Sydney in May 2017: a dry month with warm days and a cool finish

Rainfall was below average across Sydney during May, with fewer rain days and more sunshine than average. Days were warm across the city, with a cool spell at the end of the month which brought Observatory Hill its coldest May night since 1999.

A dry end to autumn

  • Rain was below average across Sydney during May, but not as dry as May 2016
  • There were nine rain days at Observatory Hill, below the May average of 13 days, while only two recorded more than 5 mm (average five days)
  • Rain was recorded across the city on the 20th, while parts of eastern Sydney recorded falls above 10 mm on the 4th and 15th
  • Sydney Airport recorded a daily average of 7.4 hours of sunshine, above the May average of 6.3 hours

A warm month with a cool finish

  • Daytime temperatures were above average across the city
  • Overnight temperatures were also above average at Observatory Hill but closer to average in other areas
  • Only six days failed to reach 20 °C at Observatory Hill, the equal fifth-fewest on record (average 18 days)
  • Only three nights dropped below 10 °C (average eight nights) at Observatory Hill, while seven nights fell below 5 °C at Richmond (average 8 nights)
  • Temperatures were cool at the end of the month, with Observatory Hill recording a minimum temperature of 7.1 °C on the 30th, the coldest May night since 6.6 °C on 16 May 1999, although western Sydney experienced a colder night in late May 2016

Further information

Media
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Extremes in May 2017
Hottest day 26.4 °C at Sydney Airport AMO on the 1st
Warmest days on average 21.4 °C at Bankstown Airport AWS
Coolest days on average 19.0 °C at Springwood (Valley Heights)
Coldest day 14.1 °C at Terrey Hills AWS on the 31st
Coldest night -0.9 °C at Camden Airport AWS on the 30th
Coolest nights on average 6.9 °C at Camden Airport AWS
Warmest nights on average 12.5 °C at Sydney (Observatory Hill)
Warmest night 17.1 °C at Sydney Airport AMO on the 20th
Warmest on average overall 16.9 °C at Sydney (Observatory Hill)
Coolest on average overall 13.8 °C at Camden Airport AWS
Wettest overall 85.4 mm at Mona Vale Golf Club
Driest overall 6.0 mm at Milperra Bridge (Georges River)
Wettest day 34.4 mm at Terrey Hills AWS on the 15th
Strongest wind gust 63 km/h at Kurnell AWS on the 31st
63 km/h at Little Bay (The Coast Golf Club) on the 31st

Summary statistics for May 2017

Maximum temperatures
(°C)
Minimum temperatures
(°C)
Rainfall
(millimetres)
Mean for
May
2017
Diff
from
average
Highest for
May
2017
Mean for
May
2017
Diff
from
average
Lowest for
May
2017
Total for
May
2017
Average
for
May
Rank of
May
2017
Fraction of
May
average
Badgerys Creek AWS 20.8 +0.1 24.5 1st 8.0 +0.3 -0.1 30th 15.6 38.3 average 41%
Bankstown Airport AWS 21.4 +0.9 25.2 6th 9.3 -0.2 2.2 30th 9.8 65.7 v low 15%
Camden Airport AWS 20.7 +0.1 24.1 6th 6.9 -0.1 -0.9 30th 5.8 53.5 low 11%
Campbelltown (Mount Annan) 20.8 -0.3 24.3 6th 7.6 +0.4 0.0 30th 15.6 39.0 low 40%
Canterbury Racecourse AWS 20.9 +0.3 25.2 6th 9.2 -0.1 2.2 30th 17.2 78.1 low 22%
Holsworthy Aerodrome AWS 20.8   24.7 6th 8.4   0.8 30th 12.8


