Newcastle Weather Forecast

    • 15
    • 20

    Shower or two

    • 12
    • 20

    Shower or two

    • 12
    • 19

    Showers

    • 13
    • 20

    Showers

    • 15
    • 21

    Showers easing

    • 14
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    Shower or two

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    Shower or two

Today 19 May Newcastle

Partly cloudy. Medium chance of showers, becoming less likely later tonight. The chance of a thunderstorm. Winds southwesterly 15 to 20 km/h turning westerly in the evening.

Hunter Coastal Waters

Seal Rocks to Broken Bay
Wind
Southwesterly 15 to 20 knots increasing to 15 to 25 knots in the evening. Winds reaching up to 30 knots offshore south of Port Stephens in the evening.
Seas
Below 1 metre, increasing to 1 to 1.5 metres by early evening, then increasing to 1.5 to 2 metres later in the evening.
1st Swell
Northeasterly 2 to 3 metres.
Weather
Cloudy. 80% chance of showers. The chance of a thunderstorm.
Weather Situation
A trough is crossing the coastal waters, with a low pressure system forming within the trough off the south coast. The low will then head further offshore and remain over the Tasman Sea for the next several days, whipping fresh to strong southerly winds and large powerful waves to the coastline mid to late this week.
Graph Plots Open in Graphs

  • Temperature Forecast Bureau of Meteorology

  • Temperature Real-Time

Newcastle Temperature Statistics View More

May Temperature

Newcastle (Nobbys) (2km)

  • Lowest 8 May, 2026

    8.5 °C

  • Average May

    18.2 °C

  • Highest 4 May, 2026

    25.6 °C

Climate (2021–Present)

Newcastle (Nobbys) (2km)

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  • Average Low 2021–2026

    15.4 °C

  • Average 2021–2026

    18.6 °C

  • Average High 2021–2026

    22.4 °C
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