Dark Bay Weather Forecast

    • 17
    • 22

    Cloud clearing

    • 17
    • 25

    Sunny

    • 17
    • 27

    Mostly sunny

    • 17
    • 20

    Showers

    • 15
    • 17

    Shower or two

    • 15
    • 19

    Possible shower

    • 13
    • 21

    Sunny

Today 24 Sep Sydney

Partly cloudy. Slight chance of a shower in the late morning and afternoon. The chance of a thunderstorm in the afternoon. Winds northeasterly 20 to 30 km/h becoming light in the late evening.

Sydney Coastal Waters

Broken Bay to Port Hacking
Wind
Northeasterly 15 to 25 knots, reaching up to 30 knots offshore during the afternoon and evening. Winds tending northerly 20 to 25 knots in the late evening.
Seas
1 to 1.5 metres, increasing to 1.5 to 2 metres around midday.
1st Swell
Southerly around 1 metre.
Weather
Mostly sunny.
Weather Situation
A high pressure system over the Tasman Sea directs an east to northeasterly flow through the coastal waters. Winds will freshen and tend more north to northeasterly on Thursday and Friday as the high slips further to the east. A cold front and trough will then enter the Tasman Sea, bringing a southerly change which will gradually track northward through the weekend.
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  • Temperature Forecast Bureau of Meteorology

  • Temperature Real-Time

Dark Bay Temperature Statistics View More

September Temperature

Sydney Airport (14km)

  • Lowest 18 September, 2026

    9.1 °C

  • Average September

    17.9 °C

  • Highest 20 September, 2026

    32.7 °C

Climate (2021–2026)

Sydney Airport (14km)

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  • Average Low 2021–2026

    15 °C

  • Average 2021–2026

    18.8 °C

  • Average High 2021–2026

    23.5 °C
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