Northern Territory in May 2023

Rainfall

  • May rainfall was below average for most of the Northern Territory, especially in the Lasseter and Tiwi districts where rainfall was very much below average. In contrast, some parts of the Arnhem district received more than twice the May average.
  • May is typically dry in the NT however for the Territory as a whole, May rainfall was 92% below the 1961-1990 average, the 16th driest May on record since 1900.
  • Most of the Territory recorded zero rainfall to monthly totals of 10 mm, although small areas in the far north recorded monthly totals in excess of 25 mm, with Cape Wessel having the highest total of 90.8 mm.

Temperature

Darwin Airport

  • Total rainfall for Darwin Airport was 0 mm, which is 0% of the long-term average of 20.2 mm.
  • The mean daily maximum temperature for Darwin Airport was 32.2 °C, which is 0.1 °C above the long-term average of 32.1 °C.
  • The warmest day was 34.8 °C on the 6th, and the coolest day was on the 21st when the temperature reached 29.2 °C.
  • The mean daily minimum temperature for Darwin Airport was 20.7 °C, which is 1.5 °C below the long-term average of 22.2 °C.
  • The coldest morning was 16.7 °C on the 29th, and the warmest morning was on the 1st when the minimum temperature was 25.4 °C.

Extremes in May 2023
Hottest day 36.3 °C at Mount Bundey North (Defence) on the 5th
36.3 °C at Mount Bundey North (Defence) on the 7th
Warmest days on average 33.3 °C at Oenpelli Airport
Coolest days on average 21.1 °C at Arltunga
Coldest day 16.2 °C at Arltunga on the 27th
Coldest night -1.9 °C at Arltunga on the 24th
Coolest nights on average 3.7 °C at Alice Springs Airport
Warmest nights on average 25.4 °C at Cape Wessel
Warmest night 27.5 °C at Cape Wessel on the 6th
27.5 °C at McCluer Island on the 7th
Warmest on average overall 28.2 °C at CP Dili Airport
Coolest on average overall 12.4 °C at Arltunga
Wettest overall 90.8 mm at Cape Wessel
Wettest day 41.4 mm at Jabiru Airport on the 15th
Strongest wind gust 70 km/h at Cape Wessel on the 7th
70 km/h at McCluer Island on the 8th

Maps
ObservedAnomalyDecile rank
Total
rainfall
Map of Rainfall totals Map of Percentage of normal rainfall Map of Rainfall deciles
Mean
daily
maximum
temperatures
Map of Mean maximum temperature Map of Anomaly in mean maximum temperature Map of Decile rank of mean maximum temperature
Mean
daily
minimum
temperatures
Map of Mean minimum temperature Map of Anomaly in mean minimum temperature Map of Decile rank of mean minimum temperature

Click on a map to show it full size in a pop-up window


Record highest May temperature
New record
(°C)
Old
record
Years of
record
Average for
May
Pirlangimpi Airport 35.9 on the 7th 35.8 on the 17th in 2014 40 32.6



Lowest May mean daily maximum temperature for at least 20 years
Observed
(°C)
Most recent
lower
Average for
May
Elliott 27.4 27.3 in 2000* 31.2
Lajamanu Airport 26.8 26.4 in 2000* 29.8

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




Record lowest May temperature
New record
(°C)
Old
record
Years of
record
Average for
May
Jabiru Airport 13.9 on the 12th = 13.9 on the 23rd in 1972 47 22.0
Elliott 6.2 on the 28th 6.6 on the 26th in 1982 43 16.0
Borroloola Airport 5.3 on the 30th 5.4 on the 28th in 2011 30 15.8
Channel Point 13.5 on the 29th = 13.5 on the 31st in 2002 29 20.6
Rabbit Flat 1.2 on the 29th = 1.2 on the 24th in 2020 27 11.8



Record lowest May mean daily minimum temperature
New record
(°C)
Old
record
Years of
record
Average for
May
Lajamanu Airport 9.6 9.9 in 2011 29 13.8
Rabbit Flat 6.8 8.5 in 2015 26 11.8
Dum In Mirrie Airstrip 18.7 19.7 in 2011 24 21.9
Arltunga 3.9 4.7 in 2008 21 8.2
Bradshaw 14.8 15.0 in 2001 21 18.8

