good morning

"Chào buổi sáng" is the standard way to greet someone in the morning. It functions as a polite and friendly way to acknowledge the start of a new day, similar to the English "good morning." It is used widely in both formal and informal settings. While "chào" is the general word for "hello," adding "buổi sáng" specifically anchors the greeting to the early part of the day. It is common to add a pronoun after "chào" (such as "chào anh," "chào chị") to make the greeting more personal and respectful based on the age or social status of the person you are addressing.
In conversation
Greeting a colleague at the office
Chào buổi sáng, anh Nam!
Good morning, Nam!
Chào buổi sáng! Anh đã uống cà phê chưa?
Good morning! Have you had coffee yet?
Adding a name or title after the greeting is standard etiquette in Vietnamese workplaces.
Messaging a friend
Chào buổi sáng nhé!
Good morning!
Chào buổi sáng! Hôm nay đi làm sớm thế?
Good morning! Why are you going to work so early today?
The particle 'nhé' adds a friendly, soft tone to the greeting.
Examples
Chào buổi sáng!
Good morning!
Chào buổi sáng, mẹ yêu của con.
Good morning, my dear mother.
Chào buổi sáng mọi người, chúc mọi người một ngày làm việc hiệu quả.
Good morning everyone, I wish you all an effective workday.