Greater Sydney in January 2021: cool and dry

Temperatures were around 1 °C below the January average of recent decades. Rainfall was close to or below average across the Sydney Basin.

Drier than usual

  • January rainfall was close to or below average across the Sydney Basin.
  • Some sites in western Sydney received about 40% of their January average rainfall.
  • Some sites in the Blue Mountains, the Northern Beaches and Central Coast received over 90% of their January average rainfall.
  • A low pressure trough, with severe thunderstorms, on the 4th and 5th brought around 20-40 mm of rain across Greater Sydney.
  • There was generally little rain in the middle of the month, although thunderstorms were observed from the 22nd to the 24th.
  • A low pressure trough from the 27th to the 29th brought around 20-100 mm of rain, with the highest totals being recorded in the Central Coast region.

Cool for most of the month

  • January was generally cooler across the Sydney Basin than in recent years.
  • Daytime temperatures were around 1 °C below the January average of recent decades.
  • Nights were also cool, with most sites 0-1 °C below the January average of recent decades.
  • Some sites had their lowest January mean daily minimum temperature since 2000.
  • A stationary high pressure system in the Tasman Sea combined with an inland trough brought very hot air over the Sydney Basin from the 22nd to the 26th.
  • Daytime temperatures during this period were in the high 30s to low 40s, around 6 to 10 °C above the January average.
  • The highest temperature for the month was 41.6 °C at Sydney Airport AMO on the 26th.

Sydney (Observatory Hill)

  • Total rainfall for Sydney (Observatory Hill) was 97.8 mm, which is 3% below the average at the former Observatory Hill site
  • The mean daily maximum temperature for Sydney (Observatory Hill) was 27.4 °C, which is 1.4 °C above the average at the former Observatory Hill site and the lowest for January since 2016
  • The warmest day was 37.1 °C on the 26th, and the coolest day was on the 1st when the temperature reached 22.0 °C
  • Sydney (Observatory Hill) recorded 5 consecutive days over 30 °C from the 22nd to the 26th; only the ninth such instance since records at Observatory Hill began in 1859, but the third year in a row that this has occurred
  • The mean daily minimum temperature for Sydney (Observatory Hill) was 19.1 °C, which is 0.3 °C above the average at the former Observatory Hill site and the lowest for January since 2000
  • The coldest morning was 15.2 °C on the 21st, and the warmest morning was on the 24th when the minimum temperature was 22.2 °C

Further information

Media
(03) 9669 4057

Extremes in January 2021
Hottest day 41.6 °C at Sydney Airport AMO on the 26th
Warmest days on average 29.9 °C at Penrith Lakes AWS
Coolest days on average 23.2 °C at Mount Boyce AWS
Coldest day 12.8 °C at Mount Boyce AWS on the 1st
Coldest night 6.3 °C at Katoomba (Farnells Rd) on the 16th
Coolest nights on average 11.7 °C at Katoomba (Farnells Rd)
Warmest nights on average 19.7 °C at Sydney Harbour (Wedding Cake West)
Warmest night 23.2 °C at Cooranbong (Lake Macquarie AWS) on the 27th
Warmest on average overall 23.7 °C at Penrith Lakes AWS
Coolest on average overall 17.6 °C at Katoomba (Farnells Rd)
Wettest overall 189.0 mm at Wyong (Olney Forest)
Wettest day 62.0 mm at Wyong (Olney Forest) on the 29th
Strongest wind gust 85 km/h at Sydney Airport AMO on the 4th

Lowest January mean daily minimum temperature for at least 20 years
Observed
(°C)
Most recent
lower
Average for
January
Horsley Park Equestrian Centre AWS 16.9 15.5 in 2000 18.0
Penrith Lakes AWS 17.5 16.4 in 2000 18.7
Sydney Airport AMO 19.3 17.8 in 2000 19.0
Katoomba (Farnells Rd) 11.7 10.5 in 2000* 12.9

