Siraha's climate is characterized by a gradual warming trend throughout the year, with distinct seasonal patterns. During winter months of January and December, temperatures are mild, ranging from 9-28°C, with an average high of around 20-24°C. As spring approaches in March and April, temperatures rise sharply, reaching averages of 26-30°C. Summer months of May to July see temperatures stabilize at a comfortable range of 25-36°C, while autumn brings slightly cooler conditions in November, averaging around 23°C. The temperature fluctuations are relatively minimal during winter and summer periods, but spring and autumn seasons exhibit more significant variations.