Fontainebleau forest partially reopens after mid-July wildfire burned 2,000 hectares

Reopening after six-week closure

On Saturday, 22 August 2026, French authorities reopened 80% of the Fontainebleau forest to visitors, six weeks after a mid-July wildfire burned 2,000 hectares across three days. The blaze required the deployment of Canadair water bombers to the Île-de-France region for the first time. The massif, spanning 20,000 to 22,000 hectares and welcoming 15 million hikers and climbers annually, had remained closed since the fire. On Friday, 21 August, forestry rangers from the National Forests Office (ONF) unblocked access points along approved pathways to prepare for the return of the public.

Security perimeters and underground fire monitoring

A restricted zone of 4,000 hectares remains closed to all public access. This excluded area combines the 2,000 hectares scorched by the flames and a 2,000-hectare safety buffer perimeter. Firefighters inspect the scorched soil daily with thermal cameras to identify residual hot spots above 65 degrees Celsius. The local ground composition, consisting of dry organic matter and sand, allows fires to circulate underground and reignite weeks after surface flames are extinguished. Benoît Kaplan, the delegate prefect for equal opportunities in Seine-et-Marne, explained the decision to open accessible sectors with dedicated supervision:

If we close too much, we will end up chasing the actors who want to enter the forest. We prefer to guide the public along marked routes with a strong presence of ONF teams in the forest, supported by the police and gendarmerie, rather than completely bunker down, which is not necessarily more effective.

Fontainebleau fire chief Olivier Conta confirmed that shifting weather permitted the reopening:

We have come out of the heatwave, and here we are finally returning to a climate in Île-de-France that is quite usual, meaning cool nights and days around 25 degrees at the moment. We are no longer in what is called a period of severe forest fire risk.

Local commerce and climbing sectors

The partial reopening restores access to 18,000 hectares of forest trails and prominent sandstone bouldering locations, including Franchard Isatis. Fontainebleau Mayor Julien Gondard noted that climbing activities generate just under 20 million euros in yearly economic activity for the surrounding area. Merchants and hospitality businesses in nearby villages, including Arbonne-la-Forêt, experienced substantial business losses during the six-week closure. Local authorities mandate that all visitors remain on marked trails, with strict prohibitions on campfires, smoking, and barbecues throughout the forest.

Ecosystem damage and long-term regeneration

Despite the return of walkers, foresters emphasize that flora and fauna remain vulnerable following summer heatwaves and prolonged water stress. Trees in adjacent zones continue to present falling risks due to weakened root systems and dry timber. Sophie David, environmental manager at the ONF in Seine-et-Marne, surveyed the scorched parcels:

All the needles are completely dry and have taken on this ochre colour. This is a very clear sign that the trees behind me are completely dead.

David noted that green shoots and ferns have begun emerging through the layer of ash, but full ecological recovery across the burned sectors will take several decades. The prefecture will maintain fire monitoring teams on site and evaluate further zone reopenings in stages.