Adelaide in April 2017: close to average rainfall and slightly warmer than average

Despite a cool end to the month, April 2017 in Adelaide was slightly warmer than average. April rainfall was below average in Adelaide's north but generally above average in southern suburbs and in the hills.

Wetter than average in south and east; drier in the north

  • After a relatively dry start to the month, April rainfall was close to average in most Adelaide suburbs
  • There was heavy rainfall across the city on 20-21 April as tropical moisture extended across the State
  • A series of cold fronts continued to bring rain to Adelaide throughout the last week of the month
  • Some sites such as Mount Crawford and Noarlunga were much wetter than average, with 152% and 150% of their April average rainfall respectively
  • Conditions were drier in Adelaide's north, with Edinburgh RAAF and Parafield Airport recording around half of their April average rainfall

Slightly warmer than average

  • Both daytime and night time temperatures were slightly warmer than average throughout the Adelaide region during April
  • The coldest day of the month in all suburbs was 26 April, with Mt Lofty only reaching 9.9 °C on the day (coldest April day since 25 April, 2015, for the site)
  • Mean maximum temperatures ranged from 0.2 °C warmer than average at Noarlunga to 1.4 °C warmer than average at Parafield Airport
  • Mean minimum temperatures ranged from 0.2 °C warmer than average at Parafield Airport to 1.9 °C warmer than average at Mount Barker
  • April ended with a week of cool daytime temperatures

High humidity at times

  • A large cloudband stretching from the Kimberley into South Australia brought tropical moisture and high humidity to Adelaide from 19 April
  • On 20 April, Adelaide Airport recorded a precipitable water value of 42.1 mm, which was a late-season record for the site by 11 days (that is, 11 days later in the season than a value this high had been recorded before)

Further information

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Extremes in April 2017
Hottest day 32.7 °C at Edinburgh RAAF on the 19th
Warmest days on average 24.1 °C at Parafield Airport
Coolest days on average 17.8 °C at Mount Lofty
Coldest day 9.9 °C at Mount Lofty on the 26th
Coldest night 4.2 °C at Mount Lofty on the 26th
Coolest nights on average 10.2 °C at Mount Lofty
Warmest nights on average 14.1 °C at Noarlunga
Warmest night 22.6 °C at Adelaide (Kent Town) on the 19th
Warmest on average overall 18.3 °C at Adelaide (Kent Town)
Coolest on average overall 14.0 °C at Mount Lofty
Wettest overall 84.8 mm at Williamstown
Driest overall 15.2 mm at Edinburgh RAAF
Wettest day 48.2 mm at Williamstown on the 21st
Strongest wind gust 76 km/h at Mount Crawford AWS on the 9th

Summary statistics for April 2017
Maximum temperatures
(°C)
Minimum temperatures
(°C)
Rainfall
(millimetres)
Mean for
April
2017
Diff
from
average
Highest for
April
2017
Mean for
April
2017
Diff
from
average
Lowest for
April
2017
Total for
April
2017
Average
for
April
Rank of
April
2017
Fraction of
April
average
Adelaide (Kent Town) 23.3 +0.6 30.8 19th 13.3 +0.9 9.4 15th 33.2 39.4 average 84%
Adelaide Airport 22.8 +0.6 31.1 19th 13.1 +1.3 8.2 11th 25.2 34.7 average 73%
Edinburgh RAAF 23.8 +0.8 32.7 19th 12.1 +0.4 6.5 4th 15.2 30.6 low 50%
Kuitpo Forest Reserve 20.2 +0.6 29.1 19th 11.7 +0.5 6.5 26th 68.4 58.6 average 117%
Mount Barker 21.6 +1.1 28.9 7th 10.3 +1.9 5.7 3rd 58.6 58.1 average 101%
Mount Crawford AWS 19.8 +0.7 27.3 19th 11.0 +0.6 5.1 3rd 68.0 44.7 high 152%
Mount Lofty 17.8 +2.2 25.2 19th 10.2 +0.5 4.2 26th 60.6
Noarlunga 22.5 +0.2 31.2 19th 14.1 +0.5 8.6 3rd 50.0 33.4 high 150%
Parafield Airport 24.1 +1.4 31.7 19th 12.0 +0.2 6.6 15th 22.2 38.6 average 58%

