People could underestimate heat, which could cause dehydration and sunburn, Met Office warns

People urged to avoid busy beaches over heatwave weekend
Visitors to the south west of England are being urged to avoid busy beaches over the weekend.
Crowds are expected to head to the coast as temperatures are forecast to hit the mid to high 20s.
The RNLI has called on beachgoers to follow water safety advice and adhere to social distancing.
Last week, the charity carried out 30 rescues in one day on just one beach in Cornwall.
The incidents mainly involved bathers and body boarders caught in rip currents, going out of their depth and being cut off by the incoming tide.
Kitty Norman, water safety delivery support at the RNLI, said: “The beaches across the whole of the South West are extremely busy at the moment with both locals who are holidaying at home this year and an influx of visitors to the region.
“The sheer volume of people making social distancing tricky is one thing to be conscious of before planning your trip to the beach.
“You might choose to visit the beach at a quieter time of day, or choose a beach with more space, where you can still bathe between the flagged area, but spread out further when setting up camp for the day.
“If you arrive at the beach and it is simply too crowded, consider moving on and spending your day elsewhere.
“Checking the tide times is advised – as the tide comes in, it reduces the available space for people to spread out and leads to beaches getting more crowded.”
She also asked people to respect a two-metre distance when approaching lifeguards.