Boat Harbour Beach Weather Forecast

    • 17
    • 21

    Rain

    • 16
    • 19

    Rain

    • 14
    • 19

    Sunny

    • 14
    • 19

    Shower or two. Becoming windy

    • 15
    • 19

    Showers

    • 17
    • 21

    Shower or two

    • 16
    • 21

    Possible shower

Today 18 May Sydney

Cloudy. Very high chance of rain. Light winds.

Sydney Coastal Waters

Broken Bay to Port Hacking
Wind
Northerly 10 to 15 knots, reaching up to 25 knots offshore in the late evening.
Seas
Below 1 metre, increasing to 1 to 1.5 metres offshore.
1st Swell
Northeasterly 2 to 2.5 metres.
Weather
Cloudy. Near 100% chance of rain. The chance of a thunderstorm offshore.
Weather Situation
A trough in the state's west is heading eastwards and forecast to cross the coastal waters on Tuesday. A low pressure system is forecast to form withing the trough as the system enters the Tasman Sea. The low will then remain over the Tasman Sea while whipping fresh to strong southerly winds and large powerful swells to the coastline mid to late this week.
Graph Plots Open in Graphs

  • Temperature Forecast Bureau of Meteorology

  • Temperature Real-Time

Boat Harbour Beach Temperature Statistics View More

May Temperature

Sydney Airport (10km)

  • Lowest 8 May, 2026

    9.6 °C

  • Average May

    17.9 °C

  • Highest 3 May, 2026

    25.6 °C

Climate (2021–Present)

Sydney Airport (10km)

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  • Average Low 2021–2026

    14.8 °C

  • Average 2021–2026

    18.7 °C

  • Average High 2021–2026

    23.4 °C
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