The temperatures in Newcastle in September are usually low and can range between 13°C and 20°C.
You can expect about 3 to 8 days of rain in Newcastle during the month of September. It’s a good idea to bring along your umbrella so that you don’t get caught in poor weather.
Our weather forecast can give you a great sense of what weather to expect in Newcastle in September 2025.
If you’re planning to visit Newcastle in the near future, we highly recommend that you review the 14 day weather forecast for Newcastle before you arrive.
Temperatures
20° / 13°
Rainy Days
3
Snowy Days
0
Dry Days
27
Rainfall
81
mm
Sun Hours
11.1
Hrs
