Best National Parks to Visit in September (Road Trip Guide)

We love to visit national parks any time of the year, but September might just be the best month to go. The crowds start to thin, the summer heat finally breaks, and the parks that felt unbearable in July and August start to feel magical again (because you can actually enjoy them!). 

If you’re trying to figure out the best national parks to visit in September, we’ve got two road trips that hit nine parks between them, and honestly, either one is worth building your trip around.

Rocky Mountain National Park, CO

September Feels Like Peak Season — But Better Somehow

Most parks are still running at full capacity in September. Hotels, campgrounds, and activities are open, and you won’t run into the seasonal closures that start creeping in by October. 

What does shift is the crowds. The parks aren’t necessarily quieter, but there’s a noticeable change in how relaxed everyone feels. If you’re chasing that sweet spot between everything being open, and not having to spend all day in lines, September is the way to go!

It’s also the best month to escape the parks that get brutally hot in the summer. You can enjoy these parks without worrying about the heat cutting your day short.

Road Trip 1. — Utah National Parks in September

We’re Utah natives, and mid-September through early October is our favorite window to be in these five parks: Zion, Bryce Canyon, Capitol Reef, Canyonlands, and Arches. 

Plan for about 10 days to do all five comfortably, or stretch it to 14 if you can. You can fly into Salt Lake City or Las Vegas and loop through the entire state.

Zion National Park

Zion and Arches are the two parks in this loop that get the most uncomfortable in summer, with temperatures regularly hitting the triple digits. But by September, you’re looking at highs in the 80s, which makes hiking dramatically more enjoyable. 

Zion National Park, UT

Fall is also our favorite time to hike the Narrows. Water levels drop, making the hike easier, and it’s noticeably less crowded than summer.

Bryce Canyon National Park and Capitol Reef National Park

These two sit at higher elevations, which means they run cooler and are more prone to early-season weather changes than the rest of the loop. September lands right in the sweet spot — before the winter weather and road closures that tend to arrive by October or November.

Bryce Canyon National Park, UT

September gives you plenty of time to enjoy it without — you guessed it — unbearable heat.

Capitol Reef National Park, UT

Canyonlands National Park and Arches National Park

Canyonlands National Park, UT

Canyonlands and Arches National Parks, like Zion National Park, are some of the hottest stops on this route in peak summer. But cooler September temperatures make both parks far more comfortable for hiking and sightseeing.

Arches National Park, UT

INSIDER TIP:
The Narrows is one of our favorite fall hikes in the entire park system. By mid-September, water levels are low enough to make the hike noticeably easier than in spring or early summer, and the trail feels quiet compared to peak season crowds. It’s definitely worth a spot on your itinerary!

Plan Your Utah National Parks Road Trip

Location: Zion, Bryce Canyon, Capitol Reef, Canyonlands, and Arches National Parks, in Utah.

Open Season: All five parks are open year-round, but September through early October avoids both the summer heat in Zion and Arches and the early snow risk in Bryce Canyon and Capitol Reef. Check current conditions on the Zion National Park, Bryce Canyon National Park, Capitol Reef National Park, Canyonlands National Park, and Arches National Park alerts pages before you go.

Where to Stay: We have several recommendations in each of the parks — Zion, Bryce Canyon, Capitol Reef, Canyonlands, and Arches National Parks.

Ash’s Recommended Activities: Hiking the Narrows in Zion, exploring the hoodoos in Bryce Canyon, driving the Cathedral Valley Loop in Capitol Reef, hiking Canyonlands’ Mesa Arch, and walking out to Delicate Arch at sunset.

How to Avoid the Crowds: Aim for weekdays over weekends, and start early. Zion and Arches in particular fill parking lots fast even in the fall. If you want help mapping out timing across all five parks, our 10-day Utah national parks itinerary breaks down exactly when to hit each one. 

Want more help planning your Utah national parks road trip? We’ve got you covered!

Road Trip 2. — Colorado National Parks in September

Colorado’s four national parks — Black Canyon of the Gunnison, Mesa Verde, Great Sand Dunes, and Rocky Mountain — are wildly different from each other. September gives you a window to experience all of them with plenty of time before winter weather starts moving in.

Rocky Mountain National Park

Rocky Mountain National Park, CO

September is genuinely our favorite time to be in this park. Elk bugling season is in full swing, and the fall colors are a sight to see!

INSIDER TIP:
Early mornings and evenings are your best window to hear (and often see) the elk in action! Carve out some time in your schedule so you don’t miss it — it’s worth losing a bit of sleep over!

Black Canyon of the Gunnison National Park

This smaller, lesser-known park is seasonal, so getting there before winter weather arrives (usually October or later) is worth prioritizing. From here, the drive down the Million Dollar Highway toward Mesa Verde is one of the best drives in the state.

Black Canyon of the Gunnison National Park, CO

Mesa Verde National Park

Ranger-led tours are still running in September, so you can experience the cliff dwellings the way they’re meant to be seen.

Mesa Verde National Park, CO

Great Sand Dunes National Park

Skip the middle of summer here if you can. The sand gets scorching hot underfoot, which can make the dunes miserably hot. September’s cooler temperatures make this one dramatically more comfortable.

Great Sand Dunes National Park, CO

Plan Your Colorado National Parks Road Trip

Location: Black Canyon of the Gunnison, Mesa Verde, Great Sand Dunes, and Rocky Mountain National Parks, in Colorado.

Open Season: Black Canyon and Rocky Mountain are the most seasonal of the four, with cooler temperatures and possible early snow starting in September. Both are best visited before winter conditions set in around October. Check the Black Canyon of the Gunnison, Mesa Verde, Great Sand Dunes, and Rocky Mountain alerts pages for current road and weather conditions.

Where to Stay: We have several recommendations in Mesa Verde, Great Sand Dunes, and Rocky Mountain National Parks.

Ash’s Recommended Activities: Driving the South Rim of Black Canyon, taking a ranger-led cliff dwelling tour at Mesa Verde, sandboarding or sledding the dunes at Great Sand Dunes, and driving Trail Ridge Road while listening for elk in the Rocky Mountains. 

How to Avoid the Crowds: Early morning is your best window in the Rocky Mountains, both for elk activity and lighter crowds. If you want the full route mapped out hour by hour across all four parks, our Colorado national parks itinerary has you covered. 

Want more help planning your Colorado national parks road trip? We’ve got you covered!

Which September Road Trip Is Right for You?

Whether you head for Utah’s red rocks or Colorado’s mountains and dunes, both routes in September have cooler temperatures, full seasonal access, and a noticeably better crowd experience than peak summer. 

If you’re weighing the best national parks to visit in September and can’t decide between the two, maybe the answer is both…just maybe not in the same year!

Want to see every option for the month? Our free National Parks by the Month list breaks down the best parks to visit during every month of the year, including a lot more September options than we could fit here.

Your Next Read: Episode 117: Favorite National Park Road Trips!