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Forecast

Rottnest Island (31.9954°S, 115.5396°E, 2m AMSL) set as my default location ›

  1. My MLA

  2. Current condition

    TODAY
    Mostly cloudy 23° 31°
    mostly cloudy
    Chance of rain: 30%
    Likely amount: < 1mm
    First
    light
    Sunrise Sunset Last light
    Sunrise Sunset
    5:06am WST 5:33am WST 7:26pm WST 7:53pm WST
    NOW
    27.1° Feels Like: 21.9°
    Relative Humidity: 60%
    Dew: 18.7°
    Wind: SW 43km/h
    Gust: 48km/h
    Rainfall since 9am: 0.0mm
    Pressure: 1008.0hPa
  3. Today Weather

    Rottnest Island
    Now
    30.8°c
    Feels Like:
    29.9°
    Wind:
    SW 24km/h
    Gusts:
    35km/h
    Humidity:
    53%
    Mostly cloudy
     
    23°
    Min
    31°
    Max
    Today in Rottnest Island
    Partly cloudy. Slight chance of shower. The chance of a thunderstorm. Winds NE/SE 15 to 20 km/h tending NW/SW 20 to 30 km/h in the morning then tending E/SE 15 to 25 km/h in the evening. Daytime maximum temperatures 35 to 41.
    Tomorrow
    Mostly cloudy
    24°
    Min
    31°
    Max
    Partly cloudy. Slight chance of a shower inland. The chance of a thunderstorm inland. Winds E 15 to 25 km/h shifting W/SW in the late morning and early afternoon then becoming light in the late evening. Overnight temperatures falling to the low to mid 20s with daytime temperatures reaching 37 to 42.
  4. Radar

  5. Popup Radar

  6. Warnings

  7. Next 48 Hours


    Next 48 Hours


  8. 7 day forecast

    Today: Partly cloudy. Slight chance of shower. The chance of a thunderstorm. Winds NE/SE 15 to 20 km/h tending NW/SW 20 to 30 km/h in the morning then tending E/SE 15 to 25 km/h in the evening. Daytime maximum temperatures 35 to 41.

    Forecast for Rottnest Island (31.9954°S, 115.5396°E, 2m AMSL)
      Wed Thu Fri Sat Sun Mon Tue
    Summary Mostly cloudy Mostly cloudy Mostly sunny Mostly cloudy Clearing shower Windy Windy
    Minimum 23° 24° 24° 22° 20° 19° 20°
    Maximum 31° 31° 29° 27° 26° 27° 30°
    Chance of rain 30% 40% 30% 40% 5% 5% 50%
    Likely amount < 1mm < 1mm < 1mm < 1mm < 1mm < 1mm < 1mm
    UV index Extreme Extreme Extreme Extreme Extreme Extreme Extreme
    Fire Danger Rating High Moderate High 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 17
    (km/h)
    29
    (km/h)
    15
    (km/h)
    21
    (km/h)
    23
    (km/h)
    26
    (km/h)
    17
    (km/h)
    23
    (km/h)
    33
    (km/h)
    45
    (km/h)
    30
    (km/h)
    42
    (km/h)
    33
    (km/h)
    29
    (km/h)
    Wind direction S SSW SE SW N NW NW WSW SSW SW SSE SSW ESE SSW
    Relative humidity 58% 59% 55% 59% 77% 78% 76% 75% 70% 66% 56% 54% 48% 53%
    Dew point 19°C 21°C 19°C 21°C 23°C 23°C 21°C 21°C 18°C 18°C 13°C 16°C 13°C 18°C
  9. 28 Day Rainfall forecast

  10. 12 Month Rainfall Forecast

    Rottnest Island Rain Forecast


    Rottnest Island 12-month Rainfall Forecast
    Jan
    Feb
    Mar
    Apr
    May
    Jun
    Jul
    Aug
    Sep
    Oct
    Nov
    Dec
    2025
    8
    10
    8
    5
    6
    6
    6
    4
    10
    3
    7
    6
    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 Jan 14

