Is the word chapéus the same in Brazilian and European Portuguese?

Yes

The word "chapéus" is identical in meaning, spelling, and grammar in both Brazilian and Continental Portuguese. The only difference lies in pronunciation. Brazilian Portuguese tends to have more open vowels and a more syllable-timed rhythm, making the "é" sound very clear and bright. Continental Portuguese features vowel reduction, where unstressed vowels are often shortened or "closed," resulting in a more stress-timed rhythm.

Brazilian Portuguese examples:

1. Eu adoro usar chapéus no verão. (I love wearing hats in the summer.)
2. Aqueles chapéus de palha são muito bonitos. (Those straw hats are very beautiful.)
3. Onde você guardou os meus chapéus? (Where did you put my hats?)
4. Ele tem uma coleção de chapéus de cowboy. (He has a collection of cowboy hats.)
5. Esses chapéus são bem legais. (These hats are very cool.)

Continental Portuguese examples:

1. Eu adoro usar chapéus no verão. (I love wearing hats in the summer.)
2. Aqueles chapéus de palha são muito bonitos. (Those straw hats are very beautiful.)
3. Onde é que guardaste os meus chapéus? (Where did you put my hats?)
4. Ele tem uma coleção de chapéus de cowboy. (He has a collection of cowboy hats.)
5. Esses chapéus são muito giros. (These hats are very nice.)