Oyster Bay Weather Forecast

    • 13
    • 23

    Possible late shower

    • 17
    • 21

    Sunny

    • 11
    • 21

    Sunny

    • 13
    • 21

    Shower or two developing

    • 11
    • 17

    Shower or two. Windy

    • 13
    • 20

    Mostly sunny

    • 13
    • 23

    Mostly sunny

Today 19 Sep Sydney

Sunny morning. Patchy fog in the west early this morning. Slight chance of a shower late this afternoon and evening. Light winds becoming north to northeasterly 15 to 20 km/h in the middle of the day then tending north to northwesterly in the early afternoon.

Sydney Enclosed Waters

Sydney Harbour, Pittwater and Botany Bay
Wind
West to northwesterly below 10 knots tending north to northeasterly 10 to 15 knots in the middle of the day then becoming north to northwesterly about 10 knots in the evening.
Seas
Below 0.5 metres.
Weather
Mostly sunny day. 50% chance of showers late this afternoon and evening.
Weather Situation
Winds will tend northerly and strengthen later today as a high pressure system in the Tasman Sea drifts further east. Winds will shift west to southwesterly over the weekend as a strong cold front moves over NSW coastal waters, with west to southwesterly winds persisting into early next week as a series of fronts brush the south of the state.
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  • Temperature Forecast Bureau of Meteorology

  • Temperature Real-Time

Oyster Bay Temperature Statistics View More

September Temperature

Sydney Airport (10km)

  • Lowest 1 September, 2025

    9 °C

  • Average September

    17.5 °C

  • Highest 8 September, 2025

    30.1 °C

Climate (2020–Present)

Sydney Airport (10km)

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  • Average Low 2020–2025

    14.7 °C

  • Average 2020–2025

    18.6 °C

  • Average High 2020–2025

    23.3 °C
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