Lowest May mean daily minimum temperature for at least 20 years
Observed
(°C)
Most recent
lower
Average for
May
Alice Springs Airport 3.7 1.4 in 1976 8.2
Elliott 13.3 12.3 in 1982* 16.0
Jervois 7.4 =7.4 in 1991 10.0

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




Record lowest May mean temperature
New record
(°C)
Old
record
Years of
record
Average for
May
Elliott 20.3 21.1 in 2006 42 23.6
Lajamanu Airport 18.2 18.7 in 2011 29 21.8
Arltunga 12.4 13.0 in 2011 21 15.7
Bradshaw 23.1 23.4 in 2011 21 26.4
Walungurru Airport 19.1 19.2 in 2011 21 21.4

Lowest May mean temperature for at least 20 years
Observed
(°C)
Most recent
lower
Average for
May
Alice Springs Airport 12.7 11.7 in 1976 15.7
Douglas River Research Farm 22.7 22.1 in 1974* 25.1

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




Summary statistics for May 2023
Maximum temperatures
(°C)
Minimum temperatures
(°C)
Rainfall
(millimetres)
Mean for
May
2023
Diff
from
average
Highest for
May
2023
Mean for
May
2023
Diff
from
average
Lowest for
May
2023
Total for
May
2023
Average
for
May
Rank of
May
2023
Fraction of
May
average
Darwin-Daly (district 14GA)
Batchelor Airport 31.3 -1.6 34.3 6th 17.4 -1.7 12.4 12th 0 23.6 lowest 0%
Central Arnhem Plateau 29.3 -1.3 32.3 14th 17.3 -2.1 12.5 19th 0 8.5 v low 0%
Charles Point 31.2   34.8 7th 21.5   17.7 31st 0
Darwin Airport 32.2 +0.1 34.8 6th 20.7 -1.5 16.7 29th 0 20.2 lowest 0%
Delamere Weapons Range 30.0 -1.8 34.2 5th 16.4 -1.7 12.2 21st 0 3.8 lowest 0%
Douglas River Research Farm 31.3 -2.1 35.4 6th 14.2 -2.5 10.0 25th 0 9.2 lowest 0%
Dum In Mirrie Airstrip 32.5 +0.1 35.6 6th 18.7 -3.2 13.6 31st 0 21.2 lowest 0%
Jabiru Airport 32.8 -0.8 36.0 5th 21.1 -0.9 13.9 12th 41.6 16.7 high 249%
Kangaroo Flats (Defence) 32.6   35.3 16th 19.3   14.6 29th 0
Knuckey Lagoon 32.6   35.1 7th 18.6   12.4 29th 0
McCluer Island 29.1 -0.4 31.1 17th 24.8 -0.5 22.5 30th 21.2 44.7 average 47%
Middle Point 32.5 -0.9 34.9 6th 16.6 -2.6 11.4 29th 0 17.6 lowest 0%
Mount Bundey North (Defence) 33.2   36.3 7th 19.1   14.6 30th 0
Mount Bundey South (Defence) 33.0   35.8 16th 16.9   10.2 30th 0
Noonamah Airstrip 33.2   35.8 16th 17.4   11.6 12th 0.2 9.4 low 2%
Oenpelli Airport 33.3 -1.2 36.0 16th 21.2 -1.5 14.3 12th 0 14.8 v low 0%
Pirlangimpi Airport 32.9 +0.3 35.9 7th 20.0 -1.5 15.5 22nd 0.8 20.9 low 4%
Point Fawcett 30.6 -1.1 32.9 6th 18.6 -2.6 14.2 30th 0.2 31.2 low 1%
Point Stuart 31.7   35.0 7th 18.7   14.0 12th 0 15.3 lowest 0%
Port Keats Airport 31.4 -1.6 34.6 5th 18.6 -0.8 11.5 30th 0 17.2 lowest 0%
Tindal RAAF 30.9 -1.5 35.0 6th 14.0 -3.4 7.6 22nd 0 2.1 lowest 0%
Arnhem (district 14BC)
Cape Wessel 30.6 -0.5 32.4 1st 25.4 -0.3 24.0 16th 90.8 91.4 average 99%
Gove Airport 29.8   32.0 16th 23.7   20.5 29th 67.2
