Northern Territory in 2013: Warmest year on record

  • Temperatures (NT area averages):
    • Maximum (daytime) is 1.56 °C above average and highest on record
    • Mean is 1.33 °C above average and the highest on record
    • Minimum (overnight) is 1.11 °C above average, third highest on record and highest since 2005
  • Rainfall:
    • Very dry start to the year
    • Wetter than average end to the year
    • Overall, near average rainfall for the NT in 2013
  • Extremes:
    • Hottest day was 46.7 °C at Walungurru on 9 January and at Rabbit Flat on 25 January
    • Coldest night was -3.4 °C at Arltunga on 22 June
    • Highest daily rainfall was 262.1 mm at Mataranka Airstrip on 29 March

North Australian Monsoon activity in 2013

In the 2012-13 wet season, the monsoon did not arrive at Darwin until late January (on average, the onset of the North Australian Monsoon in the Top End occurs around the last week of December). On the 15th of January, a surface based low pressure system formed over central Queensland and began moving to the northwest in the ensuing days. At the middle levels of the atmosphere the monsoon trough began shifting south to meet the surface low. This caused the onset of the North Australian Monsoon over Darwin and most of the Top End around the 18th of January; about three weeks later than usual.

However, this first monsoon burst was quite brief across the Top End. By 19 January, two low pressure systems had formed within the monsoon trough, one over eastern Australia that would eventually become tropical cyclone Oswald and the other over northwestern Australia that would eventually become tropical cyclone Peta. With these two tropical systems on either side of the Northern Territory during the last week of January, the Top End experienced a lull in monsoon activity (scant rainfall and high temperatures) despite being under the influence of the monsoon trough.

In the 2013-14 wet season, unlike the prior wet season, monsoonal activity came early to the Top End in November 2013. The monsoon trough moved over the continent from around the 19th through to the end of the month. Many locations experienced monsoonal conditions including thick cloud cover and heavy rainfall during this period. Darwin Airport experienced heavy rainfall and sustained westerly winds on the 22nd and 23rd, coinciding with the monsoon onset there. Rainfall continued through the end of the month over the Roper McArthur and Barkly Districts associated with ex-tropical cyclone Alessia.

One tropical cyclone for the NT in 2013, Alessia

Following the early monsoon onset, one tropical cyclone made landfall on the Northern Territory in 2013. Beginning as a tropical low near Java on 20 November, tropical cyclone Alessia officially reached tropical cyclone strength on the 22nd off Australia's northwest shelf. The storm skirted the Kimberley coastline and made landfall on the western Top End on the 24th as a weak category 1 system. After making landfall, Alessia weakened to a tropical low and moved across the Top End, producing heavy rainfall across the region. Ex-tropical cyclone Alessia thenre-intensified over the warm waters of the Gulf of Carpentaria on the 26th and 27th. The strongest wind gust recorded in the NT this year was at Centre Island with 109 km/h on 27 November as tropical cyclone Alessia passed over the island. Alessia made landfall again about 70 km west of the NT/Queensland border, and remained in the region as a tropical low until the end of the month.

Rainfall: A dry start to the year, but a wet finish

As the year began, the Northern Territory was experiencing one of the driest starts to any wet season on record. When averaged across the NT, January 2013 was the driest January since 1994. February also saw unseasonably dry conditions with only 44% of normal rainfall for the month. March and April finally saw some wet weather, especially over the Easter long weekend (29 March to 2 April) as a low pressure system moved along the north coast. While some sites had their highest daily rainfall on recordover the Easter weekend, this rainfall was just barely enough to prevent most coastal locations from seeing their driest wet season on record. Most places ended the wet season with very much below average rainfall.

The 2013/14 wet season started slowly for most of the NT. October and early November saw a few thunderstorms over the western Top End, but the rest of the Territory missed out. This dry spell ended as the monsoon trough formed over the Top End much earlier than usual. Rainfall associated with ex-tropical cyclone Alessia during the last week of November over the Barkly and Roper-McArthur districts resulted in at least 31 Top End locations experiencing their wettest November on record. There was a break in the monsoon in the first half of December, but it returned during the last week of the year.

