The Narrows closes when the Virgin River flow rate is over 150 cubic feet per second (CFS) and when the National Weather Service issues a Flash Flood Warning.
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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.
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.
The Narrows and Keyhole CanyonWhile not dangerous on a normal, dry day, they can become deadly in only a matter of seconds if it begins to rain. Flash floods can fill the canyons, washing hikers and debris downstream and making it almost impossible to escape.
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.
Best Time to Hike the NarrowsOctober is a gorgeous time to hike the Narrows. The later you get in the month, the better the fall colors will be and you will share the canyon with just a few other people. But you also have to take into account shorter days, colder temperatures, and the reduced Zion shuttle schedule.
The Narrows is a popular hike through the knee-deep Virgin River. Due to cold water temperature and high water levels, the trail is closed in winter and spring. The best time to hike The Narrows is from late May to October, but watch out for summer thunderstorms that can cause deathly flash floods.
In the early spring and late fall months, neoprene socks, pants or bib overalls, or a wetsuit may be necessary to hike in the river. Average spring and fall water temperatures range from 41° to 53° Fahrenheit (5° to 12° Celsius). Winter: A neoprene wetsuit or dry suit with warm layers may be needed.
You cannot safely drink the water from the river on the Narrows hike in Zion. The Virgin River experiences blooms of cyanobacteria and cyanotoxins— really dangerous toxins in novice terms.
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).
A hike through The Narrows requires hiking in the Virgin River. You must get your feet wet since there is no trail. Most people choose to start their hike from the Temple of Sinawava via the Riverside Walk and then walk upstream before turning around and hiking back down to the Temple of Sinawava.
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.
At the Temple of Sinawava shuttle stop, there are water fill stations and bathrooms. Make sure to use the restrooms here. If you do need to go pee in The Narrows it is better to do it in the water than on the shore. If you need to go #2 while in The Narrows you MUST pack it out.
The Narrows and Keyhole CanyonWhile not dangerous on a normal, dry day, they can become deadly in only a matter of seconds if it begins to rain. Flash floods can fill the canyons, washing hikers and debris downstream and making it almost impossible to escape.
If you are visiting Zion National Park in the summer with kids who love to hike and who love water then The Narrows is a hike that should be at the very top of your list. Such a great way to beat the intense summer heat, The Narrows is an amazing slot canyon hike that will take your breath away around every turn.