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




Summary statistics for January 2021
Maximum temperatures
(°C)
Minimum temperatures
(°C)
Rainfall
(millimetres)
Mean for
January
2021
Diff
from
average
Highest for
January
2021
Mean for
January
2021
Diff
from
average
Lowest for
January
2021
Total for
January
2021
Average
for
January
Rank of
January
2021
Fraction of
January
average
Badgerys Creek AWS 29.4 -0.9 40.6 26th 16.4 -0.9 10.5 17th 67.0 74.8 average 90%
Bankstown Airport AWS 28.9 +0.4 40.5 26th 18.0 -0.3 12.4 21st 40.6 92.0 low 44%
Camden Airport AWS 29.5 -0.3 39.9 24th 16.2 -0.8 9.4 17th 63.6 79.6 average 80%
Campbelltown (Mount Annan) 29.3 -1.2 40.0 24th 16.0 -1.3 9.6 17th 68.2 80.8 average 84%
Canterbury Racecourse AWS 27.3 -0.7 39.5 26th 17.7 -0.9 11.8 21st 41.4 78.0 average 53%
Cooranbong (Lake Macquarie AWS) 27.1 -2.0 37.8 26th 16.6 -1.4 10.5 17th 104.8 110.7 high 95%
Gosford AWS 26.6   38.7 26th 17.6   12.2 17th 119.6
Holsworthy Aerodrome AWS 28.4   39.6 26th 17.0   10.4 21st 48.4
Holsworthy Defence AWS 28.3   41.2 26th 16.4   10.8 21st 59.6
Horsley Park Equestrian Centre AWS 28.4 -1.7 39.1 26th 16.9 -1.1 12.0 21st 65.2 73.4 average 89%
Katoomba (Farnells Rd) 23.6 +0.2 33.0 24th 11.7 -1.2 6.3 16th 148.4 161.5 average 92%
Mangrove Mountain AWS 26.9 -0.6 37.3 26th 15.9 -1.1 10.6 17th 97.4 100.3 average 97%
Mount Boyce AWS 23.2 -1.2 33.2 24th 12.8 -0.7 6.5 16th 105.6 117.6 average 90%
Norah Head AWS 26.2 0.0 36.0 26th 19.3 -0.5 16.4 17th 88.4 81.1 average 109%
Parramatta North (Masons Drive) 28.1 -0.5 40.0 26th 16.9 -0.8 11.2 21st 55.8 100.7 average 55%
Penrith Lakes AWS 29.9 -1.3 40.7 26th 17.5 -1.2 12.3 17th 59.4 92.3 average 64%
Richmond RAAF 29.2 -1.3 39.8 26th 17.0 -0.9 10.5 17th 46.4 80.3 average 58%
Springwood (Valley Heights) 27.2 -1.9 37.5 26th 16.2 -1.3 13.1 8th 107.0 125.0 average 86%
Sydney (Observatory Hill) 27.4   37.1 26th 19.1   15.2 21st 97.8
Sydney Airport AMO 27.6 +0.9 41.6 26th 19.3 +0.3 15.8 21st 62.8 93.8 average 67%
Sydney Harbour (Wedding Cake West) 23.7 -1.1 29.5 26th 19.7 -0.7 16.8 2nd
Sydney Olympic Park AWS (Archery Centre) 28.1   41.0 26th 18.2   13.0 21st 53.8
Terrey Hills AWS 25.3 -1.7 37.5 26th 17.4 -1.1 13.4 21st 139.8 97.0 high 144%

