The easy bedroom fix to keep the sun from waking you up at 5 am this month – this is the trick experts use to protect their sleep in summer

A bedroom with a bed in front of a large sash window. The bed has white and orange pillows and a white duvet cover.

If you're feeling tired this month, you're not alone. Not only has Britain been bathed in a heatwave – which tends to mean hot and humid nights and a restless sleep – but mornings are getting lighter too.

As May ends and we head towards the summer solstice on June 21st – the day with the most hours of daylight and the shortest night of the whole year – the sun rises before 5 am in most parts of Britain.