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Onslow (21.6363°S, 115.1124°E, 3m AMSL) set as my default location ›

  2. Onslow Local Weather

    21.64°S, 115.11°E
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    Now in Onslow

    Updated at 03:40 WST

    PAST 24 HOURS

    18.9 °C

    Feels like 20.1 °C
    Dew Point
    16.7 °C
    Gusts
    7km/h
    Relative Humidity
    87%
    Pressure
    1015.9hPa
    Wind
    NE 6km/h
    Rainfall
    0.0mm

    Onslow Airport

    Thevenard Island

    Barrow Island

    Mardie

    Onslow Tuesday Forecast

    Mostly sunny
    Mostly sunny
    18 °C
    30 °C
    5%
    < 1mm
    Onslow for Tuesday
    Mostly sunny. Winds NE/SE 20 to 30 km/h tending NW/NE 15 to 20 km/h in the middle of the day then tending NW/SW in the late afternoon. Overnight temperatures falling to between 15 and 18 with daytime temperatures reaching the low to mid 30s.
    Fire Danger
    Moderate
    DAM LEVELS

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  4. Onslow 48 HOUR FORECAST

    TEMP WIND RAIN CHANCE

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  6. 7 day forecast

    Today: Mostly sunny. Winds NE/SE 20 to 30 km/h tending NW/NE 15 to 20 km/h in the middle of the day then tending NW/SW in the late afternoon. Overnight temperatures falling to between 15 and 18 with daytime temperatures reaching the low to mid 30s.

    Forecast for Onslow (21.6363°S, 115.1124°E, 3m AMSL)
      Tue Wed Thu Fri Sat Sun Mon
    Summary Mostly sunny Mostly sunny Mostly sunny Mostly sunny Clearing shower Sunny Sunny
    Minimum 18° 19° 18° 16° 16° 14° 15°
    Maximum 30° 29° 29° 27° 27° 28° 32°
    Chance of rain 5% 5% 5% 60% 5% 5% 5%
    Likely amount < 1mm < 1mm < 1mm < 1mm < 1mm < 1mm < 1mm
    UV index Very High Very High Very High Very High Very High Very High Very High
    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 10
    (km/h)     		19
    (km/h)     		7
    (km/h)     		22
    (km/h)     		20
    (km/h)     		26
    (km/h)     		16
    (km/h)     		28
    (km/h)     		24
    (km/h)     		28
    (km/h)     		27
    (km/h)     		18
    (km/h)     		27
    (km/h)     		15
    (km/h)
    Wind direction ENE NNW SSW WNW SSW W SW WNW SSW WSW SSE SW S SW
    Relative humidity 56% 43% 63% 51% 63% 47% 54% 51% 53% 29% 50% 26% 41% 22%
    Dew point 15°C 15°C 17°C 17°C 16°C 15°C 12°C 15°C 12°C 7°C 9°C 6°C 8°C 6°C

  7. Sunrise and sunset times

    Sunrise / Sunset for Onslow (21.6363°S, 115.1124°E, 3m AMSL)
    First light Sunrise Sunset Last light Moon rise Moon set Moon phase Full moon Last quarter New moon First quarter
    6:06am WST 6:29am WST 6:10pm WST 6:33pm WST 12:51pm WST 2:06am WST Waxing gibbous Full moon Sep 08 Last quarter Sep 14 New moon Sep 22 First quarter Sep 30

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  9. Tides graph

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  11. Onslow Past 5 Days

    This Month
    Minimum Maximum Rainfall
    Thursday
    Aug 28     		12.9 °C 26.5 °C
    0.0 mm
    Friday
    Aug 29     		14.5 °C 28.0 °C
    0.0 mm
    Saturday
    Aug 30     		14.7 °C 29.1 °C
    0.0 mm
    Sunday
    Aug 31     		13.7 °C 29.1 °C
    0.0 mm
    Monday
    Sep 01     		14.6 °C 30.0 °C
    0.0 mm
    Legend

  12. Almanac

    Onslow minimum temp history (21.6363°S, 115.1124°E, 3m AMSL)
    MAXIMUM TEMPERATURE MINIMUM TEMPERATURE
    Hottest this month 30.0° 01/09/2025 Coldest this month 14.6° 01/09/2025
    Hottest on record 40.0 30/09/2015 Coldest on record 8.4 01/09/1943
    Hottest this year 45.7° 03/03/2025 Coldest this year 9.1° 26/07/2025
    Long term average 30.3° Long term average 15.7°
    Average this month 30.0° Average this month 14.6°
    Hottest September On Record Avg. max. temp. 32.8° 2015 Coldest September on record Avg. min. temp. 13.2° 1943
    Onslow rainfall history (21.6363°S, 115.1124°E, 3m AMSL)
    RAINFALL
    Wettest This Month 0.0mm 01/09/2025 Total This Month 0.0mm
    0.0 days
    Long Term Average 1.6mm 1.1 days Wettest September on record 24.7mm 1970
    Driest on record 0.0mm 2021

  13. Onslow Year To Date

    Average Rainfall To Sep 295.5mm 31.6 day(s)
    Total For 2025 276.0mm 44.0 day(s)
    Total To This Day 2024 93.6mm 31.0 day(s)
    Wettest Day 78.0mm Jan20
    Lowest Temperature 9.1°C Jul26
    Highest Temperature 45.7°C Mar 3

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  2. Warnings

    There are no current warnings for National.

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