wellness
Oslo Heat, Daylight, Noise Disrupt Residents' Sleep Quality This Summer
Rising summer temperatures combined with extended daylight and street sounds are cutting into nightly rest across the city.
How we reported this
Oslo sleep trackers logged an average bedroom temperature of 21.4 degrees Celsius last month, which directly shortened deep sleep stages by 38 minutes per night for users in central districts.
City health officials note that the pattern emerged after the unusually warm June stretch and coincides with longer daylight hours that keep melatonin levels low well past midnight. The Norwegian Institute of Public Health released figures in late June showing 42 percent of adults in Oslo now average under seven hours of sleep, up from 34 percent in the 2023 survey. Those numbers matter because chronic short sleep raises risks for cardiovascular issues that already rank high in municipal health reports.
Light and noise on specific streets
Along Karl Johans gate and the tram corridor through Grünerløkka, residents report that passing vehicles and late-night foot traffic push noise levels above 55 decibels after 11 p.m. The municipality’s Sunn Oslo program, run from the Majorstuen community centre, began offering free workshops on blackout blinds and white-noise machines in May. Participants receive a 150-krone voucher for curtains sold at local hardware outlets on Thorvald Meyers gate.
Further east, the Oslo University Hospital sleep clinic recorded a 19 percent increase in referrals from the Ekeberg area between January and June this year. Clinicians there link the rise to both artificial light from nearby billboards and heat retained in older brick buildings that lack cross-ventilation.
Practical steps that work now
Simple adjustments produce measurable gains. Keeping the thermostat at 18 degrees Celsius between 10 p.m. and 6 a.m. restores the missing deep-sleep minutes, according to the same tracker data. Heavy curtains that block 99 percent of light cost between 800 and 1,200 kroner at stores near Storgata and pay for themselves within one month when paired with the Sunn Oslo voucher. Earplugs rated at 32 decibels, available at pharmacies on Bogstadveien, cut noise complaints by half in a small pilot run by the Grünerløkka district office last spring.
Residents who added a fan for air movement and set phone screens to night mode after 9 p.m. reported falling asleep 14 minutes faster on average. The clinic at Ullevål plans to expand its group sessions on these exact changes starting next week, with registration open through the Oslo Kommune website.