    ENSO status: La Niña-like conditions. IOD status: Neutral. SAM status: Negative. Trending slightly negative. The El Niño Southern Oscillation (ENSO) is in a La Niña-like pattern. Recent conditions show some atmosphere-ocean coupling, resulting in the US declaring a La Niña event has started. A La Niña typically increases rainfall over northern and eastern Australia, while reducing rainfall over southern coastal Australia and western Tas. The Indian Ocean Dipole (IOD) is in a neutral phase and does not play a part in Australia's climate during this time of year. The Southern Annular Mode (SAM) is in a negative phase. Recent forecasts show negative SAM is more likely to dominate for the remainder of summer, due to the polar vortex taking an unusually long time to recover from the stratospheric warming event in winter 2024. During summer, a negative SAM decreases rainfall over most of southeastern Australia, and increases rainfall for far southwest WA 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.

  11. Popup - Daily historical

  12. Long range rainfall forecast

  13. Past 5 Days

    Rottnest Island Past 5 Days

    This Month
    Minimum Maximum Rainfall
    Saturday
    Jan 18
    17.7 °C 25.4 °C
    0.2 mm
    Sunday
    Jan 19
    19.9 °C 31.0 °C
    0.0 mm
    Monday
    Jan 20
    23.3 °C 39.2 °C
    0.0 mm
    Tuesday
    Jan 21
    24.1 °C 34.9 °C
    0.0 mm
    Wednesday
    Jan 22
    23.6 °C 30.7 °C
    0.0 mm
    Legend
  14. Almanac

    Almanac


    Rottnest Island minimum temp history (31.9954°S, 115.5396°E, 2m AMSL)
    MAXIMUM TEMPERATURE MINIMUM TEMPERATURE
    Hottest this month 39.2° 20/01/2025 Coldest this month 16.6° 15/01/2025
    Hottest on record 41.9 30/01/1991 Coldest on record 11.3 05/01/1999
    Hottest this year 39.2° 20/01/2025 Coldest this year 16.6° 15/01/2025
    Long term average 26.6° Long term average 19.1°
    Average this month 28.0° Average this month 20.2°
    Hottest January On Record Avg. max. temp. 29.7° 2012 Coldest January on record Avg. min. temp. 17.7° 1990
    Rottnest Island rainfall history (31.9954°S, 115.5396°E, 2m AMSL)
    RAINFALL
    Wettest This Month 1.6mm 17/01/2025 Total This Month 2.4mm
    4.0 days
    Long Term Average 14.5mm 2.2 days Wettest January on record 59.0mm 2000
    Driest on record 0.0mm 2023
  15. Year to Date

    Rottnest Island Year To Date

    Average Rainfall To Jan 14.5mm 2.2 day(s)
    Total For 2025 2.4mm 4.0 day(s)
    Total To This Day 2024 0.2mm 1.0 day(s)
    Wettest Day 1.6mm Jan17
    Lowest Temperature 16.6°C Jan15
    Highest Temperature 39.2°C Jan20
  16. Popup - Radar

    Weather Radar for Australia

  17. Popup - Monthly historical

  18. Climatology

    Climate History

    Rottnest Island Climatology

    Long-Term Averages
    Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec Ann
    Mean Max (°C) 26.6 27.3 26.1 23.8 21.2 18.8 17.9 18.0 19.0 20.6 23.1 25.2 22.2
    Mean Min (°C) 19.1 19.4 18.7 17.2 15.2 13.4 12.5 12.4 13.0 14.1 15.9 17.7 15.7
    Mean Rain (mm) 14.5 10.9 18.9 33.4 68.5 110.2 115.2 86.2 52.1 27.1 19.2 10.0 561.9
    Mean Rain Days 2.2 1.9 4.0 7.7 11.2 15.5 19.0 17.3 13.4 8.6 5.5 3.3 109.5