In winter, it's essential to have protective clothing to hike the Narrows. The water temperature is just too cold to turn up in shorts and sneakers like you can in summer.
Not really a park for swimming though you can hike in the waters of the Narrows. And there are areas where you maybe don't want to get your head in the water and especially not get it in your nose and mouth due to toxic cyanobacteria.
October 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.
Pee - Whenever possible, pee directly into the flowing water of the river. The smell of your urine, on land, will persist for months. At the very least, carry a ziplock bag to pack out your toilet paper. Water – There is reasonable water for drinking almost every step of The Narrows – literally.
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.
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.
The Narrows is fantastic in September when the temperature is still warm enough to enjoy being in the water. Make sure to check online or at the visitor center for a flash flood advisories, however, because the Narrows is very prone to them during monsoon season.
There are also parts of The Narrows where it's deep enough to swim, but we won't be going that far on this trip. The Narrows is 16 miles long and can take up to 12 hours. However, most people do not go that far.
Best time of day to hike the NarrowsThe big rush tends to be in the morning as the people who want to hike the furthest start early. By the afternoon, the lower sections are quieter and warmer, which makes for a more enjoyable hike.
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.
Seeing an American Black Bear in Zion National Park is rare but not unheard of. Since bear sightings are so rare each one, even a possible siting, should be reported to park officials. It is important to know the procedure for bear encounters on the off chance that you may see one.
Even at 50 cfs, the water can be up to 5 feet deep in some places, so time your hike for days when the water level is below 50 cfs if you can. Also, check at the visitor center about the possibility of flash-flooding. If there's even a remote chance of flash-flooding, DO NOT HIKE THE NARROWS.