Daily maximum temperatures for April 2017
123456789101112131415161718192021222324252627282930
Adelaide (Kent Town)21.621.021.826.928.929.430.229.117.518.920.824.226.023.526.023.927.829.230.821.422.624.124.620.421.015.818.017.417.619.7
Adelaide Airport21.521.321.923.428.228.629.728.617.919.221.121.424.021.922.723.325.330.031.122.021.822.523.620.420.917.118.418.118.719.0
Edinburgh RAAF21.721.322.227.228.428.730.331.318.318.921.124.525.723.925.723.827.629.132.722.822.524.425.321.221.517.218.419.217.420.5
Kuitpo Forest Reserve17.217.018.224.325.425.927.226.714.914.416.422.023.122.223.718.226.226.029.118.319.720.420.817.617.512.613.515.715.415.8
Mount Barker19.018.418.825.025.728.028.928.716.715.718.322.925.723.225.020.125.325.028.820.023.121.922.019.020.014.316.018.616.418.0
Mount Crawford AWS18.117.517.924.724.725.926.627.113.714.517.022.123.222.623.219.024.924.727.317.719.020.421.516.716.411.612.813.113.316.4
Mount Lofty16.015.216.622.623.623.724.023.312.312.214.719.320.419.720.219.122.923.925.216.417.118.218.915.114.79.911.311.611.713.4
Noarlunga21.720.719.924.827.928.429.126.518.017.920.921.824.123.123.022.125.029.631.220.521.023.925.420.419.815.917.318.617.618.7
Parafield Airport22.621.922.527.429.429.331.030.118.719.321.524.526.424.626.524.728.129.931.722.823.324.925.721.522.117.319.517.818.020.1
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 April 2017
123456789101112131415161718192021222324252627282930
Adelaide (Kent Town)11.411.610.59.816.111.414.914.413.311.79.910.910.49.69.413.714.019.622.619.118.211.415.615.415.210.29.612.013.514.6
Adelaide Airport13.412.910.38.814.210.716.214.314.112.28.29.18.99.18.814.611.917.421.019.218.310.614.015.116.711.49.612.613.715.1
Edinburgh RAAF9.911.910.96.513.09.512.214.412.910.48.68.98.47.08.811.712.415.521.917.418.211.114.514.515.810.37.012.113.314.5
Kuitpo Forest Reserve11.19.46.89.913.714.214.815.99.08.210.19.312.311.010.211.511.615.116.617.215.510.513.613.012.06.57.79.611.012.3
Mount Barker9.110.75.75.810.39.212.311.18.88.510.46.67.58.36.010.69.312.118.117.716.08.213.013.412.76.57.68.911.512.8
Mount Crawford AWS9.68.65.19.813.814.717.416.38.07.58.68.311.79.59.910.99.913.916.416.015.111.311.713.011.85.36.58.69.710.2
Mount Lofty9.27.34.68.112.415.016.317.06.36.68.38.210.89.49.19.19.714.716.615.213.410.111.011.810.84.25.87.88.79.8
Noarlunga12.811.98.613.215.913.220.016.413.111.811.112.412.713.611.313.814.817.221.019.117.812.416.315.215.910.410.212.413.515.0
Parafield Airport9.99.69.07.013.59.112.312.013.310.38.38.48.27.76.610.815.019.021.916.818.010.216.714.216.110.26.712.013.414.8
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 April 2017
123456789101112131415161718192021222324252627282930
Adelaide (Brighton) - - - - - - - 3.8 -
Adelaide (Hope Valley Reservoir) - - - - - - - - 4.2 1.2 - - - - - - - - - 1.2 5.2 - - 2.0 6.2 5.4 0.2 3.0 4.8
Adelaide (Kent Town) 0.2 - - - - - - - 2.6 0.8 - - - - - - - - - 0.4 4.8 0.2 - 3.4 8.2 6.0 - 3.8 2.8 -
Adelaide (Keswick) 0.2 - - - - - - - 4.0 0.6 - 0.2 - - - - - - - 1.6 12.4 - - 3.4 3.6 6.6 - 3.6 3.4 -
Adelaide (Morphett Vale)


















