Weather in Cairns for September 2025
Until now, September 2025 in Cairns has been nearly identical to the historical average, with a temperature of 25.4 °C (showing only a slight deviation of 0 °C).
The forecast for the upcoming days in Cairns predicts a temperature of 27.6 °C, which is slightly above the historical average.
In general, the average temperature in Cairns at the beginning of September is 25.6 °C. As the month progressed, temperatures tended to moderately rise, reaching an average of 27.6 °C by the end of September.
The climate of Cairns in September is notably wet, with an average of 13 rainy days, and a total of 31.5 mm of precipitation.
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Cairns Weather September
Temperatures trend during September in Cairns
September weather in Cairns day by day
| Date | Weather | Temperatures | Rain | UV | More |
|---|---|---|---|---|---|
| 1 Sept. |  Patchy rain possible | 25° /17° | 0.1 mm | 7 | |
| 2 Sept. |  Partly cloudy | 26° /17° | 0 mm | 8 | |
| 3 Sept. | Patchy rain possible | 25° /17° | 0.1 mm | 7 | |
| 4 Sept. |  Sunny | 26° /18° | 0.4 mm | 7 | |
| 5 Sept. | Sunny | 25° /18° | 3.3 mm | 7 | |
| 6 Sept. | Light rain shower | 26° /18° | 2.1 mm | 7 | |
| 7 Sept. | Light rain shower | 26° /19° | 1.6 mm | 7 | |
| 8 Sept. | Light rain shower | 26° /19° | 2.1 mm | 7 | |
| 9 Sept. | Light rain shower | 26° /19° | 1 mm | 7 | |
| 10 Sept. | Patchy rain possible | 26° /19° | 1.7 mm | 7 | |
| 11 Sept. | Light rain shower | 25° /19° | 1.5 mm | 7 | |
| 12 Sept. | Partly cloudy | 25° /18° | 0.1 mm | 7 | |
| 13 Sept. |  Overcast | 25° /18° | 0.5 mm | 7 | |
| 14 Sept. | Light rain shower | 24° /18° | 1.4 mm | 6 | |
| 15 Sept. | Partly cloudy | 25° /18° | 4.3 mm | 7 | |
| 16 Sept. | Partly cloudy | 25° /19° | 1 mm | 7 | |
| 17 Sept. | Patchy rain possible | 27° /20° | 0.9 mm | 2.9 | |
| 18 Sept. | Patchy rain possible | 28° /19° | 0.7 mm | 2.8 | |
| 19 Sept. | Patchy rain possible | 27° /22° | 1.4 mm | 2.7 | |
| 20 Sept. | Patchy rain possible | 28° /21° | 0.4 mm | 2.7 | |
| 21 Sept. | Patchy rain possible | 28° /20° | 0.2 mm | 6 | |
| 22 Sept. | Partly cloudy | 28° /21° | 0.1 mm | 7 | |
| 23 Sept. | Patchy rain possible | 27° /21° | 0.7 mm | 6 | |
| 24 Sept. | Partly cloudy | 26° /18° | 0.1 mm | 7 | |
| 25 Sept. | Sunny | 26° /17° | 0 mm | 7 | |
| 26 Sept. | Partly cloudy | 27° /17° | 0 mm | 7 | |
| 27 Sept. | Sunny | 27° /16° | 0 mm | 7 | |
| 28 Sept. | Sunny | 30° /16° | 0 mm | 7 | |
| 29 Sept. | Sunny | 29° /20° | 0.1 mm | 7 | |
| 30 Sept. | Patchy rain possible | 28° /21° | 0.5 mm | 6 | |
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Cairns in September - FAQ
Cairns water temperatures in September
The average water temperature of the Pacific Ocean near Cairns in September is 23.8 °C. Temperatures remain fairly consistent throughout the month.
- What is the water temperature in Cairns in September?
- The average water temperature in Cairns in September is 23.8 °C.
- Can you swim in Cairns in September?
- Comfortably warm for most people. Sensitive swimmers might prefer a light rash-guard, but wetsuits are rarely needed.
September rainfall patterns in Cairns
UV exposure in Cairns during September
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