The best time to visit Dehradun is during the months of March to June and October to December. During these periods, the weather is pleasant, making it ideal for sightseeing and outdoor activities. The summer months (March to June) offer mild temperatures, while the autumn months (October to December) provide clear skies and cooler weather, perfect for exploring the scenic beauty of the region. Monsoon season (July to September) brings heavy rainfall, which can hinder travel plans, so it is generally avoided by tourists.