Blackpill Lido was transformed into a sea of bodies on Tuesday lunchtime as hundreds turned out to cool off in the sun.
With the summer holidays in full swing, families took advantage of temperatures hitting 25C to take a dip in Swansea 's outdoor water park.
The attraction, which boasts a paddling pool, children's play area and climbing rock, was rammed with visitors.
Sam, a worker at the site's Junction Cafe, said: "It just about chaos here.
"We haven't seen it this busy this year. This is particularly busy."
Sam said there were about 200 people taking a dip there at the height of the day.
The good news for the lido comes just over a month after it was forced to close after being targeted by vandals.
In Verdi's at Mumbles it was a similar scene.
The cafe said there had been plenty of people coming in and out throughout the day, saying it had been pretty busy since the weekend.
At the Surfside Cafe in Langland business was doing really well.
Tips on keeping your children cool in the heat
The beach was incredibly busy, with hundreds of people enjoying a day out to the coast.
The cafe's takeaway section was doing particularly well, with chips, hot dogs and burgers flying off the shelves.
The customers' favourite, even on a scorching day, was bacon buns, according to worker Sarah.
But sun lovers need to make the most of the hot weather - the country's set to see thunderstorms tonight.
Issued for Tuesday evening, it's expected to follow the hottest day of the year so far, with the thermometer set to hit 32C.
The weather warning is expected to be over by 9am tomorrow.
