Cairns Weather A tropical paradise,
Cairns weather, the Summer months in Cairns are hot and humid with tropical showers, mostly in the late afternoons. The wet season is the ideal time to visit the Tropical Rainforest, Visiting the Atherton Tablelands or staying overnight on the Great Barrier Reef or relax by the Cairns lagoon. Winter is ideal for walking, visiting parks, Great Barrier Reef tours, cycling, relaxing at the beach.
Cairns All-year Weather
Cairns weather is marked by hot and humid summers and mild, dry winters.
The average annual maximum temperature is 29°C (84.2°F), with 62% humidity.
Summer (December – February)
Cairns has an average temperature in summer range from 23.6°C to 31.4°C (74.5 – 88.5°F).
The wet season starts to build around December, and most of the region’s annual rainfall (around 2000mm or 78.7 inches) occurs in summer months.
This is the ideal time to visit the Daintree Rainforest
It continues to be very wet and warm both day and night in autumn, with temperatures averaging between 21.5°C and 29°C (70.7 – 84.2°F).
The rain eases from April, but it can be windy through to August.
The prevailing south-easterlies continue into October.
Winter (June – August)
Temperatures are slightly cooler and the humidity lower, so it becomes the peak tourist season.
Average temperatures range from 17.5°C to 26°C (63.5 – 78.8°F) and rainfall is low.
Spring (September – November)
Cairns average temperatures range from 20.5°C to 29°C (68.9 – 84.2°F) as the region’s dry season ends and humidity starts to rise in the build-up to the wet season from December.
The climatic changes herald the start of the annual coral spawning in November when the Reef comes alive.
Sunrise and sunset
The longest hours of daylight in the Cairns region are in December, with sunrise at approximately 5:40 am and sunset at 6:45 pm.
June has the least hours of daylight: sunrise is at approximately 6:45 am and sunset at 5:50 pm.
Does Cairns have Daylight Savings?
Daylight saving is not observed in the state of Queensland, so the time zone in Cairns is Australian Eastern Standard Time (AEST), UTC +10.
Cairns average sea temperature in summer at Cairns’ northern beaches ranges from 28.9°C to 29.4°C (84 – 84.9°F) and falls slightly in winter to between 23.8°C and 24.5°C (74.8 – 76.1°F).
It is sensible, and advisable, to wear stinger suits in the beach waters from Cairns to Port Douglas, as box jellyfish and Irukandji (the smallest of the box jellyfish family) can be deadly.
Stinger season, or jellyfish season, is generally between November and May.
The beaches are also lined with monitored stinger nets to keep out the jellyfish and make waters safer for swimmers.
The risk of marine stingers is low on the Great Barrier Reef, but it is better to be over-cautious, as a result, stinger suits are available for free on most tourist boats
Ultraviolet (UV) Index
Visitors should check the UV index in local weather reports when visiting Cairns and Far North Queensland. The index describes the daily solar UV radiation intensity.
Protection from sunburn
Wear sun-smart clothing, including a hat, sunglasses, and using SPF30+ sunscreen to be sure not to get sunburnt. (widely available in pharmacies and supermarkets).
Bug repellent is recommended for midges, mosquitos and sand flies, particularly when fishing in the inlet or from onshore, and wariness is recommended for the waters which are inhabited by crocodiles (observe the signs).