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Forecast

Mortlake (38.0812°S, 142.808°E, 135m AMSL) set as my default location ›

  1. My MLA

  2. Current condition

    TOMORROW
    Mostly cloudy 11° 25°
    mostly cloudy
    Chance of rain: 20%
    Likely amount: < 1mm
    First
    light     		Sunrise Sunset Last light
    Sunrise Sunset
    6:04am EDT 6:33am EDT 8:49pm EDT 9:18pm EDT
    NOW
    15.5° Feels Like: 15.5°
    Relative Humidity: 94%
    Dew: 14.5°
    Wind: S 7km/h
    Gust: 9km/h
    Rainfall since 9am: 0.0mm
    Pressure: 1030.8hPa

  3. Today Weather

    Mortlake
    Now
    14.8°c
    Feels Like:
    13.5°
    Wind:
    W 11km/h
    Gusts:
    13km/h
    Humidity:
    88%
    Mostly cloudy
     
    11°
    Min
    25°
    Max
    Today in Mortlake
    Partly cloudy. The chance of fog in the early morning. Slight chance of a shower near the Otways, near zero chance elsewhere. Light winds becoming SW 15 to 25 km/h in the middle of the day then tending S in the evening. Overnight temperatures falling to between 10 and 13 with daytime temperatures reaching 24 to 29.
    Tomorrow
    Mostly cloudy
    11°
    Min
    25°
    Max
    Partly cloudy. Slight chance of a shower near the Otways in the early morning. Near zero chance of rain elsewhere. Winds SE 15 to 20 km/h increasing to 25 km/h before turning E 15 to 20 km/h during the day. Overnight temperatures falling to around 12 with daytime temperatures reaching 27 to 33.

  4. Radar

  5. Popup Radar

  6. Warnings

    There are no current warnings for Mortlake

  7. Next 48 Hours


    Next 48 Hours

  8. 7 day forecast

    Today: Partly cloudy. The chance of fog in the early morning. Slight chance of a shower near the Otways, near zero chance elsewhere. Light winds becoming SW 15 to 25 km/h in the middle of the day then tending S in the evening. Overnight temperatures falling to between 10 and 13 with daytime temperatures reaching 24 to 29.

    Forecast for Mortlake (38.0812°S, 142.808°E, 135m AMSL)
      Sat Sun Mon Tue Wed Thu Fri
    Summary Mostly cloudy Fog then sunny Windy Mostly sunny Mostly sunny Mostly cloudy Mostly cloudy
    Minimum 11° 12° 16° 13° 8° 9° 9°
    Maximum 25° 30° 39° 23° 24° 24° 25°
    Chance of rain 20% 30% 30% 10% 5% 10% 10%
    Likely amount < 1mm < 1mm < 1mm < 1mm < 1mm < 1mm < 1mm
    UV index Extreme Extreme Extreme Extreme Extreme Very High Extreme
    Fire Danger Rating Moderate Moderate Extreme 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 11
    (km/h)     		20
    (km/h)     		15
    (km/h)     		12
    (km/h)     		31
    (km/h)     		32
    (km/h)     		20
    (km/h)     		25
    (km/h)     		16
    (km/h)     		22
    (km/h)     		13
    (km/h)     		20
    (km/h)     		14
    (km/h)     		22
    (km/h)
    Wind direction WNW SW ESE ESE NNE W SW SSW S S SSE SSW S SSW
    Relative humidity 84% 44% 80% 34% 42% 22% 75% 40% 64% 37% 74% 40% 75% 41%
    Dew point 14°C 11°C 15°C 11°C 13°C 11°C 13°C 7°C 9°C 7°C 11°C 8°C 11°C 10°C

  9. 28 Day Rainfall forecast

  10. 12 Month Rainfall Forecast

    Mortlake Rain Forecast

    Mortlake 12-month Rainfall Forecast
    Jan
    Feb
    Mar
    Apr
    May
    Jun
    Jul
    Aug
    Sep
    Oct
    Nov
    Dec
    2025
    8
    8
    6
    6
    5
    6
    6
    1
    6
    9
    9
    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

    Mortlake Past 5 Days

    This Month
    Minimum Maximum Rainfall
    Monday
    Jan 20     		15.5 °C 32.5 °C
    0.0 mm
    Tuesday
    Jan 21     		16.8 °C 28.2 °C
    0.0 mm
    Wednesday
    Jan 22     		13.8 °C -
    0.0 mm
    Thursday
    Jan 23     		- 17.2 °C
    -
    Friday
    Jan 24     		8.0 °C 24.2 °C
    0.0 mm
    Legend

  14. Almanac

    Almanac

    Mortlake minimum temp history (38.0812°S, 142.808°E, 135m AMSL)
    MAXIMUM TEMPERATURE MINIMUM TEMPERATURE
    Hottest this month 39.4° 05/01/2025 Coldest this month 5.3° 02/01/2025
    Hottest on record 44.9 29/01/2009 Coldest on record 1.1 03/01/2009
    Hottest this year 39.4° 05/01/2025 Coldest this year 5.3° 02/01/2025
    Long term average 26.3° Long term average 11.2°
    Average this month 28.5° Average this month 12.6°
    Hottest January On Record Avg. max. temp. 28.5° 2014 Coldest January on record Avg. min. temp. 7.5° 2002
    Mortlake rainfall history (38.0812°S, 142.808°E, 135m AMSL)
    RAINFALL
    Wettest This Month 14.0mm 06/01/2025 Total This Month 19.6mm
    4.0 days
    Long Term Average 37.4mm 7.8 days Wettest January on record 134.4mm 2011
    Driest on record 1.6mm 2013

  15. Year to Date

    Mortlake Year To Date

    Average Rainfall To Jan 37.4mm 7.8 day(s)
    Total For 2025 19.6mm 4.0 day(s)
    Total To This Day 2024 57.0mm 8.0 day(s)
    Wettest Day 14.0mm Jan 6
    Lowest Temperature 5.3°C Jan 2
    Highest Temperature 39.4°C Jan 5

  16. Popup - Radar

    Weather Radar for Australia

  17. Popup - Monthly historical

  18. Climatology

    Climate History

    Mortlake Climatology

    Long-Term Averages
    Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec Ann
    Mean Max (°C) 26.3 26.2 24.0 20.0 16.2 13.6 13.0 14.0 15.9 18.3 20.9 23.6 19.3
    Mean Min (°C) 11.2 11.4 10.0 8.1 6.5 5.0 4.6 4.9 5.7 6.5 8.1 9.3 7.6
    Mean Rain (mm) 37.4 30.9 31.5 43.7 57.2 55.7 62.6 64.7 57.4 54.8 48.6 40.6 589.9
    Mean Rain Days 7.8 7.3 10.5 14.2 17.7 18.3 20.3 19.2 18.7 16.8 12.6 11.2 175.8

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