The wettest overall in the NT for 2013 was Pirlangimpi with 1997.6 mm, whilst the driest overall was Jervois with 98.8 mm—a new record low for this site. The wettest single day was at Mataranka Airstrip with 262.1 mm on in the 24 hours to 9 am on 29 March.

Temperature: Warmest year on record

2013 was the hottest year on record for the Northern Territory in terms of both maximum and mean temperature, and the third-highest for minimum temperature. The mean temperature (average of the daily maximum and minimum) for the NT was 26.50 °C which is 1.33 °C above the 1961-90 average and 0.07 °C above the previous record of 26.43 °C set in 1998. Bradshaw had the highest annual mean temperature in the NT this year with 29.5 °C; the coolest was Arltunga with 22.0 °C.

Maximum temperature

The NT's mean maximum temperature for the year was 33.45 °C, which is 1.56 °C above average and the highest on record (previous highest was 33.13 °C in 2005). High maximum temperatures were present throughout the year, especially at Alice Springs Airport, which set new maximum temperature records for the months of January and September, the entire winter season (June-August), the entire northern dry season (May-September) and also saw their hottest calendar year (highest annual mean maximum temperature). Several other sites had highest annual maximum temperature on record,including Tennant Creek Airport, Victoria River Downs, Gove Airport, Tindal RAAF, and Yulara Aero. Rabbit Flat and Mango Farm were among the sites that set their highest daily temperature on record during the year. There were no low maximum temperature records set for the year.

Significant heatwaves

The year began with several maximum temperature records and record hot spells being set in January 2013. A heatwave early in January was exceptional in its extent and duration, affecting most of Australia. From the 1st to the 17th inclusive, daytime temperatures at the Alice Springs Airport rose over the 40 °C mark, surpassing the previous record spell of 12 days over 40 °C set in 2006. Although Alice Springs failed to break the record of the hottest January day (set in 1960 with 45.2 °C), it did break the January mean maximum temperature record with 40.1 °C. This is 0.1 degrees warmer than the previous record of 40.0 °C set in January 2006. To the south of Alice Springs, Yulara Aero surpassed the 44.0 °C mark 10 days in a row (4 to 13 January, inclusive), exceeding their previous record streak of four days above 44.0 °C, set in 1998. It was in the midst of these excessive heat spells that Walungurru hit 46.7 °C on 9 January, and Rabbit Flat also had a maximum temperature of 46.7 °C on 25 January; this was the highest temperature reached in the Territory during 2013.

Another significant heat wave occurred in September when Alice Springs Airport saw 15 consecutive days above 30 °C. This was the longest heat spell of this magnitude for any September on record at Alice Springs Airport, and marks the earliest springtime dates that such temperatures were recorded at Alice Springs. Alice Springs Airport had 9 days above 35 °C in September, equaling the record from 2003.

Minimum temperature

The NT's mean minimum (overnight) temperature for the year was 19.56 °C, which is 1.11 °C above average, the third-highest on record. Batchelor Aero and Groote Eylandt Airport were among the sites to see their warmest night (highest daily minimum temperature) on record, and  Kulgera had its highest annual minimum temperature on record.

The coolest nights on average were at Alice Springs Airport with 14.0 °C. Arltunga saw the coldest nights in the Territory, with -2.7 °C on 21 June and then its coldest night-time temperature of -3.4 °C on 22 June, followed by -2.8 °C on 23 June.

Cape Don had the warmest nights on average this year with a 25.8 °C mean overnight temperature. The warmest night was at Walungurru with 32.8 °C on 22 January.

Darwin region annual summary

2013 saw the third-highest mean annual maximum temperature at Darwin Airport, with 32.7 °C. This was the hottest year since 2005. Minimum temperatures were also very much above average this year, with a mean annual minimum temperature of 23.5 °C, 0.3 °C above average.

During the dry season (May to September) the number of nights below 20 °C at Darwin Airport provides a good indicator of human comfort level and also has some horticultural significance. The minimum temperature at Darwin Airport dropped below 20 °C only 38 times during 2013’s dry season, well down on the long-term average of 51 such nights and a stark difference to the last two years (there were 94 nights below 20 °C in 2011 and 86 nights in 2012). Darwin had experienced only four nights below 20 °C in June this year. There was a run of 20 nights below 20 °C between 24 July and 13 August. 2 September was the last night this season to see the temperature drop below 20 °C.

