September · Australia
Best time to visit Katherine in September Weather, crowds & prices
Weather in Katherine in September
Average temperature 30°C, 11 mm of rain, about 30 days with 6+ hours of sunshine and 40% humidity — based on the five most recent complete years of ERA5 data (2021–2025).
September score
6.9/10
Ranked #6 of 12 months
- Avg temp
- 30°C
- Rainfall
- 11 mm
- Humidity
- 40%
- Days with 6h+ sun
- 30
- Crowd Density
- Moderate Crowds
- Average Expenses
- $$ · Moderate Cost ($$)
September in Katherine scores 6.9/10 for nature and wildlife travel - an above-average month (#6 of 12). Expect around 30°C, 11 mm of rain, and roughly 30 days with 6+ hours of sunshine this month.
Katherine is the Top End town for Nitmiluk Gorge-river cruises between red sandstone cliffs. Best window: the drier months outside peak monsoon.
September in Katherine — workable with trade-offs
Days in September average 30°C (85°F) — front-load outdoor plans before the heat builds and treat the middle of the day as indoor time.
At just 11 mm for the month, rain will not shape your plans; you get about 30 days with 6+ hours of sunshine and 11.9 hours of daylight.
That is 6.9/10 on the same scale — 6th of 12 months, versus 9.6/10 for the best month here.
Pack the lightest breathable clothing you own, a hat, and more water than feels necessary, footwear you can get muddy.
Budget for mid-season pricing, and crowds are moderate.
If your dates are flexible, July is materially better in Katherine — 2.7 points higher on the same scale.
Frequently asked
- What is the weather like in Katherine in September?
- In September, Katherine averages 30°C, 11 mm of rain, and about 30 days with 6+ hours of sunshine. Its climate-comfort score is 6.9/10.
- Is September a good time to visit Katherine?
- September earns a 6.9/10 climate-comfort score. Use the year-round chart to weigh the weather against your budget and crowd preferences.
- How much does it rain in Katherine in September?
- Expect about 11 mm of rain in September. Average humidity is 40% and there are about 30 days with 6+ hours of sunshine.
Curated in Katherine
Tickets & experiences
Things to do in Katherine
Katherine, Australia. Live activities and tours from GetYourGuide, matched to this destination.