What the research shows
The clearest evidence on this comes from studies of daylight saving time, which effectively run a natural experiment on ambient light each year without changing anything else about a given city or population.
Economists Jennifer Doleac and Nicholas Sanders analyzed crime patterns around the time change and found that robbery rates increase by roughly 7% overall when clocks “fall back” in November, driven mostly by a striking 27% jump in robberies specifically during the evening hour that shifts from light to dark. Interestingly, their research found no equivalent effect in the early morning hours that also gain darkness, which lines up with a simple observation: most burglaries and street crimes happen when people are out and about, not when they’re still asleep.
A separate 2015 Brookings Institution analysis reached a similar conclusion from a different angle, estimating that eliminating the twice-yearly clock change and keeping evening daylight year-round could reduce robberies by as much as 27% directly, simply through the deterrent effect of visibility. The researchers’ explanation is intuitive: offenders know they’re more likely to be recognized and caught if they’re clearly visible, so more daylight during the hours people are commuting, walking, or out running errands translates into less opportunity.
It’s worth being upfront that this research is largely U.S.-based. Canada doesn’t currently have an equivalent large-scale study isolating the same effect using Canadian crime data. But the underlying logic, that visibility affects opportunity, and opportunity affects behaviour, isn’t specific to one country or one reporting system. It’s a reasonably safe assumption that the same basic dynamic applies here.
What this means practically, not fearfully
This isn’t a reason to feel unsafe walking to your car in October, or to avoid being outside once the sun sets earlier. The vast majority of evenings, for the vast majority of people, are perfectly uneventful regardless of what time it gets dark. It is, however, a reasonable prompt to make a few small, genuinely low-effort adjustments:
- Exterior lighting on timers, so entry points and walkways aren’t sitting in the dark by 6:30pm just because nobody remembered to flip a switch.
- Motion-activated lights near driveways, side entrances, and anywhere a person might approach your home without walking past a well-lit front door.
- A quick walk around your property at dusk, once a week or so through the fall, to see what an outside observer would actually see. It’s a five-minute habit that catches burned-out bulbs and overgrown shrubs blocking a light fixture before they become a real gap.
- A look at your daily routine, noticing which parts of your commute or errands now happen in the dark that didn’t a month ago, and adjusting small habits accordingly.
Where monitoring adds the missing piece
Lighting helps, and it’s genuinely one of the most cost-effective deterrents available to any homeowner. But lighting doesn’t watch your property when you’re not looking at it yourself. AI-powered monitoring does that continuously, day or night, and when something looks off, a real local monitoring agent reviews it immediately, not after the fact once the damage is already done.
Prevention. Not just detection. That’s the actual difference between a system that tells you something happened and one that’s working to make sure it doesn’t.
You don’t need to overhaul anything for the change of seasons. You just need a system that adjusts with you, quietly, in the background, the same way it does every other month of the year.
A darker evening shouldn’t mean a less secure home. Talk to a Security ONE consultant for a free home security consultation. We’ll look at your lighting, entry points, and monitoring together, so the season change works with you, not against you.Â