Darwin Airport had 1758.0 mm of rain for the year, which is near the long-term average (1729.7 mm). After a much drier than average January, Darwin Airport saw near average rainfall throughout the rest of the year. An early monsoon onset in November made up for most of the rainfall deficit that had been lingering since January. The wettest single day this year at Darwin was 5 November, as a band of thunderstorms moved over the city setting several November daily rainfall records. Darwin Airport had 105.0 mm, Darwin Botanic Gardens had 158.8 mm, Nightcliff Pool had 82.6 mm and Palmerston had 78.2 mm.

Further information

Media
(03) 9669 4057
Enquiries

Extremes in 2013
Hottest day 46.7 °C at Walungurru on 9 Jan
46.7 °C at Rabbit Flat on 25 Jan
Warmest days on average 36.4 °C at Bradshaw
Coolest days on average29.6 °C at Kulgera
Coldest day 9.8 °C at Kulgera on 19 Jun
9.8 °C at Kulgera on 9 Jul
Coldest night -3.4 °C at Arltunga on 22 Jun
Coolest nights on average 14.0 °C at Alice Springs Airport
Warmest nights on average 25.8 °C at McCluer Island
Warmest night 32.8 °C at Walungurru on 22 Jan
Warmest on average overall 29.5 °C at Bradshaw
Coolest on average overall 22.0 °C at Arltunga
Wettest overall1997.6 mm at Pirlangimpi
Driest overall 95.8 mm at Jervois
Wettest day 262.1 mm at Mataranka Airstrip on 29 Mar
Highest wind gust 109 km/h at Centre Island on 27 Nov


Month by month

January: Hottest January on record sets the pace for the rest of the year

  • January average maximum temperature is highest on record for the NT
  • Alice Springs swelters with 17 consecutive days above 40 °C
  • Yulara had 10 consecutive days above 44 °C
  • Territory sees very little rainfall and driest January since 1994
    • The tropics saw very little monsoon activity
    • Only weak frontal systems crossed the southern NT
Map of decile rank of rainfall Map of Decile rank of mean maximum temperature Map of Decile rank of mean minimum temperature
Rainfall rank Maximum temperature rank Minimum temperature rank

February: Cooler than January but still hot and dry throughout

  • Storms brings wettest month to Darwin since March 2012. The rest of the NT was unseasonably dry.
  • Coolest month since August 2012 for Darwin
  • 3rd hottest summer for Alice Springs
Map of decile rank of rainfall Map of Decile rank of mean maximum temperature Map of Decile rank of mean minimum temperature

March: Wet weather finally arrives in the Top End

  • Last half of March, wet, monsoonal weather finally arrived in the Northern Territory and increased rainfall totals
  • The passage of a westward moving tropical wave during the last week of March revived the monsoon trough.
  • A slow-moving, weak tropical low formed within the monsoon trough and moved along the north coast
  • Most of the March rainfall occurred over the Easter weekend.

.

Map of decile rank of rainfall Map of Decile rank of mean maximum temperature Map of Decile rank of mean minimum temperature

April: Hardly any rain to end up the Wet Season.

  • An active monsoon brings rain during the Easter weekend
  • Temperature at Darwin Airport drops below 20 °C for the first time in 2013
  • Last hot spell for the Alice before winter
Map of decile rank of rainfall Map of Decile rank of mean maximum temperature Map of Decile rank of mean minimum temperature

May: A hot start precedes a wet finish for the 2012-13 wet season

  • Northwest Top End swelters in the warmest start to May on record
  • SSTs remain warm off the northwest coast (part of a negative Indian Ocean Dipole), with four cloud band events and considerable rain for Alice Springs District
  • Late May record rainfalls in western Top End
  • Batchelor Aero sees 101.4 mm on the 24th; their highest May daily rainfall on record
Map of decile rank of rainfall Map of Decile rank of mean maximum temperature Map of Decile rank of mean minimum temperature

