Good night in Welsh
Nos da
In Welsh, the phrase to know first is "Nos da!" (Good night!). The others are below, each with a note on when to use it.
Good night in Welsh is Nos da. Below are the greeting, a warmer version for someone close, and good evening. Each phrase comes with a short note on when to use it.
Greetings
Nos da!
Good night!
The usual form.
Nos da, cariad.
Good night, love.
For a partner or a child.
Noswaith dda!
Good evening!
For the evening rather than bedtime.
About the words
Geiriadur Prifysgol Cymru gives nos da as "good night, good evening", recorded from the 14th-century poetry of Dafydd ap Gwilym and still in everyday speech. Nos means night. For the evening itself Welsh also uses noswaith dda.
Common questions
How do you say good night in Welsh?
Nos da!
Good night in the other Celtic languages
Further reading
Go beyond the phrases
blas. teaches Welsh with spaced repetition — vocabulary, mutations, grammar, reading, and conversation. Not just for Good night, but for life. Free to start.
Start learning WelshWelsh phrases for the year ahead
Welsh phrases for everyday occasions
Sources
Every phrase and fact on this page was checked against the sources below. Last checked 2026-10-20.
- Geiriadur Prifysgol Cymru: nos
- Wiktionary, via Kaikki.org
- Wiktionary, via Kaikki.org
- blas. course data
- Wiktionary, via Kaikki.org
Credit: Wiktionary contributors, CC BY-SA 4.0.