Parts of Britain are set to swelter in the second heatwave of the summer this weekend as temperatures soar to over 30C in some areas. More than 120 areas are forecast to see temperatures high enough to qualify as heatwave conditions, as defined by the Met Office. You can see if your local area is about to see a heatwave by using our interactive map. Forecasters say it is possible that the UK could see the hottest June day on record over the next few days. Temperatures are expected to climb over 25C in many areas of the country at some point in the next few days, with the hottest conditions expected on Monday.
However, in much of Norfolk and parts of Essex, there will be heatwave conditions for the next five days. An official heatwave is declared by the Met Office when temperatures exceed a specific threshold for three consecutive days. However, the threshold varies in different areas of the country. In London and parts of the South East, the temperature has to go over 28C for three days in a row for those areas to be in heatwave conditions. For the rest of the South East, the threshold is lower, at 27C.
And in the South West of England, most of Wales, Northern England, Northern Ireland and Wales, it is counted as a heatwave if the temperature goes over 25C for three consecutive days. The Met Office definitions of heatwave threshold can be seen here.
Based on forecast conditions published by OpenWeather for the next five days, there are 129 local areas which are now expected to experience heatwave conditions.
Interactive map
You can see if your area is forecast to experience heatwave conditions by typing your postcode into this interactive map:
The June UK temperature record stands at 35.6C, recorded both at Southampton Mayflower Park on June 28 1976 and at Camden Square, north London, on June 29 1957.
Met Office spokesman Graham Madge said: “There is a chance that we could meet or exceed that threshold set in 1976 and 1957. It is around a 20 per cent chance we could see weather observing stations exceed that – it is possible, not probable.”
A second amber heat health alert in two weeks has been issued today. The alert, which covers London, the East Midlands, South East, South West and East of England, started at midday on Friday and will last until 6pm on Tuesday.
Full list of areas set for heatwave
Here is a full list of areas which are forecast to see temperatures which would count as an official heatwave, under the Met Office definitions.
Areas that are not listed may still see very hot temperatures in the next five days but are not currently forecast to exceed the local heatwave threshold for three days in a row.