June: Dry season pattern in place, but warm nights linger across the Top End

  • June in the NT showed marked signs that the dry season is in full swing
  • Forty-two stations with more than ten years of records measured 0.0 mm of rainfall for the month.
  • Although totals were small, Adelaide River Town saw its highest total June rainfall on record when 1 mm of rain fell on the 20th
  • Dry season temperatures have been warmer than average; Darwin Airport saw only 2 nights this month with a minimum temperature below 20 °C.
Map of decile rank of rainfall Map of Decile rank of mean maximum temperature Map of Decile rank of mean minimum temperature

July: Warmer than average temperatures increase bushfire danger for the NT

  • Above average temperatures for all of NT
  • Tennant Creek sees warmest July in 38 years
  • Gove Airport, third warmest July and hottest year to date
  • Cloudband brings rain to Alice Springs
Map of decile rank of rainfall Map of Decile rank of mean maximum temperature Map of Decile rank of mean minimum temperature

August: NT sees 4th hottest August on record

  • 6 new daily maximum temperature records
  • Maximum (daytime) - 4th warmest on record
  • Most of the NT sees very much above average temperatures
  • Record setting rainfall event over northwest Top End on the 23rd
  • Hottest day was 39.7 °C at Timber Creek on the 20th; a new August daily maximum temperature record for anywhere in the NT
  • Coldest night was -1.6 °C at Arltunga on the 4th
Map of decile rank of rainfall Map of Decile rank of mean maximum temperature Map of Decile rank of mean minimum temperature

September: Hottest September on record

  • Northern Territory
    • Highest September mean daily maximum temperature
    • Highest September mean daily temperature
    • Second highest mean daily minimum temperature
  • Alice Springs Airport sees hottest September on record
Map of decile rank of rainfall Map of Decile rank of mean maximum temperature Map of Decile rank of mean minimum temperature

October: Alice Springs and the Red Centre continued to heat up while the "build-up" brings thunderstorms to the Top End

  • Alice Springs Airport sees hottest October day on record with 42.6 °C on the 10th
  • Record setting rainfall event over northwest Top End on the 23rd
    • 2 daily rainfall records set and 3 monthly total rainfall records set
    • Geriatric Park (near Dundee Downs) sees triple their October average rainfall
    Map of decile rank of rainfall Map of Decile rank of mean maximum temperature Map of Decile rank of mean minimum temperature

    November: Record setting rainfall event over Top End on the 5th and then early monsoon onset over the Top End from 24-28; most of the NT experienced a very wet November

    • Tropical cyclone Alessia on the 24th
    • 24 new November daily rainfall records
      • Darwin Airport sees their wettest November day on record (104.8 mm on 5 Nov)
      • Wettest day in the NT was 183.8 mm at Gunn Point on the 24th
    • 31 new November total rainfall records (of sites with over 10 years of record)
    • 5 sites see coolest November day on record associated with thick monsoonal cloud cover and rain
    • Temperatures still high around Alice Springs
    Map of decile rank of rainfall Map of Decile rank of mean maximum temperature Map of Decile rank of mean minimum temperature

    December: Year ends with average to below average temperatures for much of the NT

    • Month ends with 4 consecutive days above 40 at Alice Springs
    • Northwest coast sees one last monsoon burst for the year
    • Most of Top End sees low rainfall totals for December
    Map of decile rank of rainfall Map of Decile rank of mean maximum temperature Map of Decile rank of mean minimum temperature
    Rainfall rank Maximum temperature rank Minimum temperature rank
    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 daily rainfall
    Highest daily rainfall
    in 2013 (mm)
    Previous annual
    wettest
    Years of
    record
    Dorisvale 226.0 on 30 Mar 201.0 on 2 Mar 2000 30
    Mataranka Airstrip 262.1 on 29 Mar 179.0 on 26 Jan 1998 27
    Walker Creek 197.4 on 4 Mar 178.8 on 19 Feb 2008 21
    Upper Waterhouse River 182.4 on 31 Mar 136.6 on 5 Apr 2006 15
    Beswick Bridge 187.0 on 29 Mar 130.5 on 14 Feb 2002 12
    Warlock Ponds 154.5 on 29 Mar 144.5 on 6 Apr 2006 12
    Cave Creek Station 202.0 on 29 Mar 135.0 on 30 Oct 2010 11
    Coodardie 201.0 on 29 Mar 138.0 on 24 Dec 2008 11