Daily maximum temperatures for January 2021
12345678910111213141516171819202122232425262728293031
Badgerys Creek AWS21.722.127.528.629.325.424.024.126.529.630.333.931.537.734.628.929.032.825.222.530.037.237.340.539.440.622.823.621.829.924.2
Bankstown Airport AWS22.223.027.029.530.225.823.923.325.928.829.533.630.437.030.429.026.632.325.522.828.737.233.138.536.440.523.723.722.730.924.7
Camden Airport AWS21.722.127.228.930.125.523.325.027.630.030.934.432.238.535.528.728.633.625.022.130.036.836.639.938.739.723.123.121.830.423.1
Campbelltown (Mount Annan)22.622.026.529.430.525.223.224.927.130.230.734.831.938.932.728.827.633.825.521.729.837.336.040.038.739.622.322.921.630.422.9
Canterbury Racecourse AWS21.522.526.328.228.624.122.522.124.327.427.630.329.233.428.726.025.029.623.722.827.034.632.135.432.539.523.322.523.130.523.0
Cooranbong (Lake Macquarie AWS)20.321.626.229.325.024.323.823.826.326.728.727.935.428.027.226.128.326.322.325.733.431.233.331.937.823.321.722.328.126.2
Gosford AWS21.021.125.729.528.123.823.222.824.026.026.529.328.032.826.626.325.128.125.322.025.833.629.833.830.738.722.020.023.228.124.0
Holsworthy Aerodrome AWS22.522.126.429.529.024.423.422.725.728.729.632.730.436.929.328.925.932.624.322.028.137.432.238.435.639.622.822.721.930.223.7
Holsworthy Defence AWS21.621.226.128.929.523.322.221.524.829.930.933.630.538.931.228.925.132.922.820.828.837.934.339.336.541.221.421.021.429.621.7
Horsley Park Equestrian Centre AWS20.722.126.728.029.424.922.921.825.728.629.633.830.037.131.428.426.631.824.421.828.736.034.439.036.839.122.522.421.829.623.7
Katoomba (Farnells Rd)15.522.322.825.720.116.815.219.424.825.328.826.731.326.822.525.728.714.324.030.131.533.032.030.217.014.716.825.117.7
Mangrove Mountain AWS17.719.226.029.130.022.322.821.122.926.127.131.128.436.230.627.826.931.122.620.627.134.333.836.535.437.320.318.621.026.223.0
Mount Boyce AWS12.815.922.821.825.021.917.414.520.424.225.828.427.130.526.220.124.626.822.515.224.628.931.933.232.529.918.714.717.324.118.5
Norah Head AWS20.521.724.926.526.722.923.824.124.925.727.429.429.528.427.225.224.829.424.923.527.429.730.130.130.636.022.221.522.126.023.6
Parramatta North (Masons Drive)21.222.527.328.029.824.822.722.425.328.229.033.029.037.030.228.826.032.224.022.328.435.833.333.836.040.022.822.722.830.323.0
Penrith Lakes AWS21.522.427.628.431.626.723.723.227.330.231.435.032.439.635.630.129.833.925.422.730.437.138.139.940.040.723.022.721.830.724.6
Richmond RAAF20.722.027.327.631.026.424.123.126.529.530.433.831.338.733.529.528.432.224.822.029.635.937.139.237.939.822.922.822.330.025.2
Springwood (Valley Heights)18.819.324.026.327.723.621.820.324.527.428.532.229.537.233.328.327.030.324.225.627.033.235.035.635.237.521.219.720.627.121.0
Sydney (Observatory Hill)22.022.426.527.728.025.423.522.726.727.828.629.329.831.628.127.027.130.125.223.128.232.931.934.232.337.123.522.522.828.823.4
Sydney Airport AMO22.621.326.029.328.324.023.223.725.328.528.730.030.332.828.925.725.630.423.922.927.533.830.635.032.441.622.923.824.130.223.8
Sydney Harbour (Wedding Cake West)21.321.522.724.924.822.622.221.523.223.523.825.024.527.525.522.022.624.522.222.023.025.526.425.424.529.521.622.222.824.122.7
Sydney Olympic Park AWS (Archery Centre)21.322.727.229.430.724.723.022.525.428.028.631.130.034.629.028.225.532.224.022.728.135.431.537.034.241.022.823.123.331.123.3
Terrey Hills AWS19.020.324.626.627.022.521.120.623.225.925.629.026.931.025.924.923.927.022.121.224.832.028.933.129.737.520.318.821.527.121.8
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 January 2021
12345678910111213141516171819202122232425262728293031
Badgerys Creek AWS16.315.817.217.816.918.316.814.513.612.914.114.417.818.016.214.910.514.415.415.511.213.617.719.721.317.721.817.816.918.819.3
