The busiest time of year for the National Parks is June through September, which is also the hottest time of year. While many adjust their hikes based on the weather, others do not have the time, or are eager to see as much as possible during their trip to the Parks. If you are considering hiking in the heat, it is important to know some of the key tips to keep yourself safe in the hot desert sun. The first and number one thing we could stress is hike with a buddy – but the following are also crucial things to keep in mind.