    Highest total annual rainfall for at least 10 years
    Total rainfall
    for 2013 (mm)
    Most recent annual
    at least this wet
    Years since
    wetter
    Annual
    average
    Cape Don 1643.4 2043.6 in 1995* 15 1277.2

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




    Record lowest total annual rainfall
    Total rainfall
    for 2013 (mm)
    Previous annual
    driest
    Years of
    record
    Annual
    average
    Jervois 95.8 97.8 in 2009 46 291.3

    Lowest total annual rainfall for at least 10 years
    Total rainfall
    for 2013 (mm)
    Most recent annual
    at least this dry
    Years since
    drier
    Annual
    average
    Brunette Downs 210.4 190.2 in 1992 21 415.0
    Gorrie 582.4 509.0 in 1992* 19 899.8
    Wollogorang 505.5 449.1 in 1994* 17 945.3
    Douglas River 1023.2 1009.8 in 1986* 16 1245.2
    The Garden 142.1 131.7 in 1996* 15 321.6
    Point Fawcett 856.6 494.6 in 1996* 14 1497.8
    Daly Waters AWS 569.4 453.4 in 2002 11 660.4
    Katherine Aviation Museum 959.7 862.8 in 2002 11 1136.6
    Wave Hill 428.3 343.3 in 2002 11 694.8
    Dum In Mirrie AWS 1213.2 1136.2 in 2002* 10 1750.2

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




    Record highest temperature
    Highest temperature
    in 2013 (°C)
    Previous annual
    warmest
    Years of
    record
    Annual
    average
    Curtin Springs 46.4 on 11 Jan 46.0 on 17 Feb 1992 49 29.6
    Mango Farm 41.5 on 9 Oct = 41.5 on 4 Oct 2003 34 34.1
    Pirlangimpi 38.0 on 23 Sep 37.7 on 22 Oct 2008 34 32.2
    Watarrka 45.3 on 12 Jan = 45.3 on 21 Dec 1990 24 30.5
    Rabbit Flat 46.7 on 25 Jan 46.3 on 6 Dec 2004 18 33.6
    Point Fawcett 36.3 on 26 Oct = 36.3 on 17 Oct 2009 17 31.5



    Record highest annual mean daily maximum temperature
    Mean daily maximum
    temperature
    for 2013 (°C)
    Previous annual
    warmest
    Years of
    record
    Annual
    average
    Alice Springs Airport 30.9 30.5 in 2002 71 28.7
    Brunette Downs 35.3 34.9 in 1988 45 33.5
    Tennant Creek Airport 33.7 33.2 in 1980 43 31.8
    Victoria River Downs 36.0 35.6 in 1965 43 34.4
    Daly Waters AWS 35.7 35.4 in 2002 40 33.8
    Centre Island 32.2 = 32.2 in 2005 37 31.2
    Gove Airport 31.5 31.3 in 1988 32 30.6
    Timber Creek 36.0 35.8 in 2009 32 34.9
    Pirlangimpi 33.4 33.2 in 2010 26 32.2
    Tindal RAAF 35.0 34.6 in 1986 24 33.7
    Yulara Aero 31.3 31.0 in 2005 24 29.9
    Douglas River 35.5 35.2 in 2002 19 34.2
    Point Fawcett 32.3 32.2 in 2005 14 31.5
    Dum In Mirrie AWS 32.3 32.2 in 2010 13 31.7
    Arltunga 29.9 29.8 in 2002 12 28.5
    Bradshaw 36.4 35.9 in 2009 11 35.0
    Middle Point AWS 34.9 34.8 in 2009 11 34.2

    Highest annual mean daily maximum temperature for at least 10 years
    Mean daily maximum
    temperature
    for 2013 (°C)
    Most recent annual
    at least this warm
    Years since
    warmer
    Annual
    average
    Wave Hill 35.7 36.3 in 1992* 19 34.2
    McArthur River Mine 35.7 35.8 in 1988* 15 34.5

