Itahari, Nepal experiences a subtropical climate with distinct seasonal variations. During winter months of January and December, temperatures range between 7-25°C, with average highs around 16-19°C. As spring approaches in March, April, and May, temperatures rise to an average high of 24-28°C, with occasional peaks above 35°C. Summer months of June to September bring relatively stable temperatures around 27-28°C, with minimal fluctuations. Autumn months of October and November see a slight drop in temperature, averaging highs of 22-26°C before the onset of winter once again.