Bankstown Airport AWS17.716.517.318.618.219.318.015.714.014.616.017.019.220.519.317.412.816.817.516.512.416.320.521.223.120.721.818.918.320.120.8
Camden Airport AWS17.415.817.417.216.218.117.315.112.711.713.114.017.918.316.313.89.413.715.211.513.417.319.121.517.421.918.017.318.718.9
Campbelltown (Mount Annan)16.415.116.816.815.617.616.214.612.412.213.214.417.517.915.212.89.614.215.515.011.514.018.519.620.917.121.117.617.119.019.4
Canterbury Racecourse AWS17.816.717.318.017.619.518.217.213.914.215.616.018.220.220.517.212.015.818.716.611.815.820.620.521.119.821.218.618.419.821.4
Cooranbong (Lake Macquarie AWS)18.017.218.516.916.120.417.816.716.013.113.513.515.416.521.113.010.515.515.716.512.413.218.217.114.817.623.219.219.120.118.3
Gosford AWS17.517.418.517.517.520.118.816.616.314.415.716.117.019.121.615.612.216.119.816.412.415.419.918.518.119.821.418.918.719.620.1
Holsworthy Aerodrome AWS17.515.616.718.316.918.416.914.812.912.914.316.319.419.416.715.711.515.716.715.710.415.919.619.722.219.621.118.417.919.219.7
Holsworthy Defence AWS16.314.716.317.616.117.715.614.612.413.014.515.818.618.815.913.611.614.917.515.210.814.719.419.421.318.720.017.616.918.519.6
Horsley Park Equestrian Centre AWS16.215.816.818.616.518.716.114.914.213.315.315.517.719.016.915.212.715.017.615.412.014.820.119.621.118.921.417.917.618.920.2
Katoomba (Farnells Rd)9.28.414.312.612.69.17.98.89.29.912.213.415.413.46.38.09.68.68.113.017.715.019.015.410.810.613.315.0
Mangrove Mountain AWS15.914.615.316.816.118.015.312.913.912.513.913.915.417.218.713.910.614.616.014.612.014.419.718.717.320.019.917.116.917.918.7
Mount Boyce AWS10.28.811.114.613.013.19.88.59.410.210.913.713.916.914.86.58.511.313.09.89.113.518.118.917.120.517.212.011.714.315.9
Norah Head AWS18.017.418.219.618.420.519.817.617.617.519.119.120.720.420.917.816.419.121.117.516.918.821.921.721.121.320.919.019.020.120.7
Parramatta North (Masons Drive)16.615.816.218.017.217.816.515.412.813.215.015.517.019.020.216.611.815.516.715.811.215.420.520.119.519.021.418.317.819.020.2
Penrith Lakes AWS16.416.117.019.117.519.917.515.515.513.715.316.220.319.118.714.612.316.917.315.412.815.919.520.522.719.622.718.317.419.120.4
Richmond RAAF16.215.916.519.018.120.116.815.414.913.114.314.918.918.820.514.210.515.916.315.510.814.718.419.622.018.422.718.317.619.519.9
Springwood (Valley Heights)14.313.914.917.616.117.715.113.113.813.915.015.218.517.818.113.413.215.717.113.613.114.718.619.221.720.119.616.015.816.018.8
Sydney (Observatory Hill)17.816.118.020.419.319.818.417.616.717.018.218.820.920.820.617.316.318.421.117.015.218.322.122.221.921.721.318.618.619.721.8
Sydney Airport AMO18.216.817.420.019.520.119.516.717.917.419.620.621.021.719.917.616.218.720.917.415.819.922.221.823.022.718.718.219.721.2
Sydney Harbour (Wedding Cake West)18.916.818.120.818.420.618.817.817.318.719.520.521.821.620.818.617.719.920.417.817.318.921.222.222.022.021.119.119.319.622.0
Sydney Olympic Park AWS (Archery Centre)17.516.917.919.018.319.416.715.114.415.516.417.318.920.321.017.513.217.118.916.713.017.120.921.721.521.021.618.718.520.321.7
Terrey Hills AWS16.114.917.018.017.217.616.115.416.515.217.517.419.418.919.314.114.216.018.815.113.417.020.720.220.121.319.917.217.118.320.4
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 January 2021
12345678910111213141516171819202122232425262728293031
Abbotsbury (Fairfield (City Farm)) - 1.0 3.0 1.0 17.0 4.0 1.0 3.0 - - - - - - - - - - - 1.0 - - - - - - - 2.0 7.0 13.0 -
Abbotsford (Blackwall Point Rd) 7.0 0.4 4.0 1.0 10.0 - 3.0 6.0 0.4 - - - - - - - - - - 0.4 - - - - - - - 16.0 4.0 12.0 1.0
Audley (Royal National Park) 1.0 3.0 14.0 3.0 6.0 2.0 1.0 8.0 - - - - - - - - - - - - - - - - - - - 20.0 12.0 19.0 -
Avalon Beach (Avalon (Palmgrove Rd)) 7.0 5.6


























