Australian Government Bureau of Meteorology
Western Australia
TOP PRIORITY FOR IMMEDIATE BROADCAST
Heatwave Warning
Issued at 01:38 PM WST on Saturday 18 October 2025
Valid for Saturday 18 October 2025 to Monday 20 October 2025
Warning for the following areas:
North Interior and South Interior
Cancellation for the following areas:
Kimberley
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 high thirties to mid forties and overnight minimum temperatures in the low to high twenties over parts of the Interior.
The heat is expected to peak over the Interior this weekend and ease early next week.
Although severe heatwave conditions have eased in the Kimberley, low intensity heatwave conditions are expected to persist into next week. Locations likely to be impacted include Kiwirrkurra and Warburton.
The next heatwave warning will be issued by 2:00pm WST on Sunday 19 October 2025
Forecast
Derby (17.3048°S, 123.6325°E, 10m AMSL) set as my default location ›
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7 day forecast
Today: Partly cloudy. Medium chance of showers in the far N, slight chance elsewhere. The chance of a thunderstorm in the afternoon and early evening. Light winds becoming NW/SW 15 to 20 km/h in the early morning then tending NW/NE in the morning. Overnight temperatures falling to 21 to 27 with daytime temperatures reaching 36 to 42.
Forecast for Derby (17.3048°S, 123.6325°E, 10m AMSL) Sun Mon Tue Wed Thu Fri Sat Summary 
Minimum 26° 26° 26° 26° 27° 26° 26° Maximum 39° 37° 38° 39° 38° 39° 39° Chance of rain 30% 20% 50% 50% 20% 20% 30% Likely amount < 1mm < 1mm < 1mm < 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 11
(km/h)30
(km/h)13
(km/h)23
(km/h)12
(km/h)24
(km/h)13
(km/h)24
(km/h)13
(km/h)22
(km/h)15
(km/h)25
(km/h)17
(km/h)21
(km/h)Wind direction W NNW WNW NW SW NW SW NW WSW NW SW NNW SW NW Relative humidity 51% 43% 59% 44% 55% 40% 51% 37% 49% 36% 52% 35% 48% 32% Dew point 22°C 22°C 23°C 21°C 23°C 21°C 21°C 20°C 21°C 19°C 21°C 20°C 21°C 18°C -
Sunrise and sunset times
Sunrise / Sunset for Derby (17.3048°S, 123.6325°E, 10m AMSL) First light Sunrise Sunset Last light Moon rise Moon set Moon phase New moon First quarter Full moon Last quarter 4:53am WST 5:15am WST 5:47pm WST 6:09pm WST 3:40am WST 4:01pm WST 
Waning crescent
New moon Oct 21 First quarter Oct 30 Full moon Nov 06 Last quarter Nov 12 -
Warnings
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Temperature for next 7 days
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Rain for next 7 days
