Rumtek basically has a pleasant and moderate climate throughout the year. The best tine to visit Rumtek is around October during the early winters.
The summers here are generally pleasant with the temperatures falling between 28°C and 10°C. The summer season starts in March and extends till the month of June.
The monsoon season in Rumtek experiences heavy rainfall by the South-West Monsoon. The temperature during this season is mild. July marks the beginning of the monsoon season and continues till September. This is ideally not the right time to visit Rumtek.
Winter seasons at Rumtek are from the month of October to February. The temperature ranges from 16°C to -5°C. Tourists flock to this place during the beginning of the winter season. It is advised that you carry winter clothes to keep yourself warm, especially during nights.