September · Australia
Best time to visit Cairns in September Weather, crowds & prices
Weather in Cairns in September
Average temperature 23°C, 59 mm of rain, about 29 days with 6+ hours of sunshine and 75% humidity — based on the five most recent complete years of ERA5 data (2021–2025).
September score
8.2/10
Ranked #4 of 12 months
- Avg temp
- 23°C
- Rainfall
- 59 mm
- Humidity
- 75%
- Days with 6h+ sun
- 29
- Crowd Density
- Moderate Crowds
- Average Expenses
- $$ · Moderate Cost ($$)
September in Cairns scores 8.2/10 for nature and wildlife travel - an above-average month (#4 of 12). Expect around 23°C, 59 mm of rain, and roughly 29 days with 6+ hours of sunshine this month.
Reef boats and rainforest trains leave from Cairns, the main gateway to far north Queensland's two great natural systems.
September in Cairns — reliably good (4th best month)
September averages 23°C (74°F) — warm for the outdoors: start trails early, use shaded routes at midday, and carry more water than you think you need.
Rainfall runs 59 mm, so plan one flexible day in three; you still get about 29 days with 6+ hours of sunshine and 12 hours of daylight.
It scores 8.2/10 here, 4th of 12 months, against 9/10 in the destination's best month.
Pack light clothing, a hat and real sun protection, a packable rain layer, footwear you can get muddy.
Plan for mid-season pricing, with crowds are moderate.
Frequently asked
- What is the weather like in Cairns in September?
- In September, Cairns averages 23°C, 59 mm of rain, and about 29 days with 6+ hours of sunshine. Its climate-comfort score is 8.2/10.
- Is September a good time to visit Cairns?
- September earns a 8.2/10 climate-comfort score. Use the year-round chart to weigh the weather against your budget and crowd preferences.
- How much does it rain in Cairns in September?
- Expect about 59 mm of rain in September. Average humidity is 75% and there are about 29 days with 6+ hours of sunshine.
Curated in Cairns
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