Short version first, because you came here for a decision, not a weather lecture. The best time to visit Cairns for postcard weather is June to October: the driest, coolest, sunniest stretch of the year, with stinger season finished and whales moving up the coast. May and November are the sweet-spot shoulders, warm and mostly dry with fewer people about. December to April is the wet season: hot, humid and spectacular, with the waterfalls at full throttle and the rainforest glowing, as long as you can live with afternoon downpours, a stinger suit on the beach and the small chance a cyclone rearranges your week. We call Cairns home and we would happily take any of the three, but they are very different holidays. Here is how to pick yours.
What kind of trip are you after?
The reef. Any month. Boats go out year-round, and the dry season generally brings calmer seas and clearer water. From roughly November to May you will be handed a lycra stinger suit on the boat and think nothing of it after the first five minutes. In winter you might see whales from the deck. Our guide to choosing a Great Barrier Reef trip covers the boats, the pontoons and the islands.
Waterfalls and rainforest. December to April, when the falls thunder and every shade of green turns up the volume. The trade-off is that the same rain that makes the falls roar can close the swimming holes, which our waterfall road trip explains stop by stop.
Beach days. June to October. Stinger season is over, the humidity drops and the northern beaches are at their easiest. Which beaches are patrolled, and on which days, changes with the season, so the live list is always Surf Life Saving Queensland’s beach report.
Hiking, camping and the Tablelands. The dry season, without question. Cooler nights, dry tracks and open campgrounds. Our guide to Cairns in winter is the long version.
Whales. May to September, and the details matter. The dwarf minke encounters peak in June and July out on the Ribbon Reefs, and the humpback day cruises run from mid July into early September. Our whale season guide has the dates and the boats.
Value. The wet season and the two shoulders. In our experience beds are easier to find and rates are softer from December to April, with the exception of the Christmas and January school holiday weeks. Compare rates for the specific dates before you assume anything; see where to stay in Cairns for the areas.
Kids. Any month, as long as you plan around the water. The free Esplanade Lagoon is open all year, and our things to do with kids guide is sorted by age bracket. The Queensland school holiday weeks are the busy ones, and they are listed further down.
Over 60s. June to October, and July if you can pick one month: the Bureau of Meteorology’s long-term average maximum for Cairns Aero is 25 degrees in July, against 31 in the December to February peak. Our Cairns for over-60s guide plans the whole trip around that window.
Cairns weather month by month
Every figure below comes from the Bureau of Meteorology’s climate statistics for Cairns Aero, the airport weather station, averaged over 83 years of records from 1942 to 2026 (sunshine hours are the 1973 to 2016 record). Days and nights are the average maximum and minimum. A rain day is any day with a millimetre or more.
Cairns climate averages, month by month. Bureau of Meteorology, Cairns Aero, read September 2026.
| Month | Days | Nights | Rain | Rain days | Sun (hrs) |
|---|---|---|---|---|---|
| January | 31.5 | 23.8 | 405mm | 16 | 6.8 |
| February | 31.3 | 23.8 | 438mm | 16 | 6.2 |
| March | 30.7 | 23.2 | 422mm | 16 | 6.5 |
| April | 29.4 | 21.8 | 202mm | 14.5 | 6.8 |
| May | 27.7 | 20.0 | 92mm | 10.5 | 6.8 |
| June | 26.1 | 18.0 | 46mm | 7 | 7.2 |
| July | 25.9 | 17.2 | 33mm | 5.7 | 7.4 |
| August | 26.7 | 17.4 | 27mm | 4.9 | 8.1 |
| September | 28.2 | 18.8 | 34mm | 4.9 | 8.7 |
| October | 29.7 | 20.7 | 47mm | 5.7 | 8.8 |
| November | 30.8 | 22.4 | 88mm | 7.8 | 8.5 |
| December | 31.5 | 23.4 | 194mm | 10.7 | 7.8 |
How to read thisAverages flatten the texture. A wet-season month is mostly hot sun broken by short, heavy downpours, not weeks of grey drizzle, and the rain days column tells you the odds better than the millimetres do. Source: Bureau of Meteorology, Cairns Aero climate statistics.
What each month is actually like
January. Peak wet. Hot, sticky, rain about every second day, waterfalls huge. Stinger suits on.
February. The wettest month on average and the least sunny. Rainforest at its greenest.
March. Still properly wet, with morning humidity among the year’s highest. Quiet and lush.
April. The turn. Rain halves, days ease. Stinger season still on. Queensland school holidays early in the month.
May. Shoulder gold. Warm, drying out, whales arriving. Stinger season runs to the end of the month.
June. Dry season proper. Minke season on the reef, Ironman in town, school holidays from late June.
July. The coolest month and the busiest. The Cairns Show, school holidays to mid July, whales everywhere.
August. The driest month of the year. Beach weather, Amateurs weekend, the Cairns Festival begins late in the month.
September. Lowest afternoon humidity of the year, big skies, Cairns Festival, school holidays from late September.
October. The sunniest month and the fewest cloudy days. Warming up fast, water still calm.
November. Shoulder with a catch: stinger season and the official cyclone season both start in November. Storms build in the afternoons.
December. The wet arrives, and so do the Christmas holidays from mid month. Hot, green and lively.
The dry season, May to October
This is the Cairns on the brochures, and for once the brochures are right. From May the rain tapers, the humidity drops, and by August you are looking at fewer than five rain days in the month and more than eight hours of sunshine a day. Days sit in the mid to high 20s, nights drop into the high teens, and locals reach for a jumper at 17 degrees while visitors from Melbourne swim in it. It is hiking season, camping season, beach season and whale season all at once, which is exactly why it is also peak season. Book ahead for July in particular. The full picture, including what winter does badly, is in our Cairns in winter guide.
