Sivasagar features a humid subtropical climate (Köppen climate classification *Cwa*), heavily influenced by the Southwest Monsoon.
* **Summer (March to May):** Warm and highly humid, with temperatures ranging from 25°C to 35°C (77°F to 95°F). * **Monsoon (June to September):** The region experiences heavy, continuous rainfall. The high precipitation keeps the region exceptionally green but can occasionally lead to localized flooding. * **Winter (October to February):** Winters are mild, cool, and generally dry. Temperatures typically range between 10°C and 22°C (50°F to 72°F), with frequent morning fog.
The **best time to visit** is from October to March, when the weather is cool and pleasant, making it ideal for exploring the historical monuments.

