Good Afternoon
A casual, short version used for 'hello' at any time of day (morning, afternoon, or evening). It's friendly and very common.
A more formal or emphatic way to say 'Good afternoon,' similar to 'A very good afternoon to you.'
Good afternoon, sir. How can I help you?
Upon entering the store, I said: 'Good afternoon!'
Hello/Good afternoon! Is Ana in the office?
A very good afternoon to everyone. Thank you for coming.
Universally understood. 'Buenas tardes' is typically used from 12 PM (noon) until sunset, around 6 or 7 PM. After that, you switch to 'Buenas noches'.
The timing is different. 'Buenas tardes' often starts later, after the main midday meal (around 2 or 3 PM), and can last until 8 or 9 PM, when it gets dark.
Follows the general Latin American rule. 'Buenas tardes' begins at 12 PM.
Usage is standard. The greeting is used from noon until early evening.
The phrase 'Buenas tardes' is the same, but the general greeting '¡Buenas!' is extremely common here as a standalone hello for any time of day.
Saying 'Bueno tardes' or 'Buena tardes'. — The correct phrase is 'Buenas tardes'. The word 'tardes' (afternoons) is a feminine and plural noun, so the adjective 'bueno' must also be feminine and plural: 'buenas'.
Using it at the wrong time of day. — In Latin America, the switch from 'Buenos días' to 'Buenas tardes' happens right at 12 PM (noon). Using 'Buenos días' at 1 PM is a common error for learners.
Confusing it with 'goodbye'. — 'Buenas tardes' is primarily a greeting, like 'hello'. While you might say it when leaving work in the afternoon, it's not a general-purpose 'goodbye'. Use 'adiós' or 'hasta luego' for that.