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Cairns in September: Weather, Average temperature and Climate

Take a look at past year’s weather for Cairns in September and see if it is worth visiting.
Check flight prices to Cairns on Avionero:
September

Weather in Cairns in September 2024

Great Weather
Warm
☁️
Cloudy
September is an ideal time to visit Cairns if you're seeking a destination with brilliant weather. Anticipate average maximum temperatures of +79°F and about 10 sunny days, ensuring you'll have ample opportunities to soak up the sunshine. It's worth noting, though, that there may be some rainfall, with approximately 18 mm of precipitation over an average of 2 rainy days. So, prepare your sunglasses, a beach towel, and great walking shoes, as it's most likely going to be amazing weather. Search flights in one click on Avionero.
Good to know:
  • September is usually the driest month of the year in Cairns

Average weather

☀️
+79°F
Avg. max. temperature
+50°F
Min.
+91°F
Max.
18 mm
Total precipitation
72%
Avg. humidity
3 m/s
Avg. wind
10 ☀️
Sunny Days
18 ⛅️
Cloudy
2 🌦
Rainy
Our opinion: Cairns has great weather in September.

Average temperature in Cairns in September

Here are the expected maximum, average and minimum temperatures in Cairns for September based on the historical data.
Last Year
Historical Data

The temperature in September is +86°F on average, with a range between a maximum of +91°F during the day and a minimum of +61°F at night.

The average maximum temperature goes up 18% by the end of the month, compared with the beginning of the month, from +82°F to +88°F.

Is Cairns warm or cold in September?

Cairns is typically warm in September.

Maximum temperatures go up compared to the previous month from +75°F to +79°F. The minimum temperature also goes up from +66°F to +68°F.

It’s generally warm, but pack a long-sleeve shirt for evenings.

Take a look at how September is compared to other months in Cairns:

Climate in Cairns in September

Cairns weather looks like this, on average, in September and the surrounding months.
AugustSeptemberOctober
Avg. temperature
+75°F+79°F+81°F
Min. temperature
+50°F+50°F+61°F
Max. temperature
+88°F+91°F+93°F
Rainfall
26 mm18 mm31 mm
Wind
3 m/s3 m/s2 m/s
Humidity
73%72%73%
Air pressure
1015 HPa1014 HPa1012 HPa
Sunny days
9108
Cloudy days
191820
Rainy days
323
Snowy days
000

September often has better weather than August. It’s getting warmer as September arrives. The average maximum temperature goes up from +75°F to +79°F during the day. As September arrives, the amount of rainfall goes down. On average, the rainfall volume decreases from 26 mm to 18 mm. It feels drier, as humidity decreases from 73% to 72%. The average wind speed doesn’t change much during September, staying around 3 m/s. The good news is there are likely to be more sunny days in September, from 9 to 10.

Next month (October) brings a further decline in the weather.

Wind

Wind speed in Cairns in September based on historical data.
Last Year
Historical Data

The average wind speed is 3 m/s getting up to 5 m/s which is a light breeze; barely moving the tree leaves.

The average wind speed in Cairns is gradually decreasing during September, going from 5 m/s to 4 m/s over the course of the month.

Rain

Amount of rainfall in mm during September in Cairns based on historical data.
Last Year
Historical Data
Typically, there is a 13% chance of rain on an average day in September, with total rainfall of approximately 25 mm. The maximum amount of rainfall per day is around 15 mm, which is considered light rain. Cairns is amazing in September with as little as 4 rainy days on average, so plan adventures in the great outdoors.
Here’s how September is compared with other months in the amount of precipitation, total mm:
Cairns wettest month is January, where a typical day has a 52% chance of precipitation and 281 mm of rainfall per day. September, on the other hand, is the driest month with a mere 7% chance of precipitation and 18 mm of rainfall per day.

How was the weather last September in Cairns?

This is the weather in Cairns in September 2023:
1 September
🌧️
+83°F
2 September
☁️
+77°F
3 September
☀️
+83°F
4 September
☀️
+79°F
5 September
☁️
+78°F
6 September
🌧️
+83°F
7 September
☁️
+81°F
8 September
☁️
+83°F
9 September
☁️
+84°F
10 September
☁️
+87°F
11 September
☁️
+87°F
12 September
☀️
+86°F
13 September
☁️
+85°F
14 September
☁️
+85°F
15 September
☁️
+84°F
16 September
☁️
+85°F
17 September
☀️
+88°F
18 September
☁️
+90°F
19 September
☁️
+90°F
20 September
☁️
+91°F
21 September
☁️
+89°F
22 September
☁️
+87°F
23 September
☁️
+86°F
24 September
☁️
+88°F
25 September
☁️
+87°F
26 September
☁️
+89°F
27 September
☁️
+89°F
28 September
☁️
+89°F
29 September
☁️
+86°F
30 September
☁️
+88°F
In September 2023 Cairns had 4 sunny days, 24 cloudy days, and 2 rainy days. The average maximum temperature was +86°F, with an absolute maximum of +91°F and a minimum of +77°F. The average humidity was 77%, with a maximum of 100% and a minimum of 37%. The average wind speed was 3 m/s, with a maximum of 9 m/s and a minimum of 0 m/s.
Are you planning a trip in September?

Climate Change Over the Years

This is how Cairns climate has changed over the last 43 years.

The climate in Cairns in September has changed quite a lot over the last 43 years.

The average temperature was the lowest in 1987 (+75°F) and the highest in 2012 (+93°F). The driest year was 2003 with only 0 mm of rainfall, and the wettest year was 2016 with 116 mm.

FAQ

Frequently asked questions about the weather in Cairns in September:

Is September a good time to visit Cairns?

Yes, September is a great time to go to Cairns, the weather couldn’t be better. Be ready to get outside, explore and enjoy. Check what other months that are a good time to visit Cairns.

Can you sunbathe in Cairns in September?

September is warm in Cairns. You may enjoy some beach or pool time in the day, but pack something a tad warmer for the evening.

Is Cairns rainy in September?

Cairns is usually dry in September. Plan your packing around outdoor activities and exploring.

Is it sunny in Cairns in September?

The amount of sunny days in Cairns during September varies; prepare for a mix of clouds and sun.

Other cities in Australia

Check out the weather for other cities in Australia.

Monthly weather in Cairns

Source of the data

For this page, we’ve looked at the typical weather in Cairns, based on historical hourly weather data from January 1, 1979, to December 31, 2022.

For past dates, we show actual recorded data at the location at that time. Forecasts are based on recorded weather during that day of the year, averaged over the total years for which we have records (unless stated otherwise). The daily temperature is the highest recorded temperature in the shadow during that day.