Winters in Rijeka are mild, with temperatures ranging from freezing cold to relatively warm, averaging around 6-10°C in January and December. Spring brings gradually increasing warmth, with April and May temperatures often reaching the mid-teens to low twenties Celsius, perfect for blooming flowers and greenery. Summer is hot and sunny, with July and August being the warmest months, frequently seeing highs above 30°C. Autumn is a pleasant transition back to milder weather, with September and October temperatures returning to more moderate levels around 10-20°C. The cold winter months are generally brief, allowing for a long growing season in between.