The wet season, November to April
The wet is the season people worry about and the one locals quietly love. November and December are the build-up, with afternoon storms and rising humidity. January to March is the real thing: over 400mm a month on average, rain on roughly half the days, and 31 degree days with nights that average the low to mid 20s. What you get for it is the rainforest at full volume, waterfalls you can hear before you see, empty beaches, softer prices and a town that belongs to the people who live in it. Reef boats keep running, and a reef day in the rain is still a reef day. What changes is the swimming: beaches are inside the stinger enclosures, and the swimming holes close when the creeks run high. Our honest wet season guide walks through what gets better, what gets harder and how locals plan a day around the radar, and there is a whole page on what to do in Cairns when it rains.
Stinger season and where you can swim
Cairns Regional Council puts it this way: “Stinger season generally runs from November to May. The stinger resistant swimming enclosures at local beaches give a high degree of protection against Box Jellyfish (but are not 100 percent ‘stinger proof’).” That is from the council’s own beaches page, and it is the wording to plan around. In practice, from November to May ocean swims happen inside the enclosures and between the flags, ideally in a stinger suit, and from June to October the whole beach opens up again. Outside the enclosures and the patrolled hours the rules do not change with the calendar. The council describes the free Esplanade Lagoon as “an all-year round, safe swimming location, monitored by lifeguards”, which is why it is the answer to most swimming questions in most months.
Freshwater is a separate question, and it is not a seasonal one. The Queensland Government’s Be Crocwise advice is blunt: “No waterway within their natural range can be considered crocodile free.” Our swimming safety guide quotes the authorities in full, and our stinger season guide covers the jellyfish side properly.
Cyclone season
The Bureau of Meteorology’s own words: “Australia’s tropical cyclone season runs from 1 November to 30 April. They can happen at other times in our region but this is rare.” That is the whole of what we will say about it in our own voice. If you are travelling between November and April, read our cyclone page before you go: it quotes the Bureau, Get Ready Queensland and the two council disaster dashboards, and tells you where the live information comes from if a system forms while you are here.
Whales, waterfalls and mangoes
Three seasonal bonuses are worth building a trip around. Whales, from May to September, with the dwarf minke encounters peaking in June and July and the humpback cruises running from mid July to early September; the whale season guide has the boats and the booking lead times. Waterfalls, from December to April, when the waterfall road trip is a completely different drive from the one you get in September. And fruit: the markets change character through the year, and our tropical fruit season guide tells you month by month what is actually on the tables at Rusty’s.
School holidays, events and the busy weeks
Queensland’s school holidays fall in early to mid April, from late June to mid July, from late September to early October, and from mid December to late January. The exact dates for each year are on the Queensland Government term dates page, and remember the other states run different calendars, so the July window in particular fills with southern families escaping their winter. On the events side, Ironman closes roads in June, the Cairns Show and the chamber music festival own July, the Amateurs racing carnival is August, the Cairns Festival runs across late August and early September, the game fishing tournaments start in September and the T20 Gold Clash lands in November. All of them move a lot of beds. Our festivals and events calendar is refreshed weekly, and if you would rather not share the Esplanade with a cruise ship’s worth of new arrivals, check our cruise ship days page before you pick a city day.
So when is the cheapest time to visit Cairns?
Honestly, it depends on the bed and the dates, and we would rather you compared rates than took our word for it. What we see, living here, is that the wet season months from December to April are the easiest time to find a room and the softest on price, apart from the Christmas and January school holiday weeks, and that May and November give you most of the dry-season weather without the July prices. If a cheap flight lands you in Cairns in February, do not cancel it. Read the wet season guide, pack a light rain jacket you will never use because it is too hot, and go.
Activity guides
Most of what people book in Cairns is an activity rather than a place. These go deeper on each one: game fishing and the black marlin season, diving, courses and liveaboards, white water rafting on the Tully and the Barron, scenic flights and helicopter tours, and hot air ballooning over Mareeba.
Book tours and experiences
Check live prices and availability with our booking partner Viator:
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FAQs
What is the best month to visit Cairns? For weather alone, August to October: the driest months on the Bureau of Meteorology’s 83-year record, with eight to nine hours of sun a day and days in the high 20s. For fewer people, May or November. For waterfalls and lush rainforest, January to March.
When is the rainy season in Cairns? The wet season runs roughly November to April. January, February and March are the wettest months, each averaging more than 400mm and about 16 rain days. February is the wettest of all at 437.5mm.
Is Cairns too hot in summer? Summer days average 31.5 degrees with nights around 24 and 3pm humidity in the 60s. It is hot and it is humid, and locals plan the day around it: early starts, a swim in the lagoon, air-conditioning or the reef in the middle of the day.
When is stinger season in Cairns? Cairns Regional Council says stinger season “generally runs from November to May”. Netted enclosures go in at the main beaches for the season, and the council notes they are not 100 per cent stinger proof. The Esplanade Lagoon is the year-round alternative.
Can you visit the Great Barrier Reef in the wet season? Yes. Reef boats run year-round, visibility varies with the weather, and stinger suits are provided from November to May. Our reef trip guide explains how to choose a boat for the conditions.
When can you see whales from Cairns? May to September. Dwarf minke whales gather on the Ribbon Reefs roughly May to July with in-water encounters peaking June and July, and humpbacks migrate past between May and September.
When is cyclone season in Cairns? The Bureau of Meteorology’s official tropical cyclone season runs from 1 November to 30 April. Our cyclone page has the official advice and the live sources.
Header photo: Katie Purling. Courtesy of Tourism and Events Queensland.
