Korouoma Canyon in Summer: Hiking and Visitor Guide

Summer at a Glance


Main day trail	Koronjää, about 5 km loop, 2–4 hours
Summer-only day trail	Piippukallion pihaus, about 4–5 km loop
Difficulty	Demanding: a steep descent and climb on both loops
Frozen waterfalls	No; the side-streams flow
Main hiking months	June to September
Fall color	Usually mid-September into early October
Mosquitoes	Worst in warm, still weather in early and midsummer
Guided option	A snow-free-season hike from Rovaniemi with barbecue lunch

What Happens to the Frozen Waterfalls

The ice walls melt during spring, and by June the streams that feed them are running freely over the cliffs. The rock walls that hold the winter ice falls are the same, but without the ice they look so different that winter photos are hard to match to the summer view. If the ice falls are the reason you want to come, book a winter trip instead; our frozen waterfalls guide covers when they form.

What the Canyon Looks Like

Korouoma is a fracture valley in the bedrock, and summer shows much more of it than winter does. On the way down you pass spruce and pine forest, moss and boulder fields, and on the canyon floor you find the Korojoki River, flood meadows and the small waterfalls coming off the cliffs. Posio’s tourism office also points summer visitors to birdwatching, nature photography and fishing in the reserve.

In winter Korouoma is mostly an excursion from Rovaniemi. In summer it feels more like a quiet northern nature reserve, and you’ll share the trails with fewer tour groups.

The Koronjää Loop in Summer

The roughly 5 km Koronjää loop from the Saukkovaara parking area is still the first hike to do. Without snow and ice the walking is easier, but you still drop into the canyon and climb back out, and that climb is the hard part. After rain, wet roots, mud and smooth rock make it slippery. Allow 2–4 hours and walk it clockwise. Our Koronjää hike guide goes through the route stage by stage.

Piippukallion Pihaus, the Summer-Only Loop

The snow-free season opens a second loop from the same Saukkovaara parking area, Piippukallion pihaus. Metsähallitus closes it in winter because its steep slopes are dangerous on snow and ice. It is about 4 to 5 km long and harder than Koronjää: rated very demanding, with more height gain, rocks and roots, and 3–4 hours is a sensible allowance. It passes the canyon lean-to shelters and climbs to the Piippukallio shelter, with viewpoints over the canyon on the way. The official recommendation is to walk it counterclockwise; check the signs at the start, since leaflets have disagreed.

Do it as your second hike, or on its own if you already know Koronjää from a winter visit. Check the Luontoon trail page for its current status before you go.

The Long Korouoma Hiking Trail

For a multi-day trip, the Korouoma Hiking Trail follows the canyon and the Korojoki River between Saukkovaara and Lapiosalmi. Posio’s tourism office lists it at 20 km and two days, out and back. Metsähallitus’ Luontoon page gives a longer total of about 27 km. It is marked with orange paint and has lean-to shelters and wilderness huts along the way. You need basic fitness and navigation skills, plus a map, compass or GPS. The northern section is the most rugged.

In June 2025 Metsähallitus closed the section between the Koronjää junction and the Pajupuro wilderness hut until further notice, because the duckboards and bridges were no longer safe. While that closure stands, you start from Lapiosalmi and turn back at Pajupuro. We found no reopening notice when we checked in October 2026. Check Luontoon’s Korouoma news before you plan a long hike.

For a first visit, one of the day loops is enough.

Month by Month, June to September

June

You get very long daylight and fresh green leaves, and around midsummer the sky barely gets dark at night. Early June can still be cool, and snow or ice may linger in shaded corners of the canyon. Mosquitoes start to appear from mid-June.

July

July is usually the warmest and greenest month. It is also the peak of the insect season. Carry repellent and wear long sleeves.

August

August is a good month for general hiking. The days are still long and the forest still green, and insects usually ease off as the month goes on. Berries ripen along the trails.

September

Nights get dark again and the air turns crisp. Ruska, the Lapland fall color, usually starts in mid-September, and the birch and aspen turn yellow and orange against the dark rock. The exact timing changes from year to year, so check Visit Finland’s ruska updates before you fix dates. Our month-by-month guide covers October and the run-up to the freeze.

Mosquitoes and Other Insects

The forest, river and damp meadows make good mosquito habitat. They are worst on warm, still days, especially in late June and July. Use repellent, wear long pants and a light long-sleeved shirt, and pack a head net for bad days. A breeze or a cool spell keeps them down.

What to Pack for a Summer Hike

hiking shoes or boots with a good grip
hiking pants
a breathable shirt
a fleece or warm layer
a waterproof jacket
insect repellent and a head net
water and food

Northern Finland’s summer is not reliably warm or dry, and the canyon floor is cooler than the rim. Pack the fleece and rain jacket even on a sunny morning. Winter is a different list: see our winter clothing guide.

Driving Yourself or Joining a Tour

Summer is the easiest season to drive yourself. The roads are clear and the long evenings mean you won’t run out of light. Korouoma is about 110 km from Rovaniemi, roughly 1.5 hours each way. Our Rovaniemi route guide covers the drive and parking at Saukkovaara.

Without a car, the Korouoma Canyon Hike and Barbecue Experience is the guided option for the snow-free season. It costs from $153 and is rated 4.9/5 from 92 reviews on Viator. It runs about 7 hours with hotel pickup in Rovaniemi, a first-aid-trained guide, a group of no more than eight and a barbecue lunch cooked in the canyon. The hike covers 4–6 km, the operator recommends it for ages 8 and up, and you need moderate fitness. Our full write-up of that tour covers what’s included. The winter tours from Rovaniemi are not an option in summer, because they run only while the falls are frozen.

Summer Visits With Children

Summer is easier for active families than winter: no deep cold, no heavy clothing and no ice underfoot. The slopes are the same, though, and neither loop is suitable for a stroller, so small children will need a carrier. Our guide to visiting with kids has more on ages and tours.

Choosing Between Summer and Winter

Come in winter if you want the frozen waterfalls. Most first-time visitors who saw the ice photos want that. Come in summer if you want easier hiking, green forest, the river and long days, or if you want to walk Piippukallion pihaus, which is closed in winter. Keen hikers may find summer just as good.

Frequently Asked Questions

Is Korouoma Canyon open in summer?

Yes. The reserve’s trails are open all year, and the Piippukallion pihaus loop is open only in the snow-free season.

Are the frozen waterfalls still there in summer?

No. The ice melts in spring and the side-streams flow over the cliffs as normal waterfalls.

What is the best summer hike at Korouoma?

The 5 km Koronjää loop for most first-time visitors. Piippukallion pihaus is the harder second loop.

Are the mosquitoes bad at Korouoma?

They can be on warm, still days in late June and July. Bring repellent and long sleeves, and a head net for bad days.

What is the best summer month to visit Korouoma?

August for all-round hiking conditions; September for fall color.

Before You Go

Come in winter for the ice; come in summer for the canyon itself, its cliffs, river and quiet forest. Check the Luontoon trail notices before you leave, because sections close for repairs. Then compare the Korouoma Canyon tours if you’d rather have a guide and transport from Rovaniemi.

Sources and Practical References

Conditions, tour inclusions, prices and trail notices change. Check the official sources above before travelling.

Korouoma Canyon in Summer: Hiking Without the Frozen Waterfalls

Korouoma Canyon Hike and Barbecue Experience