Karlovac experiences a continental climate with distinct seasonal variations. Winters are cool and sometimes chilly, with temperatures often below freezing, especially in January and December. Spring brings mild temperatures, gradually warming up towards summer, with April being the warmest month so far. Summer months, June to August, are warm to hot, with July being the peak temperature month, while September marks a gentle cooling trend back into autumn. Autumn is characterized by moderate temperatures, similar to spring, before winter's chill returns.