Cairns · AutumnMonth summary
Cairns weather in September
✅ Good
🌡️ Temperature min / max
20°C – 27°C
🌧 Rainy days
31% of days
☀️ Sunshine
11.5h per day on average
🌊 🌊 Season
Autumn
⭐ ⭐ Weather score
8.4/10
📅 📅 Best month
October (8.5/10)
Quick decision
Should you visit Cairns in September?
✅ Good
✅ Yes if: you want good weather with lower prices than peak season.
❌ No if: you need guaranteed perfect weather — some mixed days are possible.
Our take: Favourable conditions in September (8.4/10). October scores higher but the gap is small.
By trip type
Cairns in September by trip type
- 🏙️ 🏙️ City break / culture : ✅ Good
- 🚶 🚶 Outdoor activities : ✅ Good
- 🏖️ Beach / swimming : ✅ Good
- 💰 💰 Budget : 💸 Peak season
Local context
What to expect in September
🎯 One of the best months — 27°C, maximum sunshine and ideal conditions Autumn in Cairns is often underrated: 27°C, golden light and declining crowds. An interesting window. Expect rain on 31% of days — a light raincoat in the bag is recommended. A good balance between weather and crowds, even if October (8.5/10) remains theoretically better.
Browse by month
All months for Cairns
Annual table
Month-by-month comparison
| Month | Min °C | Max °C | Rain % | Precip mm | Sun h/d | Score |
|---|---|---|---|---|---|---|
| ⛅ January | 24°C | 30°C | 75% | 14.0 | 11.4h | 7.1/10 |
| ⛅ February | 24°C | 30°C | 70% | 11.0 | 11.3h | 7.1/10 |
| ⛅ March | 24°C | 30°C | 68% | 11.8 | 10.8h | 7.1/10 |
| 🌤️ April | 23°C | 28°C | 51% | 6.2 | 11.1h | 7.7/10 |
| 🌤️ May | 21°C | 26°C | 40% | 3.0 | 10.8h | 7.9/10 |
| 🌤️ June | 19°C | 25°C | 30% | 1.4 | 10.8h | 8.1/10 |
| 🌤️ July | 19°C | 24°C | 26% | 1.9 | 10.9h | 8.1/10 |
| ☀️ August | 18°C | 25°C | 23% | 1.2 | 11.0h | 8.3/10 |
| 🌤️ September | 20°C | 27°C | 31% | 1.5 | 11.5h | 8.4/10 |
| 🌤️ October | 22°C | 29°C | 28% | 1.6 | 12.0h | 8.5/10 |
| 🌤️ November | 23°C | 30°C | 40% | 2.0 | 12.0h | 7.9/10 |
| 🌤️ December | 24°C | 31°C | 54% | 9.3 | 12.2h | 7.3/10 |
Ideal
Fair
Challenging climate
◀ Current month · Source Open-Meteo · 10 years
📊 Data source
Data based on 10 years of ERA5 records via Open-Meteo, with ECMWF seasonal adjustment. In September, Cairns averages 27°C, 31% rainy days and 11.5h of sunshine per day. Overall weather score: 8.4/10.
See methodology →
Comparison
September vs October (best month)
The best month is October (score 8.5/10). Difference:
- 🌡️ Max temperature : +2°C
- 🌧 Rainy days : -3%
- ☀️ Sunshine : +0.5h/day
FAQ
FAQ — Cairns in September
Is September a good time to visit Cairns?
September is an excellent time to visit Cairns (score 8.4/10). With 27°C, 11.5h of sunshine and 31% rain, conditions are very favourable.
What to do in Cairns in September?
With 27°C and 11.5h of sunshine, all outdoor activities are possible: hiking, sightseeing and terraces.
Accommodation
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Activities & tours
Activities and tours in Cairns
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