What is the Best Time of Year to Raft in Colorado?

Whitewater rafting in Colorado is an unforgettable adventure, with rugged mountain scenery, thrilling rapids, and plenty of options for every skill level. Whether you're looking for a wild ride or a relaxing float, timing your trip makes all the difference. Some of Colorado's most iconic rafting spots — like the Arkansas River, Clear Creek, the Poudre River, and the Colorado River in Grand County — each offer something unique depending on the season.

In this guide, we'll break down the best time of year to raft in Colorado and highlight some of the top destinations, including why Grand County deserves a spot on your list.

Best Time of Year for Rafting in Colorado

The typical Colorado rafting season runs from late May through early September, though it varies based on snowpack, weather, and elevation. Here’s what you can expect throughout the summer months:

Late May to June: High Water Thrills

Thanks to the snowmelt from Colorado’s mountains, rivers are at their fullest and fastest during this time. Expect powerful rapids and cold water temperatures. This is peak season for adventure seekers looking for Class III to Class V rapids, but it’s less ideal for families or beginners.

July: Peak Season for Everyone

By July, the rivers calm slightly, making them perfect for a wider range of rafters. Water levels are still high enough for excitement but safer and more manageable. July is the best month for families, beginners, and those wanting a balance of adventure and safety.

August to Early September: Scenic and Mellow

As summer progresses, water levels drop, and rafting becomes more relaxed. August is perfect for scenic floats, wildlife watching, and photography. It's also a fantastic time for younger kids or anyone who prefers a smoother ride without intense rapids.

Top Rafting Areas in Colorado

Arkansas River (Buena Vista and Salida)

The Arkansas River is the most famous rafting river in Colorado. It offers everything from heart-pounding Class IV-V rapids in Royal Gorge to beginner-friendly runs through Bighorn Sheep Canyon.

• Royal Gorge: High-intensity rafting with technical rapids.

• Bighorn Sheep Canyon: Ideal for families and first-timers.

Best rafting time: Late May through early August.

Clear Creek (Near Denver)

Located just west of Denver, Clear Creek is a convenient option for quick trips. Its steep gradient creates technical rapids that vary from beginner to expert levels.

• Upper Clear Creek: Fast, challenging water for experienced rafters.

• Lower Clear Creek: Milder rapids suited for first-time rafters.

Best rafting time: June and July.

Colorado River (Grand County and Glenwood Springs)

The Colorado River offers some of the most diverse rafting experiences in the state, starting right in Grand County.

• Grand County (Kremmling Area): Perfect for families and scenic floats with Class II to Class III rapids. Ideal for younger kids, multi-generational trips, and relaxing days on the water.

• Glenwood Canyon (Glenwood Springs): Offers a mix of splashy rapids and stunning canyon scenery.

Best rafting time: June through August in Grand County, May through August in Glenwood Springs.

Cache la Poudre River (Near Fort Collins)

The Poudre River is Colorado’s only federally designated Wild and Scenic River. It offers everything from beginner to advanced runs, with an emphasis on pristine, protected natural beauty.

• Lower Poudre: Gentle, fun Class II-III rapids.

• Upper Poudre: More intense Class III-IV whitewater action.

Best rafting time: Early June to late July.

Animas River (Durango)

Down south, the Animas River flows through the historic town of Durango. This river is split between mellow family-friendly sections and highly challenging upper stretches.

• Lower Animas: Great for beginner and family rafting trips.

• Upper Animas: Advanced rafting with serious whitewater — recommended for experienced adventurers.

Best rafting time: Late May through July.

Why Rafting in Grand County is Special

While many people focus on more famous rivers like the Arkansas or Clear Creek, Grand County offers one of Colorado’s most memorable rafting experiences for a few key reasons:

• Milder Rapids:
  The Colorado River in Grand County is ideal for beginner and intermediate rafters. With Class II-III rapids, you get the fun of rafting without overwhelming technical challenges.

• Longer Season:
  Because Grand County is home to the Colorado River headwaters, its rafting season often stretches from June through early September, depending on snowpack.

• Uncrowded Beauty:
  Compared to busier rafting spots, Grand County offers a more peaceful, natural experience. You can enjoy the river without feeling rushed or crowded.

• Scenic Landscapes:
  Raft past wide valleys, red rock canyons, lush forests, and spot wildlife like eagles, deer, and even the occasional moose.

Quick Tips for Planning Your Rafting Trip

• Book Early: Peak summer trips often sell out fast, especially in popular destinations like the Arkansas River.

• Dress for Success: Even in July, the water can be chilly. Wear quick-drying clothes and bring an extra layer.

• Know Your Comfort Level: Pick your river and timing based on your experience level and the kind of adventure you want.

Final Thoughts: When and Where to Raft in Colorado

If you're looking for big water and thrills, head to the Arkansas River in early June.
If you want a quick adventure close to Denver, Clear Creek shines in June and July.
If you're after a scenic, relaxed family trip with a longer season, rafting the Colorado River in Grand County is the perfect choice — especially from June through August.

No matter where you choose, rafting in Colorado is one of the most unforgettable ways to experience the Rockies.