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Forecast

Perth (31.9554°S, 115.8586°E, 5m AMSL) set as my default location ›

  1. My MLA

  2. Current condition

    TODAY
    Possible thunderstorm 12° 24°
    possible thunderstorm
    Chance of rain: 90%
    Likely amount: 1-5mm
    First
    light
    Sunrise Sunset Last light
    Sunrise Sunset
    5:33am WST 5:58am WST 6:17pm WST 6:41pm WST
    NOW
    17.2° Feels Like: 13.7°
    Relative Humidity: 52%
    Dew: 7.3°
    Wind: N 15km/h
    Gust: 20km/h
    Rainfall since 9am: 0.0mm
    Pressure: 1012.8hPa
  3. Today Weather

    Perth
    Now
    17.5°c
    Feels Like:
    13.0°
    Wind:
    E 20km/h
    Gusts:
    26km/h
    Humidity:
    53%
    Possible thunderstorm
     
    12°
    Min
    24°
    Max
    Today in Perth
    Partly cloudy. Medium chance of showers. The chance of a thunderstorm in the afternoon and early evening. Winds NE/SE 15 to 25 km/h tending E/NE 25 to 35 km/h early in the morning then shifting NW 20 to 30 km/h in the early afternoon.
    Tomorrow
    Possible shower
    13°
    Min
    23°
    Max
    Partly cloudy. High chance of showers. Light winds becoming NW 15 to 20 km/h in the early afternoon then becoming light in the late afternoon.
  4. Radar

  5. Popup Radar

  6. Warnings

    There are no current warnings for Perth

  7. Next 48 Hours


    Next 48 Hours


  8. 7 day forecast

    Today: Partly cloudy. Medium chance of showers. The chance of a thunderstorm in the afternoon and early evening. Winds NE/SE 15 to 25 km/h tending E/NE 25 to 35 km/h early in the morning then shifting NW 20 to 30 km/h in the early afternoon.

    Forecast for Perth (31.9554°S, 115.8586°E, 5m AMSL)
      Wed Thu Fri Sat Sun Mon Tue
    Summary Possible thunderstorm Possible shower Showers Showers easing Showers easing Possible shower Possible shower
    Minimum 12° 13° 13° 10° 12°
    Maximum 24° 23° 20° 19° 19° 20° 18°
    Chance of rain 90% 90% 90% 90% 10% 90% 80%
    Likely amount 1-5mm 1-5mm 10-20mm 1-5mm < 1mm 1-5mm < 1mm
    UV index High High High High Very 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 20
    (km/h)
    27
    (km/h)
    17
    (km/h)
    24
    (km/h)
    24
    (km/h)
    27
    (km/h)
    24
    (km/h)
    32
    (km/h)
    17
    (km/h)
    21
    (km/h)
    14
    (km/h)
    25
    (km/h)
    24
    (km/h)
    30
    (km/h)
    Wind direction NE NNW N NW NNW W W W SW WSW NNE WNW SSW SW
    Relative humidity 55% 65% 79% 57% 86% 67% 66% 60% 67% 49% 66% 51% 68% 49%
    Dew point 10°C 15°C 15°C 13°C 16°C 12°C 10°C 10°C 11°C 7°C 9°C 9°C 9°C 6°C
  9. 28 Day Rainfall forecast

    Perth Rain Forecast


    Perth 28-day Rainfall Forecast
    SUN
    MON
    TUE
    WED
    THU
    FRI
    SAT
    29
    HIGH
    30
    HIGH
    Oct 1
    HIGH
    2
    HIGH
    3
    MEDIUM
    4
    HIGH
    5
    MEDIUM
    6
    7
    8
    9
    10
    11
    12
    LOW
    13
    14
    LOW
    15
    16
    LOW
    17
    18
    19
    20
    MEDIUM
    21
    22
    23
    24
    25
    LOW
    26
    LOW
    27
    LOW
    CHANCE OF RAINFALL WITHIN DISTRICT
    NIL < 25%
    LOW 25% to 50%
    MEDIUM 50% to 75%
    HIGH ≥ 75%
    Issued Sep28

    Issue Notes

    The hemispheric long wave pattern has been relatively fast moving in recent weeks. There are six main troughs. Currently the most significant troughs are near the longitudes of the Indian Ocean, Western Australia, eastern Australia, the south Pacific, South America, and the Atlantic Ocean.

    Summary:

    Over southern and eastern Australia the cold front events with potential to bring widespread rain are now expected about 5 October to 9 October, 19 October to 23 October, and 29 October to 2 November. Rain events originating in the tropics and moving south are possible about 9 October to 13 October, 22 October to 26 October, and 29 October to 2 November. Over Western Australia the strongest cold fronts should occur about 5 October to 9 October, 14 October to 18 October, and 28 October to 1 November.

    Forecast Explanation

    This 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.

