With temperatures set to reach highs of 26C (79F) over the bank holiday weekend, councils with responsibility for beaches and beauty spots are warning people to keep away.
Pictures of crowds flocking to beaches in Brighton and Southend in recent days have raised concerns over social distancing.
Following the easing of some lockdown measures last week, there are no restrictions on how far people can travel to get to the countryside, National Parks and beaches in England.
The Met Office is forecasting that temperatures could hit 26C (79F) in London on Monday, with coastal areas likely to see highs of around 20C (68F).
Saturday is expected to be the coldest day, before the mercury climbs on Sunday and Monday, with wall-to-wall sunshine in the west and sunny spells in the east.
Councillor Carmen Appich, from Brighton & Hove City Council, urged anyone thinking of travelling to the city “to consider very carefully how their journey will impact on others”.
If you’re thinking of visiting the coast in Devon this bank holiday, please #thinktwice about the distance you’re travelling & if you could stay closer to home? Overnight stays are not permitted & you must always keep to social distancing to protect local communities.#WeAreDevonpic.twitter.com/pP1lhfhyPh
Hastings Borough Council said the area is “closed to visitors from outside the town”.
Holidaymakers are being told that the “clear advice” from the Isle of Wight Council is they should stay away.
People are similarly being advised not to visit Blackpool and Morecambe Bay to help prevent the spread of COVID-19.
After pictures showed crowds at Southend in Essex earlier this week, the council’s leader said the easing of lockdown restrictions has put the council in a “very difficult position”.
Councillor Ian Gilbert said on Friday: “For many weeks we ran a successful Don’t Visit Southend campaign, but the government’s lifting of restrictions have put us in a very difficult position as day trips and sunbathing are allowed, and takeaways can be open for business.”
“Wish you weren’t here!” is Sefton Council in Merseyside’s take on the picture postcard message it is sending to people thinking of travelling to its beaches from across the North West.
It may be tempting to go to the beach when the weather is nice but during #COVID19 we would urge people to stay away and keep yourself and your community safe pic.twitter.com/NGcMLk0Bnu
The National Trust is urging people across England to stay close to home and explore local green spaces and countryside this weekend, as part of the collective effort to make easing of the lockdown work.
Speaking at the daily Downing Street press conference, Home Secretary Priti Patel said: “It is inevitable that obviously the public will be out and about a lot more, but of course our message is clear to the public – yes, enjoy being outdoors, we have encouraged people to go out, but we have put a very clear caveat around that.
“This is all conditional. You can enjoy being outdoors in the sun providing you are following the advice and we continue to stop and contain the spread of the infection.”
Meanwhile, Secretary of State for Wales Simon Hart said the different approaches taken by England and Wales would “increase the likelihood” of people breaking lockdown rules over the bank holiday weekend.
Asked if he thought people were likely to break the rules, Mr Hart said: “Anything which suggests that there’s a different set of rules one side of the border to the other will increase the likelihood that that is possible, and there have been some examples of people being pulled in when coming into Wales who didn’t realise it was a different regime.”
But the MP for Carmarthen West and South Pembrokeshire said he believed the “vast majority” of people were complying with the lockdown rules in place in Wales.