Screen time and sleep: what the research actually shows

If you’re scrolling your phone in bed or letting Netflix auto-play episodes after midnight, you’re not alone—and it’s making a difference to how Adelaide sleeps. Recent research confirms that high nightly screen use correlates with poorer sleep quality, but local initiatives are working to help South Australians reclaim their shut-eye.

The question of screen time and rest is pressing, with Australians spending an average of six hours online daily (Digital Australia 2025). Here in Adelaide, the blend of increased remote work, later bedtimes, and mobile streaming means screen use now eats into hours once filled by reading or quiet preparation for sleep. Parents at Norwood Morialta and teachers at Glenunga International tell The Daily Adelaide they regularly field questions about teens’ night-time gaming. Meanwhile, adults in Parkside and Wayville admit to answering emails or TikTok messages well past 11pm.

Adelaide in the Glow: A Closer Look

Walk past Adelaide Central Market any given Friday evening and you’ll spot teenagers photographing their dinner, adults FaceTiming or catching up on Instagram. Smartphone glow is especially prominent around events like the Botanic Gardens parkrun, where fitness apps mix with social media sharing. Even Glenelg beach’s twilight yoga sessions now feature guides reminding participants to put devices away before sleep. Local wellness group SleepWell South Australia, based on Wakefield Street, runs short courses teaching digital wind-down tips for city workers and young families.

Research from Flinders University’s Sleep Health Clinic on Sturt Road provides concrete numbers. Their recent 2025 survey of 1,100 Adelaide adults and teens showed those with three or more hours of evening screen exposure averaged 38 minutes less sleep per night and reported 42% higher rates of next-day fatigue. National figures from the Sleep Health Foundation place the economic cost of inadequate sleep to Australia at nearly $14 billion annually. For families, a restless night can mean extra coffees at Lucia’s Café or grumpy car rides up Magill Road—and for students, it’s linked to poorer concentration at schools like Adelaide High.

Small Shifts, Big Difference

With phones unlikely to vanish from bedrooms, local programs are leaning into practical solutions. SleepWell’s coordinator recommends a 30-minute tech-free wind-down, using Parkway Books instead of screens or swapping YouTube with story podcasts at half volume. Several Unley Road cafés now offer phone lockers, hoping to inspire conversation (and a rest from blue light) in the couple of hours before closing. The Botanic Gardens parkrun organisers have begun distributing print-outs of breathing exercises, a nod to restoring calm without devices.

For South Australians who worry about sleep and screens, the main advice remains: small changes can add up. Try setting a phone curfew and keep it out of the bedroom, or take a post-dinner walk along Linear Park trails rather than on a tablet. Anyone with persistent insomnia should consult a local GP or specialist. For the rest of us, powering down earlier just might help Adelaide wake up fresher—no filter needed.