September · Australia
Best time to visit Newcastle in September Weather, crowds & prices
Weather in Newcastle in September
Average temperature 18°C, 44 mm of rain, about 19 days with 6+ hours of sunshine and 67% humidity — based on the five most recent complete years of ERA5 data (2021–2025).
September score
6.8/10
Ranked #7 of 12 months
- Avg temp
- 18°C
- Rainfall
- 44 mm
- Humidity
- 67%
- Days with 6h+ sun
- 19
- Crowd Density
- Moderate Crowds
- Average Expenses
- $$ · Moderate Cost ($$)
September in Newcastle scores 6.8/10 for beach and coastal travel - ranked #7 of 12. Expect around 18°C, 44 mm of rain, and roughly 19 days with 6+ hours of sunshine this month.
Newcastle mixes surf beaches with a harbour city energy-coastal baths and easy day trips north of Sydney. Best window: November through March in the Southern Hemisphere.
September in Newcastle — workable with trade-offs
Temperatures hover around 18°C (64°F) — the kind of month where neither heat nor cold forces the schedule.
With around 44 mm of rain, any showers tend to pass through rather than settle in; about 19 days with 6+ hours of sunshine and 11.8 hours of daylight fill the rest.
That is 6.8/10 on the same scale — 7th of 12 months, versus 9.3/10 for the best month here.
Pack layers you can shed by midday plus one warm layer for the evening.
Expect mid-season pricing, and crowds are moderate.
If your dates are flexible, December is materially better in Newcastle — 2.5 points higher on the same scale.
Frequently asked
- What is the weather like in Newcastle in September?
- In September, Newcastle averages 18°C, 44 mm of rain, and about 19 days with 6+ hours of sunshine. Its climate-comfort score is 6.8/10.
- Is September a good time to visit Newcastle?
- September earns a 6.8/10 climate-comfort score. Use the year-round chart to weigh the weather against your budget and crowd preferences.
- How much does it rain in Newcastle in September?
- Expect about 44 mm of rain in September. Average humidity is 67% and there are about 19 days with 6+ hours of sunshine.
Curated in Newcastle
Tickets & experiences
Things to do in Newcastle
Newcastle, Australia. Live activities and tours from GetYourGuide, matched to this destination.