Reference
Trolltunga Weather: Month by Month, and the Best Time to Hike
Trolltunga’s weather is the weather of a high, exposed plateau above a wet fjord: mild by Nordic standards in summer, changeable all year, and snowbound for much of it. For the hike, the warmest and most settled stretch is July into August. At the Odda – Jordal station, the nearest station with published monthly normals on yr, July averages 15.0°C with 73.0 mm of precipitation in a normal year. June is about as dry (69.0 mm) but snow can still lie on the trail, while September is cooler at 10.9°C, much wetter at 177.0 mm, and shorter on daylight.
Those numbers describe the valley. Trolltunga itself sits at about 1,180 metres above sea level, and Trolltunga AS, the company that runs the trail, reminds hikers that it is always colder up in the mountains than down by the fjord. On the day, the forecast matters more than the month: Trolltunga AS says never to hike to Trolltunga if there is a strong wind, heavy rain or fog. Below you will find the numbers month by month, how snow and daylight shape the season, how to read the forecast, and a verdict for each part of the year.
The short answer
- Best months: July and August for warmth and long days; June and September as quieter shoulder months with more risk.
- Hiking without a guide: Trolltunga AS gives the summer season as 1 June to 30 September and recommends a guided hike for the rest of the year. Visit Hardangerfjord gives 1 June to 2 October and says a guide is required outside the season.
- Snow: the path is often covered with snow until May–June, and snow can settle again from mid-October.
- Rain: at Odda the normal monthly precipitation climbs from 55.0 mm in April to 200.0 mm in October.
- Daylight: from almost 19 hours in summer to less than 6 hours in winter.
- Stay down if: strong wind, heavy rain or fog is forecast.
Where the numbers come from
yr, the Norwegian weather service, does not publish normals for the rock itself, so this article uses the two stations it shows for the area.
- Odda – Jordal, 2.7 km from Odda. yr’s Odda page shows each month’s average next to the normal for that month, both for temperature and precipitation. Those normals are the best guide to a typical year.
- Tyssedal V, 10.2 km from Trolltunga. yr’s Trolltunga page uses this station. It shows what each recent month was actually like, but without normals.
Both stations are down in the valleys. The hike starts higher and climbs much further. Trolltunga AS lists P1 Tyssedal at 144 metres above sea level, P2 Skjeggedal at 415 metres and P3 Mågelitopp at 860 metres; the trail then reaches the mountain plateau at 900 metres or so, and the rock at about 1,180 metres. Treat the valley figures as the friendly end of the range: up on the plateau it will be colder and windier.
Trolltunga weather month by month
The table uses yr’s normals for Odda – Jordal. The right-hand column summarises the seasonal advice of Trolltunga AS.
| Month | Normal temperature | Normal precipitation | On the trail |
|---|---|---|---|
| January | 0.8°C | 158.0 mm | Deep winter; guided trips only |
| February | 0.3°C | 108.0 mm | The coldest normal month; guided only |
| March | 2.2°C | 125.0 mm | Snow on the plateau; guided only |
| April | 5.3°C | 55.0 mm | The driest normal month, but the trail is still under snow |
| May | 9.6°C | 68.0 mm | Spring by the fjord, snow higher up; a guide is recommended |
| June | 12.4°C | 69.0 mm | Summer season opens on 1 June; snow patches possible |
| July | 15.0°C | 73.0 mm | The warmest normal month, and the busiest |
| August | 14.0°C | 107.0 mm | Still warm, noticeably wetter |
| September | 10.9°C | 177.0 mm | Autumn colours, shorter days, much wetter |
| October | 6.6°C | 200.0 mm | The wettest normal month; snow can settle from mid-October |
| November | 3.3°C | 185.0 mm | Winter conditions; guided only |
| December | 1.0°C | 190.0 mm | Short, dark days; guided only |
Two patterns stand out. Late spring and early summer are the driest part of the year, with normals between 55.0 and 73.0 mm from April to July. From August the rain rises steeply, and September to December are the wettest months. That is why the end of the hiking season, however beautiful, is also the most likely to be washed out.
Why the mountain is colder than Odda
Trolltunga AS puts it plainly: it is always colder and more windy in the mountains than at the fjord. Three things are at work.
- Height. The plateau is several hundred metres above the valley stations, and air cools as it rises. A pleasant morning in Odda can mean a raw wind on the plateau.
- Exposure. Once the climb is behind you, the trail crosses open mountain ground, with little natural shelter from wind or rain.