Horsley Park Equestrian Centre AWS 20.8 +0.3 24.4 6th 9.6 +0.6 1.9 30th 11.8 45.1 low 26%
Parramatta North (Masons Drive) 21.2 +0.6 25.0 6th 9.1 -0.8 2.0 30th 8.2 68.3 v low 12%
Penrith Lakes AWS 21.3 +0.2 26.1 1st 9.5 +0.2 2.4 30th 10.2 37.5 low 27%
Prospect Reservoir 20.9 +0.6 24.7 6th 9.6 -0.3 2.6 30th 9.9 69.9 low 14%
Richmond RAAF 21.1 +0.3 25.8 1st 7.6 0.0 -0.4 30th 15.4 46.1 low 33%
Springwood (Valley Heights) 19.0 -0.4 24.0 6th 10.0 +0.7 4.0 30th 30.0 71.4 average 42%
Sydney (Observatory Hill) 21.2 +1.7 26.2 6th 12.5 +0.9 7.1 30th 30.0 118.6 low 25%
Sydney Airport AMO 21.1 +1.0 26.4 1st 12.4 +1.4 6.8 30th 31.8 96.9 low 33%
Terrey Hills AWS 19.2 -0.3 22.8 1st 11.0 +0.3 2.9 30th 63.0 53.3 average 118%

Daily maximum temperatures for May 2017

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31
Badgerys Creek AWS 24.5 23.0 17.8 19.0 22.0 24.2 20.3 19.6 20.7 21.3 20.9 19.8 21.7 21.1 20.6 20.7 20.4 22.2 18.5 22.5 22.5 21.5 23.2 22.1 20.2 19.8 20.6 23.0 17.3 17.9 15.7
Bankstown Airport AWS 25.0 23.2 19.4 20.1 22.7 25.2 21.2 19.0 21.1 21.7 21.8 19.7 22.8 21.0 21.3 21.0 21.2 22.2 20.6 23.0 22.6 21.7 23.9 22.8 20.8 20.6 21.7 23.3 17.3 17.8 16.4
Camden Airport AWS 24.0 22.1 18.5 19.5 22.1 24.1 20.3 19.2 21.1 21.0 21.4 19.9 21.9 19.8 21.0 20.9 20.2 21.9 17.9 22.6 22.5 21.7 23.0 21.6 20.4 20.5 20.6 22.2 16.5 17.9 15.8
Campbelltown (Mount Annan) 23.9 22.6 18.7 18.9 22.2 24.3 20.8 19.0 21.3 21.2 21.3 20.0 21.9 20.1 20.9 21.2 20.4 22.3 18.4 22.9 22.4 21.6 22.9 21.4 20.4 20.5 21.0 22.0 16.5 17.8 15.9
Canterbury Racecourse AWS 24.9 22.9 18.5 19.8 22.5 25.2 20.9 18.7 19.3 20.5 20.4 19.6 22.2 19.2 20.3 20.9 20.8 22.9 20.4 23.0 21.7 21.8 23.9 22.3 21.3 20.1 21.9 22.9 17.1 17.5 15.5
