Winters in Bijeljina are cold and unpredictable, with temperatures often dropping below freezing point but occasionally rising above average. Spring is a time of gradual warming, with temperatures gradually increasing over the months from March to May. Summer brings warmth and heatwaves, with July typically being the hottest month, while August can also be very warm. Autumn is mild and similar to spring in terms of temperature fluctuations, with September and October experiencing pleasant weather before the cold winter returns.