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




    Record highest daily minimum temperature
    Highest daily minimum
    temperature
    in 2013 (°C)
    Previous annual
    warmest
    Years of
    record
    Annual
    average
    Mango Farm 28.0 on 26 Jan 27.4 on 6 Jan 1998 34 20.5
    Batchelor Aero 27.8 on 26 Jan 27.2 on 7 Dec 2012 20 21.0
    Groote Eylandt Airport AWS 30.2 on 26 Jan 30.0 on 3 Dec 2007 15 20.7
    Middle Point AWS 27.6 on 26 Jan 27.0 on 29 Jan 2006 13 20.5



    Record highest annual mean daily minimum temperature
    Mean daily minimum
    temperature
    for 2013 (°C)
    Previous annual
    warmest
    Years of
    record
    Annual
    average
    Kulgera 15.1 = 15.1 in 1991 31 13.8

    Highest annual mean daily minimum temperature for at least 10 years
    Mean daily minimum
    temperature
    for 2013 (°C)
    Most recent annual
    at least this warm
    Years since
    warmer
    Annual
    average
    Brunette Downs 20.0 20.3 in 1988 25 18.7
    Curtin Springs 14.8 15.2 in 1998 15 13.4
    Yulara Aero 14.9 15.5 in 1998 15 14.0