Holsworthy Aerodrome AWS 24.4 22.4 18.5 19.7 22.2 24.7 20.7 18.6 20.5 21.5 20.9 19.3 22.3 20.3 20.8 21.2 20.4 21.3 19.4 22.6 22.0 21.6 23.3 21.8 20.4 20.2 20.7 22.7 17.0 17.6 15.7
Horsley Park Equestrian Centre AWS 24.4 22.9 17.9 19.9 22.3 24.4 20.1 19.8 20.8 21.4 21.3 19.9 21.6 20.2 20.9 20.7 20.3 22.3 18.9 22.5 22.6 21.3 23.0 22.1 20.4 20.4 20.4 22.3 17.1 17.2 15.3
Parramatta North (Masons Drive) 24.5 23.3 18.3 19.8 22.3 25.0 21.0 19.5 20.3 21.7 21.6 19.8 21.8 19.7 21.0 21.5 21.3 21.7 20.3 23.0 23.0 21.5 23.5 22.6 21.2 20.6 22.0 22.8 18.0 17.2 17.0
Penrith Lakes AWS 26.1 23.7 18.2 19.5 22.7 25.3 21.1 19.8 21.2 21.9 22.6 20.4 22.1 21.3 21.2 21.0 21.1 22.1 17.1 22.5 22.3 21.8 23.7 23.2 20.7 20.4 21.3 23.7 18.6 17.7 16.6
Prospect Reservoir 24.3 23.7 18.5 20.0 22.1 24.7 20.5 19.5 20.8 21.1 21.2 20.1 22.1 20.4 20.9
20.7 21.8 19.5 21.9 22.0 21.8 24.4 22.0 20.4 19.6 21.0 22.0 16.9 17.0 15.5
Richmond RAAF 25.8 24.2 18.1 20.9 22.7 25.7 21.2 19.9 20.5 21.4 21.4 19.2 21.9 19.4 21.1 20.8 20.9 22.2 17.6 22.0 21.7 21.4 23.8 23.6 20.2 19.9 20.6 23.2 18.5 18.3 16.5
Springwood (Valley Heights) 23.9 22.9 16.4 17.2 20.2 24.0 19.5 16.8 17.8 19.9 19.3 18.2 19.4 18.2 19.5 18.2 18.0 19.2 16.1 20.0 19.6 18.9 21.0 21.3 18.0 18.2 18.5 21.7 16.8 17.2 14.5
Sydney (Observatory Hill) 25.6 23.9 18.4 20.0 21.6 26.2 22.2 20.1 21.0 21.7 22.1 19.6 21.3 18.7 20.8 21.9 20.2 21.5 20.4 23.2 23.5 21.0 22.6 22.7 21.4 20.8 20.6 23.7 18.3 17.1 16.3
Sydney Airport AMO 26.4 24.6 18.6 20.1 23.3 26.1 21.0 17.9 18.8 19.5 19.7 19.6 22.7 19.9 19.1 20.2 21.5 21.8 21.8 23.6 21.0 21.0 24.3 23.7 20.7 19.0 20.9 24.6 18.2 19.0 15.2
Terrey Hills AWS 22.8 22.3 15.5 17.8 21.3 22.7 19.3 17.9 18.4 19.6 18.7 18.4 20.0 16.8 18.6 18.8 19.0 20.0 18.1 21.4 20.4 19.4 21.6 21.5 19.1 18.3 20.0 21.1 15.8 15.6 14.1
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 May 2017

