Introduction
Learning how to say your birthday date in Brazilian Portuguese is one of the first practical skills for new learners. This article teaches you the common vocabulary, grammar patterns, and natural phrases used in everyday situations like conversations, forms, messages, and announcements.
Basic components: numbers, months, and ordinals
To say a birthday date you need three basics: the day, the month, and sometimes the year. Start by mastering numbers 1–31, month names, and how Brazilians often say dates out loud. Below are essential words and short examples.
número – number; used when referring to day or year
dia – day
mês – month
ano – year
mês names (Brazilian Portuguese): janeiro, fevereiro, março, abril, maio, junho, julho, agosto, setembro, outubro, novembro, dezembro
Numbers for days: 1–31
Days are usually said as ordinals or cardinal numbers depending on context. In spoken Brazilian Portuguese, people commonly use the definite article plus the cardinal or the ordinal for dates. Learn these patterns with examples.
um (1) — primeiro when using ordinal sense, but spoken as um dia do mês
dois (2)
três (3)
quatro (4)
cinco (5)
dez (10)
quinze (15)
vinte e um (21)
trinta e um (31)
Common ways to say a birthday date
There are a few natural ways Brazilians tell their birthday. Below are the most common expressions with realistic example phrases you can use immediately.
1. Saying day and month only (most common in conversation)
When asked Quando é seu aniversário? people often respond with day and month. The structure is usually Dia de Mês.
Meu aniversário é dia 5 de maio
Explanation: Use dia + cardinal + de + month. This is the most straightforward spoken form.
Meu aniversário é dia 1º de janeiro
Explanation: For the first day people often write 1º but in speech they say primeiro or um. Both are understood.
2. Using ordinals and the definite article
Some speakers use the definite article and an ordinal number: O meu aniversário é no dia primeiro de maio. This is slightly more formal and common in written or clear speech.
O meu aniversário é no dia primeiro de maio
Explanation: no is a contraction of em + o meaning on the day.
3. Writing dates on forms (day/month/year)
On Brazilian forms the standard numeric order is day/month/year. Example formats: 05/05/1990 or 5/5/1990. When reading a form out loud, say dia, mês, ano or read each number sequentially.
05/05/1990 read as cinco de maio de mil novecentos e noventa or cinco de maio de noventa in casual speech
Simple conversational phrases
Below are short dialogues and phrases beginners are likely to hear or use when talking about birthdays.
Quando é seu aniversário?
When is your birthday?
Meu aniversário é dia 12 de agosto.
My birthday is August 12th.
Que dia você faz anos?
What day do you turn years? (less common, but used in informal speech)
Eu faço anos no dia 2 de fevereiro.
I have my birthday on February 2nd.
Including the year and age
If you need to include your birth year or say your age, Brazilian Portuguese has simple patterns.
Eu nasci em 1995.
I was born in 1995.
Tenho 28 anos.
I am 28 years old.
Complete example: Eu nasci no dia 3 de setembro de 1995 e tenho 30 anos.
I was born on September 3, 1995 and I am 30 years old.
Pronunciation tips for numbers and months
Focus on natural Brazilian pronunciation: soft r in mês, nasal vowels in mês and anos, and liaison between numbers and de. Listen and repeat phrases rather than isolated words to get rhythm right.
Mês names: janeiro [ja-NEI-ro], fevereiro [fev-REI-ro], março [MAR-so] (note nasal ã sound), abril [a-BRIL]
Practical examples you might see or use
Here are everyday scenarios with phrases to practice. These are realistic for forms, messages, store loyalty programs, or social conversations.
On a registration form: Data de nascimento: 15/07/1988
Date of birth: 15/07/1988
Answering a friend: Vou fazer aniversário no dia 20 de novembro.
I’m going to have my birthday on November 20th.
On a social media profile: Aniversário: 08 de março
Birthday: March 8
Inviting: A festa será no dia 10 de outubro.
The party will be on October 10th.
Common mistakes and how to avoid them
Beginners often make predictable errors when saying birthdays. Here are the errors and simple corrections.
Mistake: Saying month first as in English You say maio 5.
Correction: Always say day before month in Brazilian Portuguese: dia 5 de maio.
Mistake: Using English-style month abbreviations on spoken forms.
Correction: Spell the month or use numeric day/month format: 05/05 or cinco de maio.
Mistake: Forgetting de between day and month.
Correction: Use dia 4 de julho or simply 4 de julho; including de is natural and correct.
Mistake: Using European-style months or vocabulary.
Correction: Use Brazilian Portuguese month names listed above.
Beginner study tips
Practice combining number + de + month in short sentences. Use flashcards with the date on one side and the Portuguese phrase on the other. Record yourself saying Meu aniversário é dia … and compare with native speakers. When filling forms, always check whether the format is day/month/year.
Create a simple calendar with your friends’ birthdays written in Portuguese. For example: Ana — 7 de março; João — 21 de setembro. Reading a list each day helps naturalize the pattern.
Mini practice exercises
Translate these into Brazilian Portuguese aloud, then check below.
1. My birthday is April 14th.
2. I was born on 02/11/2000.
3. We celebrate his birthday on June 3rd.
Answers:
1. Meu aniversário é dia 14 de abril.
2. Eu nasci em 02/11/2000 or Eu nasci no dia 2 de novembro de 2000.
3. Nós comemoramos o aniversário dele no dia 3 de junho or A festa dele é dia 3 de junho.
Short cultural notes
Brazilian Portuguese speakers typically focus on day and month in casual talk. Birthday parties are culturally significant and dates are shared freely among friends and family. For greetings use Feliz aniversário or Parabéns, but those are celebration phrases rather than date expressions.
Feliz aniversário – Happy birthday
Parabéns – Congratulations; commonly used to wish someone a happy birthday
Useful quick-reference list
Common question: Quando é seu aniversário?
Short answer pattern: Meu aniversário é dia + [number] + de + [month]
Formal: O meu aniversário é no dia + [ordinal or cardinal] + de + [month]
To say age: Tenho + [number] + anos
To say birth year: Eu nasci em + [year]
Conclusion
Mastering how to say your birthday date in Brazilian Portuguese comes down to three small patterns: day + de + month, optionally the year, and the way people phrase their age or birth year. Practice with the sample sentences, use the flashcards and short dialogues here, and soon saying dates will feel natural in everyday conversations and forms.
