LifestyleMet OfficeThe Met Office is predicting a heatwave next week, with some areas of the UK expected to reach highs of 36C13:39, 21 Jun 2026Britons up and down the country are being advised to keep their windows shut between 9am and 8pm next week, particularly as temperatures begin to climb.‌The Met Office is forecasting another heatwave next week, with certain parts of the UK expected to reach highs of 36C on Wednesday, June 24 and Thursday, June 25.‌A number of amber heat health alerts are also in effect across the country, warning Britons of the impact the heat may have on healthcare and transport.‌Amber heat health alerts have been issued for East of England, London, South East, South West, North West, Midlands and Yorkshire. A Yellow heat health alert has also been issued for the North East of England.All alerts will remain in place until Friday, June 26. As the mercury rises, people will be doing their utmost to keep themselves and their homes cool.Should Britons keep windows and curtains open or closed during a heatwave?According to the government and experts at Which?, the UK's consumer champion, people should keep their windows, curtains and blinds closed between the hours of 9am and 8pm.‌This is especially important when the temperature outside is higher than the temperature inside the room.Keeping windows and blinds that are exposed to direct sunlight shut throughout the day helps rooms remain cooler, acting as a barrier against solar radiation and hot air.Which? also advises people to open their curtains and blinds overnight, after 9pm, if they can tolerate external noise.Article continues belowHow else can I keep my home cool?The government also has a number of additional measures it recommends to Britons looking to keep their homes cool this summer.They said: "Open windows, if it is safe to, when the air feels cooler outside than inside, for example at night, and try to get air flowing through your home, use electric fans if the air temperature is below 35°C, but do not aim the fan directly at your body as this can lead to dehydration."They added: "Turn off lights and electrical equipment that are not in use and go outside if it is cooler outside in the shade."Choose Daily Mirror as a 'Preferred Source' on Google News for quick access to the news you value.‌Met OfficeHeatwave