Cooktown in September
September is right in the heart of spring for Cooktown, and the weather has a definite personality this time of year.
Daytime highs average 27.6 degrees, dropping to 22.5 degrees overnight. That's a 5-degree swing between day and night. That's solidly pleasant territory. Great for being outdoors.
At 27.6 degrees, September sits 1.0 degrees below the annual average of 28.6 degrees.
You're looking at 25mm of rain across 9 days in a typical September. Nothing dramatic.
Solar exposure averages 20.9 MJ/m2 per day in September, with UV levels in the extreme range. Sunscreen, hat, and sunnies are all essential. You can burn in under 10 minutes.
September earns a 8.2/10 on our Comfort Score. This is prime time.
Packing tip: bring a mix of short and long sleeves, and SPF 50+ sunscreen and a hat.
The full data breakdown is below. You can also see how other Australian cities compare in September.
September at a Glance
Temperature Range
Daily temperature range in September. The bar shows the typical spread between overnight lows and afternoon highs.
What to Pack
- Comfortable casual wear suitable for warm days
- A light rain jacket just in case
- Strong sun protection including a hat and SPF 50+
Coming From Overseas?
How September in Cooktown stacks up against major cities around the world.
About 8 degrees warmer and considerably drier.
About 2 degrees warmer and considerably drier.
About 1 degrees warmer and considerably drier.
How September Compares
Cooktown's monthly climate at a glance. September is highlighted.
| Month | Max | Min | Rain | Comfort |
|---|---|---|---|---|
| Jan | 31.2 | 25.4 | 413mm | 3.1 |
| Feb | 30.4 | 24.8 | 205mm | 3.5 |
| Mar | 29.1 | 24.8 | 510mm | 3.9 |
| Apr | 28.6 | 24.6 | 98mm | 5.6 |
| May | 26.9 | 23.5 | 46mm | 6.8 |
| Jun | 26.3 | 20.6 | 16mm | 8.5 |
| Jul | 25.5 | 20.2 | 25mm | 9.1 |
| Aug | 26.3 | 20.8 | 21mm | 8.7 |
| Sep | 27.6 | 22.5 | 25mm | 8.2 |
| Oct | 29.1 | 24.1 | 15mm | 7.6 |
| Nov | 30.2 | 24.9 | 24mm | 6.6 |
| Dec | 31.7 | 24.7 | 203mm | 3.5 |