On Sunday the number of thefts is set to soar.
That's according to figures from Co-op Insurance, which analysed claims data from 2018 and found a 37% surge in opportunistic thefts after the clocks went forward.
Ian Kershaw, head of claims at Co-op Insurance, said: "What we're seeing during this time is a trend of home-owners relaxing their home security and opportunist thieves striking."
Opportunistic thefts - where entry wasn't forced - made up a third (33%) of claims after the clocks went forward last year, compared with a quarter (24%) in the gloomier winter months when burglars often force entry under cover of darkness.
Co-op Insurance said opportunistic crimes can happen when windows and doors are left open as temperatures increase, or when items, such as bikes or gardening equipment, are left outside.
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Claims data also showed one case in nine (11%) was a "distraction" theft - for example thieves posing as builders and engineers to gain access to a property.
The report said it is important to look out for vulnerable neighbours.
John Hayward-Cripps, chief executive officer of the Neighbourhood Watch Network, said: "Our advice is if people aren't sure who is at the door, don't open it.
"Most genuine callers will have a pre-arranged appointment.
"Also, if you see a neighbour's home where it seems a window has been left open, a back gate or a shed left unlocked for example, check on them and let them know."
Staying safe
Here are Co-op Insurance's home security tips:
- Remain vigilant and keep homes secure during the lighter, summer months.
- Keep windows and doors locked.
- Where possible, invest in a CCTV system.
- Check on vulnerable neighbours.
- Do not post your location on social media platforms.
- Set your home burglar alarm.
- Ensure outbuildings and sheds are locked.
- Do not leave valuable items on display.
- Do not leave car keys within reach of a letterbox.