  10. 12 Month Rainfall Forecast

    Perth Rain Forecast


    Perth 12-month Rainfall Forecast
    Sep
    Oct
    Nov
    Dec
    Jan
    Feb
    Mar
    Apr
    May
    Jun
    Jul
    Aug
    2021
    2022
    3
    5
    7
    6
    7
    8
    6
    4
    7
    2
    3
    5
    10
    5
    0
    1
    2 - 3
    4 - 7
    8 - 9
    10
    Well below normal
    Below normal
    Near normal
    Above normal
    Well above normal

    Issue Notes - Issued Sep 16

    ENSO status: Neutral, however five of seven models suggest La Niña thresholds may be met again between October and January. IOD status: Neutral, returning from negative values in the recent weeks. SAM status: Positive. The El Niño–Southern Oscillation (ENSO) is currently neutral. However, there are growing signs that La Niña could redevelop in the Pacific Ocean later this year, which has prompted the US Climate Prediction Centre to increase its prediction of La Niña occurring this year to 70-80 percent. However their thresholds are lower than the Bureau of Meteorology's. Five of seven models forecast temperatures may reach or exceed La Niña thresholds between October and January. Three of seven predicted an established event, which requires La Nina thresholds to be met for three months. La Niña typically brings above average rainfall in northern and eastern Australia. The Indian Ocean Dipole (IOD) is currently neutral, returning from negative values in the recent weeks. Three of five models areforecasting the IOD event will officially end in October, with all models ending the event in December. A negative IOD generates above average rain to southern and eastern Australia. As such, average to above average rainfall is predicted across much of the country this winter and spring.

  11. Long range rainfall forecast

    Perth Rain Forecast


    Perth 28-day Rainfall Forecast
    SUN
    MON
    TUE
    WED
    THU
    FRI
    SAT
    29
    HIGH
    30
    HIGH
    Oct 1
    HIGH
    2
    HIGH
    3
    MEDIUM
    4
    HIGH
    5
    MEDIUM
    6
    7
    8
    9
    10
    11
    12
    LOW
    13
    14
    LOW
    15
    16
    LOW
    17
    18
    19
    20
    MEDIUM
    21
    22
    23
    24
    25
    LOW
    26
    LOW
    27
    LOW
    CHANCE OF RAINFALL WITHIN DISTRICT
    NIL < 25%
    LOW 25% to 50%
    MEDIUM 50% to 75%
    HIGH ≥ 75%
    Issued Sep28

    Issue Notes

    The hemispheric long wave pattern has been relatively fast moving in recent weeks. There are six main troughs. Currently the most significant troughs are near the longitudes of the Indian Ocean, Western Australia, eastern Australia, the south Pacific, South America, and the Atlantic Ocean.

    Summary:

    Over southern and eastern Australia the cold front events with potential to bring widespread rain are now expected about 5 October to 9 October, 19 October to 23 October, and 29 October to 2 November. Rain events originating in the tropics and moving south are possible about 9 October to 13 October, 22 October to 26 October, and 29 October to 2 November. Over Western Australia the strongest cold fronts should occur about 5 October to 9 October, 14 October to 18 October, and 28 October to 1 November.

    Forecast Explanation

    This 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.

  12. Popup - Daily historical

  13. Past 5 Days

    Perth Past 5 Days

    This Month
    Minimum Maximum Rainfall
    Friday
    Sep 24
    11.8 °C 21.1 °C
    0.0 mm
    Saturday
    Sep 25
    11.0 °C 23.4 °C
    0.0 mm
    Sunday
    Sep 26
    11.1 °C 21.1 °C
    10.8 mm
    Monday
    Sep 27
    10.4 °C 20.7 °C
    1.4 mm
    Tuesday
    Sep 28
    11.6 °C 22.2 °C
    0.0 mm
    Legend
  14. Almanac

    Almanac


    Perth minimum temp history (31.9554°S, 115.8586°E, 5m AMSL)
    MAXIMUM TEMPERATURE MINIMUM TEMPERATURE
    Hottest this month 30.4° 22/09/2021 Coldest this month 3.7° 04/09/2021
    Hottest on record 34.2 20/09/2014 Coldest on record 1.0 22/09/2008
    Hottest this year 42.2° 08/01/2021 Coldest this year 1.1° 26/06/2021
    Long term average 20.5° Long term average 9.6°
    Average this month 21.2° Average this month 8.9°
    Hottest September On Record Avg. max. temp. 22.5° 2015 Coldest September on record Avg. min. temp. 7.6° 2016
    Perth rainfall history (31.9554°S, 115.8586°E, 5m AMSL)
    RAINFALL
    Wettest This Month 10.8mm 26/09/2021 Total This Month 56.8mm
    12.0 days
    Long Term Average 82.7mm 14.6 days Wettest September on record 144.2mm 2013
    Driest on record 31.4mm 2019
  15. Popup - Radar

    Weather Radar for Australia

  16. Year to Date

    Perth Year To Date

    Average Rainfall To Sep 654.8mm 90.7 day(s)
    Total For 2021 712.0mm 101.0 day(s)
    Total To This Day 2020 563.6mm 95.0 day(s)
    Wettest Day 46.2mm May 5
    Lowest Temperature 1.1°C Jun26
    Highest Temperature 42.2°C Jan 8
  17. Popup - Monthly historical

  18. Climatology

    Climate History

    Perth Climatology

    Long-Term Averages
    Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec Ann
    Mean Max (°C) 31.2 31.5 29.6 26.0 22.3 19.5 18.5 19.1 20.5 23.5 26.7 29.3 24.8
    Mean Min (°C) 18.1 18.3 16.8 13.8 10.5 8.6 8.0 8.4 9.6 11.6 14.3 16.4 12.8
    Mean Rain (mm) 18.4 14.3 20.4 35.4 88.6 126.2 146.8 122.0 82.7 37.1 24.2 10.4 721.4
    Mean Rain Days 2.9 2.4 4.7 6.8 11.2 14.6 17.6 15.9 14.6 8.9 5.7 3.5 107.7