Cairns weather in September
September is one of the best months to visit Cairns: highs of 26°C (78°F) and about 31 mm (1.2 in) of rain on average. Nights average 17°C (62°F) and cloud cover 34% (NASA POWER, 2001–2025 averages). It is the driest month of the year and the 6th coolest. Compared with August, it is warmer and about as wet; October brings highs of 28°C (82°F) and 62 mm (2.4 in) of rain.
Is September a good time to visit Cairns?
best month Weather score 88/100.
Yes. September is one of the best months for weather in Cairns.
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Does it rain a lot in Cairns in September?
No, it is usually dry: about 31 mm (1.2 in) falls in an average September. It is the driest month of the year.
How warm is Cairns in September?
Days average 26°C (78°F) and nights 17°C (62°F).
Cairns weather by month
| Month | High | Low | Rain | Cloud | Weather |
|---|---|---|---|---|---|
| January | 28°C (82°F) | 22°C (72°F) | 352 mm | 71% | least pleasant |
| February | 28°C (82°F) | 22°C (72°F) | 392 mm | 68% | least pleasant |
| March | 26°C (80°F) | 22°C (71°F) | 392 mm | 69% | least pleasant |
| April | 25°C (77°F) | 20°C (68°F) | 191 mm | 56% | fair |
| May | 24°C (74°F) | 18°C (64°F) | 103 mm | 50% | best |
| June | 22°C (72°F) | 16°C (61°F) | 63 mm | 50% | best |
| July | 22°C (72°F) | 15°C (59°F) | 53 mm | 45% | best |
| August | 23°C (74°F) | 15°C (60°F) | 31 mm | 38% | best |
| September | 26°C (78°F) | 17°C (62°F) | 31 mm | 34% | best |
| October | 28°C (82°F) | 19°C (65°F) | 62 mm | 36% | best |
| November | 29°C (84°F) | 20°C (68°F) | 86 mm | 44% | best |
| December | 29°C (85°F) | 22°C (71°F) | 179 mm | 54% | fair |
Sources: 2001–2025 monthly averages from NASA POWER (MERRA-2 reanalysis). Page updated . How we rate months
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