In December, the sun doesn’t set in Auckland until after 8.30pm. Add late-night Christmas trading, and most people who walk past your window this season will see it in daylight.
Daylight is where most window lighting falls apart. A display that looks brilliant when you set it up at 9pm can almost vanish at midday. Here’s why, and what we do about it.
Why Your Window Disappears During The Day
Glass reflects. When the street is brighter than the inside of your window, the reflection wins, and passers-by see themselves, the parked cars and the building across the road instead of your products.
The numbers explain it. An overcast day outside sits somewhere above 10,000 lux, and full sun is many times that. A well-lit shop floor might reach 500 lux.
You won’t beat the sun. The goal is to narrow the gap enough for the display to read through the reflection.
How Bright Does A Shop Window Need To Be?
For a street-facing window, we aim for 2,000 to 3,000 lux on the hero products during the day, and more where direct sun hits the glass. After dark, 500 to 1,000 lux is usually plenty.
Contrast inside the window matters as much as overall brightness. The feature piece should sit three to five times brighter than everything around it. Light the whole window evenly and nothing stands out, day or night.
North-Facing Windows Need The Most Work
We’re in the Southern Hemisphere, so north-facing shopfronts take the most sun and give you the hardest job. A veranda helps a great deal, and it’s one reason windows on streets with continuous verandas tend to perform better.
A south-facing window never gets direct sun, so moderate output goes a long way. A north-facing window with no veranda needs your highest output fittings, careful placement, and a realistic expectation that there will be some reflection around the middle of the day.
Dark Empty Spaces Turn Into Mirrors
This is the tip that changes the most windows we look at. Any dark, unlit area behind the glass acts like a mirror, because there’s nothing behind it to compete with the reflection.
Moody black backdrops look striking at night and go reflective by day. A lit rear panel or a light-coloured backdrop fills those voids with light and cuts the mirror effect sharply. A backlit panel built with LED sign modules works well here, and it can double as a branded graphic.
Hide The Light Source And Aim It At The Product
Every visible bright point inside the window reflects off the back of the glass. Mount fittings along the top and sides of the window frame, angled towards the product and away from both the glass and the footpath.
Recessed or angled aluminium LED profiles keep the light source out of sight and put the output where it’s needed. Vertical runs down the sides of the window light the front faces of mannequins and products, which top-down lighting alone leaves in shadow.
Choose A Colour Temperature That Holds Up Against Daylight
Daylight sits around 5,500 to 6,500K. A warm 2700K or 3000K display that feels cosy at night can look orange next to it at midday.
For most windows, 4000K holds up well in daylight and still looks welcoming after dark. If the look of your brand depends on warmth, a tunable white strip lets you run cooler through the day and warmer in the evening. Our guide to choosing the right colour temperature for retail and display lighting covers the choice in more depth.
Neon Signs Need Help In Direct Sun
LED neon flex is one of the strongest night-time tools a window has. In direct sun, it fades into the background.
Mount it on a dark acrylic panel rather than straight onto the glass. Here, a dark background works in your favour because the neon provides the light. Position it where the veranda or window frame shades it for most of the day.
Set It Up For Day And Night
Output that fights the midday sun is far too much at 10pm. It creates glare on the footpath, wastes power, and makes the display look harsh.
Put the window on a timer or daylight sensor so it runs at full output by day and dims down in the evening. Our LED sensors and control gear handle this automatically, so nobody has to remember to adjust it at closing time.
Test It From Across The Street
Before you sign off the display, cross the road at 11am and take a photo on your phone. Do the same at 7pm. The daytime photo will show every reflection, every dark void and every exposed light point more honestly than standing in front of the glass.
For Christmas, we’d have the lighting sorted by the end of October so the displays can go in during early November with time to adjust. If your window needs work before late-night trading starts, get in touch and we’ll help you plan the layout and output.