2.6 22.0



13.0



Adelaide (Salisbury Bowling Club)







6.2








2.8









Adelaide (Seaton)







1.8









2.6


4.2 3.6 3.4
7.6

Adelaide Airport - - - - - - - - 4.4 0.8 - - - - - - - - - 0.8 4.4 - - 3.0 0.6 4.4 0.2 5.2 1.4 -
Ashton 0.2 - 0.2 0.2 - - - - 8.8 1.2 2.0 - - 0.2 - - - - - 10.0 17.0 0.2 - 3.6 8.8 14.6 0.8 1.0 2.4 -
Athelstone (Black Hill) 0.2 - - - - - - - 3.8 1.0 - - - - - - - - - 2.6 7.4 - - 2.4 8.2 6.6 - 4.4 2.0 -
Balhannah (Killara Park) - 0.2 - - 0.2 - - - 7.8 1.0 2.6 - 0.2 0.2 - 0.2 - - - 2.8 14.8 0.2 0.2 3.6 6.0 15.2 0.8 1.0 0.4 -
Beaumont - - - - - - - - 4.0 - - - - - - - - - - 0.4 4.8 0.2 - 3.0 6.2 3.2 0.2 1.8 1.6 0.2
Belair - - - - - - - - 6.0 1.0 0.6 - 0.2 - - - - - - 2.2 19.4 - 0.2 2.2 6.4 8.6 0.2 0.8 1.2 -
Belair (St Johns) 0.2 - - - - - - - 4.6 0.4 0.4 - - - - - - - - 3.8 18.4 - - 3.4 5.6 8.8 - 2.0 2.8 -
Bellevue Heights 0.2 0.2 - - - - - - 4.4 0.6 0.4 0.2 - - - - - - - 1.8 17.6 0.2 - 4.2 0.2 12.2 0.2 1.2 1.2 -
Birdwood (McVittie's Hill) - - - - - - - - 3.2 0.2 1.6 - - - - - - - - 2.6 14.4 0.2 - 6.2 5.4 5.0 0.6 - 1.4 -
Blackwood (Wittunga) 0.8






5.2 0.6







0.4 5.2 18.2 0.2
3.6 2.4 10.0



Brownhill Creek (Scotch College) 0.4 - - - - - - - 4.8 0.6 - - - - - - - - - 2.2 15.8 - - 3.4 6.0 4.4 - 1.8 1.6 -
Burnside - - - - - - - - 4.2 0.8 - - - - - - - - - 0.4 5.4 0.2 - 3.4 7.8 4.8 - 2.8 1.4 -
Charleston - - - - - - - - - - - - - - - - - - - - 14.8 - - 1.8 2.4 4.4 0.6 - 0.6 -
Crafers West 0.2 - 0.2 - - - - - 8.2 1.6 1.0 - 0.2 - - - - - - 4.8 11.0 - - 4.4 12.4 10.6 1.2 0.6 2.0 -
Cudlee Creek (Millbrook Reservoir) - - - - - - - - 6.8 1.2 0.8 - - - - - - - 0.2 5.6 25.2 - - 6.0 5.6 8.2 0.6 1.4 2.6 0.2
Cudlee Creek (O'Deas Road) - - - - - - - - 6.4 0.2 2.0 0.2 - - - - - - - 6.8 25.6 - - 3.2 3.6 13.6 0.8 0.2 2.4 -
Edinburgh RAAF 0.4 0.2 - - - - - - 2.8 1.4 - - - - - - - - - - 2.2 - - 0.2 1.8 2.2 - 3.8 0.2 -
Felixstow (Payneham) - - - - - - - - 1.6 0.6 - - - - - - - - - 0.6 3.8 0.2 0.2 2.6 6.2 3.8 - 3.6 2.4 -
Gawler - - - - - - - - 4.2 1.2 0.2 - - - - - - - - 2.6 28.0 0.2 - 5.8 2.2 2.6 - 3.2 - -
Greenacres 0.2 - - - - - - - 2.6 1.2 - - - - - - - - - 0.8 5.0 - - 1.4 3.6 6.8 0.2 4.2 2.0 -
Hahndorf 0.2 - - - - - - - 8.7 1.0 1.8 - - - - - - - - 3.0 14.6 0.2 - 3.6 5.2 19.1 1.6 0.8 0.8 -
Happy Valley Reservoir







