Why Are There So Many Flies in Australia?
If you've ever done the "Aussie salute" — the involuntary hand-wave that keeps flies off your face — you already know the answer isn't "there are a few flies about." It's that Australia has some of the most relentless bush flies on the planet, and there are some very good (and very Australian) reasons why.
The Short Answer
Australia's warm, dry climate and huge livestock and native animal population create ideal breeding conditions for bush flies (Musca vetustissima) almost year-round. Flies lay eggs in dung — cattle, sheep, kangaroo, you name it — and with an enormous amount of livestock across the country, that's an enormous amount of fly nursery. Add in warm temperatures that speed up their breeding cycle, and you get numbers that can feel biblical by summer.
Why They're So Interested in Your Face
Bush flies aren't after your lunch — they're after moisture and protein, and your eyes, nose, mouth and any cuts or sweat on your skin are exactly what they're chasing. It's not personal. It's just biology, and it's relentless from spring through to the end of summer, especially inland and in farming regions.
Where It's Worst
Fly numbers are highest in rural and inland areas — farms, sheep and cattle stations, the outback, and anywhere livestock or native animals are common. Coastal and metro areas get a reprieve thanks to sea breezes and less livestock, but anyone travelling inland, camping, fishing, or working on the land knows the flies show up in force from around September through to April.
Sprays, Swatting, and Why They Don't Really Work
Chemical repellents wear off in the heat, sweat washes them away, and swatting just means you spend your whole day fighting flies instead of enjoying being outside. None of it solves the actual problem — flies reaching your face.
The Actual Fix: A Physical Barrier
The only genuinely reliable way to keep flies off your face is a physical barrier — a fine mesh net that sits away from your skin. That's the entire idea behind our fly net hats: a breathable, UV50+ wide-brim hat with a fitted fly net, so you get sun protection and insect protection in one hit, with no sprays or chemicals needed.
More Than Just a Hat
Every Dreamtimez fly net hat features authentic Indigenous artwork, licensed directly from the artist. Ongoing royalties are paid to the artist for every hat sold — not a one-off payment — and part of the proceeds from every hat also go to the Royal Flying Doctor Service. You're not just solving your fly problem — you're supporting an Indigenous artist and a cause that keeps outback Australia connected to healthcare.
Frequently Asked Questions
Why does Australia have so many flies?
Warm weather, a large livestock and native animal population, and abundant dung for breeding all combine to create ideal conditions for bush flies, particularly from spring through to the end of summer.
Are flies native to Australia?
Yes — the common bush fly (Musca vetustissima) is native to Australia, and its population boomed alongside the introduction of livestock, which provided abundant dung for breeding.
What time of year are flies worst in Australia?
Bush flies are most active from spring through to the end of summer (roughly September to April), and worst in warm, dry, inland and rural regions.
What actually keeps flies off your face?
A physical barrier, like a fine mesh fly net, is the most reliable method — unlike sprays, it doesn't wear off in heat or sweat. A fly net hat combines this with UV50+ sun protection in one piece of gear.