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Katoomba Weather in September
Thinking of visiting Katoomba in September? Expect pleasant temperatures reaching 19°C (66°F) during the day, dropping to 6°C (43°F) at night, with some rainfall likely.
Rainfall in Katoomba in September
You can typically expect 11 days of rain this month, averaging around 57 mm (2.2 in). The rainfall pattern this month is fairly balanced. Showers tend to be moderate rather than extreme.
Temperature in Katoomba in September
Daytime highs in Katoomba in September reach 19°C (66°F), with nights around 6°C (43°F). The difference between afternoon and evening temperatures is usually noticeable. Nights fall to 6°C (43°F), which is cold enough to feel it indoors too. A good thick duvet makes all the difference for a comfortable night's sleep.Our weather planner can help you find worldwide destinations with pleasant weather during this period. April and October typically offer the best weather for Katoomba.
Katoomba Temperature in September
Min Temperature
6°C (43°F)
Max Temperature
19°C (66°F)
Chance of Rain
37%
Precipitation
57 mm (2.2 in)
Rainy days
11 days
Katoomba Weather by Month
Pick a month to see the average temperature, rainfall and sunshine in Katoomba - and find the best time to visit.
Daily Historical Temperatures
47-year average (1976-2025)
Based on our historical records, temperatures in Katoomba typically stay consistent throughout September, with daily highs averaging around 19°C (66°F). Nights are cold, with lows typically ranging from 5°C (41°F) to 7°C (45°F).
Average temperatures in September
Daily Historical Precipitation
47-year average (1976-2025)
Average daily rainfall for each day of the month based on long-term records.
Average precipitation in September
Historical weather records for Katoomba in September
Browse day-by-day weather records for Katoomba spanning 51 years. Select any month and year to see actual temperatures, rainfall, and conditions recorded on each day.
Katoomba historical weather extremes in September
Based on 36 years of weather observations (1990-2026), these are the most extreme conditions recorded in Katoomba.
- On September 29, 2000, temperatures climbed to 34°C (93°F), marking the warmest September day on record.
- Nighttime temperatures dropped to -3°C (27°F) on September 11, 2002, marking the coldest September night on record.
Best Places in Australia in September
Find out more about the weather in Australia and which places have the best travel conditions in this month. See all of Australia in September →
perfect weather
pleasant
tolerable
unpleasant
poor
Perfect weather is subjective. On this map perfect weather has been defined with temperatures between 20°C (68°F) and 29°C (84°F) and not too much precipitation (less than 90 mm (3.5 in) a month).
What to Wear in Katoomba in September
Comfortable temperatures call for an easy wardrobe in September. Pack summer basics like t-shirts and shorts, but include a light jacket for cooler moments. A pair of comfortable walking shoes is essential. Wet weather is likely, so pack waterproof gear for multiple rainy days.
What To Do in Katoomba in September
We rated the following activities from 1 (least suitable) to 10 (best) to do.
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Cycling10/10 -
Walking10/10 -
Camping4/10 -
Outdoor sports10/10
Katoomba 3-Day Forecast
More climate data for Katoomba
See the full Katoomba climate overview or explore weather in Australia.
Popular in September
Where to go in September - average daytime high across popular destinations.
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