Cairns weather in September
Cairns in September averages 21°C (70°F) and 9 mm of rain. It is one of the driest months of the year here.
Of the twelve months in Cairns, September is the fifth coldest and the driest.
- Average temp
- 21°C (70°F)
15–27°C · 59–81°F
- Rainfall
- 9 mm
Not much rain
- Sunshine
- —
What is Cairns like in September?
Daytime
Days are warm, typically in the mid-20s°C or above.
Rain
Rain is usually light.
Evening
Evenings are cooler. A layer helps after sunset.
What should I pack for Cairns in September?
A layer for the evening
The day swings about 13°C between its low and its high.
Comfortable walking shoes you can rinse
Dry warm weather is walking weather, and dust gets into everything.
September compared with August and October
September in Cairns is 2.1°C warmer than August and about as wet as it, which averages 19°C (66°F).
September in Cairns is 2.1°C cooler than October and 16 mm drier than it, which averages 23°C (74°F).
Daylight in Cairns in September
On 15 September the sun is up for 12 hours in Cairns, rising about 06:12 and setting about 18:12 local time.
September ends 27 minutes longer than it begins, so the last week of the month is a different length of day from the first.
That is 1 hour 8 minutes short of December, the longest-lit month here.
Where to stay in Cairns
Dates are a starting point for September.
Travel guides for Cairns
What to read before you book.
Cairns weather by month
TemperatureRainfall
How September compares with the rest of the year
September is highlighted. Every other month links to its own page.
| Month | Average | Rainfall |
|---|---|---|
| January | 25°C / 77°F | 227 mm |
| February | 25°C / 77°F | 278 mm |
| March | 24°C / 75°F | 172 mm |
| April | 22°C / 72°F | 32 mm |
| May | 21°C / 69°F | 21 mm |
| June | 19°C / 66°F | 12 mm |
| July | 18°C / 65°F | 14 mm |
| August | 19°C / 66°F | 12 mm |
| September | 21°C / 70°F | 9 mm |
| October | 23°C / 74°F | 25 mm |
| November | 24°C / 76°F | 59 mm |
| December | 25°C / 78°F | 128 mm |
Similar weather in September
Other destinations whose September averages sit close to this one.
Check another month
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FAQs about Cairns in September
September climate averages for Cairns, 1991–2020.
Cairns averages 21°C (70°F) in September, ranging from about 15°C (59°F) at night to 27°C (81°F) in the afternoon. That is a 1991–2020 average, so an individual week can run either side of it.
Barely. September sees only about 9 mm, so rain is unlikely to affect your plans.
No. September averages 21°C (70°F) against 23°C (74°F) in October — 2.1°C cooler.
September is 2.1°C warmer than August, and about as wet.
Yes. September falls inside the most comfortable stretch of the year here, May to October, on temperature and rainfall together.
This page does not show today's weather. It is a 1991–2020 climate normal from Meteostat — a long-run average of what September is usually like, which is what you want when booking months ahead. For today or the coming week, check a live forecast.
About 12 hours of daylight in mid-September, against 13 hours 8 minutes in December and 11 hours 7 minutes in June.
On 15 September, sunrise is about 06:12 and sunset about 18:12 local time. Both shift across the month — the month ends 27 minutes longer than it starts.
