In Sep, Posadas typically sees ~25°C daytime highs and 13 rainy days.
Best time to visit Posadas — climate
About Posadas
Posadas is a pleasant, small, accessible city in Misiones province in the Mesopotamia region of Argentina. It makes a nice break on the long ride between Iguaçu Falls and Buenos Aires.
Flight prices are real fares travellers found in the last 48 hours, refreshed daily — the booking site confirms the final price. Train, bus and ferry fares are shown on the operators' booking sites. Weather data by Open-Meteo; exchange rates: ECB reference. Data updated 2026-09-03. Some links earn Stayonomy a commission at no cost to you.