Focsani's weather is quite unpredictable, with temperatures fluctuating widely throughout the year. In winter, January and February are particularly harsh, with temperatures often plummeting below freezing, while December and March bring milder conditions, albeit still chilly. Spring brings a welcome warmth, with April and May temperatures rising steadily, reaching as high as 30 C in May. Summer is warm to hot, with June, July, and August all experiencing highs of over 33 C, but also some cooler days. Autumn sees a gradual cooling, with September and October temperatures dropping back down towards freezing by November, when the cycle begins again.