- Speed of change. Trolltunga AS warns that the weather can change quickly, even on sunny days. A clear start is no guarantee of a clear afternoon.
Dress for the plateau, not the car park. Trolltunga AS recommends wool clothing all year round, because wool keeps insulating when it is wet, and says outerwear that is waterproof and windproof is a must. It adds a sobering line: every year there are rescues of tourists who were poorly equipped or not well enough prepared.
Snow: when the trail opens and closes
Snow sets the outer limits of the season more than temperature does.
- Spring. Trolltunga AS says the path is often covered with snow until May–June, even when it is spring by the fjord, and recommends a guided tour from October through May.
- Early summer. Even towards the end of June there may still be some snow in the mountains in certain years. Snow can lie well into June, and Trolltunga AS suggests sunglasses and high-SPF sunscreen as well as sturdy boots.
- Autumn. Snow can settle as early as mid-October, and snow showers may come earlier.
- Winter. Snow, ice, winter weather and short cold days turn the hike into a real expedition, and Trolltunga AS recommends only guided tours.
Every year is different. For 2026, Trolltunga AS reported unusually low snow levels after the winter and said the trail might become snow-free earlier than usual; in 2025, most of the snow had already melted by early May. For the current state of the trail, Trolltunga AS points hikers to its Trolltunga Trail Information page on Facebook.
The transport timetable reflects the same calendar. In 2026 the shuttle from Odda to P2 Skjeggedal ran from 15 May to 27 September, and the shuttle from P2 up to P3 Mågelitopp from 8 June to 27 September, weather permitting; the road closes in case of snow or ice. Check before you go, as dates are set each year. Our Trolltunga hike guide covers the season rules and the route in detail.
Rain, fog and wind: the conditions that cancel a hike
Trolltunga AS’s rule is short: never hike to Trolltunga if there is a strong wind, heavy rain or fog. Each condition causes a different problem.
- Fog hides the view you came for and makes the long route across the plateau harder to follow.
- Heavy rain makes the rock slippery. Trolltunga AS notes that in rain the wet rock can be slippery, and the descent is where tired hikers slip.
- Strong wind is unpleasant on the plateau and dangerous on the exposed edge where the famous photo is taken.
The Odda normals show when to expect the wettest weather: 177.0 mm in September, 200.0 mm in October, 185.0 mm in November and 190.0 mm in December. Single days can be heavy at any time of year: over the 13 months to September 2026, the wettest day at Tyssedal V brought 46.1 mm, on 13 March.
Bad weather also shapes the crowds. Trolltunga AS observes that it is usually most crowded on Saturdays and on the first sunny day after several days of rain, when everyone who waited heads up at once. If a wet spell clears midweek, expect company.
Daylight and when to start
Daylight at Trolltunga varies from almost 19 hours in summer to less than 6 hours in winter, according to Trolltunga AS. That range matters because the hike is long. From P2 Skjeggedal the round trip is 27 km and takes 8–12 hours; from P3 Mågelitopp it is 20 km and takes 7–10 hours.
In midsummer there is daylight to spare. By September the evenings close in, and Trolltunga AS’s advice on autumn is to start early and get back before dark. Whatever the month, it recommends carrying a headlamp, because the descent is when people are tired and slowest.
Light also matters for photographs. Trolltunga AS notes that the sun rises behind the mountain, so a picture of Trolltunga with the sunrise is not possible. Sunsets can be fine on a clear evening, and in autumn the sun goes down towards Folgefonna, which is part of the appeal of an overnight trip. Our guide to the via ferrata and guided tours covers the guided sunrise and sunset options.
What each part of the year is like
June
The season for hiking without a guide opens on 1 June, and June is one of the driest months in the Odda record (69.0 mm normal), with a normal temperature of 12.4°C in the valley. The catch is snow: in some years patches remain on the plateau until late in the month. Expect long days, fewer people than in July, and mixed ground underfoot.
July and August
July is the warmest month, with a normal of 15.0°C at Odda – Jordal and 73.0 mm of precipitation. August is almost as warm (14.0°C) but wetter (107.0 mm). These are also the busiest weeks: Trolltunga AS says the rock is busiest between 12:00 and 15:00 from about 20 June to 20 August, with a 30–45 minute wait for the photo on weekdays and often around 60 minutes on Saturdays.
