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Northern Territory in September 2025

Rainfall

Temperature

Events

Darwin Airport

  • Total rainfall for Darwin Airport was 9.8 mm, which is 58% of the long-term average of 16.9 mm.
  • The mean daily maximum temperature for Darwin Airport was 33.9 °C, which is 1.2 °C above the long-term average of 32.7 °C.
  • The warmest day was 36.0 °C on the 7th, and the coolest day was on the 4th when the temperature reached 31.1 °C.
  • The mean daily minimum temperature for Darwin Airport was 23.4 °C, which is 0.4 °C above the long-term average of 23.0 °C.
  • The coldest morning was 18.3 °C on the 4th, and the warmest morning was on the 21st when the minimum temperature was 26.3 °C.

Alice Springs Airport

  • Total rainfall for Alice Springs Airport was 25.6 mm, which is 298% of the long-term average of 8.6 mm.
  • The mean daily maximum temperature for Alice Springs Airport was 27.6 °C, which is 0.1 °C above the long-term average of 27.5 °C.
  • The warmest day was 36.4 °C on the 29th, and the coolest day was on the 1st when the temperature reached 19.4 °C.
  • The mean daily minimum temperature for Alice Springs Airport was 8.9 °C, which is 1.4 °C below the long-term average of 10.3 °C.
  • The coldest morning was -0.6 °C on the 1st, and the warmest morning was on the 9th when the minimum temperature was 19.3 °C.

Extremes in September 2025
Hottest day 41.7 °C at Victoria River Downs on the 20th
Warmest days on average 37.5 °C at Bradshaw - Angallari Valley (Defence)
Coolest days on average 27.6 °C at Alice Springs Airport
Coldest day 19.4 °C at Alice Springs Airport on the 1st
Coldest night -0.6 °C at Alice Springs Airport on the 1st
Coolest nights on average 8.9 °C at Alice Springs Airport
Warmest nights on average 25.4 °C at McCluer Island
Warmest night 27.1 °C at Bradshaw - Angallari Valley (Defence) on the 30th
Warmest on average overall 29.7 °C at Bradshaw - Angallari Valley (Defence)
Coolest on average overall 18.2 °C at Alice Springs Airport
Wettest overall 112.2 mm at Geriatric Park
Wettest day 110.0 mm at Geriatric Park on the 12th
Strongest wind gust 80.0 km/h at Alice Springs Airport 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

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Record highest September daily rainfall
New record
(mm)
Old
record
Years of
record
Average for
September
Douglas River Research Farm 61.0 on the 22nd 37.2 on 29 Sep 1986 56 5.6
Geriatric Park 110.0 on the 12th 45.6 on 06 Sep 2010 28 23.2
Bradshaw 21.4 on the 22nd 14.0 on 17 Sep 2024 26 2.9



Record highest September total rainfall
New record
(mm)
Old
record
Years of
record
Average for
September
Douglas River Research Farm 89.6 64.8 in 2016 55 5.6
Geriatric Park 112.2 102.8 in 2010 27 23.2
Bradshaw 35.0 21.8 in 2024 25 2.9



Highest September total rainfall for at least 20 years
Observed
(mm)
Most recent
higher
Average for
September
Hermannsburg 33.2 97.0 in 1975 8.0

note: there may be gaps in the historical record at some sites, so it is possible more recent higher values have gone unreported




Record highest September temperature
New record
(°C)
Old
record
Years of
record
Average for
September
Victoria River Downs 41.7 on the 20th 41.4 on 26 Sep 2022 60 35.8
McArthur River Mine Airport 40.9 on the 29th =40.9 on 21 Sep 2022 47 35.6



Record highest September mean maximum temperature
New record
(°C)
Old
record
Years of
record
Average for
September
Milingimbi Airport 32.8 =32.8 in 2022 23 32.0



Record lowest September temperature
New record
(°C)
Old
record
Years of
record
Average for
September
Elliott 6.7 on the 4th 7.2 on 20 Sep 2001 44 17.6