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31
Badgerys Creek AWS 7.2 9.1 10.8 10.2 8.3 6.5 8.0 4.2 6.3 6.8 7.2 8.5 10.6 10.3 10.5 5.4 4.5 8.7 13.1 14.9 9.3 9.5 10.4 8.8 5.8 5.1 8.0 5.2 6.9 -0.1 6.5
Bankstown Airport AWS 9.0 10.9 12.3 10.0 9.4 8.0 8.7 7.8 8.4 7.9 8.3 10.1 11.6 10.9 11.4 7.2 6.6 9.6 11.5 15.4 11.5 10.5 12.8 10.5 7.2 6.9 10.6 6.7 8.4 2.2 6.7
Camden Airport AWS 8.4 9.3 10.2 8.8 8.0 5.9 6.7 2.0 5.8 3.7 3.6 6.0 10.0 8.5 9.0 4.7 3.1 6.9 11.6 14.5 7.6 8.5 10.4 8.1 5.0 3.2 5.5 6.2 6.5 -0.9 6.0
Campbelltown (Mount Annan) 7.1 9.5 10.0 9.4 8.2 6.4 8.2 3.7 6.3 4.6 5.0 6.8 10.0 9.8 9.1 5.2 5.2 8.7 12.2 15.0 8.9 10.0 10.0 9.0 7.1 5.7 7.5 4.8 6.5 0.0 6.8
Canterbury Racecourse AWS 9.2 9.9 12.9 9.2 9.5 8.5 9.0 8.2 7.8 8.7 8.0 10.6 10.5 10.5 12.0 8.3 5.7 8.3 10.9 15.6 10.5 9.7 12.1 10.6 8.5 5.8 10.5 6.9 8.0 2.2 6.7
Holsworthy Aerodrome AWS 7.7 10.5 10.3 8.2 8.1 7.2 9.9 6.5 7.8 6.6 7.2 8.2 10.8 10.5 10.1 7.3 4.7 8.6 13.1 14.9 9.5 10.0 11.3 10.6 7.3 6.0 8.6 5.9 6.2 0.8 5.9
Horsley Park Equestrian Centre AWS 9.3 11.2 12.1 11.0 9.0 8.3 11.6 7.5 6.5 9.0 9.1 10.8 11.3 11.7 12.0 9.2 6.5 8.9 13.5 15.3 10.9 11.7 12.2 11.6 7.3 6.7 10.1 7.3 7.3 1.9 5.6
Parramatta North (Masons Drive) 9.0 11.2 11.2 8.4 9.5 8.6 11.0 6.0 7.3 7.6 8.2 9.0 11.2 10.8 10.8 7.2 6.4 8.8 12.2 15.3 10.3 10.2 12.8 11.4 6.6 6.2 10.0 6.4 8.3 2.0 6.9
Penrith Lakes AWS 9.7 11.3 12.4 11.5 10.3 9.2 10.7 6.2 7.0 7.0 7.3 9.6 12.5 11.8 13.1 7.8 6.9 9.7 12.1 15.4 11.2 10.7 12.7 11.3 6.6 6.4 9.3 7.6 7.9 2.4 6.3
Prospect Reservoir 10.8 12.0 11.5 10.4 9.2 10.0 11.1 7.0 7.0 7.6 8.7 10.3 11.8 12.2 12.2 7.1 6.4 8.9 11.5 15.0 11.5 10.5 12.7 11.9 7.0 7.2 10.0 8.5
2.6 6.7
Richmond RAAF 8.5 9.3 10.0 10.0 7.9 7.4 9.4 3.7 5.3 4.8 4.6 8.1 10.5 9.4 9.8 5.6 5.0 7.1 11.2 14.4 9.9 9.2 11.7 10.1 4.2 4.1 6.8 5.6 10.2 -0.4 3.6
Springwood (Valley Heights) 10.5 12.8 10.5 10.2 10.2 10.1 11.1 6.4 8.8 8.5 8.4 10.6 10.8 11.3 10.7 8.4 8.5 11.0 13.6 14.2 10.8 11.7 12.7 12.4 8.4 7.0 10.5 9.0 9.1 4.0 7.4
Sydney (Observatory Hill) 13.2 14.6 14.9 11.8 12.7 12.7 14.6 10.2 10.7 10.5 10.9 12.5 14.0 14.7 13.1 11.1 9.8 12.6 14.8 16.7 13.8 13.0 14.7 14.8 11.6 10.6 12.6 11.9 11.4 7.1 9.7
Sydney Airport AMO 13.4 14.3 15.6 12.0 13.2 12.5 14.5 10.5 10.6 10.5 10.7 12.2 14.4 13.9 13.0 10.8 9.8 12.6 16.6 17.1 13.4 12.9 15.0 14.2 12.1 9.8 11.7 10.3 10.8 6.8 10.4
Terrey Hills AWS 12.4 13.8 12.6 10.5 11.0 11.6 12.7 7.8 8.3 8.5 9.0 11.4 12.0 13.1 12.1 9.9 8.6 11.8 15.8 15.3 12.7 12.3 13.8 13.3 9.6 8.8 11.1 12.0 9.5 2.9 7.8
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 May 2017

