Forecast
Onslow (21.6363°S, 115.1124°E, 3m AMSL) set as my default location ›
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My MLA
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Current condition
TOMORROW27° 36° mostly cloudy Chance of rain: 5% Likely amount: < 1mm First
lightLast light Sunrise Sunset 6:01am WST 6:23am WST 6:30pm WST 6:52pm WST NOW29.9° Feels Like: 34.5° Relative Humidity: 83% Dew: 26.7° Wind: NE 15km/h Gust: 20km/h Rainfall since 9am: 0.0mm Pressure: 1009.3hPa -
Today Weather
OnslowNow29.0°cFeels Like:30.7°Wind:NE 30km/hGusts:32km/hHumidity:87%27°Min36°MaxToday in OnslowPartly cloudy. Slight chance of a shower near the coast, near zero chance elsewhere. The chance of a thunderstorm. Winds E/SE 30 to 45 km/h. Overnight temperatures falling to 22 to 27 with daytime temperatures reaching 33 to 41.Tomorrow27°Min36°MaxMostly sunny. Winds E/SE 25 to 35 km/h. Overnight temperatures falling to 23 to 28 with daytime temperatures reaching 36 to 42. -
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Popup Radar
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Warnings
There are no current warnings for Onslow
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7 day forecast
Today: Partly cloudy. Slight chance of a shower near the coast, near zero chance elsewhere. The chance of a thunderstorm. Winds E/SE 30 to 45 km/h. Overnight temperatures falling to 22 to 27 with daytime temperatures reaching 33 to 41.
Forecast for Onslow (21.6363°S, 115.1124°E, 3m AMSL) Wed Thu Fri Sat Sun Mon Tue Summary Minimum 27° 27° 27° 28° 27° 25° 23° Maximum 36° 37° 37° 38° 36° 34° 34° Chance of rain 5% 5% 5% 30% 40% 5% 5% Likely amount < 1mm < 1mm < 1mm 1-5mm < 1mm < 1mm < 1mm UV index Extreme Extreme Extreme Extreme Very High Very High Very High Fire Danger Rating High Moderate Moderate 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)28
(km/h)20
(km/h)25
(km/h)10
(km/h)24
(km/h)21
(km/h)25
(km/h)29
(km/h)28
(km/h)25
(km/h)27
(km/h)20
(km/h)29
(km/h)Wind direction E NNE E N E NNW E NNE E NNE E N ESE NNW Relative humidity 62% 55% 46% 46% 52% 50% 48% 45% 33% 40% 47% 40% 51% 44% Dew point 23°C 24°C 19°C 21°C 21°C 23°C 21°C 22°C 14°C 18°C 17°C 17°C 17°C 19°C -
28 Day Rainfall forecast
Onslow Rain Forecast
Onslow 28-day Rainfall ForecastSUNMONTUEWEDTHUFRISAT20
21
CHANCE OF RAINFALL WITHIN DISTRICTNIL < 25%LOW 25% to 50%MEDIUM 50% to 75%HIGH ≥ 75%Issued Mar19Issue Notes
The hemispheric long wave pattern has remained stable in recent weeks. There are four main troughs. Currently the most significant troughs are near the longitudes of the Indian Ocean, eastern Australia, the southeast Pacific, and the Atlantic Ocean.
Summary:
Over southern and eastern Australia the cold front events with potential to bring widespread rain are now expected about 2024-03-18, 2024-03-23 and 2024-04-05. Rain events originating in the tropics and moving south are possible about 2024-03-18, 2024-03-23 and 2024-03-28. Over Western Australia the strongest cold fronts should occur about 2024-03-18 and 2024-03-23.
Forecast ExplanationThis forecast is produced by a multi-model ensemble consisting of dynamical atmospheric models, which are forced by the latest observed atmosphere, ocean, land and ice conditions. The models are designed to simulate features of the real atmosphere, including the daily movement of long and short wave patterns in the Southern Hemisphere.
The future probability of rain in each district is estimated using output from the multi-model ensemble, combined with historical information about the difference between the model forecasts and observed rainfall.
In this deterministic framework the skill of the forecast tends to decrease with time, however the forecasts are updated daily to provide the latest estimates of rainfall probability out to 28 days.