Summary statistics for September 2025
Maximum temperatures
(°C)
Minimum temperatures
(°C)
Rainfall
(millimetres)
Mean for
September
2025
Diff
from
average
Highest for
September
2025
Mean for
September
2025
Diff
from
average
Lowest for
September
2025
Total for
September
2025
Average
for
September
Rank of
September
2025
Fraction of
September
average
Darwin-Daly (district 14GA)
Batchelor Airport 36.0 -0.1 38.7 29th 20.6 0.0 13.4 4th 33.6 10.6 high 317%
Central Arnhem Plateau 34.0 0.0 37.5 29th 19.7 +0.4 12.3 3rd 3.0 6.0 average 50%
Channel Point 32.0 +0.7 35.2 23rd 21.6 -0.1 15.1 4th 8.9 11.3 average 79%
Charles Point 31.4 +0.3 35.6 23rd 24.1 +0.3 19.3 4th 1.0 29.4 low 3%
Croker Island Airport 32.9 +0.4 34.8 22nd 22.6 -0.5 18.1 4th 4.6 1.7 high 271%
Darwin Airport 33.9 +1.2 36.0 7th 23.4 +0.4 18.3 4th 9.8 16.9 average 58%
Delamere Weapons Range 35.6 -0.2 40.1 20th 20.8 0.0 13.8 4th 3.4 4.0 high 85%
Douglas River Research Farm 36.3 -0.6 39.1 20th 19.0 +0.2 7.9 4th 89.6 5.6 highest 1600%
Dum In Mirrie Airstrip 33.2 +1.1 37.4 23rd 22.4 -0.5 16.9 4th 13.8 18.9 average 73%
East Point 33.2 36.2 23rd 23.7 19.6 4th 23.2
Jabiru Airport 36.6 +0.2 39.7 29th 22.4 +0.7 16.0 3rd 20.0 12.5 high 160%
Kangaroo Flats (Defence) 36.5 40.0 29th 22.1 15.4 4th 4.0
Knuckey Lagoon 34.9 36.6 11th 21.0 15.3 4th 29.4
McCluer Island 29.3 +0.1 31.6 22nd 25.4 +0.5 23.7 1st 0.0 2.1 lowest 0%
Middle Point 36.3 -0.3 38.5 29th 20.3 +1.1 13.4 4th 47.0 16.9 high 278%
Mount Bundey North (Defence) 36.2 39.0 29th 22.7 17.3 4th 12.4
Mount Bundey South (Defence) 36.5 39.3 20th 21.5 14.3 3rd 17.0
Murganella Airstrip 33.4 +0.4 35.5 30th 19.8 +0.1 14.1 3rd 27.0 20.6 high 131%
Noonamah Airstrip 36.3 0.0 38.6 29th 21.7 +0.5 14.9 4th 5.4 25.1 average 22%
Oenpelli Airport 36.5 -0.5 38.9 29th 21.5 +0.8 15.4 3rd 48.0 17.2 high 279%
Pirlangimpi Airport 34.9 +1.4 36.7 24th 21.9 +0.5 18.1 3rd 9.0 28.3 average 32%
Point Stuart 33.7 +0.2 35.7 23rd 22.0 +0.2 15.8 4th 33.2 9.9 high 335%
Port Keats Airport 33.7 +0.1 37.4 24th 21.2 +0.1 12.3 5th 7.6 8.3 average 92%
Tindal RAAF 35.8 -0.2 39.2 29th 20.7 +0.7 11.7 3rd 1.4 8.4 average 17%
Arnhem (district 14BC)
Gove Airport 31.3 34.1 30th 21.5 16.6 3rd 0.6
Groote Eylandt Airport 32.4 -0.2 36.7 30th 19.1 +1.1 10.9 3rd 0.2 7.6 low 3%
Maningrida Airport 33.1 +0.7 36.2 23rd 21.3 +0.7 15.3 3rd 0.0 7.3 lowest 0%
Milingimbi Airport 32.8 +0.8 36.4 23rd 21.5 0.0 16.8 3rd 0.0 7.5 lowest 0%
Ngayawili 32.4 +0.4 34.4 22nd 21.7 +0.9 18.9 3rd 0.4 5.6 average 7%
Warruwi Airport 31.7 +0.7 34.2 22nd 24.2 +0.5 20.4 4th 0.2 2.7 high 7%
Roper-Mcarthur (district 14DE)
Borroloola Airport 35.6 +0.4 39.8 29th 18.6 +1.0 9.9 3rd 0.0 3.4 lowest 0%
Bulman 36.3 -0.1 40.1 30th 18.4 +0.1 10.4 3rd 0.4 12.4 high 3%
Centre Island 30.8 +0.1 33.4 30th 23.0 +0.7 19.3 3rd 0.2 2.0 low 10%
Daly Waters Airstrip 35.2 +0.2 40.0 30th 16.2 -0.6 4.6 3rd 0.2 2.3 average 9%
McArthur River Mine Airport 36.2 +0.6 40.9 29th 18.7 +1.3 9.2 3rd 0.0 4.4 lowest 0%
Ngukurr Airport 36.2 -0.2 41.0 30th 18.6 -0.5 11.7 3rd 0.0 5.7 lowest 0%
Victoria (district 14F)
Bradshaw 37.1 -0.4 40.6 20th 20.7 -1.5 11.1 4th 35.0 2.9 highest 1207%
Bradshaw - Angallari Valley (Defence) 37.5 40.9 20th 21.9 13.3 4th 0.2
Bradshaw - Koolendong Valley (Defence) 36.5 39.6 30th 18.0 7.2 4th 56.2
Lajamanu Airport 34.5 -0.3 40.2 30th 17.2 +0.4 7.9 4th 0.4 5.7 average 7%
Victoria River Downs 36.7 +0.9 41.7 20th 18.5 +0.2 7.9 4th 0.0 4.7 lowest 0%
Barkly (district 15A)
Elliott 34.8 -0.5 40.8 30th 16.9 -0.7 6.7 4th 0.8 5.4 average 15%
Tennant Creek Airport 31.7 -0.1 38.4 30th 18.9 +0.4 10.6 2nd 0.8 8.0 average 10%
Alice Springs (district 15B)
Alice Springs Airport 27.6 +0.1 36.4 29th 8.9 -1.4 -0.6 1st 25.6 8.6 high 298%
Curtin Springs 28.0 0.0 36.5 29th 9.9 -0.3 1.5 1st 0.0 10.4 lowest 0%
Jervois 29.3 -0.5 37.7 29th 11.9 +0.4 2.7 1st 35.4 10.1 high 350%
Rabbit Flat 33.9 -0.6 40.8 30th 11.3 -2.9 2.2 3rd 3.2 6.8 average 47%
Walungurru Airport 31.0 -0.8 37.6 29th 15.7 -1.2 10.1 1st 0.0 8.5 lowest 0%
Watarrka 29.0 -0.5 34.5 28th 10.0 -3.2 3.0 14th 8.2 10.0 average 82%
Yulara Airport 28.6 -0.2 36.4 29th 10.0 -0.9 2.3 2nd 0.8 9.6 average 8%

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 on Wednesday 1 October 2025. 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, excluding the current year. The length of record can vary widely from site to site. Averages are not shown for sites with fewer 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.

Creative Commons By Attribution logo Unless otherwise noted, all maps, graphs and diagrams in this page are licensed under the Creative Commons Attribution 4.0 International Licence

Climate