The temperatures in Katoomba in September are quite cold with temperatures between 5°C and 17°C, warm clothes are a must.
You can expect about 3 to 8 days of rain in Katoomba 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.
Please note that Katoomba can expect a few days of snow in September.
Our weather forecast can give you a great sense of what weather to expect in Katoomba in September 2025.
If you’re planning to visit Katoomba in the near future, we highly recommend that you review the 14 day weather forecast for Katoomba before you arrive.
Temperatures
17° / 5°
Rainy Days
3
Snowy Days
1
Dry Days
26
Rainfall
61
mm
Sun Hours
10.7
Hrs
