Australian Government Bureau of Meteorology
Northern Territory
TOP PRIORITY FOR IMMEDIATE BROADCAST
Heatwave Warning
Issued at 02:44 PM CST on Wednesday 10 December 2025
Valid for Wednesday 10 December 2025 to Saturday 13 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 are expected for the remainder of the week, continuing into the weekend over the eastern Top End.
Severe heatwave conditions across southern parts of NT will over the weekend as a milder change moves through. Severe heatwave conditions are developing over northeastern NT and are expected to peak over the weekend and into early next week. Locations likely to be impacted include Bulman, Kulgera, Kaltukatjara and Yulara.
The next heatwave warning will be issued by 3:00pm CST on Thursday 11 December 2025
Forecast
Brunette Downs (21.4767°S, 137.2295°E, 241m AMSL) set as my default location ›
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7 day forecast
Today: A slight chance of showers and thunderstorms, increasing to a medium to high chance in the Tiwi, Daly and N Arnhem Districts. Thunderstorms in the Tanami and Lasseter Districts are likely to be gusty with little, if any, rainfall. Very hot in the Tanami, Lasseter and Simpson Districts. Light to moderate SE/NE winds, tending NE/NW over the Lasseter District.
Forecast for Brunette Downs (21.4767°S, 137.2295°E, 241m AMSL) Thu Fri Sat Sun Mon Tue Wed Summary 
Minimum 29° 30° 31° 30° 30° 29° 29° Maximum 41° 41° 41° 40° 39° 40° 39° Chance of rain 30% 20% 60% 30% 10% 20% 30% Likely amount < 1mm < 1mm 1-5mm < 1mm < 1mm < 1mm < 1mm UV index Extreme Extreme Extreme Extreme Extreme Extreme Extreme Fire Danger Rating Moderate 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 13
(km/h)7
(km/h)14
(km/h)5
(km/h)21
(km/h)11
(km/h)17
(km/h)18
(km/h)20
(km/h)18
(km/h)22
(km/h)21
(km/h)17
(km/h)-
(km/h)Wind direction NE ESE N ENE NW N SSW SSW SSE S SE SSE E - Relative humidity 34% 18% 35% 17% 34% 18% 30% 20% 27% 19% 25% 16% 29% n/a Dew point 17°C 13°C 18°C 12°C 18°C 13°C 15°C 13°C 12°C 12°C 11°C 10°C 13°C n/a -
Sunrise and sunset times
Sunrise / Sunset for Brunette Downs (21.4767°S, 137.2295°E, 241m AMSL) First light Sunrise Sunset Last light Moon rise Moon set Moon phase Last quarter New moon First quarter 5:32am EST 5:57am EST 7:22pm EST 7:47pm EST 12:10am EST 12:00pm EST 
Waning gibbous
Last quarter Dec 12 New moon Dec 20 First quarter Dec 28 -
Warnings
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Temperature for next 7 days
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Rain for next 7 days
