The 2026 tourist season in Grand Besançon was heavily influenced by heatwaves, which shifted visitor behavior toward cooler options such as swimming spots, natural areas, and evening activities. According to the Office de tourisme et des congrès, overall attendance remained attractive despite a mixed trend. Ludovic Fagaut, a representative from the office, noted that the heatwaves affected certain sites and the central area of the region. However, the destination showed resilience, with more than 20,000 people advised by tourism teams. The mobile bike team, for instance, advised 2,190 people—a 38% increase—despite fewer visitors due to high temperatures. Foreign visitors made up 39.45% of the clientele, up from 27% in 2024, with Germans being the largest group, followed by the Dutch and Belgians. Most French visitors came from nearby regions such as Bourgogne-Franche-Comté, Auvergne-Rhône-Alpes, and Île-de-France. Campsites saw a significant boost in the summer, with the Besançon-Chalezeule campsite recording 27,122 overnight stays—an 78% increase compared to 2025. Operated by Onlycamp, this campsite mainly welcomed international visitors, especially Germans, Dutch, and Swiss. A nearby free pool, accessible to campsite residents, became an added attraction during heatwaves. The Osselle water base also saw a 12.6% increase in overnight stays, reaching 3,464, though the camping car area in Canot, Besançon, experienced more traffic outside the heatwave periods. Municipal swimming pools also saw increased attendance as people sought relief from the heat. Their overall attendance for 2022 was already surpassed ten days before the end of the summer season. The Mallarmé pool, which opened earlier than usual in June, contributed an additional 2,643 entries. Meanwhile, the Citadelle, the main tourist attraction in the area, welcomed 69,618 visitors in July and August, a slight 8% decrease compared to 2025. Nighttime visits dropped more sharply, with a 31% decline. Two canceled movie sessions due to thunderstorms affected event attendance, but the share of foreign visitors increased from 17% to 21%, up by 9%. The Office de tourisme recorded 17,989 visitors in July and August, a 11% decrease compared to 2025. High temperatures shifted attendance times, with peaks occurring outside the hottest hours. Patrice Hennequin noted that adjusted opening hours helped maintain a steady flow of between 200 and 300 visitors per day during the heatwave, compared to the usual 400 to 500. Guided tours showed better resilience, with 814 participants recorded, up from 762 in 2025. Evening events, such as the theatrical tour Besançon in the 16th century and the Dragon boat experience, were among the most popular. However, not all sites saw the same success, with some experiencing declines due to environmental and safety issues.