Badgerys Creek AWS - 2.6 2.2 1.8 11.8 12.8 0.2 4.2 - - - - - - - - - - - 0.4 - - - - - - 0.2 2.6 8.0 18.6 1.6
Bankstown Airport AWS - 0.2 2.6 0.4 6.0 7.0 - 3.6 0.2 - - - - - - - - - - 0.6 - - - - - - - 5.6 5.6 8.0 0.8
Baulkham Hills Eucalyptus Ct 2.5 - 2.0 - 17.0 18.5 8.5 10.5 1.0 - - - - - - - - - - 0.5 - - - - - - - 7.0 9.5 4.5 2.0
Belrose (Evelyn Place) 1.8 1.6 6.2 0.4 17.6 41.2 1.4 3.4 - - - - - - 3.8 - - - 0.8 3.0 - - - - - - - 7.0 16.2 48.2 1.4
Blackheath (Wombat Street) 8.0 18.0 5.0 3.0 13.0 - 4.0 8.0 - - - - - - - - - - - 5.0 - - - - 12.0 - - 10.0 17.0 16.0 3.0
Box Hill (McCall Gardens) 1.0 - 1.0 - 13.0 - 4.0 5.0 - - - - - - - - - - - - - - - - - - - 1.0 4.0 5.0 3.0
Bringelly (Maryland) - 2.0 3.0 1.0 4.0 5.0 - 2.0 - - - - - - - - - - - - - - - - - - - 5.0 5.0 15.0 5.0
Camden (Brownlow Hill) - 2.2 5.6 1.4 5.2 4.4 - 1.8 - - - - - - - - - - - 2.0 - - - - 0.2 - 0.4 5.2 2.0 24.0 6.4
Camden Airport AWS - 1.8 6.4 1.2 5.6 3.0 - 0.2 - - - - - - - - - - - 1.4 - - - - - - 0.2 7.0 3.6 25.6 7.6
Campbelltown (Kentlyn (Georges River Roa - 3.0 7.0 - 6.0 - - 2.0 - - - - - - - - - - - - - - - - - - - 11.0 4.0 15.0 3.0
Campbelltown (Mount Annan) - 1.8 12.6 0.2 6.6 1.6 - 0.6 0.2 - - - - - - - - - - 0.8 - - - - - - 0.2 7.0 3.4 17.8 15.4
Canterbury Racecourse AWS 2.0 0.2 3.8 2.4 6.8 3.2 1.4 4.0 0.2 - - - - - - - - - - - - - - - - - - - 5.2 11.8 0.4
Castle Cove (Rosebridge Ave) 2.2 3.5 7.0 1.0 24.0 44.0 3.0 8.0 0.5 - - - - - 0.5 - - - 3.0 3.5 - - - - - - - 11.0 19.0 43.0 2.0
Castle Hill (Kathleen Ave) - - - 0.9 15.7 6.8 3.0 6.7 1.2 - - - - - - - - - - 1.4 - - - - - - - 2.2 7.0 3.9 2.0
Chatswood Bowling Club 5.0 5.0 6.0 - 24.0 17.0 3.0 4.0 - - - - - - - - - - 1.0 1.0 - - - - - - - 11.0 11.0 25.0 1.0
Collaroy (Long Reef Golf Club) - 0.8 5.8 1.2 8.2 42.6 - - - - - - - - 2.0 - - - - 2.0 - - - - - - - 8.4 8.6 19.4 0.6
Colo Heights (Mountain Pines) 6.4 5.2 3.6 0.2 7.6 - 11.8 4.8 0.8 - - - - 0.4 - - - - - 4.2 - - - - - - 5.8 6.6 29.4 3.8 6.4
Concord (Brays Rd) 5.2 - 3.0 2.0 16.6 1.6 0.8 3.6 0.2 - - - - - - - - - - 0.2 - - - - - - - 13.8 6.0 9.4 0.8
Concord Golf Club 3.0 - 3.4 - 19.2 2.2 1.6 3.6 0.6 - - - - - - - - - -







