No

Why? Because you should be inside at home! #StayHome

But if you absolutely had to go out to get groceries, medication or other essential travel, Yes, you do need a jacket.

Why? Because it's pretty chilly.

Based on the weather in Ribeirao Preto - Conquista, Ribeirão Preto - State of São Paulo, Brazil as of May 25, 2020 10:23am local time.