Biratnagar experiences a subtropical climate with distinct seasonal variations. In winter, from December to February, temperatures range from around 7-29°C, with averages in the mid-teens to early twenties. As spring arrives in March and April, temperatures soar to highs of up to 38°C, establishing a warm and pleasant atmosphere. Summer months, May to September, bring relatively consistent temperatures between 20-36°C, although July is slightly cooler. Autumn brings a slight dip in temperature from October to November, with highs ranging from 11-31°C before the onset of winter once again.