September
September brings what Trolltunga AS calls a magical season: the mountains turn red, yellow and orange. It is also cooler (10.9°C normal) and much wetter (177.0 mm), and the days shorten quickly. The independent season ends on 30 September in Trolltunga AS’s calendar. Go early in the month if you can, start early in the day, and be ready to move your hike if the forecast turns.
October
October is the wettest normal month at Odda (200.0 mm) and the point at which snow can return, as early as mid-October. Trolltunga AS recommends a guided tour. Visit Hardangerfjord’s season runs to 2 October; after that, it says, you have to go with a guide.
November to February
Winter brings normals between 0.3°C and 3.3°C in the valley, much colder conditions on the plateau, and very short days. Trolltunga AS describes the winter hike as a real expedition and recommends only guided tours, with guides providing snowshoes and other equipment. The reward is a snow-covered landscape and, as Trolltunga AS puts it, Trolltunga almost to yourself.
March to May
Spring arrives by the fjord long before it reaches the plateau. April is the driest normal month at Odda (55.0 mm), but the path is often under snow until May–June, so guided snowshoe trips remain the way to go.
What the last thirteen months actually looked like
Normals are averages, and any single month can stray a long way from them. yr’s tables for the 13 months to September 2026 show how far.
| Month | Odda – Jordal average | Normal | Precipitation | Normal |
|---|---|---|---|---|
| December 2025 | 4.2°C | 1.0°C | 238.9 mm | 190.0 mm |
| January 2026 | -4.3°C | 0.8°C | no figure | 158.0 mm |
| July 2026 | 15.8°C | 15.0°C | 82.1 mm | 73.0 mm |
| September 2026 | 11.3°C | 10.9°C | 191.8 mm | 177.0 mm |
January 2026 was 5.1°C colder than normal, while December 2025 was mild and very wet. At Tyssedal V, the station yr uses for Trolltunga, temperatures over the same 13 months ranged from -12.5°C to 28.3°C. July 2026 there averaged 16.3°C with 79.9 mm, and September 2026 averaged 11.0°C with 171.6 mm. The lesson is simple: plan with the normals, decide with the forecast.
How to check the weather before you go
- Use yr. yr has location pages for Odda and for Trolltunga itself. Look at the hourly forecast for the day of your hike and the day after, so you have a fallback.
- Check the trail, not just the sky. Trolltunga AS posts trail conditions on its Trolltunga Trail Information page on Facebook, which is where snow cover and closures show up first.
- Follow the Mountain Code. The Norwegian Mountain Code from DNT, the Norwegian Trekking Association, asks hikers to always check weather and avalanche forecasts and understand what they mean for the route, to remember that the weather changes quickly in the mountains, and to turn around in time: there’s no shame in turning around. Its list of forecast services includes yr and, for avalanches in winter, varsom.no.
- Build in a spare day. If your trip allows it, plan the hike for the first day with a good forecast rather than a fixed date.
Best time to hike Trolltunga: a verdict
- For warmth and the longest days: July.
- For a quieter summer trail: early June, accepting that snow may linger, or the last days of August after the peak ends around 20 August.
- For colour: September, with an early start and a flexible date.
- For snow and solitude: a guided winter or spring trip.
- To avoid: any day with strong wind, heavy rain or fog in the forecast, whatever the month.
Guided trips run in every season, and our tours page lists current options.
Frequently asked questions
What is the weather like at Trolltunga?
Changeable, and colder than the valley. yr’s normals for Odda – Jordal range from 0.3°C in February to 15.0°C in July, and Trolltunga AS stresses that it is always colder and windier in the mountains than by the fjord. The weather can change quickly even on sunny days, so carry windproof and waterproof layers.
What is the best month to hike Trolltunga?
July has the warmest normal temperature and long days, with August close behind. June and September are quieter but riskier: June can still have snow on the trail, and September is much wetter, with 177.0 mm of normal precipitation at Odda.
Can you hike Trolltunga in May?
Usually only with a guide. Trolltunga AS says the path is often covered with snow until May–June and recommends guided tours from October through May; its summer season for hiking on your own starts on 1 June.
Is October too late for Trolltunga?
For an independent hike, yes in most years. Trolltunga AS’s summer season ends on 30 September, October is the wettest normal month at Odda, and snow can settle from mid-October. Guided autumn and winter trips are the alternative.
What should I do if the forecast shows fog?
Do not go. Trolltunga AS says never to hike to Trolltunga in strong wind, heavy rain or fog, and the Mountain Code reminds you there’s no shame in turning around. Move the hike to another day if your plans allow.