Bring layers (pack them in a waterproof bag), rent dry pants or a dry suit if the conditions warrant it, and be aware of the signs of hypothermia. Heat Exhaustion: The heat can be relentless during the summers in Zion, even within the Narrows.
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HIGH SUMMER: MAY 15 - SEPTEMBER 15High summer is the best time to through-hike the Narrows. Zion National Park can be downright sweltering in the summer months, so escaping into the deep, twisty and cool river gorge makes for a delightful escape from the heat.
Layers: The temperatures in the Zion Narrows can be much cooler than the rest of the park. In fact, we were surprisingly cold during most of the hike. Your bottoms are definitely going to get wet so we recommend wearing shorts or a bathing suit on the bottom.
In general, most adults with a moderate fitness level will be fine and enjoy this activity. So if you're a beginner wanting to do the Zion Narrows day hike, don't worry! It can seem intimidating, but so long as you don't have difficulties getting around on a typical hike, you will be fine.
It is also scorching, with temps reaching 110ºF during July and August. My best advice for hiking Zion in the summer is to start before sunrise, take lots of water, and choose hikes that run along a stream or river. Starting your hike later in the day is also a great option.
Most people hike The Narrows in the summer and early fall when the water tends to be at its warmest and the water level drops. However, life-threatening flash floods are possible at any time and are common during the monsoon season.
If you have a spare camera, you might consider bringing it along instead of your main one. Although I brought my main camera, there were a few times that I would have preferred a backup instead. In terms of equipment, the most important gear to bring is a wide-angle lens.
The Narrows is much cooler than Zion Canyon. Pack gear in waterproof bags. Use the restroom at the Riverside Trailhead before hiking. There are no toilets in the Narrows.
Best time of day to hike the NarrowsIf you are only looking to do a small portion of the Narrows, then we recommend visiting in the late afternoon when it has warmed up a bit. The big rush tends to be in the morning as the people who want to hike the furthest start early.
When Is the Best Time to Hike the Narrows? Start early in the morning to watch as the canyon walls light up with the sunrise. We started our hike around 9 AM and the river was mostly shaded thanks to the height of the canyon walls.
Essential gear to hike the Zion Narrows. In preparation for this hike, many people decide to rent specialized gear like canyoneering shoes, neoprene socks, walking sticks, waterproof pants, and even full zip-up dry suits.
DRINKING WATER: Virgin River water in the Zion Narrows is not safe to drink untreated. Either carry all the water you will need or bring a water filter (removes bacteria and protozoan cysts like Giardia from contaminated water) or purifier (a purifier also removes viruses).