The best time to visit Dehradun is during the pleasant months of March to June and September to November. Spring and early summer (March to June) are ideal for experiencing the city’s natural beauty, with temperatures ranging from 17°C to 35°C. The weather is warm but comfortable, making it perfect for outdoor activities like trekking, sightseeing, and visiting popular spots like Robber’s Cave, Sahastradhara, and the Forest Research Institute. During this time, the hills surrounding Dehradun are lush and vibrant, adding to the charm of the region. The monsoon season (July to August) brings heavy rainfall, which, although it enhances the greenery, can lead to travel disruptions due to slippery roads and landslides. However, if you enjoy a quieter, offbeat travel experience and don’t mind the rain, this could be a peaceful time to visit. Autumn and early winter (September to November) are also great as the weather turns crisp and clear, ideal for nature walks and local exploration. Temperatures range between 13°C to 30°C, creating a refreshing atmosphere without the extreme cold of peak winter. December to February marks winter, with temperatures dropping to as low as 5°C. While it's not too harsh, it may not be ideal for everyone, especially those seeking a more active vacation. Overall, the shoulder seasons offer the best combination of good weather, scenic beauty, and fewer tourists, making them the perfect time to explore the tranquil charm of Dehradun.