Weather in Cairns in September
September in Cairns is warm outdoor weather. Days are long enough to be useful. Shade starts to matter at midday.
In Australia, this is how Cairns actually wears September, not how a country centroid would. Compared with January and July, September sits in the middle of Cairns's year.
Pack for Cairns in September, not for a brochure that was photographed in another season.
- Average temp
- 21°C
15–27°C
- Rainfall
- 9 mm
Not much rain
- Sunshine
- —
What to expect
Daytime
Warm days in Cairns in September. A hat starts to earn its keep at midday. Evenings are the comfortable part of the clock.
You can walk at more hours than in the fierce months. Still build in a pause when the sun is high. Nights are easy.
Rain
Rain is not the story in Cairns in September. Pack for sun. A shower would be news, not a plan.
Do not build the trip around weather windows. Build it around shade if it is hot, and around getting outside if it is not.
Evening
Evenings are cooler. A layer helps after sunset.
What to pack
A layer for cooler evenings
Where to stay in Cairns
Dates are a starting point for September.
Travel guides for Cairns
What to read before you book.
Average weather in Cairns
TemperatureRainfall
Similar weather in September
Other destinations whose September averages sit close to this one.
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FAQs about Cairns
Climate averages for Cairns, 1991–2020.
The best time to visit Cairns is between May and October, the most comfortable stretch of the year on these averages.
December is the hottest month, with an average around 25°C.
February is the wettest month, with about 278 mm of rain.
No. These are 1991–2020 climate normals from Meteostat, not a live forecast. Actual weather in any given week can differ.
