France will impose border controls for one month from November 30 for the UN Conference on Climate Change in Paris.
French Interior Minister Bernard Cazeneuve on Friday said it was a precaution "because of the terrorist threat or risk of public disorder", BBC reported.
However, Cazeneuve insisted that the decision to reimpose border controls was not linked to Europe's current migrant crisis.
"It is by no means a suspension of Schengen," he stressed, referring to the European Union (EU) free travel zone where passport checks are minimal or non-existent.
The Paris climate change talks will be held from November 30 to December 11 at Le Bourget, in the city's north-eastern suburbs.
The aim is to agree on new targets to reduce carbon emissions and prevent global warming, amid fears that increasing volumes of greenhouse gases could irreversibly harm the planet.
France had earlier reinstated border controls in 2011 for a G20 summit in Cannes, attended by many world leaders.
In December 2009, Denmark also imposed temporary border checks when it hosted the UN Climate Change Conference in Copenhagen.
