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Live forecasts update automatically; written guidance last reviewed 23 June 2026 by the Southern Focus Weather Desk. Data from the Bureau of Meteorology (BOM) and other national met services via Open-Meteo.
Live data from Open-Meteo · updates automatically ·
Newcastle’s coastal weather brings mild, humid summers and cool winters, with the live forecast above showing today’s conditions. Expect afternoon sea breezes and occasional showers, especially from the easterly flow off the Tasman Sea.
What is Newcastle’s typical climate pattern?
Newcastle sits on the NSW coast, so its weather is moderated by the ocean. Summer highs average around 26–28°C, while winter drops to 17–18°C. Rainfall is spread fairly evenly, though late summer and autumn can bring heavier falls from east coast lows. The Australia weather hub tracks these patterns.
- Summer (Dec–Feb): Warm and humid, with occasional thunderstorms. Average rainfall about 100–120 mm per month.
- Autumn (Mar–May): Mild and settled, with fewer storms. Clear days are common.
- Winter (Jun–Aug): Cool and crisp, with morning fog. Minimums near 8–10°C.
- Spring (Sep–Nov): Rising temperatures, with variable winds and some rain.
How does the sea breeze affect Newcastle?
The afternoon northeasterly sea breeze cools the coast, often dropping temperatures by 5–8°C compared to inland areas. This breeze can also bring low cloud or drizzle in the morning. For detailed hourly shifts, check Newcastle Weather or the Sydney Weather page for regional comparisons.
When are severe weather events likely?
Newcastle can see east coast lows, which bring heavy rain and strong winds, mainly from late autumn to early spring. The Severe Weather Warning page covers these risks. Coastal erosion and flooding are rare but possible during these systems.
Does Newcastle get hot enough for heatwaves?
Yes, but less than inland NSW. When westerly winds arrive from the ranges, temperatures can spike to 38–40°C for a day or two, then cool quickly with the sea breeze.
How reliable is the 14-day forecast for Newcastle?
It’s useful for trends but less accurate beyond 7 days. The newcastle weather 14 day forecast on BOM gives a good outlook for general patterns, not exact daily details.
What’s the best radar for local rain?
The newcastle weather radar at 256 km range shows approaching systems from the Tasman Sea. Use it for real-time shower tracking, especially in summer.