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12 Month Rainfall Forecast
Onslow Rain Forecast
Onslow 12-month Rainfall ForecastMarAprMayJunJulAugSepOctNovDecJanFeb20242025967888995977105012 - 34 - 78 - 910Well below normalBelow normalNear normalAbove normalWell above normalIssue Notes - Issued Mar 5
ENSO status: El Niño, breaking down. IOD status: Neutral. SAM status: Neutral, trending slightly positive. The El Niño Southern Oscillation (ENSO) is in an El Niño and is starting to break down. All international models indicate neutral conditions should return by late April or early May. The Southern Oscillation Index (SOI) is back below the threshold of -7, but is varying significantly with tropical activity over Australia and the Pacific. Waters in the Coral Sea are far warmer than normal, especially for an El Niño, and are offsetting the effects of this event. El Niño only has a small effect during autumn, typically increasing rainfall over the Nullarbor and SA, but having little effect elsewhere. The Indian Ocean Dipole (IOD) is in a neutral phase. Ocean temperatures are high across most of the Indian Ocean, with only cooler waters near the WA coast. The IOD has little to no effect during autumn. The Southern Annular Mode (SAM) is neutral and will slightly favour a positive phase during March and April and return closer to true neutral in May. A positive SAM increases easterly winds, increasing rainfall and thunderstorm activity in the east. As we go closer to winter, a positive SAM also reduces cold fronts and rainfall over southern Australia. Rainfall outlooks are predicting average rainfall for the vast majority of Australia throughout autumn. There are some weak signals that southwest WA could be slightly drier than normal in April, and southeast Qld and NSW could be slightly wetter during May, but otherwise near average.
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Popup - Daily historical
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Long range rainfall forecast
Onslow Rain Forecast
Onslow 28-day Rainfall ForecastSUNMONTUEWEDTHUFRISAT20
21
CHANCE OF RAINFALL WITHIN DISTRICTNIL < 25%LOW 25% to 50%MEDIUM 50% to 75%HIGH ≥ 75%Issued Mar19Issue Notes
The hemispheric long wave pattern has remained stable in recent weeks. There are four main troughs. Currently the most significant troughs are near the longitudes of the Indian Ocean, eastern Australia, the southeast Pacific, and the Atlantic Ocean.
Summary:
Over southern and eastern Australia the cold front events with potential to bring widespread rain are now expected about 2024-03-18, 2024-03-23 and 2024-04-05. Rain events originating in the tropics and moving south are possible about 2024-03-18, 2024-03-23 and 2024-03-28. Over Western Australia the strongest cold fronts should occur about 2024-03-18 and 2024-03-23.
Forecast ExplanationThis forecast is produced by a multi-model ensemble consisting of dynamical atmospheric models, which are forced by the latest observed atmosphere, ocean, land and ice conditions. The models are designed to simulate features of the real atmosphere, including the daily movement of long and short wave patterns in the Southern Hemisphere.
The future probability of rain in each district is estimated using output from the multi-model ensemble, combined with historical information about the difference between the model forecasts and observed rainfall.
In this deterministic framework the skill of the forecast tends to decrease with time, however the forecasts are updated daily to provide the latest estimates of rainfall probability out to 28 days.
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Past 5 Days
Onslow Past 5 Days
This MonthMinimum Maximum Rainfall Friday
Mar 1524.9 °C 37.6 °C 9.0 mmSaturday
Mar 1627.8 °C 40.0 °C 0.2 mmSunday
Mar 1728.0 °C 36.7 °C 0.0 mmMonday
Mar 1827.2 °C 34.8 °C 0.0 mmTuesday
Mar 1927.6 °C 36.0 °C 0.0 mmLegend -
Almanac
Almanac
Onslow minimum temp history (21.6363°S, 115.1124°E, 3m AMSL) MAXIMUM TEMPERATURE MINIMUM TEMPERATURE Hottest this month 41.4° 09/03/2024 Coldest this month 23.0° 02/03/2024 Hottest on record 46.3 03/03/2016 Coldest on record 16.0 27/03/2001 Hottest this year 48.7° 21/01/2024 Coldest this year 21.5° 09/01/2024 Long term average 36.2° Long term average 24.3° Average this month 36.3° Average this month 25.9° Hottest March On Record Avg. max. temp. 39.0° 1954 Coldest March on record Avg. min. temp. 22.0° 1956 Onslow rainfall history (21.6363°S, 115.1124°E, 3m AMSL) RAINFALL Wettest This Month 9.0mm 15/03/2024 Total This Month 9.2mm
2.0 daysLong Term Average 62.7mm 3.6 days Wettest March on record 368.4mm 2000 Driest on record 0.0mm 2016 -
Year to Date
Onslow Year To Date
Average Rainfall To Mar 160.4mm 11.4 day(s) Total For 2024 13.0mm 6.0 day(s) Total To This Day 2023 88.6mm 10.0 day(s) Wettest Day 9.0mm Mar15 Lowest Temperature 21.5°C Jan 9 Highest Temperature 48.7°C Jan21 -
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Popup - Monthly historical
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Climatology
Climate History
Onslow Climatology
Onslow Long-Term Averages
Long-Term Averages Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec Ann Mean Max (°C) 36.5 36.3 36.2 34.0 29.4 26.1 25.6 27.4 30.2 33.0 34.4 36.0 32.1 Mean Min (°C) 24.5 25.1 24.3 21.5 17.4 14.4 13.1 13.7 15.6 18.0 20.2 22.5 19.2 Mean Rain (mm) 36.8 60.9 62.7 13.8 51.7 45.3 18.3 8.4 1.5 0.7 2.6 3.2 307.0 Mean Rain Days 3.4 4.4 3.6 2.3 4.5 5.1 3.9 3.0 1.0 0.6 0.5 0.9 33.7