Best Months to Camp in Colorado (And the Ones to Skip)

Phone rang this morning, feller from Dallas wanting to know when he ought to bring his family out to Colorado for a tent trip. I told him what I tell everybody — it depends what you're willing to put up with. Snow in June up high. Afternoon thunder that'll ground your fillings in July. Elk bugling you awake in September. Pick your poison.

Been working western campgrounds and backcountry desks going on four decades now, and if theres one state that'll humble a camper who shows up in the wrong month, it's Colorado. The elevation changes everything. A perfect week in Great Sand Dunes is a snowed-in week on Trail Ridge. So let's walk through it honest, month by month, and I'll tell you which ones are the best month for what, and which ones I'd skip unless you got a reason.

Sadie's at my feet while I write this. She's got opinions too but she can't type.

The Short Answer, Then the Long One

If somebody puts a gun to my head and makes me pick the single best month to camp in Colorado, I say mid-September. Second place, late June for the high country. Third, early October if you don't mind freezing your coffee at dawn.

Worst months? January and February unless you actually know what you're doing with winter camping. And honestly, early April is a mud festival in most of the state, I wouldn't send my own family out then.

But Colorado isn't one place. Camping along the Arkansas River near Salida in May is a different animal than trying to pitch a tent at Maroon Bells the same week. Elevation runs from about 3,300 feet out on the eastern plains to over 14,000 up top. That's the whole thing. Keep that in mind as we go.

May — The Mud and Melt Month

May's a trickster. Down low, in places like Colorado National Monument near Fruita, or Ridgway State Park off US 550, the weather's turning real pleasant. Days in the 70s, nights cool, wildflowers starting. That's good camping.

Go up though and you're still in winter. Rocky Mountain NP's higher campgrounds — Glacier Basin and Timber Creek near Grand Lake — can still have snow on the ground and in the sites. Trail Ridge Road usually dont open fully till Memorial Day weekend, sometimes later. Been years it was closed into June.

Shoulder-season gotcha I warn folks about: snowmelt swells the creeks something fierce. Fording a stream in late May is not the same as fording it in August. People drown doing dumb things in May water every single year. Just because the sun's warm don't mean that creek is.

If you camp in May, stay below 8,000 feet or know what you're doing with a cold-rated sleeping bag. Simple as that.

June — The High Country Wakes Up

Last two weeks of June is when the mountains really come alive. Wildflowers kicking off, trails drying out, mosquitos not quite in full attack mode yet. This is when I'd tell you to go to the San Juan Mountains around Silverton and Ouray, or up to Steamboat Lake State Park north of Steamboat Springs.

Campgrounds in the national forests start opening on their own schedule — the Forest Service site is the place to check actual opening dates, and I mean check it, because the dates shift every year with the snowpack. Don't trust what some blog said in 2019.

June downside: the afternoon thunderstorm pattern is already setting in by mid-month. Get your high ridges done by noon. I had a kid come into the Dillon office once in June of, oh, '03 maybe, bragging about summiting Grays Peak at 2 pm. I asked him if he'd ever been struck by lightning. He thought I was joking.

June's also when the mosquitoes near standing water — Twin Lakes, Turquoise Lake outside Leadville — can carry off a small child. Bring the DEET.

July and August — Busy, Buggy, Beautiful

These are the months everyone thinks of when they think about Colorado camping. They're not wrong. They're also not getting the quiet experience they might imagine.

Reservations at the popular spots — anywhere in Rocky Mountain National Park, Great Sand Dunes, Mesa Verde's Morefield Campground — go fast. Window for reservations is six months out on Recreation.gov for most federal sites, and the popular dates sell within minutes of release. State parks run through CPW and operate on a similar competitive clock.

What people don't account for in July:

• Afternoon thunderstorms damn near daily, usually between 1 and 4 pm
• Fire restrictions — stage 1 or stage 2 bans are common, meaning no campfires even in the ring
• Smoke drift from wildfires, especially in late July into August
• Heat down low — Dinosaur NM, the Dolores River country, Browns Canyon all broil
• Full campgrounds mean full vault toilets, and that aint pleasant by Sunday
• Monsoon moisture rolls up from the southwest, soaking the San Juans worst of all

Having said all that, if you can get a reservation at a place like Difficult Campground outside Aspen or any of the sites on the Peak-to-Peak Highway, you'll have a fine time. Just plan around the weather. Camp low or camp high but have your tent set up well before 2 pm.

