Mort Bay Weather Forecast

    • 19
    • 27

    Partly cloudy

    • 20
    • 28

    Partly cloudy

    • 20
    • 31

    Mostly sunny

    • 21
    • 33

    Sunny

    • 21
    • 33

    Sunny

    • 23
    • 39

    Sunny

    • 20
    • 26

    Cloudy

Today 5 Jan Sydney

Partly cloudy. Slight chance of a shower. The chance of a thunderstorm in the afternoon and evening, possibly severe with damaging winds, large hail and heavy rain which may lead to flash flooding in the outer west in the afternoon and early evening. Winds southerly 15 to 20 km/h turning southeasterly 15 to 25 km/h in the middle of the day.

Sydney Enclosed Waters

Sydney Harbour, Pittwater and Botany Bay
Wind
South to southeasterly 10 to 15 knots.
Seas
Below 0.5 metres.
Weather
Partly cloudy. The chance of a thunderstorm in the afternoon and evening.
Weather Situation
A high in the Tasman Sea extends a ridge towards NSW. A trough will brush along the coast this morning, bringing a southerly change to Sydney Waters. Then, winds will turn northerly again as another high pressure system enters the Tasman Sea midweek.
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  • Temperature Forecast Bureau of Meteorology

  • Temperature Real-Time

Mort Bay Temperature Statistics View More

January Temperature

Sydney (Observatory Hill) (1km)

  • Lowest 2 January, 2026

    17.3 °C

  • Average January

    20.9 °C

  • Highest 3 January, 2026

    26.1 °C

Climate (2021–Present)

Sydney (Observatory Hill) (1km)

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  • Average Low 2021–2026

    14.7 °C

  • Average 2021–2026

    18.3 °C

  • Average High 2021–2026

    23.5 °C
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