    Summary statistics for 2013
    Maximum temperatures
    (°C)
    Minimum temperatures
    (°C)
    Rainfall
    (millimetres)
    Mean
    for
    2013
    Diff
    from
    average
    Highest
    for
    2013
    Mean
    for
    2013
    Diff
    from
    average
    Lowest
    for
    2013
    Total
    for
    2013
    Average
    annual
    total
    Rank
    of
    2013
    Fraction
    of annual
    average
    Darwin-Daly (district 14GA)
    Bradshaw 36.4 +1.4 42.5 9 Oct 22.5 +1.0 7.9 3 Jul 1021.8 1017.7 average 100%
    Cape Don 32.9   37.7 12 Dec 25.8   20.5 11 Aug 1643.4 1277.2 high 129%
    Central Arnhem Plateau 33.0   39.4 26 Oct 20.9   9.7 25 Jul 1152.8
    Croker Island Airport 31.9   36.4 5 Oct 24.5   19.0 9 Aug 1407.8
    Darwin Airport 32.7 +0.7 36.6 10 Oct 23.5 +0.3 15.8 8 Aug 1758.0 1729.7 average 102%
    Douglas River 35.5 +1.3 41.2 9 Oct 20.5 +0.7 7.5 8 Aug 1023.2 1245.2 low 82%
    Dum In Mirrie AWS 32.3 +0.6 36.9 3 May 23.7 +0.4 12.0 25 Jul 1213.2 1750.2 v low 69%
    Jabiru Airport 35.2 +0.9 41.2 1 Nov 23.5 +0.9 15.1 2 Jul 1288.0 1560.8 average 83%
    Katherine Country Club 35.3   41.5 9 Oct 21.1   5.2 26 Jul 1168.6
    McCluer Island 30.3   34.0 9 Jan 25.8   20.8 2 Jul 1291.2 1197.0 average 108%
    Middle Point AWS 34.9 +0.7 40.5 1 Nov 20.9 +0.4 7.7 5 Aug 1323.0 1441.1 low 92%
    Murganella Airstrip     38.9 22 Sep 22.0   10.9 4 Aug
    Pirlangimpi 33.4 +1.2 38.0 23 Sep 23.0 +0.8 14.1 26 Jul 1997.6 2005.8 average 100%
    Point Fawcett 32.3 +0.8 36.3 26 Oct 22.7 -0.1 13.3 7 Aug 856.6 1497.8 v low 57%
    Point Stuart AWS 32.8   36.2 10 Oct 23.1   12.3 4 Aug 1566.0
    Tindal RAAF 35.0 +1.3 41.1 26 Oct 20.8 +0.3 7.0 26 Jul 1130.4 1107.6 average 102%
    Arnhem (district 14BC)
    Cape Wessel 31.8   36.6 10 Jan 25.4   20.4 23 Sep
    Gove Airport 31.5 +0.9 36.2 25 Jan 22.6 +0.2 11.5 8 Aug 1219.8 1449.4 low 84%
    Groote Eylandt Airport AWS 32.5 +0.5 38.1 25 Jan 21.2 +0.5 9.4 9 Aug 1331.2 1364.1 average 98%
    Maningrida Aero 32.4   37.7 22 Sep 22.8   12.7 9 Aug 1231.0
    Ngayawili 31.8 +0.4 36.0 7 Dec 23.3 +0.5 15.0 9 Aug 1394.0 1523.9 low 91%
    North East Island 31.5   35.9 14 Dec 25.3   19.0 10 Aug 1026.8 852.3 average 120%
    Warruwi 31.7 +0.5 37.0 22 Sep 24.8 +0.5 18.2 8 Aug 1242.6 1140.8 average 109%
    Roper-Mcarthur (district 14DE)
    Centre Island 32.2 +1.0 39.7 27 Jan 24.3 +0.5 15.8 2 Jul
    Daly Waters AWS 35.7 +1.9 43.4 25 Jan 19.4 +0.2 3.5 26 Jul 569.4 660.4 low 86%
    McArthur River Mine 35.7 +1.2 43.4 25 Jan 21.1 +1.5 6.5 25 Jul 940.3 760.9 high 124%
    Ngukurr AWS 35.6   43.5 16 Jan 21.6   7.5 9 Aug 672.2
    Wollogorang     42.5 28 Jan 18.9 +0.1 5.4 26 Jul 505.5 945.3 low 53%
    Victoria (district 14F)
    Timber Creek 36.0 +1.1 42.5 9 Oct 21.4 +0.3 7.4 3 Jul 965.0 959.0 average 101%
    Victoria River Downs 36.0 +1.6 42.4 22 Oct 20.5 +1.0 4.6 26 Jul
    Wave Hill 35.7 +1.5 44.7 25 Jan     3.3 26 Jul 428.3 694.8 v low 62%
    Barkly (district 15A)
    Brunette Downs 35.3 +1.8 42.9 7 Mar 20.0 +1.3 6.4 1 Jul 210.4 415.0 low 51%
    Tennant Creek Airport 33.7 +1.9 44.2 25 Jan 20.9 +1.1 7.0 23 Jun 244.1 469.5 low 52%
    Alice Springs (district 15B)
    Alice Springs Airport 30.9 +2.2 44.4 12 Jan 14.0 +0.8 -1.1 25 Jul 182.6 282.3 low 65%
    Arltunga 29.9 +1.4 43.2 12 Jan 14.1 +0.8 -3.4 22 Jun 157.6 296.1 low 53%
    Curtin Springs 31.0 +1.4 46.4 11 Jan 14.8 +1.4 -0.5 23 Jul 200.0 238.7 average 84%
    Kulgera 29.6 +1.3 44.9 8 Jan 15.1 +1.3 0.1 23 Jul 172.1 252.0 low 68%
    Rabbit Flat 35.0 +1.4 46.7 25 Jan 17.5 +1.0 0.7 26 Jul 404.2 480.2 average 84%
    Walungurru 33.5   46.7 9 Jan 20.1   6.9 6 Aug 245.6 254.1 average 97%
    Yulara Aero 31.3 +1.4 46.4 11 Jan 14.9 +0.9 -0.9 25 Jul 196.0 284.1 average 69%

    Notes

    A Annual Climate Summary is prepared to list 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. Later information, including data that has had greater opportunity for quality control, will be presented in the Monthly Weather Review, usually published in the fourth week of the month.

    This statement has been prepared based on information available at 10 am on Thursday 2 January 2014. Some checks have been made on the data, but it is possible that results will change as new information becomes available.

    Averages 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.

    The ACORN-SAT dataset is being used for temperature area averages from December 2012 onwards. The major change from earlier datasets is that the ACORN-SAT dataset commences in 1910, rather than 1950, and hence rankings are calculated using a larger set of years.

    Further information

    Media
    (03) 9669 4057
    Enquiries