Australian Government Bureau of Meteorology
Northern Territory
TOP PRIORITY FOR IMMEDIATE BROADCAST
Heatwave Warning
Issued at 02:44 PM CST on Friday 12 December 2025
Valid for Friday 12 December 2025 to Monday 15 December 2025
Warning for the following areas:
Arnhem, Simpson and Lasseter
Safety Advice:
Severe heatwaves can be dangerous for many people, especially older people, babies, children, pregnant and breastfeeding women, people with medical conditions and people who are unwell.
Seek a place to keep cool, such as your home, a library, community centre or shopping centre.
Close your windows and draw blinds, curtains or awnings early in the day to keep the heat out of your home.
If available, use fans or air-conditioners to keep cool.
Maximum temperatures in the low to mid forties and overnight minimum temperatures in the mid twenties in the south. Over the eastern Top End, maximum temperatures in the high thirties to low forties and overnight minimum temperatures in the mid twenties in the south.
Severe heatwave conditions across southern parts of NT will ease over the weekend as a milder change moves through. Severe heatwave conditions are developing over northeastern NT and are expected to peak early next week. Locations likely to be impacted include Alice Springs, Bulman, Jervois and Yulara.
The next heatwave warning will be issued by 3:00pm CST on Saturday 13 December 2025
Forecast
Nyirripi (22.6476°S, 130.5533°E, 519m AMSL) set as my default location ›
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Seven day forecast
Today: A slight to medium chance of showers and thunderstorms, increasing to a medium to high chance in the Daly and Gregory Districts. Thunderstorms in the Simpson and Lasseter Districts may be gusty with little, if any, rainfall. Areas of raised dust in the S Simpson District. Very hot in the Simpson, S Arnhem, W Tanami, NW Simpson and SE Barkly Districts, and a little cooler in the Lasseter and SW Simpson Districts. Light to moderate W/NW winds ahead of a moderate to fresh and gusty SE/SW change extending N over the Lasseter and Simpson Districts during the day.
Forecast for Nyirripi (22.6476°S, 130.5533°E, 519m AMSL) Sat Sun Mon Tue Wed Thu Fri Summary 
Minimum 23° 22° 22° 22° 23° 22° 23° Maximum 38° 37° 38° 39° 39° 39° 37° Chance of rain 90% 40% 5% 5% 5% 30% 30% Likely amount 1-5mm < 1mm < 1mm < 1mm < 1mm < 1mm < 1mm UV index Extreme Extreme Extreme Extreme Extreme Extreme Extreme Fire Danger Rating No Rating Moderate Moderate Moderate - - - Frost risk Nil Nil Nil Nil Nil Nil Nil 9am 3pm 9am 3pm 9am 3pm 9am 3pm 9am 3pm 9am 3pm 9am 3pm Wind speed 11
(km/h)9
(km/h)21
(km/h)14
(km/h)26
(km/h)17
(km/h)27
(km/h)14
(km/h)23
(km/h)11
(km/h)20
(km/h)12
(km/h)15
(km/h)15
(km/h)Wind direction N N E E ESE ESE ESE SE ESE SE E E NE E Relative humidity 37% 24% 40% 24% 18% 14% 18% 11% 15% 10% 26% 13% 43% 26% Dew point 14°C 15°C 13°C 13°C 2°C 6°C 2°C 4°C 1°C 3°C 9°C 6°C 16°C 15°C -
Warnings
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Sunrise and sunset times
Sunrise / Sunset for Nyirripi (22.6476°S, 130.5533°E, 519m AMSL) First light Sunrise Sunset Last light Moon rise Moon set Moon phase New moon First quarter 5:27am CST 5:52am CST 7:21pm CST 7:46pm CST 1:12am CST 1:41pm CST 
Waning crescent
New moon Dec 20 First quarter Dec 28 -
Temperature for next 5 days
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Rain for next 5 days