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31
Abbotsbury (Fairfield (City Farm)) - - - - - - - - - - - - - - - - - - - 7.0 - - - 2.0 - - - - - - -
Abbotsford (Blackwall Point Rd) - - - - - - - - - - - - 4.0 - - - - - - 10.0










Audley (Royal National Park) - - - 15.0 - - - - - - - - - - - - - - - 12.0 - - - 3.0 - - - - - - -
Avalon Beach (Avalon (Palmgrove Rd)) - - - 27.0 - - - - - - - - - - - - - - - 24.8










Badgerys Creek AWS - - - 1.0 - - - - - - - - - - 1.2 - - - - 9.0 - - - 3.2 - - - - 0.2 0.6 0.4
Bankstown Airport AWS - - - 0.4 - - - - - - - - - - - - - - - 6.6 - - - 2.2 - - - - - 0.6 -
Baulkham Hills Eucalyptus Ct - - - - - - - - - - - - - - - - - - - 7.5 0.5 - - - - - - - - - -
Belrose (Evelyn Place) - - - 2.0 - - 0.4 - - - - - 3.8 - 19.0 - - - - 18.8 - - - 1.4 - - - - 0.4

Box Hill (McCall Gardens) - - - - - - - - - - - - - - - - - - 1.0 10.0 - 1.0 - 2.0 - - - - - - -
Camden Airport AWS 0.2 - - 0.4 - - - - 0.2 - - - - - - - - - - - - - - 4.0 - - - 0.2 - - 0.8
Campbelltown (Kentlyn (Georges River Roa - - - 1.0 - - - - - - - - - - - 1.0 - - - 7.0 - - 1.0 5.0 - - 1.0 - 1.0 - -
Campbelltown (Mount Annan) - - - 1.4 - - - - - - - - - - 0.2 - - - - 6.0 - - - 7.6 - - - 0.2 0.2 - -
Canterbury Racecourse AWS - - - 0.6 - - 0.4 0.2 - - - - - 0.2 - 0.2 - - - 8.8 0.2 - - 6.6 - - - - - - -
Castle Cove (Rosebridge Ave) - - - 2.0 - - - - - - - 1.0 4.5 - 15.0 - - - - 18.0 - - - 1.5






Castle Hill (Kathleen Ave) - - - - - - - - - - - - - - - - - - - 9.9










Chatswood Bowling Club - - - - - - 2.0 - - - - - 2.0 - 2.0 - - - - 14.0 - - - 1.0 - - - - - - -
Collaroy (Long Reef Golf Club) - 0.6 9.8 - - - 0.6 - - - - - 4.6 - 2.8 - - - - 22.4 1.0 - - 2.4 - - 3.4 - 0.4

Concord (Brays Rd) - - - 2.4 - - - - - - - - 0.8 - - - - - - 9.2 - - - 0.4






Concord Golf Club - - - 3.2 - - - - - - - - 1.0 - - - - - - 10.8 - - - - - - - - 0.2

Frenchs Forest (Frenchs Forest Rd) - - - 2.0 - - - - - - - - 4.0 - 17.0 - - - - 18.0 - - - 1.0 - - - - - - -
Holsworthy Aerodrome AWS - - - 5.0 - - - - - - - - - - - - - - - 6.2 0.2 - - 1.4 - - - - - - -
Horsley Park Equestrian Centre AWS - - - - - - - - 0.2 - - - - - 0.4 - - - - 7.2 - - - 3.8 - - - - 0.2 - -
Lucas Heights (ANSTO) - - - 4.0 - - - - - - - - - - - - - - - 8.8 - - - 2.8 - - - -


