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How Hot Does It Get In Cairns?

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Gabby Boucher
Updated Fri 20 Dec 2024

Cairns is known for its humid, tropical climate with temperatures that can reach up to 31 degrees Celsius in summer (about 88 degrees Fahrenheit). Luckily, Cairns is full of waterfalls, swimming holes, and snorkeling spots on the Great Barrier Reef that make for the perfect escape from the heat. 

Summer is the hottest time of year in Cairns. If you visit at any other time of year, the daily average temperatures drop to around 20 - 26 degrees Celsius (between 68 and 78 degrees Fahrenheit). This article will explore the range of temperatures you can find in Cairns throughout the year, as well as some of the best things to do in Cairns to cool off on those scorching hot days!

aerial view of tropical coastline


How Hot Does It Get In Cairns?


The average daily high temperature for Cairns is around 29 degrees Celsius (or 84 degrees Fahrenheit). This hot weather is usually accompanied by some humidity and rainfall, depending on the time of year. 

Cairns has two main seasons. The rainy season runs from November to March, with February being the wettest month. During this time, average temperatures range from a low of 23 degrees Celsius (73 degrees Fahrenheit) to a high of 31 degrees Celsius (88 degrees Fahrenheit). 

The dry season in Cairns is from April to October. The temperatures become cooler at this time and the humidity drops, so the conditions are more comfortable and this is peak tourism season! During the dry season, low average temperatures are about 18 degrees Celsius (64 degrees Fahrenheit). The average high is about 27 degrees Celsius (80 degrees Fahrenheit).  

waterfalls in cairns


How Hot Does It Get In Cairns In Summer?


So for those wondering, “How hot does it get in Cairns in summer?”, average temperatures can reach up to 31 degrees Celsius (88 degrees Fahrenheit). It is possible to see even higher temperatures in Cairns in summer, and there have been hotter temperatures recorded in history. But that is a rare occurrence, and the average temperature throughout the day in summer sits around 24 - 31 degrees Celsius (75 - 88 degrees Fahrenheit). 

Summer in Cairns is also very humid since it’s in the heart of the rainy season. Although February is the rainiest month, January is typically the hottest month in Cairns. All through December, January, and February, the weather is hot and very humid. You can edit your Cairns packing list so it doesn't include any long pants or jackets - you won't need them!

people splashing around in pool


Ways To Escape The Heat In Cairns


Despite the heat and humidity, there are so many epic things to do in Cairns! Some of the best swimming spots and fun Cairns activities are actually more enjoyable in the heat of summer. Swimming in waterfalls, taking a dip in the Cairns Esplanade Lagoon, or spending a day river rafting may all feel like heaven on a hot summer day in Cairns. 

Escape the heat in Cairns with these tours!

Or you can head to some of the best Cairns beaches for a swim in the ocean! Keep in mind, November to May is stinger season in Cairns, so you should only swim in designated safe swimming areas. You can also go on a day trip to the Atherton Tablelands and go swimming in the waterfalls! The shaded canopies of the rainforest and the fresh, clear water of the waterfalls are the perfect respite from the heat. 

Another option for escaping the soaring temperatures is venturing underwater! Snorkeling in the Great Barrier Reef is one of the most popular day trips from Cairns. Spend a day scuba diving or snorkeling amongst the vibrant marine life of the reef and you’ll forget how hot it is on land!

two people scuba diving great barrier reef


The Best Time To Visit Cairns


Most people would argue that winter is the best time to visit Cairns, but summer has its perks as well. Winter in Cairns brings cooler temperatures, less humidity, and more sunny days for exploring. But because winter is peak tourist season, one could argue that spring or autumn are actually the best seasons to visit Cairns! You’ll enjoy fewer crowds at all the best attractions, and you’ll have great visibility for scuba diving and snorkeling in the Great Barrier Reef

But that doesn’t mean you should skip a visit to Cairns in summer! Even though the temperatures are hot, there are so many great places to swim and cool off around Cairns. The rainy season also makes the local waterfalls even more impressive since there is more water flowing. You can also take advantage of cheaper flights and less crowded tours in summer. There is really no bad time of year to visit Cairns!

people standing at lookout over Cairns


Check out our Great Barrier Reef snorkeling and diving tours from Cairns!

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