12.4 5.8 8.4
Cooranbong (Lake Macquarie AWS) 4.8 2.8 1.4 5.8 14.6 - 0.4 0.2 7.6 2.0 - - - - 2.6 - - - - 3.6 - - - - - - - 16.4 27.6 14.0 1.0
Darkes Forest (Kintyre) - 3.0 16.0 1.0 7.0 12.0 2.0 9.0 - - - - - - - - - - - 3.0 - - - - 2.0 - 4.0 20.0 10.0 29.0 4.0
Dover Heights (Portland St) 0.6 3.0 11.8 0.2 15.8 4.2 1.4 5.2 - - - - - - 1.6 - - - 0.6 0.6 - - - - - - 0.4 14.0 5.8 17.8 0.8
Erskine Park Reservoir - 1.0 1.0 - 21.0 - 1.0 6.0 - - - - - - - - - - - - - - - - - - - 4.0 9.0 9.0 1.0
Faulconbridge (Great Western Hwy) 7.0 9.0 4.0 16.0 8.0 1.0 2.0 2.0 - - - - - - - - - - - 4.0 1.0 - - 5.0 - - 1.0 13.0 22.0 19.0 5.0
Faulconbridge (St Georges Crescent) 6.8 7.8 4.8 16.0 8.6 1.0 2.2 3.4 0.2 - - - - - - - - - - 5.4 - - - 1.2 - - 1.0 14.2 23.6 23.2 9.8
Gears (Wyong River) 1.0 -



