Your chances of an aurora on a Rovaniemi ice floating night
The evening ice float near Rovaniemi puts you on your back in a frozen lake, far from the town lights, looking straight up. Whether the northern lights show up depends on the sky and the sun, not on the tour. This page covers the odds, and the night you get when the clouds win.
What the aurora float is
Nordic Adventures runs the aurora ice floating tour from ~$138 on a frozen forest lake outside Rovaniemi. It lasts 3 hours with hotel pickup, and you float in a thermal rescue suit in a hole cut in the middle of the lake.
After dark the trip adds a campfire, and a heated cabin waits with glögi or hot berry juice. Cookies come with the drinks, and reviewers on Viator rate the night a shade higher than those on GetYourGuide.
The tour runs in all weather. That is good for your plans and less good for your sky, because a snowy night still goes ahead without any chance of lights.
What the sky needs
The aurora appears when charged particles from the sun hit the upper atmosphere. Finnish Lapland lies under the auroral oval, so on an active night the lights can show up almost anywhere in the region.
Three conditions have to line up at once. The sky must be dark, it must be clear of cloud, and the sun must be sending enough activity your way.
The tour can only control the first one, by driving you away from town. Nordic Adventures states on its listing that it cannot guarantee the lights, and no one else can either.
Town lights wash out a faint aurora. The Viator listing describes the lake as far enough from the city for dark skies. By one reviewer's watch, getting there takes about 45 minutes.
Floating also gives you the ideal viewing angle. You lie flat on your back and look straight up, with the forest edge low around you and nothing else in the way.
Between the float and the ride back there is time by the campfire and in the heated cabin. That gives the sky a little longer to clear while you warm up.
When the two seasons overlap
Aurora season in Lapland runs roughly from late August to early April, when the nights are dark enough. The lake float also needs solid ice, which shortens the window.
The overlap falls roughly between December and March. Earlier in the autumn the trip goes ahead too, on a lake that may still lack firm ice and snow cover. Our page on the best time to float goes through the whole winter.
Float in the dark, far from town
The night tour drives out beyond the city glow. A campfire and a warm cabin wait after the float, and reviewers enjoyed the evening whether or not the lights came.
What reviewers saw, and what they missed
The reviews tell both stories. Some guests floated under a green arc, and others saw the aurora appear just after they climbed out and walked back to the fire.
Many others got cloud or snow and no lights at all. A good share of them still rated the night highly, because floating in the dark silence was the part they came for.
Go with that mindset and a cloudy evening will not feel wasted. If the aurora is the one thing you must see, book a dedicated aurora outing as well, and treat the float as a bonus chance.
Checking the sky before you go
Two forecasts help on the day. An aurora forecast tells you how active the sun is, and a cloud forecast tells you whether you will see any of it from the ground.
Cloud cover matters most. A strong forecast under a thick grey lid shows nothing, while a modest one on a clear, frosty night can still put a pale green band over the trees.
Neither forecast is precise hours ahead, and the weather over a lake can differ from the sky above town. Treat them as a hint for which evening to book, not as a promise.
Since the tour runs in all weather, the operator will not cancel for clouds. If your dates are flexible and the free cancellation window is still open, moving to a clearer evening is your call.
A float without the lights
Picture the more likely evening first. You ride out in the dark, pull on the suit by a fire and slide into black water ringed by snow and ice.
The forest is silent and the stars may show between the clouds. Cold air bites your face while the rest of you stays dry and warm inside the suit. Afterwards you warm up in the cabin with hot berry juice before the drive home.
That alone is why most reviewers left happy. The aurora, when it comes, is a bonus on top of a night out that stands on its own.
Photos without your phone
You cannot carry a phone in the suit, and a phone struggles with the aurora anyway. The guides take photos and video of the group, which is how most people get their picture under the lights.
One reviewer waited days for the promised video, so check on the night how the files get delivered. Our guide to the float itself covers the rest of the session, from the suit to the cabin.
How to plan around clouds
Book the night float early in your stay. If the sky stays grey, you still have evenings left for another aurora trip or a walk to a dark spot out of town.
Keep the icebreaker day apart from it. Sail on the afternoon Sampo and you reach town only around 7:40 to 8:10 pm, too late for a lake trip that night, as our three-day plan for Rovaniemi explains.
Dress warmer than for the daytime float, since the night air is colder and part of the evening is spent outdoors by the fire. Our list of what to wear under the suit covers the layers.
If the dark matters less to you than the view of the frozen forest, our comparison of the day and night floats weighs the two tours on the same lake.