And speaking of tents, make sure yours actually sheds water. July rain in the Rockies is no joke. I've seen a lot of $89 big-box specials fail on their first real storm. Spend the money on a tent that'll stand up to a Colorado July. Your sleeping bag will thank you.

September — The One I'd Send My Own Family To

Here it is. The month I'd pick if I could only camp one month a year in this state. First three weeks of September, you've got:

Aspens turning gold in the high country, usually peaking somewhere between the 18th and the 30th depending on elevation and the year. Elk bugling in the valleys of Rocky Mountain NP — you'll hear it from your tent at Moraine Park. Thunderstorm pattern breaking down. Days 60s and 70s, nights 30s and 40s. Mosquitoes mostly gone. Kids back in school so the crowds thin.

Places I'd point you: Ridgway State Park, the dispersed sites up Kebler Pass out of Crested Butte, Golden Gate Canyon State Park west of Denver, or Rifle Falls State Park if you want something quieter. The national parks are gorgeous but not as empty as they used to be — internet found em.

Hunting seasons start opening up end of September in various units, so if you're camping on national forest or BLM, wear some orange and know the trails you're hiking aren't in a live unit. Not usually a problem for established campgrounds but worth knowing.

Sadie prefers September. She told me.

October — The Last Honest Month

First two weeks of October can be glorious down in the canyon country — Colorado National Monument, Rattlesnake Arches, the Grand Junction area. High country starts closing campgrounds mid-month. By Halloween a lot of federal sites have shut off water and the gates are locked for the season.

October's the month you need a real sleeping bag. 20 degree rating minimum, 0 degree if you're going above 9,000 feet. First snow usually hits the high country sometime in the first half of October. Nothing wrong with camping in snow if you're ready for it. Lot wrong with it if you aren't.

A good liquid-fuel or canister stove matters more now too — those cheap butane cans get sluggish in the cold. If you're not sure what you need, start with the basics on the gear page and work from there.

November Through April — Skip, Mostly

I'll be straight with you. For most tent campers, this is skip territory. Not because Colorado isn't beautiful in winter — it absolutely is — but because the campground infrastructure is largely shut down, and winter camping is a different sport entirely.

That said, there's exceptions. Great Sand Dunes stays open year-round with the Piñon Flats loop that's accessible in winter, and camping there under a January full moon is something I'd recommend to a competent cold-weather camper. Chatfield and Cherry Creek state parks near Denver stay open and have winter sites with electricity if you've got a camper, which lets you cheat a little.

April is the month I steer people away from most actively. Mud season. Trails are closed or should be. Snowpack rotting but not gone. Campgrounds mostly still shuttered. River crossings dangerous. It's an in-between month and Colorado doesnt do in-between well. Wait for May.

March is the same story but with more snow. Only redeeming month in that stretch is maybe late February for seasoned winter campers wanting a quiet experience at the lower-elevation state parks. You can scope some options on the trails directory to pair up a winter day hike with a car camp.

A Few Regulations Worth Knowing Any Month

Food storage: most of the state is bear country from about April through November. Hard-sided vehicle or bear canister. Not a cooler with a bungee cord. I've written up more cooler incidents than I can count.

Fires: check restrictions the day you leave, not the week before. Stage 1 means no open fires outside developed rings. Stage 2 means no fires period, and often no stoves outside developed sites either. These change weekly in dry years.

Dispersed camping on national forest is 14 days max in one spot, then you move at least 3 miles. Don't be the guy who sets up a tarp city for the summer. Rangers know, and it's getting cracked down on hard.

Honest Take

If you've got flexibility, come the second or third week of September. If you can't, aim for the last ten days of June. Avoid April. Treat July and August as a logistics puzzle more than a vacation — reserve six months out, plan around afternoon storms, and accept you'll have neighbors. Winter camping's for folks who already know what they're doing. If you're asking when to camp for your first Colorado trip, September. That's the answer. Don't overthink it.