- 1.0 1.0 - - - - -

-









9.0 7.0 -
Gosford AWS 1.8 - 0.6 0.2 21.0 0.6 - 3.8 0.8 - - - - - - - - - - 4.0 0.2 - 4.4 - - - 0.2 23.4 29.4 29.2 -
Holsworthy Aerodrome AWS - 2.2 5.4 1.0 9.8 2.6 - 1.6 - - - - - - - - - - 0.4 0.6 - - - - - - - 4.2 7.4 12.2 1.0
Holsworthy Defence AWS - 3.6 7.6 0.6 7.0 0.2 - 2.4 - - - - - - - - - - - 0.6 - - - - - - - 12.4 6.0 17.6 1.6
Hornsby (Swimming Pool) 2.8 0.6 2.2 - 12.6 18.0 2.2 2.0 - - - - - - 1.0 - - - - 1.0 - - 12.8 - - - 0.4 10.2 9.6 15.6 8.2
Horsley Park Equestrian Centre AWS 0.2 0.8 1.4 0.4 12.0 12.0 0.4 2.8 - - - - - - 1.2 - - - - 1.4 - -
- - - - 6.6 9.8 15.6 0.6
Katoomba (Farnells Rd) 8.8 16.6 3.0 11.2 - 12.2 13.8 0.4 0.2 - - - - - - - - 9.6 0.2 - - - 5.0 - 0.8 22.6 25.2 12.6 6.2
Kurrajong Heights (Bells Line of Road) 5.6 4.4 4.4 7.6 9.0 1.8 17.2 6.4 1.0 - - - - - - - - - - 4.0 - - - - 13.6 27.8 47.2 6.0
Lucas Heights (ANSTO) - - 8.0 1.0 6.2 - 0.6 - - - - - - - - - - - - - - - - - - - 0.1 12.8 7.0 21.6
Mangrove Mountain AWS 3.2 2.0 2.6 0.2 11.8 0.4 1.8 3.2 2.8 3.2 - - - - 2.0 - - - - 8.2 0.2 - - - - - - 16.2 25.4 14.2 -
Marrickville Golf Club 3.0 1.0 6.0 5.0 9.0 3.0 1.0 4.0 1.0 - - - - - - - - - - - - - - - - - - 15.0 8.0 15.0 -
Menangle Bridge (Nepean River) - 3.0 12.0 1.0 8.0 - - - - - - - - - - - - - - 1.0 - - - - - - - 16.0 1.0 13.0 3.0
Mona Vale Golf Club - 3.6 8.4 0.2 9.8 2.4 0.2 2.8 - - 0.2 - 0.2 - 17.8 - - - 0.2 1.6 0.2 - 0.8 - - 0.2 - 9.4 10.2 32.4 0.8
Mount Boyce AWS 8.2 16.2 4.8 2.6 11.6 0.2 3.8 6.4 0.2 0.4 - 0.2 - - - - - - - 4.6 0.4 - - - 8.4 0.2 - 8.8 16.4 10.4 1.8
Mount Wilson (Clarine) 7.8 5.6 6.6 9.6 24.4 0.8 10.8 7.6 1.0 - - - - - - - - - - 5.0 - - - - - - 0.4 11.4 18.4 15.8 16.6
Norah Head AWS 3.2 4.2 1.2 0.4 21.8 - - 4.4 0.8 2.2 - - 0.2 - 1.0 - - - - 4.2 - -
- - 0.2 - 24.2 6.6 13.2 0.6
North Parramatta (Burnside Homes) 2.0 0.5 1.0 - 8.0 7.5 4.0 7.0 1.5 - - - - - - - - - - 1.0 - - - - - - - 3.0 7.0 7.5 1.0
North Rocks (Muirfield Golf Club) 3.0 - 1.0 0.5 16.0 15.5 1.5 6.0 0.5 - - - - - - - - - - 0.5 - - - - - - - 7.0 5.5 5.0 1.0
North Ryde Golf Club 7.0



4.0



- - - - - - - - - 1.0 - - - - - - - 8.0 7.0 11.0 -
Palm Grove (Lyrebird Lane) 7.0 - 2.0 - 16.0 1.0 2.0 5.0 10.0 - - - - - - - - - - 5.0 - - - - - - - 7.0 24.0 30.0 -
Parramatta North (Masons Drive) 3.0 0.4 1.4 0.2 9.0 8.0 4.2 7.2 1.6 - - - - - - - - - - 1.4 - - - - - - - 3.4 7.0 8.4 0.6
Peakhurst Golf Club 1.0 - 5.0 2.0 6.0 3.0 2.0 6.0 - - - - - - 1.0 - - - - 1.0 - - - - - - - 16.0 7.0 11.0 -
Penrith Lakes AWS 0.6 0.8 1.6 2.8 11.0 - 1.0 3.0 0.2 - - - - - - - - - - 0.4 - - - 0.4 - - - 0.8 10.6 15.8 10.4
Prospect Reservoir 2.0 - 2.0 - 17.0 6.0 1.0 5.0 - - - - - - - - - - - 1.0 - - - - - - - 5.0 7.0 11.0 1.0
Putty (The Gibba) - - - - - - - - - - - - -

