Monthly climate guide
Newcastle weather in August
With highs near 18°C (64°F) and lows around 12°C (54°F), August feels mild in Newcastle. Rainfall averages about 48 mm (fairly dry) and the sky is a mix of sun and cloud. Daytime highs are about the same as July and 2°C cooler than September.
What stands out in August
- August is among Newcastle's three coolest months.
- It's one of the sunniest months here, with cloud cover around 37%.
- Seasonally, August counts as late winter in Newcastle — the seasons are reversed south of the equator.
- Newcastle is usually about 6°C warmer than Canberra, 360 km away, in August.
Avg high
18°C
64°F
Avg low
12°C
54°F
Rainfall
48 mm
fairly dry
Humidity
68%
relative
Sky
37%
cloud · a mix of sun and cloud
Newcastle weather by month
Show the monthly averages as a table
| Month | Avg high | Avg low | Rain | Humidity | Cloud cover |
|---|---|---|---|---|---|
| January | 27°C / 80°F | 21°C / 70°F | 102 mm | 74% | 56% |
| February | 26°C / 79°F | 21°C / 70°F | 126 mm | 75% | 56% |
| March | 25°C / 77°F | 20°C / 69°F | 123 mm | 76% | 56% |
| April | 23°C / 73°F | 18°C / 65°F | 85 mm | 74% | 49% |
| May | 20°C / 68°F | 15°C / 59°F | 43 mm | 71% | 43% |
| June | 18°C / 64°F | 14°C / 56°F | 89 mm | 75% | 51% |
| July | 17°C / 63°F | 12°C / 54°F | 47 mm | 71% | 40% |
| August | 18°C / 64°F | 12°C / 54°F | 48 mm | 68% | 37% |
| September | 20°C / 69°F | 14°C / 58°F | 45 mm | 67% | 39% |
| October | 23°C / 73°F | 16°C / 61°F | 67 mm | 69% | 49% |
| November | 24°C / 75°F | 18°C / 64°F | 85 mm | 71% | 55% |
| December | 25°C / 78°F | 20°C / 67°F | 84 mm | 72% | 58% |
What to pack for August
- A warm sweater or fleece for layering
- A mid-weight jacket
- A small travel umbrella, just in case
- Sunglasses
Is August a good time to visit Newcastle?
Compare the months in the chart above to find your ideal window.
Best time to visit Newcastle →Other Australia cities in August
Cite or embed this data
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Newcastle weather in August. WeatherCompare, 2026 (NASA POWER / ERA5, 2011–2020 monthly averages). https://weathercompare.eu/weather/australia/newcastle/august
<a href="https://weathercompare.eu/weather/australia/newcastle/august">Newcastle weather in August</a> (WeatherCompare)
<iframe src="https://weathercompare.eu/embed/australia/newcastle" width="300" height="160" style="border:0;border-radius:12px" loading="lazy" title="Newcastle weather in August"></iframe> <p style="font-size:12px"><a href="https://weathercompare.eu/weather/australia/newcastle/august">Newcastle weather in August</a> – WeatherCompare</p>
Newcastle in August: quick answers
Is August a good time to visit Newcastle?
August is a reasonable time for Newcastle: highs around 18°C and about 48 mm of rain, though not one of the three best months.
How warm is Newcastle in August?
Average highs are about 18°C (64°F) and average lows about 12°C (54°F), based on 10 years of daily data.
Does it rain a lot in Newcastle in August?
Newcastle typically gets around 48 mm of rain in August — fairly dry.
Figures are long-term averages for the area around Newcastle (NASA POWER / ERA5, 2011–2020), not a forecast for a specific year. For upcoming days, see the live multi-source forecast.