Hottest (avg)
#9 / 12
Cairns in September
September weather, climate averages, and packing tips.
Avg High
Avg Low
Rain
Daylight 12h
What to expect
September marks a typically warm period of spring, where the weather is warming up. Daytime highs average 25°C / 77°F, dropping to 21°C / 70°F at night.
It is one of the drier times of year, though occasional showers are still possible. The sun is very strong at this time of year, making sun protection essential during the day.
Statistically, this is the driest month historically.
September in context
How it compares to the rest of the year in Cairns.
Wettest (avg)
#1 / 12
Daylight Hours
#7 / 12
Windiest (avg)
#6 / 12
Highest UV
#7 / 12
Most Humid
#12 / 12
Temperature
- Daytime high
-
- Nighttime low
-
- Feels like (avg)
-
Sunshine
- Daylight
- 12.0 hours
- UV index (max)
- 9
- Typical sun hours
- 06:11 – 18:11
Rain & Snow
- Total
-
- Rainy days
- 8
- Cloud cover
- 46%
- Snowfall
-
Humidity & Wind
- Humidity (avg)
- 75%
- Wind (avg)
-
- Wind (max gusts)
-
Frequently asked questions
Is September a good time to visit Cairns?
Typical September days in Cairns reach highs of 25°C (77°F) with nights around 21°C (70°F). It usually feels warm by day and mild after dark. It is one of the drier months, which suits outdoor exploring and sightseeing.
What are temperatures like in September?
In September, you can usually expect highs of 25°C (77°F) and lows near 21°C (70°F). That means warm days and mild nights, so pack layers you can add or remove.
How much does it rain in September?
Rainfall in September averages 23 mm (0.91 in) across roughly 8 days. Overall it is a moderately wet time of year, so showers are usually brief rather than all-day downpours.
How many hours of daylight are there in September?
You can expect about 12 hours of daylight in September. Sunrise is typically around 06:11 and sunset near 18:11. Daylight is fairly typical, with enough time for sightseeing.
How strong is the sun in September?
UV levels frequently reach very high levels (around 9), so strong sun protection is essential, especially around midday.
Is it windy in September?
In September, average wind speeds are around 12 km/h (7 mph), with gusts on the windiest days reaching about 70 km/h (43 mph). On the ground, it is it is a notably windy place, and strong gusts are fairly common.