Marrickville Golf Club - - - 3.0 1.0 - 1.0 - - - - - - - - - - - - 10.0 - - - 4.0 - - - - - - -
Milperra Bridge (Georges River) - - - - - - - - - - - - - - - - - - - 5.0 - - - 1.0 - - - - - - -
Mona Vale Golf Club 0.2 - 1.2 20.0 - 0.2 0.4 - - - - - 3.0 0.4 28.6 - - 0.2 1.0 27.6 0.2 0.2 - 1.6 - 0.2 - 0.4 - - -
Mount Annan Botanic Garden - - - 1.4 - - - - - - - - - - - - - - - 6.4 0.2 - - 5.0 - - - - - - -
North Parramatta (Burnside Homes) - - - - - - - - - - - - - - - - - - - 7.5 - - - - - - - - - - -
North Rocks (Muirfield Golf Club) - - - - - - 1.0 - - - - - - - 0.5 - - - - 7.5 - - - 0.5 - - - - - - -
Parramatta North (Masons Drive) - - - 0.2 - - - - - - - - 0.2 - - - - - - 7.6 - - - - - - - - - - 0.2
Peakhurst Golf Club - - - 4.0 - - - - - - - - - - - - - - 1.0 7.0 - - - 1.0 - - - - - - -
Pennant Hills (Yarrara Road) - - - 1.4 - - 2.2 - - - - - 0.2 - 1.6 - - - - 8.8 0.2 - 1.4 - - - 0.2 0.4 - -
Penrith Lakes AWS - - - - - - - - - - - - - - 0.8 - - - 0.4 8.6 - - - 0.2 - - - - 0.2 - -
Prospect Reservoir - - - - - - - - - - - - - - 0.5 - - - - 9.2 0.2 - - - - - - - - - -
Randwick (Randwick St) - - 8.0 1.2 0.6 - 1.2 - 0.4 - - 0.2 4.0 11.2 0.1 - - 1.4 24.8 1.4 0.2 - 1.8 - - - - -

Richmond - UWS Hawkesbury - - - - - - - - - - - - - 2.4 - - - 0.2 - 12.0 - 1.0 - - - 0.2 - -
Richmond RAAF - - 0.2 - - - - - - - - - - - 2.4 - 0.2 - 0.2 10.6 0.2 - 0.2 0.6 0.2 - - - 0.6 - -
Rose Bay (Royal Sydney Golf Club) - - 3.8 1.6 0.3 - 1.0 - 1.2 - - 1.1 2.8 - 3.3 - - - 1.0 24.0 - 0.1 - 2.7 -





Rossmore (South Creek) - - - 1.0 - - - - - - - - - - 1.0 - - - - 8.0 - - - 3.0 - - - - - - -
Sans Souci (Public School) - - - 6.0 - - - - - - - - - - 10.0 - - - - 5.0 - - - 1.0 - - - - - - -
Seven Hills (Radio FM 103.2) 0.5 - - - - - - - - - - - - - 0.5 - - - - 7.0 - - - 0.5 - - - - - - -
Seven Hills (Collins St)


















10.0










Shanes Park (South Creek Road) - - - - - - - - - - - - - - 20.0 - - - 0.2 9.8 0.6 - - 0.6 - - - - 0.2 - 0.2
Springwood (Valley Heights) - - - 0.6 - - - - - - - - - 0.8 14.4 - - - 0.6 12.8 - - - 0.2 - - - - 0.6 - -
St Ives (Richmond Avenue) - - - 1.0 - - 1.2 - - - - - 2.8 - 4.0 - - - - 11.8 - - - 1.0 - - - - 0.2

Sydney (Observatory Hill) - - 1.4 3.8 0.4 - 0.2 - - - - 0.4 3.2 - 5.2 - - - - 14.6 - - - 0.8 - - - - - - -
Sydney Airport AMO - - 0.4 16.4 0.4 - - - - - - - 1.2 0.2 - 0.2 0.2 - - 10.8 0.6 - - 1.0 0.2 - - - - - 0.2
Sydney Botanic Gardens - - 1.5 2.4 0.4 - 0.2 - 0.6 - - - 4.0 - 4.6 - - - 0.4 17.2 - - - 3.0 - - - - - - -
Terrey Hills AWS - - - 8.8 - 0.2 1.0 - - - - - 0.4 - 34.4 - - - 0.4 16.6 - 0.2 - 0.6 - - - - 0.4
-
Turramurra (Kissing Point Road)


1.6

2.6




1.6
2.2


0.2 13.8 0.2

2.0


0.2 0.4
-
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 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 statement has been prepared based on information available at 9 am on Thursday 1 June 2017. 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

Media
(03) 9669 4057
Enquiries