5.2 1.0 0.4








19.6

6.4 0.8 13.4
1.4 1.6
Heathfield Works Depot - - - - - - - 9.5 2.2 - - - - - - - 21.8 29.2 2.0

Ironstone Road - - - - - - - - 7.2 1.0 1.6 0.2 - - - - - - 0.4 8.6 25.4 - - 4.8 7.6 7.2 0.4 0.6 2.2 -
Kangarilla (Saddlebags) 0.2 - 0.2 - 0.2 - - - 9.4 0.2 2.0 0.2 - 0.2 0.2 - - - 0.2 2.4 31.8 0.2 - 4.0 2.6 15.8 0.2 1.6 0.4 -
Kersbrook - - - - - - - - 7.2 0.6 1.8 0.2 - - - - - - - 5.2 23.2 - - 3.0 6.8 5.2 0.2 1.4 2.2 -
Kilburn - - - - - - - - 2.6 1.0 - - - - - - - - - 0.6 2.8 - - 2.2 2.6 2.0 - 5.8 2.2 -
Kuitpo Forest Reserve -
- 0.4 - -
- 2.4 0.8 1.4 - 0.2 0.2 - 0.2 - - 0.4 6.0 36.2 0.4 - 3.0 1.2 14.6 0.2 0.6 0.2 -
Leawood Gardens (Eagle on The Hill) - - - - - - - - 5.2 0.4 0.8 - - - - - - - - 3.0 7.8 - - 3.6 11.0 9.8 - 1.0 1.8 0.2
Lenswood Research Centre - - - - - - - 9.2 1.4 - - - - - - - - 12.6 20.4 3.6 16.6 1.4


Lobethal








9.6 2.7






0.3 8.8 15.6 3.4 10.0 1.1

Lobethal - - - - 0.2 - - - 7.6 1.4 2.6 - - - - - - - 0.2 5.8 16.4 0.2 0.2 2.8 3.2 6.6 1.2 - 0.8 -
Lobethal (Maidment Road) - - - - - - - - 6.4 1.0 2.0 - - - - - - - - 4.6 25.6 - - 3.4 4.4 8.4 0.8 - 2.0 -
Long Ridge (Greenhill) - - - - - - - - 5.4 0.2 0.4 - - - - - - - - 2.0 5.2 - - 3.8 6.0 7.8 0.2 1.6 1.6 -
Mallala






6.4







4.6


7.8



McLaren Vale (Pirramimma Winery) - - - - - - - 2.2 0.4 - - - - - - - 0.2 9.0 13.6 14.2 - 15.6 - 0.4

Melrose Park - - - - - - - - 3.2 0.8 0.2 - - - - - - - - 1.6 11.6 - - 3.8 3.6 3.4 - 1.8 1.6 -
Mitchell Park (Marion) 0.2 - - - - - - - 3.6 1.8 - 0.2 - - - - - - - 1.8 8.8 - - 5.2 0.2 5.4 - 2.8 1.6 -
Montacute - - - - - - - - 5.2 1.2 - - 0.2 - - - - - - 25.6 16.6 - 0.2 1.6 7.2 6.6 0.2 2.2 2.2 -
Morphettville - - - - - - - - 1.4 - - - - - - - - - - 0.4 5.2 - - 1.8 0.2 2.0 - 4.6 1.2 -
Mount Barker - - - - - - - - 7.8 0.2 2.0 - - - 0.2 - - - - 1.4 19.6 0.2 - 6.8 6.0 11.8 1.6 0.6 0.4 -
Mount Bold Reservoir
0.2