- - - - - 3.0 - - - - - - 4.0 10.0 8.0 -
Randwick (Randwick St) 9.4 3.2 15.2 0.1 8.2 1.0 0.8 6.4 0.1 - - - - - 0.4 - - - - 1.0 - - - - - - - 16.6 6.8 28.6 0.2
Richmond - UWS Hawkesbury 1.0 5.8 5.0 - 1.4 1.4 0.4 - - - - - - - - 0.1 - - 4.6 - - 2.0 6.6 17.0
Richmond RAAF 0.8 2.0 1.8 5.0 12.4 0.2 1.8 2.6 0.2 0.2 - - - - - - - - - 0.2 - - - 1.2 - - - 2.6 5.2 9.0 1.2
Rose Bay (Royal Sydney Golf Club) 1.4 2.1 14.4 0.2 12.2 1.0 2.0 5.2 - - - - - - 1.6 - - - - 2.4 - - - - - - - 16.6 5.4 25.6 0.6
Sans Souci (Public School) - 1.0 4.0 7.0 16.0 3.0 - 2.0 3.0 - - - - - - - - - - - - - - - - - - 12.0 4.0 11.0 -
Seven Hills (Radio FM 103.2) 1.0 - 1.0 - 18.5 14.5 1.0 4.0 - - - - - - - - - - - 1.0 - - - - - - - 2.0 6.5 5.5 1.0
Shanes Park (South Creek Road) 0.8 0.2 1.4 1.2 33.6 - 1.0 4.2 - - - - - - - - - - - - 0.2 - 0.4 17.2 - - - 4.2 9.6 11.4 10.6
Springwood (Valley Heights) 6.6 8.0 4.6 7.2 8.4 0.8 2.6 3.4 - - - - - - - - - - - 4.4 - - - 4.4 - - 0.6 9.2 18.6 23.6 4.6
St Ives (Richmond Avenue) 3.0 1.2 4.4 - 8.8 32.0 5.2 2.0 - - - - - - 6.8 - - - - 2.0 - - - - - - - 7.0 21.0 30.2
Sydney (Observatory Hill) 4.2 5.2 7.8 0.6 13.0 1.6 1.8 5.4 - - - - - - - - - - - 1.2 0.2 - - - - - - 19.0 7.8 29.6 0.4
Sydney Airport AMO 5.8 1.0 5.6 0.8 6.6 0.6 0.2 5.6 0.4 - - - - - 1.0 - - - - - 0.2 - - - - - - 9.0 6.2 19.6 0.2
Sydney Botanic Gardens 4.1 4.6 9.8 0.4 10.8 2.2 0.8 5.0 - - - - - - 1.8 - - - - 1.2 - - - - - - - 16.8 9.6 32.6 0.8
Sydney Olympic Park AWS (Archery Centre) 3.0 0.2 3.2 0.4 18.6 3.2 2.8 2.8 0.2 - - - - - - 0.2 - - - 0.4 - - - - - - - 7.8 4.4 5.8 0.8
Terrey Hills AWS 1.4 1.6 6.2 - 14.2 11.4 4.6 2.0 0.2 - - - - - 15.8 - - - 0.4 1.8 - 0.2 0.2 - - - - 13.2 19.8 46.0 0.8
Wahroonga (Ada Avenue) 3.4 1.2 3.4 0.2 13.4 22.8 2.4 4.2 - 0.2 - - - - 5.0 - - - - 2.0 - - 4.8 - - - 0.4 11.4 13.8 19.6 1.8
Warragamba 1.0 4.0 7.0 - 9.0 1.0 2.0 3.0 - - - - - - - - - - - 3.0 - - - - - - - 2.0 10.0 38.0 -
Wedderburn (Booalbyn) - 2.0 12.0 - 9.0 - - 1.0 - - - - - - - - - - - 1.0 - - - - - - - 11.0 3.0 10.0 6.0
Wyong (Kulnura (Jeavons)) 8.0 4.0 3.0 - 43.0 - 3.0 1.0 6.0 3.0 - - - - - - - - - 2.0 - - - - - - - 6.0 26.0 6.0 -
Wyong (Mount Elliot) 3.0 1.0 1.0 - 21.0 1.0 - 3.0 1.0 - - - - - 8.0 - - - - 5.0 - - 1.0 - - - - 32.0 39.0 44.0 -
Wyong (Olney Forest) 12.0 7.0 3.0 2.0 11.0 - 6.0 1.0 5.0 9.0 - - - - - - - - - 9.0 1.0 - - - - - - 26.0 62.0 34.0 1.0
Yarramalong (Lewensbrook) 4.0 4.0 1.0 - 22.0 - 4.0 2.0 1.0 2.8 - - - - 2.0 - - - - - 2.0 - - - - - - 8.0 40.0 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

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 11 am on Monday 1 February 2021. 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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