Humidity in Brazil is really high and that's making it feel like extremely hot at 62.3C in the main city, Rio de Janeiro.
The extremely high temperatures are the highest ever recorded since Alerta Rio began keeping track in 2014.
The heat index measures how hot it feels by taking into account humidity – the actual maximum temperature in the city was 42C.
Because of the very high temperatures, the country is on high alert for health risks related to heat.
At 9.55am local time – or 12.55 GMT – on Sunday, the temperature hit 62.3C in western Rio while people went to the Ipanema and Copacabana beaches.
Authorities have been sharing advice on how to deal with the heat.
The new record beats the previous high of 59.7C, set just months ago in November.
Eduardo Alves de Castro, a beachgoer said: 'It is worrying because we wonder how far this is going, where it’s heading.
‘We are in a very privileged place, here in front of the beach, water, you cool off, but there are people in a much less favourable situation and who are much more impacted by this heatwave.
‘But the worry is that there’s no end to it.’
Photos show the beaches crowded as people search for relief from the stifling heat, and some residents have said there is not enough water to drink or bathe in as the heatwave continues.
Guaratiba, a neighborhood in the west of Rio de Janeiro, often has high temperatures because it's close to the ocean and warm winds hit the area.
The country is still experiencing extreme weather and it's expected to continue next week, according to authorities.
Weather agency MetSul warned: ‘The week will be very risky in the center-south of Brazil due to intense rains and storms.
‘The most worrying system is a very intense cold front that will arrive with heavy rains and possible strong winds.’