10.0 0.6 1.4






0.2
31.0

4.0 0.8 17.0 0.6 1.6 0.4
Mount Crawford AWS - - - - - - - - 6.4 1.0 1.6 0.4 - - - - - - 0.2 10.0 24.2 0.2 0.2 5.2 4.6 6.0 0.2 2.4 5.4 -
Mount Lofty - 0.4 - - - - - - 7.4 1.6 2.4 - - - - - - - - 3.8 11.8 - - 4.4 14.4 10.2 1.0 0.8 2.4 -
Mt Bold (Scott Creek) 0.2 - - - - - - - 7.0 0.2 1.2 - - - 0.2 - - - 0.2 1.4 23.0 0.2 - 3.8 1.8 10.2 0.6 0.8 0.6 -
Mylor (Biggs Flat) - - - - - - - - 8.4 0.2 0.8 - - - - - - - - 1.8 11.2 - - 3.0 4.0 13.2 0.8 0.6 0.4 -
Nairne - 1.2 - - - - - 7.6 4.0 - - - - - - - - 4.6 13.8 - 5.0 12.8 3.0


Noarlunga - - - - - - - - 0.8 0.2 - - 0.2 - - - - - - 5.4 15.4 - - 11.8 2.8 12.0 0.2 1.0 0.2 -
North Adelaide - - - - - - - 3.0 - - - - - - - - - 0.6 6.5 - - 12.6 0.2 4.8

Owen



















6.6 3.0 7.6



Parafield Airport - 0.2 - - - - - - 3.8 1.6 - - - - - - - - - 3.2 1.4 - - 1.6 1.2 3.2 - 5.4 0.6 -
Piccadilly (Woodhouse) - - - - - - - - 9.4 1.8 1.2 - - - - - - - - 1.7 19.4 0.2 - 4.0 11.8 13.2 1.0 - 2.0
Regency Park - - - - - - - - 1.8 0.6 - - - - - - - - - 0.6 4.4 - - 3.8 7.8 1.2 - 7.0 2.0 0.2
Sellicks Beach








0.8








12.4


9.0
7.2
0.8

Uraidla







10.8 1.0 2.2







9.0 21.8

3.4 18.0 14.2 1.6


Uraidla (Sutton Creek) - 0.2 - - - - - - 7.0 0.4 1.2 - 0.2 - - - - - - 5.8 17.2 0.2 0.2 4.0 14.6 7.6 0.8 0.2 0.8 -
Verdun 0.2 - - - - - - - 8.2 0.8 1.6 0.2 - - - - - - - 3.4 14.4 - - 2.8 7.2 10.0 1.6 0.2 1.2 -
Williamstown - - - - - - - - 8.0 0.4 - - - - - - - - 0.6 4.4 48.2 - - 3.4 8.2 5.8 - 3.6 2.2
Williamstown (South Para Reservoir) - - - - - - - - 7.4 0.4 0.4 - - - - - - - 0.4 8.0 20.6 0.4 - 5.2 3.4 6.6 0.2 2.2 3.2
Willunga - - - - - - - 1.5 2.0 - - - - - - - - 14.0 17.4 16.0 12.6 - 1.4

Woodside






6.0 3.2







3.4 18.6 4.0 10.4 2.2


Woodside (Wicks Estate) - - - 0.2 - - - - 5.2 0.2 2.0 - - - - - - - - 5.4 10.0 - 0.2 3.4 6.6 4.4 0.8 0.2 0.8 -
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 Adelaide 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 10 am on Monday 1 May 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