Gualeguaychu experiences mild winters, with temperatures ranging from -2°C to 26°C in July and August. Spring is warm but not hot, with highs reaching up to 35°C in March and April, while autumn is similar, with temperatures gradually warming up again. Summers are hot, with temperatures frequently exceeding 38°C in January and December, but also occasionally dropping to 10°C at night. Autumn and spring have relatively small temperature ranges, while winters are quite cold.