Paro Festival is one of the biggest and popular festivals in Bhutan. As you embark on this festival trip during the colorful spring season in Bhutan, you will see several flowers in bloom including different types of Rhododendrons, Magnolia, Primula etc. The weather in April is really pleasant with mostly clear sky during the day, and the temperature too is moderate at night or in the morning. It’s one of the best times to travel through Bhutan.