It is the most popular time to visit Death Valley. Besides warm and sunny days, the possibility of spring wildflowers is a big attraction. If the previous winter brought rain, the desert can put on an impressive floral display, usually peaking in late March to early April. Check our website for wildflower updates. The Death Valley Dark Sky Festival weekend is also very busy. The spring break season brings crowds to Death Valley between mid-March to late April. Campgrounds and lodging are usually packed at that time, and reservations for this season are typically made months in advance.