The season usually runs from April to September, but the river does not give you the same day in spring and in the middle of August. To choose, you have to weigh up warmth, water level, crowds and bivouac availability.
From April to September, six different moods
The indications below come from our experience at Vallon-Pont-d'Arc since 1998. They describe tendencies, not a weather promise. Water temperature and flow change with the rain, the heat of the preceding weeks and the river management decisions.
| Month | How it feels | Usual crowd level | Who for? |
|---|---|---|---|
| April | Cold water, chilly mornings | Very low | Well-equipped paddlers, lovers of quiet |
| May | Mild, river still cool | Low | Nature, photography, peaceful days |
| June | Generally pleasant warmth | Moderate, mostly at weekends | First trip, couples, sporty paddlers |
| July | Hot to very hot | High | Families, groups, swimming |
| August | Very hot, then milder late in the month | Very high before 20 August | Summer atmosphere, swimming |
| September | Mild, water still pleasant early on | Low | Couples, nature, bivouac at Gournier |
April: the river waking up
The canyon is green, the beaches are almost empty and the water stays cold. Mornings can catch you out, even when a fine afternoon is forecast. A capsize does not feel the same as in July: bring clothing suited to the day's conditions and a well-protected change.
April suits people who value quiet and are not counting on long swimming stops. For a bivouac in 2026, only the Gournier site is open, from 4 April.
May: plenty of nature, few people
The days get longer and the vegetation is still very much alive on the cliffs. Weekends can liven up, but the crowd levels bear no comparison with the summer school holidays.
It is a very good month for the 24 km through the Reserve or the 30 km, as long as you accept water that is still cool. Check the weather a few days before you leave: spring rain can change the flow quickly.
June: the easiest compromise
The warmth settles in without systematically reaching July levels. On weekdays the river often stays peaceful; weekends and group outings bring more activity.
For a first descent with no particular constraint, we happily recommend the second half of June. The days are long and all the routes generally run in good conditions.
If you are planning a night in the Gorges in 2026, Gournier is open every day. Gaud only takes visitors on Saturdays during June. That nuance matters before you book a weekend.
July: setting off early changes the day
The holidays begin, swimming becomes a real part of the programme and departures multiply. The heat is sometimes strong in the enclosed sections, where shade is scarce in the middle of the day.
On the 24, 30 and 36 km routes, an early start lets you paddle before the hottest hours and take on the first rapids with fewer people around. Take enough water; 1.5 litres per person is a minimum, to be increased on very hot days.
July remains a good period for families, particularly on the 6 or 12 km. The right reflex is not to avoid the month, but to pick a suitable time of day.
August: very busy, then calmer
The first half of the month concentrates the highest demand. Morning slots, groups and bivouacs fill up quickly. If your dates are fixed, book several weeks ahead.
After 20 August, the pace often starts to ease. The days stay hot and swimming pleasant, with more flexibility to choose your departure. It is an interesting period for those who want summer without the intensity of the start of the month.
In 2026, the Gaud site closes to the public on 29 August. Gournier stays open in September.
September: a different light on the Gorges
Once the school year restarts, the beaches empty and the cliffs take on a lower light. The start of the month often brings temperatures that are still mild, but mornings and evenings turn cooler.
September particularly suits couples, photographers and anyone who would rather hear the river than the conversations on the next beach. For the bivouac, Gournier stays open until 27 September 2026. Gaud is closed.
On a late date, do not transpose August timings: the days get shorter and departures on the long routes need to be brought forward.
The four criteria that really make the difference
Water temperature
It is at its coldest in early spring, rises steadily through June and generally reaches its most pleasant level in July and August. In September it often stays comfortable at the start of the month before dropping.
The precise figures you find online are averages. A week of rain or intense heat can make them useless. To plan your clothing, rely on the conditions forecast as your departure approaches.
Crowds
The peak sits between mid-July and the second half of August. Even during that period, the time of day matters enormously. An early start and a shifted lunch break give a very different impression from a late-morning launch.
Day length
It counts for little on a 6 km, but a great deal on a Full Run 36 km. In spring and in September, leave with a comfortable margin. Paddling time includes neither the picnic nor the swimming stops.
The bivouac
The Gaud and Gournier dates do not cover the whole canoe season. In 2026, Gournier is open from 4 April to 27 September. Gaud opens on Saturdays in June, then from 1 July to 29 August. Check the pitches before you book the canoe.
Read the bivouac booking guide
Which period should you choose for your profile?
With young children
July and the first half of August generally offer the most pleasant water for swimming stops. Choose the Mini Trip 6 km and set off early to avoid the afternoon heat. June also works very well if the children accept slightly cooler water.
For a sporty day
May and June are interesting for the 30 or 36 km routes: the heat is easier to bear while making an effort and departures are less crowded. In September, set off early to allow for the shorter days.
For a first bivouac
June, late August and early September offer fine conditions, without guaranteeing a mild night. In September 2026, only the Gournier site is open. Take a sleeping bag matched to the forecast night temperature.
To photograph the canyon
April, May and September give a lower light, softer contrast and fewer boats in the frame. Spring brings more green; September, drier tones and a more mineral atmosphere.
For a group of friends
July and August bring the holiday atmosphere, but demand more organisation. Book, set off early and choose the distance based on the least sporty person in the group. The 12 km is often easier to manage than a long crossing when levels are uneven.
What if it rains or a storm is forecast?
Light rain does not automatically mean a descent is cancelled. A storm, a flood or a rapid change in flow, on the other hand, call for a genuine safety decision.
Do not rely solely on the weather app you checked several days earlier. Call the base, follow the information from the authorities and respect the instructions given on the morning of departure. Navigation can be delayed or suspended when conditions require it.
Postponement and refund terms are those set out in the Viking Bateaux booking conditions. Avoid the general promises you find on a forum: each situation is handled according to the observed weather, the route and the decision taken for safety.
Frequently asked questions
1 Can you canoe in Ardèche in October?
Viking Bateaux normally runs the season from April to the end of September. Outside that period the base is closed and conditions are less suited to an unsupervised rental.
2 Do prices change with the month?
Viking Bateaux online prices are shown on the prices page. Check them when you book. What really changes through the season is the availability of departure slots and of the bivouacs.
3 Which month is the quietest?
April is usually the calmest, followed by May and September. In exchange you have to accept cooler water and less predictable weather than in high summer.
4 Can you swim in spring?
Yes, but the water can be cold. How well people cope with that temperature varies a lot from one person to another. Do not plan your kit as you would for a day in August.
5 When should you book for July or August?
If the date and the time matter to you, plan several weeks ahead. For a bivouac or a large group, start even earlier by checking the specific availabilities.
6 What would you recommend by default?
For a first descent, we would choose the second half of June or the first half of September. June gives you long days; September, fewer people. A family whose main plan is swimming will often prefer July or early August.
Period chosen? All that is left is the distance. Our guide to the seven routes compares the options from 6 to 36 km by level, duration and the sites you pass.