Australian Government Bureau of Meteorology
Western Australia
TOP PRIORITY FOR IMMEDIATE BROADCAST
Heatwave Warning
Issued at 12:43 PM WST on Saturday 21 December 2024
Valid for Saturday 21 December 2024 to Tuesday 24 December 2024
Warning for the following areas:
Kimberley, Gascoyne and Central West
Warning for the following areas:
Pilbara, North Interior, Lower West, South West, Great Southern and Central Wheat Belt
Safety Advice::
Extreme heatwaves can be dangerous for everyone.
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 with overnight minimum temperatures in the high twenties to low thirties across northern and western WA.
Large areas of extreme to severe heatwave conditions over northern and northwestern parts of WA. The heatwave is expected to peak this weekend before conditions ease in the south early to mid next week. Locations likely to be impacted include Perth Metropolitan Area, Broome, Derby, Exmouth, Karratha, Merredin, Northam, Paraburdoo, Port Hedland and Wyndham.
The next heatwave warning will be issued by 2:00pm WST on Sunday 22 December 2024
Forecast
Perth (31.9554°S, 115.8586°E, 5m AMSL) set as my default location ›
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My MLA
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Current condition
TODAY21° 41° Chance of rain: 5% Likely amount: < 1mm First
lightLast light Sunrise Sunset 4:40am WST 5:08am WST 7:23pm WST 7:51pm WST NOW26.0° Feels Like: 22.9° Relative Humidity: 28% Dew: 6.1° Wind: SE 11km/h Gust: 15km/h Rainfall since 9am: 0.0mm Pressure: 1013.5hPa -
Today Weather
PerthNow26.0°cFeels Like:22.4°Wind:E 17km/hGusts:24km/hHumidity:33%21°Min41°MaxToday in PerthSunny. Winds E 35 to 50 km/h turning S/SE 20 to 30 km/h in the early afternoon then tending E/SE in the late evening. Gusts up to 70 km/h are possible about the hills and foothills in the morning.Tomorrow27°Min41°MaxSunny morning. The chance of a thunderstorm in the NE in the afternoon and evening. Winds E/NE 25 to 35 km/h tending NW/NE 20 to 30 km/h in the morning then tending S/SW 15 to 25 km/h in the early afternoon. Gusts up to 70 km/h about the hills and foothills in the morning. -
Radar
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Popup Radar
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Warnings
- Heatwave Warning for Western Australia
- Heatwave Warning for Western Australia
- Heatwave Warning for Western Australia
- Heatwave Warning for Western Australia
- Heatwave Warning for Western Australia
- Heatwave Warning for Western Australia
- Heatwave Warning for Western Australia
- Heatwave Warning for Western Australia
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7 day forecast
Today: Sunny. Winds E 35 to 50 km/h turning S/SE 20 to 30 km/h in the early afternoon then tending E/SE in the late evening. Gusts up to 70 km/h are possible about the hills and foothills in the morning.
Forecast for Perth (31.9554°S, 115.8586°E, 5m AMSL) Sun Mon Tue Wed Thu Fri Sat Summary Minimum 21° 27° 20° 16° 13° 12° 15° Maximum 41° 41° 31° 23° 23° 24° 29° Chance of rain 5% 20% 5% 20% 5% 5% 5% Likely amount < 1mm < 1mm < 1mm < 1mm < 1mm < 1mm < 1mm UV index Extreme Extreme Extreme High Extreme Extreme Extreme Fire Danger Rating High High High High - - - 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 27
(km/h)21
(km/h)27
(km/h)25
(km/h)22
(km/h)33
(km/h)24
(km/h)36
(km/h)23
(km/h)33
(km/h)17
(km/h)29
(km/h)17
(km/h)27
(km/h)Wind direction E SSW NE WSW SSW SW SSW SW SSW SW SSE SW ESE SW Relative humidity 33% 21% 16% 23% 55% 42% 55% 47% 47% 41% 51% 45% 46% 33% Dew point 12°C 14°C 7°C 13°C 15°C 15°C 11°C 10°C 7°C 8°C 8°C 11°C 11°C 10°C -
28 Day Rainfall forecast
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12 Month Rainfall Forecast
Perth Rain Forecast