Groote Eylandt Airport 29.9 -1.1 33.3 5th 18.7 -0.6 11.6 29th 0.6 29.5 v low 2%
Maningrida Airport 31.4 -0.7 34.1 4th 20.3 -1.6 15.0 29th 10.2 22.8 average 45%
Milingimbi Airport 31.7 -0.4 34.3 4th 21.1 -1.4 16.0 28th 13.2 23.2 average 57%
Ngayawili 30.7 -0.5 32.9 4th 22.0 -0.5 16.6 28th 6.6 25.7 average 26%
Warruwi Airport 31.0 +0.2 33.5 4th 23.5 -0.6 20.2 19th 0 15.7 lowest 0%
Roper-Mcarthur (district 14DE)
Borroloola Airport 31.9 -0.6 36.2 5th 12.7 -3.1 5.3 30th 0 7.0 lowest 0%
Bulman 30.7 -1.9 35.0 2nd 16.4 -2.1 8.9 22nd 0 15.3 v low 0%
Centre Island 28.0 -1.5 32.5 6th 20.7 -1.9 16.7 28th 0.2 10.6 low 2%
Daly Waters Airstrip 29.6 -1.8 34.7 5th 13.2 -2.7 7.8 30th 0 6.2 lowest 0%
McArthur River Mine Airport 31.6 -0.8 36.2 5th 14.1 -2.6 5.7 30th 0 6.7 lowest 0%
Ngukurr Airport 32.1 -1.2 36.0 5th 14.7 -3.9 7.3 30th 0 10.0 v low 0%
Victoria (district 14F)
Bradshaw 31.7 -2.2 35.8 6th 14.8 -4.0 8.8 30th 0 11.3 lowest 0%
Bradshaw - Angallari Valley (Defence) 31.3   35.7 6th 16.9   11.6 31st 0
Bradshaw - Koolendong Valley (Defence) 31.3   35.2 5th 11.8   5.6 31st 0
Lajamanu Airport 26.8 -3.0 30.7 15th 9.6 -4.2 4.6 28th 0 7.9 lowest 0%
Victoria River Downs 30.3 -1.8 34.9 6th 11.5 -4.4 5.2 30th 0 5.7 lowest 0%
Barkly (district 15A)
Elliott 27.4 -3.8 32.3 5th 13.3 -2.7 6.2 28th 0 6.3 lowest 0%
Tennant Creek Airport 25.6 -2.1 30.7 15th 13.2 -3.2 8.4 28th 0 7.7 lowest 0%
Alice Springs (district 15B)
Alice Springs Airport 21.6 -1.6 27.0 25th 3.7 -4.5 -0.8 9th 1.4 17.7 average 8%
Arltunga 21.1 -2.1 28.8 4th 3.9 -4.3 -1.9 24th 1.4 18.8 average 7%
Curtin Springs 22.9 -1.0 27.2 25th 6.8 -2.0 2.0 27th 0 17.1 lowest 0%
Jervois 23.4 -2.0 29.0 14th 7.4 -2.6 2.8 28th 0.2 15.6 average 1%
Rabbit Flat 26.8 -2.1 30.6 15th 6.8 -5.0 1.2 29th 0 11.3 lowest 0%
Territory Grape Farm 23.3 -2.4 27.1 5th 7.0 -2.5 2.2 20th 0.6 20.0 average 3%
Walungurru Airport 24.7 -2.7 27.8 15th 13.5 -2.0 7.5 28th 0 15.3 lowest 0%
Watarrka 22.8 -2.1 26.9 15th 7.7 -3.0 0.5 28th 0 19.6 lowest 0%
Yulara Airport 22.9 -1.4 27.0 25th 7.0 -2.4 2.5 28th 0 12.8 lowest 0%
Offshore Islands
CP Dili Airport 31.7   33.0 3rd 24.7   22.5 14th

Notes

The Monthly climate summary, usually published in the first week of the following month, lists the main features of the weather in Northern Territory using the most timely and accurate information available on the date of publication; it will generally not be updated.

This statement has been prepared based on information available at 10 am on Friday 2 June 2023. 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.

Information about Australian Indigenous seasonal calendars is available at the Indigenous Weather Knowledge website.


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