 2.4 - - - - - -
St Ives (Richmond Avenue) - 2.4 4.8 - 15.8 10.8























Sydney (Observatory Hill) - - 2.8 - 3.0 4.8 0.2 - - - - - - - - - - - - - - - 0.2 - - - 0.2 - - -
Sydney Airport AMO - 1.4 1.6 - 6.6 3.6 - - - 0.2 - - - - - - 0.2 0.4 - - - - 0.2 0.6 - - - - - -
Sydney Botanic Gardens - 0.2 2.4 - 2.4 1.8 - - - 0.1 - - - - - - - 0.4 - - - - 0.8 0.1 - - - - - -
Sydney Olympic Park AWS (Archery Centre) - - 2.4 - 11.6 1.6 - - - - - - - - - - - - - - - - - - - - - - - -
Terrey Hills AWS - - 0.8 0.2 - - 0.2 - - 0.4 0.8 0.4 - - - 0.2 - 0.2 - 0.2 0.2 - - - - - - - - -
Wahroonga (Ada Avenue) - 0.4 4.2 - 22.2 9.6 0.2 0.2 - - - - - - 0.2 - 0.2 0.2 - 0.2 0.2 0.2 0.2 0.6 - - - - - 0.2
Warragamba - - 3.0 - 7.0 1.0 - - - - - - - - - - - - - - - - - - - - - - - -
Wedderburn (Booalbyn) - - 1.0 - 7.0 2.0 - - - - - - - - - - 1.0 - - - 1.0 1.0 - - - - - - - -
Wyong (Kulnura (Jeavons)) - 12.0 4.0 - 1.0 9.0 - - - - - - - - - - - - - - - - - - - - - - - -
Wyong (Mount Elliot) - 38.0 10.0 - 3.0 1.0 - - - - 2.0 2.0 - - - - - - - - 1.0 - - 3.0 - - - - - -
Wyong (Olney Forest) - 16.0 1.0 - 4.0 4.0 - - - - - 1.0 - - - - 3.0 - - - - - - - - - - - - -
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.

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 “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 Wednesday 1 May 2019. 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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