UK workers could lose 1.5 days of productivity this week as colder, darker autumn weather sets in

With daylight hours shrinking and a chill settling across the country, experts are warning that UK workers could be up to 30% less productive this week, the equivalent of losing nearly one and a half workdays.

And with many workplaces still not equipped for the colder months, from draughty windows to dim lighting, this drop in comfort could quietly cost businesses thousands.

Hannah Prescott, Interior Designer at Diamond Interiors has explained how cooler temperatures and darker days affect focus and wellbeing, and to share simple ways to stay productive this autumn.

With London, Manchester, Birmingham and Glasgow all experiencing a sudden shift in daylight and temperature, employees in these cities may feel the effects most.

Hannah explains, “Comfort isn’t a luxury in the workplace; it’s a psychological and physiological necessity for sustained productivity and wellbeing. When we feel cold or sit in gloomy light, our bodies enter a mild state of stress. Instead of devoting mental energy to problem-solving and creative work, the brain is busy trying to keep us warm and alert.”

How to stay productive

According to Hannah, “People are more likely to interpret ambiguous interactions negatively when they’re physically uncomfortable, so clarity matters. During the colder, darker months, keep communications simple, explicit and kind, as it reduces friction when everyone’s a bit weary.”

“When temperatures drop, people can experience stiffness, reduced dexterity, headaches and mental fatigue. Low light adds sleepiness and reduced focus to the mix,” says Hannah. “Layer up, and don’t be shy about lap blankets or thermal socks at your desk. Small comforts make a big difference to focus and energy levels.”

“Light is fuel for the brain,” adds Hannah. “Position desks near windows where possible, open blinds fully, and use daylight-balanced task lamps. Even a short walk in natural light during your break can help reset alertness.”

“Warmth equals bandwidth,” continues Hannah. “Seal draughts, close unused rooms and use zoned heating where you can. A warm drink isn’t just comforting; holding warmth in the hands can improve fine motor control when typing feels clumsy.”

“To counter the effects of shorter days, try to keep a consistent bedtime, reduce screen use in the evening and complete your most demanding work in the late morning, when body temperature and focus are naturally higher,” says Hannah. “If your role allows, start slightly later to make the most of daylight.”

“Finally,” notes Hannah, “micro-movement matters. Stand for calls, take the stairs or do a short stretch every hour. Gentle movement warms the body, boosts circulation and clears the mental fog that colder, dimmer conditions can create.”

Quick autumn wins for offices

• Turn up the task light: Use desk lamps with daylight bulbs at individual workstations.

• Target the temperature: Keep a steady, comfortable range and avoid cold spots near doors or windows.

• Block draughts: Simple seals and door sweeps can make a noticeable difference.

• Create warm-up zones: Set up a cosy breakout area with soft seating and warm lighting.

• Move the meetings: Book brighter rooms in the late morning when alertness peaks.

• Communicate clearly: Keep instructions concise and written down to reduce misunderstandings.

• Encourage breaks outside: Exposure to daylight naturally boosts energy and mood.

Hannah concludes, “When teams are comfortable and well-lit, they think better, collaborate better and feel better. Small environmental tweaks such as warmth at the hands and feet, brighter task lighting and fewer draughts can help businesses stay productive and positive as autumn sets in.”

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Diamond Interiors is a leading provider of commercial workspace solutions. They work with businesses of all shapes and sizes that want to refurbish their existing offices or move to new premises.