Perth 12-month Rainfall ForecastDecJanFebMarAprMayJunJulAugSepOctNov20242025989766535863105012 - 34 - 78 - 910Well below normalBelow normalNear normalAbove normalWell above normalIssue Notes - Issued Dec 10
ENSO status: La Niña Watch. IOD status: Neutral. SAM status: Negative. Trending positive. The El Niño Southern Oscillation (ENSO) is in a La Niña Watch. The current technical definition of a La Niña is only a small chance to be met, although ocean and atmospheric conditions do resemble a La Niña pattern. Trade winds are still stronger than average along the western equatorial Pacific, and Relative-Nino Index (factors in equatorial ocean temperatures elsewhere around the world, compensating for the background warming signal) is below the threshold. A La Niña typically leads to cooler temperatures northern Australia during summer, while producing higher temperatures for western/southwestern WA, Vic and western Tas. The Indian Ocean Dipole (IOD) is in a neutral phase. Recent conditions have been like a negative IOD, but it is too late in the year for this climate driver to develop. Once the monsoon establishes over northern Australia, the IOD has no impact on Australia’s weather. The Southern AnnularMode (SAM) is in a brief negative phase, having switched a positive phase in November. Forecasts predict it will become neural in mid-late December and become positive in January and February. A positive SAM decreases the frequency of cold fronts, with more regular high pressure systems and easterly winds. During summer, this increases rainfall over eastern Australia, and reduces rainfall over southeastern SA, western Vic and western Tas. Rainfall outlooks are showing above average rainfall over large parts of the country during summer, with closer to average conditions for the southwest corner of WA, southern SA and Vic, and central parts of Tas.
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Popup - Daily historical
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Long range rainfall forecast
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Past 5 Days
Perth Past 5 Days
This MonthMinimum Maximum Rainfall Tuesday
Dec 1715.6 °C 36.5 °C 0.0 mmWednesday
Dec 1818.9 °C 29.0 °C 0.0 mmThursday
Dec 1916.7 °C 29.5 °C 0.0 mmFriday
Dec 2015.8 °C 35.2 °C 0.0 mmSaturday
Dec 2120.0 °C 38.0 °C 0.0 mmLegend -
Almanac
Almanac
Perth minimum temp history (31.9554°S, 115.8586°E, 5m AMSL) MAXIMUM TEMPERATURE MINIMUM TEMPERATURE Hottest this month 40.4° 11/12/2024 Coldest this month 13.4° 05/12/2024 Hottest on record 44.2 26/12/2007 Coldest on record 7.9 07/12/2007 Hottest this year 42.9° 18/02/2024 Coldest this year 3.3° 04/08/2024 Long term average 29.5° Long term average 16.5° Average this month 30.8° Average this month 17.9° Hottest December On Record Avg. max. temp. 31.5° 1999 Coldest December on record Avg. min. temp. 13.9° 2005 Perth rainfall history (31.9554°S, 115.8586°E, 5m AMSL) RAINFALL Wettest This Month 3.6mm 02/12/2024 Total This Month 3.8mm
2.0 daysLong Term Average 9.5mm 3.3 days Wettest December on record 75.8mm 2011 Driest on record 0.0mm 2023 -
Year to Date
Perth Year To Date
Average Rainfall To Dec 721.1mm 108.1 day(s) Total For 2024 613.6mm 107.0 day(s) Total To This Day 2023 596.4mm 97.0 day(s) Wettest Day 44.0mm Jul18 Lowest Temperature 3.3°C Aug 4 Highest Temperature 42.9°C Feb18 -
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Popup - Monthly historical
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Climatology
Climate History
Perth Climatology
Perth Long-Term Averages
Long-Term Averages Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec Ann Mean Max (°C) 31.4 31.7 29.6 26.0 22.4 19.5 18.5 19.1 20.6 23.5 26.7 29.5 24.8 Mean Min (°C) 18.1 18.4 16.9 13.8 10.5 8.7 8.1 8.4 9.7 11.7 14.4 16.5 12.9 Mean Rain (mm) 16.7 13.1 20.0 35.9 86.2 127.1 147.0 122.7 79.3 38.9 24.7 9.5 722.3 Mean Rain Days 2.6 2.4 4.6 6.8 11.0 14.8 17.8 16.1 14.2 8.9 5.6 3.3 107.7