Here in Brazil it's very common to have several showers a day. I, for example, take two. The first is when I wake up, before I go to work, and the second is when I get home from work. I wake up at 6.30am and get home at 8pm.
All the Brazilians I knew were shocked when they learned I only took one shower per day. Most of them claimed to take 3 per day. I just chocked it up to their being in a warmer climate.
Not Brazil but my brother lived in a similar climate and showered before work, at lunch (everyone went home at lunch most days), and before bed.
He also had a massive stack of undergarments which included white t-shirts. He would sometimes change shirts more than he showered. For context he had to wear office attire but could wear Bermuda shorts.
Further context, we are swarthy Canadians that sweat when we eat a sandwich but he's was really thin/fit at the time. Still sweaty.